When duct cleaning is worth considering
EPA says you should consider having your ducts cleaned if:
- There's substantial visible mold inside hard (sheet metal) ducts or on other parts of the heating and cooling system. Ask the provider to show you. Wet or moldy duct insulation can't be cleaned well and should be replaced.
- The ducts have vermin, such as rodents or insects.
- The ducts are clogged with dust and debris, or particles are actually blowing out of the supply registers.
EPA adds that whatever caused the problem, like moisture or a gap that lets dirt in, has to be fixed first or it will come back. That's where an HVAC contractor earns their keep: finding the leak, the condensation or the disconnected duct in a hot Sacramento attic.
Red flags
- Sweeping health claims. EPA calls them unsubstantiated.
- Pitching duct cleaning as routine maintenance on every visit.
- Claiming to be "EPA-certified." EPA doesn't certify duct cleaners.
- Pushing chemical biocides or sealants before explaining the pros and cons.
- No written agreement with the total cost and scope before work starts.
Before you hire
- Get written estimates from more than one provider. EPA suggests talking to at least three.
- Ask them to show you the contamination that justifies the cleaning.
- Ask whether they follow the NADCA air duct cleaning standards. For fiberglass duct board or lined ducts, ask about the insulation manufacturers' (NAIMA) recommendations.
- Check the contractor's license with the Contractors State License Board (CSLB).
We don't publish prices. Ask for a written scope that lists which parts of the system will be cleaned.
Ducts and your AC
EPA notes some research suggests cleaning system parts like cooling coils, fans and heat exchangers may improve efficiency, but there's little evidence that cleaning only the ducts does. If your system struggles to keep up in summer, a tune-up or AC repair visit may be the better first call. Leaky or undersized ducts also matter when you replace a system. EPA also recommends having fuel-burning furnaces inspected before each heating season. See furnace repair.
Get connected
Call (916) 378-7166 or use the short form on this page. A participating licensed HVAC contractor serving your area will follow up.
FAQ
How often should air ducts be cleaned?
There's no fixed schedule. EPA does not recommend cleaning air ducts routinely, only as needed, for example when there's substantial visible mold, vermin, or enough dust and debris that particles blow out of the supply registers.
Will duct cleaning help my allergies?
EPA says duct cleaning has never been shown to actually prevent health problems, and it warns against hiring companies that make sweeping health claims. If allergies are the concern, talk with your doctor and ask an HVAC contractor about filtration as well.
Is a company that says it's EPA-certified a good sign?
No. EPA says it does not set duct cleaning standards or certify, endorse or approve duct cleaning companies, so be wary of that claim.
What should a duct cleaning visit include?
According to EPA, the provider should open access ports so the whole system can be cleaned and inspected, check for asbestos-containing materials first, use HEPA vacuums or equipment that exhausts outside, protect your home, and clean the system's components, not just the ducts.
Does SacramentoACRepairs.com clean ducts?
No. We're an independent referral service. We connect Sacramento-area homeowners with participating licensed local HVAC contractors, who inspect, quote and do the work.