Air Duct Cleaning FAQ — Greensboro, NC

Cost depends on the size of your home, how many vents and returns you have, and how long it has been since the last cleaning. A small two-bedroom house costs less than a four-bedroom home with two HVAC systems. If there is mold or damage inside the ducts, that affects the price too. Call for a free estimate.

For most Greensboro homes, every three to five years is a reasonable interval. Greensboro sits in the Piedmont, where spring pollen counts run high for two to three months straight — that pollen gets pulled into the return vents every time the system runs. Homes with pets or anyone with asthma may need cleaning more often.

Look at your return vents — if you see a thick ring of gray dust around the grille, the ducts are overdue. Visible dust on surfaces shortly after cleaning, musty smells when the HVAC kicks on, or unexplained allergy flare-ups indoors are all signs. You can also pull a vent cover and shine a flashlight inside to see what is coating the duct walls.

We start by inspecting the system and showing you what we find. Then we connect the truck-mounted vacuum to your main return, seal off the supply vents, and create negative pressure through the whole system. We run a rotary brush through each duct line to break loose buildup before the vacuum pulls it out. Most homes take two to four hours depending on size.

Cleaning removes mold spores and debris from the duct surfaces, but it does not fix the moisture problem that caused the mold in the first place. Greensboro summers keep indoor humidity high, and flex duct in crawl spaces under older homes in places like Sunset Hills can stay damp for weeks. If mold keeps coming back, the root cause is moisture getting into the system.

It can, especially in homes that have not been cleaned in a long time. Greensboro's oak and pine pollen seasons run heavy from March through May, and a lot of that pollen ends up coating the inside of return ducts over the years. Removing that buildup means the system is not recirculating old allergens every time it runs. It is not a cure, but it removes one real source of indoor irritants.