What the evidence says
If your energy bills in Austin are rising, it is reasonable to wonder whether dirty ductwork is to blame. The honest answer is that it depends on where the dirt is.
The EPA notes that some research suggests cleaning heating and cooling components, such as cooling coils, fans and heat exchangers, may improve system efficiency. It also states that little evidence exists that cleaning only the ducts will improve efficiency. That distinction is the starting point for any energy conversation.
Where energy is actually lost
1. Dirty filters
A clogged filter restricts airflow and makes the blower work harder. Check it regularly and replace or clean it according to the manufacturer’s instructions. Our air filter options include washable electrostatic filters.
2. Dirty coils and blower
Dust on the cooling coil and blower wheel reduces heat transfer and airflow. These components are part of HVAC maintenance and are where the EPA says cleaning may help efficiency.
3. Leaking ducts
ENERGY STAR estimates that in a typical house about 20 to 30 percent of the air moving through the duct system is lost to leaks, holes and poorly connected ducts. In Austin, many duct runs pass through hot attics, so leaks there can waste cooled air. Sealing and repair address this; cleaning does not.
4. A restricted dryer exhaust
Lint buildup makes the dryer run longer to finish a load. Cleaning the full exhaust route can restore airflow. See the signs that your dryer vent needs attention and our dryer vent cleaning service.
5. Attic insulation
Heat that moves through an under-insulated attic adds to the cooling load, and it affects ductwork that runs through the attic. Read why attic insulation matters in Austin homes.
When duct cleaning makes sense
Duct cleaning is worth considering when an inspection finds substantial debris, a pest problem or visible mold growth inside the system. Those are the situations the EPA identifies. If cleaning does take place, ask whether the coils and blower will be checked and cleaned as part of the same visit, because that is where efficiency gains are most likely.
Questions to ask before you book
- Which components are included: ducts only, or also the blower, coil and registers?
- Were any leaks, disconnected runs or damaged sections found?
- What filter does the system use, and is it the right fit?
For pricing factors, see our guide to air duct cleaning costs in Austin.
