2 Ways Your Air Ducts Are Negatively Affecting Your HVAC System


Over the past several years, your HVAC system's various components have worked together to keep your home comfortable throughout the year. However, recently, your HVAC system seems to be operating poorly and reducing the quality of your indoor air. Even though your air conditioner and furnace are functioning properly, there's still one more component of your HVAC system that may be giving you trouble—your air ducts. Inspect your air ducts for these problems and perform or arrange for the necessary repairs.

They're Not Sized Correctly

The size of your air ducts has a significant effect on the efficiency of your air conditioner and furnace. The blower motor that creates the airflow through your HVAC system must be powerful enough to ventilate hot or cool air through the entire length of your air duct system at a reasonable speed. If your air ducts aren't sized properly, then both your furnace and air conditioner will provide lesser amounts of hot and cool air, respectively.

If your ducts are too large, then your blower will easily be able to pull air into your ducts. However, the speed at which the air flows through your ducts and into your home will be extremely slow—which will require you to keep your system running for a longer period of time before you notice a temperature difference.

If your ducts are too small, then the air intake manifold of your HVAC system will serve as a choke point for your blower. Although your blower will be able to quickly send the reduced volume of air through your ducts, your air conditioner's evaporator coil and your furnace's heat exchanger won't receive the volume of air they require to operate efficiently. As a result, your furnace's heat exchanger and your air conditioner's evaporator coil will crack.

If you replaced your air conditioner or furnace without having your ducts resized, then you'll need to hire an HVAC repair technician to inspect the size of your ducts. There are several factors (such as the BTU ratings of your appliances, the CFM rating of your blower, and the square footage of your ductwork) that must be considered while resizing your air ducts.

Bacteria Growth and Allergens

Air isn't the only thing that passes through your air ducts. In addition to air that's heated or cooled by your furnace or air conditioner, airborne debris, allergens, and bacteria travel through your duct system. Although large debris such as pet fur and dirt are trapped by your HVAC filter, these additional contaminants will enter your duct system and reduce the quality of the air passing through your ducts and into your home.

Bacteria that enters your air ducts will thrive in the humid environment created by your air conditioner—especially if the water tray beneath your evaporator coil contains stagnant water. As bacteria begin to multiply deep inside your ducts, they'll create mold spores that ventilate through your home. As allergens slip through your filter and circulate into the various rooms of your home, several members of your household are likely to experience excessive sneezing, coughing, and sinus problems.

Dirty air ducts are a problem that every home with an HVAC system experiences at some point. Luckily, a simple duct cleaning is all that's required to get your indoor air quality back to normal.

If your HVAC system hasn't been operating efficiently, or if members of your household are beginning to experience health issues while your system is active, then don't hesitate to arrange for the necessary repairs. If you wait, These problems will continue to plague your HVAC system and reduce the comfort of your home.


11 May 2015

Exploring The Importance of Plumbing Pipes

Hi everyone, my name is Linda Strickerts. I am going to talk about plumbing pipes problems, repairs and upgrades on this site. Although the pipes hide beneath the floors and behind the walls, they are an integral part of the home. Without plumbing pipes, we would still be heading out to the outhouse to do our business. Washing clothes, dishes and ourselves would also not be possible without carrying buckets of water in and out of the home. I hope to explore the different ways plumbing pipes changed our lives for the better. I will talk about keeping the pipes in great shape as well. Thanks.