Leaky Ducts: A Hidden Source of Heating Waste This October

October is a good time to look beyond your furnace and consider how heated air reaches your rooms. In a forced-air system, loose connections and gaps in ductwork can let conditioned air escape before it gets where you need it. Leaks outside the home’s conditioned space can be especially wasteful as Pittsburgh’s heating season ramps up.

The location of your ducts matters as much as their condition. For a homeowner in Carnegie, a useful starting point is identifying whether accessible ducts run through a conditioned basement, an unheated garage, or an attic. Heat escaping into an unconditioned area is not doing the same job as heat delivered through a room’s supply register.

You can check accessible ductwork for visibly separated joints, damaged insulation, or old tape peeling away from seams. A persistent whistle near a connection or noticeable airflow escaping at a joint while the blower runs may also warrant an inspection. Avoid opening equipment panels, climbing into unsafe spaces, or disturbing unfamiliar insulation.

Despite its name, ordinary cloth-backed duct tape is not a durable choice for sealing heating ducts. Professionals typically use duct mastic or approved foil tape suited to the application, and disconnected sections may need mechanical repairs before sealing. Insulation can help limit heat loss, but wrapping a leaking duct does not fix the underlying air leak.

For homeowners in Wexford planning an efficiency upgrade, a duct assessment can help determine whether sealing belongs on the priority list. A technician can look for supply and return leaks, evaluate airflow, and recommend testing when appropriate. Do not close numerous registers to force heat elsewhere; that can increase system pressure and create new performance problems.

MRT HVAC Contracting can help you understand whether duct leakage is affecting your heating system and which improvements make sense for your home. Our family-run company has served Greater Pittsburgh homeowners for over 30 years. Contact MRT HVAC to schedule an evaluation before colder weather puts greater demands on your heating system.