Register Cleaning in San Rafael, CA

Register cleaning in San Rafael homes

Floor registers in 1950s-60s ranch tracts collect everything. They sit in the floor. Crumbs, pet hair, coins, and drywall dust fall straight in. Below the grille is the boot, a sheet metal elbow in the crawlspace. That boot is where the real buildup lives, not the grille you can see. In pre-1940 Marin houses converted from gravity heat, the old floor grilles are oversized cast iron and often painted shut.

Pull a grille and look down with a flashlight. Gray fuzz means ordinary dust. Dark streaking on the boot walls after an August smoke week means wildfire particulate settled in the run. Droppings or shredded insulation mean rodents got into the duct through a torn flex takeoff, which happens often in vented crawls around Ross Valley.

Cleaning a register is grille plus boot plus the first stretch of branch. We wash grilles off-site of the living area, brush and vacuum the boot, and check the collar where the boot meets the duct. Loose collars get resealed. Otherwise crawlspace air gets pulled into your bedroom.

Ceiling registers in flex-duct tract homes stain differently. Black feathering around the edge means air is leaking past the boot, not dirty ducts.

Same-day register cleaning available in San Rafael, CA.

Call (415) 223-3423

What happens after you call us

1
Call and tell us how many supply registers you have and where the furnace sits, crawlspace, attic or closet. We book a two hour arrival window and text you the tech's name before he leaves the shop.
2
He walks the house first, pulls a register cover, checks the return and the trunk line, then gives you one firm number. Vent count, flex versus sheet metal, and crawlspace access move that price.
3
We tape off the registers, run the vacuum under negative pressure, test airflow at every supply, and put the covers back clean. You pay the number you were quoted, nothing added after the fact.