Certain HVAC and plumbing links are built into most homes. While we tend to think of these as distinct, separate systems, cooling and heating may interact with plumbing at several points inside your house. Defects can cause problems in either system, including indoor water damage and potential damage to connected HVAC units. Here are some points where HVAC and plumbing links converge inside your home — and what could go wrong.
AC Overflow
Humidity reduction is a vital part of air conditioning. As the indoor evaporator coil condenses water vapor, it is collected in a condensate drip pan beneath the indoor air handler. This liquid flows through a line that's connected to the household drain system. Problems that occur with HVAC and plumbing links include algae growth in the condensate drip pan clogging the drain line. If this happens, the drip pan will overflow every time the AC cycles on.
Annual preventive maintenance of HVAC and plumbing links by a qualified professional contractor includes an inspection and cleaning of the drip pan and drain line. Biocide tablets may be added to the drip pan to inhibit algae growth and prevent future clogs.
A High-Efficiency Furnace
Furnaces with high AFUE efficiency ratings condense water vapor present in exhaust gases. This condensate flows through typical HVAC and plumbing links, including a drain line that extends to the outdoors or into the home's drain system. A clog anywhere can cause condensate to back up into the furnace, triggering an automatic safety switch that shuts down the furnace. Professional HVAC service is required to clear the clog and then restart the furnace.
Home Dehumidifiers
A whole-home dehumidifier that's installed inside home ductwork may produce more than 10 gallons of condensate daily. A blockage anywhere in the common HVAC and plumbing links may cause leakage or overflow and resulting water damage where the dehumidifier is located — usually in the attic. Most manufacturers recommend annual dehumidifier preventative maintenance by a qualified professional to avoid clogs and overflow.
For more about potential problems with HVAC and plumbing links — as well as effective solutions — talk to the professionals at Air Assurance.