Archive for the ‘Going Green’ Category

Do you have room to expand?

Tuesday, November 29th, 2011

by Dan Jape of Reliable Heating & Air

A few weeks ago I received a letter from Cherokee County water department informing me they were installing a back flow preventer on our home and letting us know of a need to have a thermal expansion tank installed in our plumbing system to prevent possible damage to our home. All cities and counties  have installed or are installing back flow preventers to stop the possible contamination of the water supply in homes.  A back flow preventer is a one way valve installed at the connection of your homes water supply and it makes the home a closed system that has no room for expansion which occurs when water is heated. A thermal expansion tank is required to stop the possibility of an over pressure situation that can damage to the water heater and the temperature and pressure relief valve in your home. The letter from the county gave us 30 days to have a expansion tank installed before the backflow valve is installed in our subdivision.

 

Cherokee County is currently putting  the backflow valves in all homes and one should check with the water department to see when they are scheduled to do your home if you are a resident of Cherokee. Cobb and Fulton counties have already installed these valves in past years and if you live in these areas, you should already have a thermal expansion tank in your home. If you do not, you should have one installed immediately, as the lack of one can cause damage to the water heater or a collapse of the flue of a water heater, which can be very serious. They are round cylinders installed above of adjacent to the water heater and they contain a bladder filled with air pressure that allows the excessive pressure a place to expand to.

 

Until recently, I thought the thermal expansion tank was an item that would last for years with no maintenance required from the homeowner, and once you had one, you were set. But I found out I was wrong. I was called to a home last week to give a customer a price on a new heating system and I was surprised to find the first floor of their home had been severely flooded when their thermal expansion burst and leaked water on their furnace and then filled up their basement while they were away on vacation. He found out the hard way that thermal expansion tanks should be changed every 5 or 6 years according to the manufacturers. They are very easy to change once you have one and can be purchased at any home improvement store or hardware store as well as from your plumber. In most homes in Atlanta, a floor drain was not installed in the basement during construction, making a water leak from a water heater or thermal expansion tank a major problem. These two items should be checked on a routine basis for leaks and when over 10 years old, replaced to make sure you do not have a flood you may not detect until major damage is caused. Neither item carries a big ticket price to replace considering the peace of mind it can bring.

 

Check with your water department today to see if you have a backflow preventer already installed and if not, when they will install. If you already have a thermal expansion tank, check the date on it to make sure it is not too old and a potential for harm to your home.

 

It’s not just “routine” maintenance this time of year.

Monday, October 3rd, 2011

by Dan Jape of Reliable Heating, Air & Plumbing

Cold weather is right around the corner and you will soon be in need of heat in your home. Furnaces need a complete service and cleaning each year before they are turned on to make sure they are safe and efficient. Many times, a homeowner will make the assumption that just because a furnace ignites, it is safe to operate. This could not be farther from the truth. Modern day furnaces are a very safe appliance and when maintained, can give years of service. But it is important that the series of safety devices and components that make them safe are in good working order. All modern day furnaces are safe if they are maintained properly, but if neglected could cause a problem. Reliable Heating, Air & Plumbing employees 100 plus Nate certified techs to make sure all is in good shape for a long cold winter.

One of the most important items to check and clean is the heat exchanger.  A furnace burns gas and heats up a metal box that contains the gas burners and when the box is warm, a fan blows air across the outside of the box and transfer heat to the air stream, which is then distributed to all the rooms of a home. This heat exchanger heats and cools thousands of times a year and this causes expansion and contraction. This can cause metal fatigue and cracks in this burner box which allows carbon monoxide to leak into the air stream. We have long optical scopes that can be inserted into a heat exchanger to check for cracks and fatigue to make sure they are airtight. This is extremely important to be checked every year, as this piece is a very stressed component of the furnace and can fail at any time a furnace is over 10 to 12 years old. It is also very important that any rust and debris that accumulates in the heat exchanger is vacuumed out to allow all the heat generated by the combustion of the gas to be properly transferred to the air stream.

Another very important series of devices that need to be checked are high temperature limit switches which monitor a furnace for an overheated condition. These high limits are crucial in making a furnace safe and they need to be checked and tested each year to make sure they operate correctly. If a fan or blower stops operating on a furnace, the gas will continue to ignite until these limit devices sense the furnace is overheated and shut off the burners and turn the furnace off. These limit switches are directly in the air stream and take a lot of abuse and they fail after a number of years.

 

Furnaces have a device that moves air and fumes through the heat exchanger and it is often a component that needs service in a modern furnace. This “draft inducer” is in the combustion stream of the furnace and is exposed to the hot, acid laden fumes of the by-products of gas combustion. Some manufactures make the housing of these inducers out of plastic and they become so hot, the plastic housing cracks allowing flue gases to be emitted into the living space of a home. Some early models also used metal housings and fan blades that was not built out of corrosive resistant materials and they rusted out quickly. These units need to checked at the start of every season for proper operation and integrity of the housing. A complete and through inspection on all the controls on a furnace have to checked every year to assure one all is working properly on their gas furnace.

 

A gas furnace that a builder installs in your home can give you 14 to 18 years of service if they are taken care of properly and  serviced regularly. A furnace that a consumer purchases can last 20+ years and provide safe efficient heat if properly maintained. Have your local heating and air contractor check for correct operation and your family should be warm and safe this winter. If you are need of a new furnace, they start out as low as $1495 and can go up to $3500 for a top of the line model.

When it’s time, it’s time!

Friday, June 17th, 2011

by Dan Jape of Reliable Heating & Air

When it’s finally time to replace your old heating and cooling system, there will be many choices and different decisions to be made that will affect your comfort, efficiency and overall happiness with any new system selected. It would benefit anyone to become familiar with the different components and terms you will face when that day does arrive.

There are 3 separate pieces of equipment you have to replace when purchasing a new HVAC system and they are the furnace, the indoor cooling coil, and the outdoor condenser or air conditioner. You have choices of different furnaces and condensers, but generally there is only one coil for any system.

 

There are many different manufacturers of furnaces and many different models available, but there are really just  two distinctly different types of furnaces, single speed, single stage furnaces and two stage, variable speed furnaces. A single speed single stage furnace comes on full blast anytime it runs and the motor in it consumes $250 a year of A/C electricity. A two stage variable speed furnaces comes on gradually and only uses the amount of gas needed at any given time to heat your home and it’s blower consumes only $30 annually of D/C current. The Variable Speed furnace also comes with a special thermostat that actually allows the furnace to reduce the amount of humidity in your home by an additional 5 to 10%, and when it is drier  in your home, you can actually keep it warmer and feel the same comfort level, which will save you money.

 

You have many choices in different outdoor condensers and what you pick is critical in your comfort. There are two different types of outdoor units, single speed units and two speed units. The two speed units are the best choice for most homes in the south, as they can be large enough in capacity to handle the extreme hot days,  but because of their two speed design, they slow down to remove more moisture than a regular single speed condenser. The efficiency of these two speed units is usually so much better than a single speed unit that they can reduce the electric consumption by over 50% compared to your old cooling system you have in place now.

There are “builder grade units”, consumer grade units and top of the line units in both single speed and two speed. Builder grade units are units designed for a low, upfront price point and come with short warranties and will usually provide a shorter life span, as most builders are only interested in how a particular appliance operates for one year, which is the standard warranty a new home comes with.

 

Consumer grade units today come with a 10 year parts warranty and some companies offer a 10 year labor warranty or even a lifetime warranty if properly maintained.  Units such as these can last 18 to 20 years often times and are available up to 16 seer in most cases.

 

Top of the line air conditioners are loaded with safeties and controls that allow them to last 20+ years and cut operating costs up to 60% while doing the best job in dehumidification and cooling and come in single speed, two speed single compressors, two speed twin compressors and even solar powered. Units such as these are more expensive up front, but are a better investment in the long run, by offering superior operation, efficiency and comfort.

It helps in any market place to know about the different products that are available and it is always a good idea to get at least 3 different estimates to see if there is a general consensus to what each company recommends.

Reliable Heating & Air Summer 2011

Monday, May 16th, 2011

Dan Jape, Reliable Heating & Air

Now that warm weather has arrived, it is very important that your cooling system is checked to make sure it is operating at peak efficiency. If your system is low on refrigerant or coils are dirty, it can cost you hundreds of dollars more each year to cool your home. Make sure you do not waste your money operating a cooling system that is not operating at peak efficiency.

Most HVAC companies offer a service contract which provides two visits a year to clean and tune up your heating and cooling systems and the summer inspection should include cleaning the outdoor unit of mud and debris lodged in the outdoor coil. This cleaning helps a unit give the best efficiency possible. It is always best to sign a service agreement with your company, as it gives your priority treatment during peak times and a discount on parts. At Reliable, we offer a lifetime warranty on most parts if a service agreement is put into effect at time of repair. If that same problem or part ever fails again, we fix it for free, no questions asked.

There are some big changes in the HVAC business brought about by the passage of the new Georgia State Energy Code, which goes in effect this year. It calls for some new tough policies regarding the heating and cooling systems that are installed in new homes.

Blower door tests are now required on all new homes to check the infiltration rate of a new home. The result must be less than 7 air changes per hour at 50 Pascals .  Companies such as Reliable Heating & Air are required to have a DET certified specialist on staff to check the tightness of the duct systems and the thermal envelope of the structure. Duct leakage now has to be tested and certified to meet the new standard for tightness. Duct mastic has to be used to seal ducts to make sure they are tight and not leaking conditioned air.

Programmable thermostats are required with every system as are attic tents or covers over the attic staircases. Attic vent fans can no longer be installed in a new home unless they are solar powered.  Electric furnaces cannot be installed in any new homes after January 1, 2011. A heat pump must be installed as the primary heat source if natural gas or propane is not used.

There are many other facets of this new energy code, but these are some of the highlights that might affect your HVAC system in the future.

For over 33 years, Reliable Heating & Air has been known as the company to trust for all your heating and cooling needs, providing top quality service at affordable prices. Many times, our customers have looked to us for referrals to handle their plumbing needs also since they have always felt a high level of trust and satisfaction from conducting business with Reliable. We have searched for many years for the right plumber who gave the same great service experience we like to provide our customers and have never been able to give a recommendation without worrying about the outcome.  We are now proud to announce we have opened up a plumbing division offering the same great pricing and helpful cheerful service our customers have always had counted on for their heating and cooling needs and we guarantee 100% customer satisfaction. Call us today for any plumbing or heating and cooling needs.

Dan Jape, Owner – Reliable Heating & Air

 

Spring Cleanup List Begins with HVAC

Monday, April 18th, 2011

Courtesy of HGTV.com

To keep your house in top shape, give systems an annual checkup.

Spring cleaning is a tradition, but there are some other chores that should be part of your springtime routine, too. Most of them take only a few minutes, so get started!

1. Check your air-conditioning and heating equipment before the beginning of a new season.

2. Check and replace your furnace and air-conditioning filters every month. There are several types from which to choose, depending on your needs. Fiberglass filters last only one month, while the filters typically last three to four months. HEPA filters last up to six months and can be cleaned with a vacuum nozzle.

3. Most air conditioners have a drainage hole on the base of the cabinet, beneath the evaporator fins. This hole needs to be kept clear in order for the air conditioner to work properly. It’s a good idea each spring to use a paper clip or wire to poke through the hole and clear it.

4. To keep a dehumidifier working properly, remove its housing and let the unit dry completely. Vacuum every accessible surface and crevice.

5. Clean your bathroom fans once a year. Take the cover off, wash it in soapy water and clean dirt off the fan blades with a toothbrush. Be sure the power is off when you do this!

6. Check the flappers on your toilets at least once a year. If they are showing their age, replace them before they start leaking and wasting water.

7. Remove all faucet handles and clean their insides to keep the screws from corroding. Use a rust remover if necessary.

8. Replace the batteries in smoke and carbon-monoxide detectors twice a year: when the time changes to daylight savings time and then back to standard time. While you’re at it, dust or vacuum the detectors to keep them working at peak performance.

9. Make sure you have a fully charged fire extinguisher that you can reach quickly and easily.

10. Inspect and, if necessary, caulk around your home’s windows and doors annually. That will help keep out heat and humidity in the summer and cold drafts in the winter—and save money on your utility bills all year round.

11. Open and close all windows. Do they all open easily, yet close tightly? If not, check the weather stripping. There are a number of different types to consider.

12. The best time to caulk a joint outdoors is during the spring or fall. That’s when the width of the joint is halfway between its seasonal extremes. A plastic drinking straw or a length of plastic tubing makes a handy extension tube for caulking hard-to-reach places. Secure the extender with duct tape.

13. To really clear and clean screens for springtime, rub them with kerosene on both sides, then rinse with soap and water. Kerosene fumes are dangerous, so make sure to do this outside or in a well-ventilated area.

14. To fix a small hole in a window or door screen, dab clear household cement over the hole with a toothpick. If the screens are plastic, test the cement on a scrap to make sure it won’t melt the material.

15. Use the same technique to repair screen tears. Pull the two halves of the tear together and hold them in place with masking tape on one side. Apply the household cement to the tear, then smooth with a putty knife. When it’s dry, gently remove the tape and apply cement to the other side.

16. Clean out the gutters of winter debris and check them for damage from ice. Install gutter screens or protectors to help keep debris out of the gutters.

17. If a roof gutter is sagging, pitch it back to a level position by tightening its strap with pliers. The tighter the strap is twisted, the more the gutter will rise.

18. Be sure the gutters slope properly toward the down-spouts.

19. To prevent basement flooding, make sure there is at least three feet between the side of the house and the down-spout’s outlet. Use one of the following methods to reach that distance:

  • Add an elbow for pipe and extension, although that often leaves the outlet still too close to the house.
  • Use a splash guard that stretches about three feet.
  • Attach a flexible extension hose to the end of the down-spout and bend it in away from the house.

20. To prevent foundation erosion as well as basement flooding, build up soil around the house and slope it away from the foundation.

-For more home improvement tips and money-saving ideas, visit HGTV.com

-Dan Jape

Home Automation Made Affordable and Easy

Wednesday, November 10th, 2010

by Dan Jape of Reliable Heating & Air

There is an exciting new Trane product we have available that will allow you to put control of your home in the palm of your hand and provide total comfort and total security from any remote location. The “LiNK” system allows you to monitor and remotely control the temperatures and energy efficiency of your home as well as controlling the door locks, security lights and even turn on cameras that show you what is happening in your home. Many different systems in your home can be controlled from your web enabled phone or laptop computer. Two hundred and thirty-one different systems can be connected to the LiNK system and all you need is an internet connection.

Controlling and monitoring you homes heating and cooling system has many uses. I never know when I will get home on any given day, so a programmable thermostat is useless for my lifestyle. LiNK allow me to adjust my temperatures when I am on my way home so my comfort level is already where I like it before I get there. LiNK will send me an alert if my home gets too hot or too cold, possibly alerting me to a problem with my system.

One of the most exciting aspects of the LiNK system you will enjoy the most is the ability to have wireless camera’s pointed at your front door and throughout your home that will show you real time pictures of who just entered your home and what is actually taking place even though you might be out of town. The LiNk system can be programmed to allow select people in your home at certain times and not others and keep a 90 day record of when and who came in and out. This could be very useful for cleaning services, exterminators etc. It would also be very handy to know when your teenagers come home and who was with them. I will occasionally get a call from my security company that I had an alarm go off and I do not know if it was a false alarm or a real emergency. So far, thank goodness, all have been false alarms, but the drive home to check it out is a very tense trip I would rather not have to make. LiNK would allow you to verify to the police that you have had a real break in and need them to actually respond.

You can remotely turn off and on lighting and open and close your garage door in addition to many other uses. You can even program your system to work in concert when you arrive from work, push a button and the garage door will open, your entryways will light up, your security system will recognize you, and your front door will unlock. LiNK can have your favorite music playing for you when you get home and while you were away, LiNK can make sure the lawn sprinkler watered your lawn on schedule. If it had rained, you could have bypassed the sprinkler system from work.

The great thing about this system is it is modular and you can slowly but surely add new devices as you find you need them and as long as they are Z-Wave compatible devices, the sky is the limit. And the best part is the system is very affordable!

Call us today (770-594-9969) to learn more about this exciting new way of controlling your home.

Dump your pump and get a $1000 bump!

Tuesday, August 24th, 2010

by Dan Jape of Reliable Heating & Air

There is an exciting new program from the gas company that will allow you to get a $1000 rebate and when combined with federal tax credits of $1500, earns a total of $2500 off the cost of a new heating and cooling system. This is almost half the cost of the entire system and when combined with the $1000 rebate now available from Trane, makes this the most lucrative time of the year to replace your old worn out furnace and air conditioner. This new program is called “Dump the Pump” .

The new program from the AGL, the local gas provider, gives you the chance to replace your old heat pump or dual fuel system with a new high efficiency gas furnace and air conditioner and get $1000 no strings attached. Many of these old heat pump dual fuel systems were installed in past years as a result of kickbacks paid to heating and air contractors or builders by the local electrical companies. Many of these systems were not installed or applied correctly and they have not given good service or comfort. The local gas company for most of metro Atlanta is AGL and they serve everyone except the city of Sugar Hill and city of Austell. If you have a marketer, such a Scana or Walton Gas you purchase your gas through AGL and can earn the rebate. This rebate is available only through a select few approved contractors chosen by AGL to perform these dual fuel replacements. While a heat pump can be a good choice for a basement, many times they do not work as well as a gas furnace as the primary heating system in existing older homes or homes without extensive insulation in the walls and attics. This $1000 rebate is a great opportunity to get rid of an old heat pump that never should have been installed in the first place.

Trane now has some very lucrative rebates and finance offers available through the end of November 2010 that will help reduce the cost of a replacement system even more. There are instant rebates of $200, $400 and even $1000 on 16, 17 and 20 seer systems. Or if you prefer, Trane will give you three year interest free financing to pay for a new comfort system as you enjoy the energy savings and comfort afforded you by modern day Energy Star systems. The 3 year program requires no down payment, so one can immediately start enjoying the comfort and savings aspect of this program without any initial outlay of resources. Many people have contacted us this past summer about high energy bills and air conditioners that cannot keep up with the extreme heat wave we have seen this year. This past winter, we also saw colder temperatures than I can remember and the cold snap went on and on for months. These new tax credit qualifying systems also save hundreds of dollars in gas cost and can improve the comfort level of any home.

Dump your Pump today and enjoy up to $3500 in true rebate and incentives that will help you long term to enjoy your most valued belonging, your home. Enjoy lower utility cost, improved comfort, and lower humidity levels today!

Goodbye, my old friend..

Monday, February 15th, 2010

by Dan Jape of Reliable Heating & Air

After a ten year phase out, Freon is now dead and gone forever and this change will have an impact on most every home and business in the country. Back in the early 1990′s, law was enacted that called for the phase out of CFC’s, halons, and HCFC,s due to the fact they destroy the ozone layer and are responsible for creating an ozone hole over the South Pole. Freon is an HCFC and whether you believe in the ozone issue or not, everyone who currently has an old air conditioner that runs on Freon will be affected by the phase out since the law mandated that no new Freon based a/c units can be built after January 1, 2010 and after January 1, 2015, there is a ban on the sale and use of Freon in residential use. As the production of new Freon is limited, the price of this gas is going up to the point to where if you have an old leaky a/c system that uses Freon R-22, it will be a better idea to replace your a/c system instead of spending hundreds of dollars fixing leaks and recharging the system with Freon. Freon is going to be expensive this summer and to keep adding more to a leaky system is not a good use of your money. The state of the economy has the price of new systems lower than ever before and warranties have been escalated to 10 years parts and labor making this the best of times to cut ties with your Freon based a/c system.

New units now use R410a refrigerant which is far better than Freon in removing heat and moisture and is the only refrigerant available for home use. New units can cut your electric bill by 50 percent while giving you comfort you have never known. There are tax credits available of $1500 from the federal government which will pay the cost of upgrading to the very best furnace and a/c system. You will get a variable speed furnace with a built in dehumidifier and a 16 seer a/c system that will keep your home cool and dry in the summer and an even temperature in the winter. There are also factory rebates of $1000 or 36 months same as cash to help with the cost of upgrading your comfort system.

Every year people who know they have to replace their cooling systems get estimates over the winter when business is slow and they get the best prices of the year. But instead of going ahead and getting the work done early before the warm weather arrives, they procrastinate until it get hot and contractors are already busy, then they call and try to get off season deals. The heating and cooling business is all about supply and demand. In the warm months, there is an abundance of jobs and customers waiting to have work performed and no contractor can give you a special deal because the time to do your work could be sold at full price to the next person waiting in line. Do not wait until spring to try and repair or replace your a/c if you already know you need service. Get it done early if you want the best price and experience no waiting in a hot house.

Flooding and your Comfort Systems

Monday, October 12th, 2009

by Dan Jape of Reliable Heating & Air

The floods that struck Atlanta brought many tragic results included the destruction of life and home for many and my heart goes out to all those affected. Sometimes one is at a loss to understand why such occurrences happen and how they become so terrible out of something so necessary such as rain. The floodwater also can have long reaching affects on our lives and safety unless properly cleaned up and treated.

Many basements and crawl spaces were flooded with water that was laden with bacteria and byproducts of sewer due to the overflowing of the drain water systems and septic tanks. This water made its way into walls, carpets, floors, and most importantly, furnaces and water heaters. The modern day furnace is lined with insulation panels that absorbed all this very dangerous and polluted water and it cannot be removed the fibrous material. These panels have to be replaced as do all the controls devices, limits, fan motors and gas valves. The furnaces have to be removed and completely taken apart and scrubbed and disinfected and by the time all the damaged parts are replaced, one would come out much better by replacing the entire furnace. The cooling coils are also insulated with fiberglass panels that soaked up this dirty infected water and should also be replaced to ensure safe indoor air quality.

Water heaters that have been under water are extremely dangerous, as they often will relight after drying out, and people assume sine they fire up and heat water, they are safe. This could not be farther from the truth, as the water and sediment that seeped in gas valves, burners and safeties can cause trouble in the days that follow the flood. One should never attempt to light a flooded water heater without a complete replacement of the controls and burners or replacement of the entire heater. These appliances are far too cheap and the consequences of a malfunction are too severe to chance using a damaged and flooded heater.

Outdoor air conditioner condensers are designed to sit outside in the rain and they faired much better in the floods than furnaces. If an outdoor unit flooded and the controls did not get immersed under water, there is a good chance the unit can be cleaned out and put back in service. If the control box and the electronics got wet, they will need to be replaced. The coils should be acid washed and thoroughly cleaned before the unit is operated.

The two mail concerns with flooded systems are safety from gas valves and controls that were damaged and dangerous indoor air quality from fecal matter and sewer water that was mixed in with the rain water. The last area of concern was ductwork and insulation that got soaked in the flood. All duct work that got saturated needs to be replaced regardless whether it’s metal or flexible. The insulation on ductwork will never dry out to properly insulate the ductwork after it has been under water, and the ducting itself can’t be properly cleaned to make sure it is clean and disinfected to not spread airborne pollutants.

The floods hurt many people and cost untold millions in damage to homes and property. Make sure you properly repair and replace your homes heating and cooling systems along with your water heating appliances to make sure you are safe and secure and all systems work as designed.

New Important Tax Credit Information

Friday, August 7th, 2009

by Dan Jape of Reliable Heating & Air

There has been some exciting news in the world of tax credits and heating and air. When the American Recovery and Reinvestment Act of 2009 was passed into law, it included a provision allowing a tax credit for a furnace that has a high efficiency blower motor regardless of the thermal efficiency of the gas burner section. Up until recently, the IRS was not recognizing this section of the law and was giving credit only for furnaces that were 95% efficient or greater and this limited many people’s choices, as this model was not always the best choice for everyone. They had not included this important “main air circulating fan” portion of the law failing to realize that in some parts of the country, the largest energy savings can be derived from electric savings from these special fans in 80% efficient furnaces. Now due to a recent ruling by the IRS, two more types of furnaces are now eligible to earn tax credits for the years 2009 & 2010. These are 80% efficient variable speed furnaces with two stage gas valves and 80% efficient single stage furnaces with super high efficient blowers. Both of this types of furnaces can now earn a credit by themselves and not just as a piece of a qualify system. This a great ruling coming just before the winter season when many people will be looking to replace their furnace and cannot afford to install a 95% model or can’t install one due to the type of home they own. Both of these furnaces will save hundreds of dollars a year for people and will provide much lower gas bills over an old 50% to 60% furnace.

On another note:
As we move closer to the beginning of the cooler weather, I want to alert homeowners to a safety problem that has become of epidemic proportions in the last year. Many thousands of homes have had to have their roofs replaced due to hailstorms that hit the metro area in the last couple of years and as we have been going in peoples attics to work on their heating and cooling systems we have noticed some alarming and dangerous problems that need to be brought to peoples attention before heating season arrives and they start using their furnaces. Roofing companies are inadvertently causing problems when replacing roofs by dislodging furnace flues completely and by pushing flues up against the wood decking of homes they are roofing. Most roofers do not come into the inside of the attic to check the furnace flues or chimneys when replacing roofs. We have found numerous flues knocked completely off and many more touching wood decking, which is very dangerous and a code violation. Double wall furnace flues must have 1” clearance from wood and the roofers are accidentally sliding the pipe into the wood and attaching the roof flashing in the wrong place. You can check for this problem by going into the attic with a flashlight and look for the round silver pipe coming from the either the attic furnace or up through the roof of the second floor and make sure it is not touching the decking or has been knocked completely off the furnace. If you have had your roof replaced recently and you are unsure if there is a problem, call your heating and air company to perform an inspection of your furnace flue, as there could be a situation that needs attention before heating season arrives.