Professional Duct Sealing Services in Ontario, CA

Yes — we see this regularly. We inspect, photo-document the current state of every register and the trunk lines, then re-clean using HEPA negative-air. You get a before/after photo set and an itemized line per scope element. We routinely find handfuls of dirt a prior crew left in the runs.

Three differences customers cite: we use HEPA negative-air and seal off the registers we're not working so debris can't recirculate; we clean the full system (registers, returns, blower, coil inspection, condensate drain), not just the registers; and we document with before/after photos and an itemized scope. If you've been burned before, ask for the documentation up front.

Bring the other invoice or describe what they did. We re-inspect, identify what was missed (commonly the returns, the blower, or the coil), and quote the re-clean honestly. Many of our re-clean calls come straight after a competitor's visit.

Yes. Pre-close inspection-response is time-pressured and we treat it that way — same-day or next-day scheduling, a written report on completion, and photo documentation so the buyer's agent can sign off. It's a regular workflow across Ontario.

Ask whether they use HEPA negative-air and seal the non-active registers; whether they clean the returns, blower, and coil or only the registers; whether the quoted price changes on-site; and whether you get before/after photos and an itemized scope. Those four answers separate a real clean from a quick upsell.

Yes — cigarette and cigar nicotine residue is one of our most common post-purchase asks. Standard reset: a full duct cleaning plus indoor coil clean, sanitize, and a new HVAC filter, documented with photos so you can show the system was reset.