Hot and cold rooms
The back bedroom stays warm in September while the hallway is fine. Leaky supply runs dump air into the attic before it reaches that room.
San Jose duct sealing
Stop cooling the attic. Cool the house.
We seal leaky heating and cooling ducts from the inside. One visit, a measured test before and after, and more of the air you already paid for reaching the rooms.
Serving Almaden, Cambrian, Willow Glen, Rose Garden, Berryessa, Evergreen, and central San Jose.
1 dayTest, seal, and written results in a single visit.
No drywallSeals hidden joints without opening ceilings.
MeasuredYou get the leakage number before and after.
LocalSan Jose houses only. We know the attic stock.
The service
Duct sealing for homes that never feel even.
Dust that comes back
Open returns pull attic air into the system. Sealing those leaks cuts the dust path without a full duct replacement.
A new AC that still struggles
New equipment on old ducts still loses air at the joints. Seal first so the system you bought can actually deliver.
How the visit works
We measure it, then we seal it.
Registers are covered, the system is pressurized, and leakage is recorded. Sealant is injected inside the ducts, where it builds up at the leaks. A second test shows what changed.
If a run is crushed, disconnected, or chewed through, we say so. Those sections need repair, not sealant.
See the processWhere we work
San Jose neighborhoods we schedule every week.
Almaden Valley
95120
Ranch and split-level homes with long attic runs and a back room that will not cool.
Cambrian
95124
Single-story ranches where back registers feel weak and dust returns after cleaning.
Willow Glen
95125
Remodeled homes with original ducts still hidden in the ceiling.
Rose Garden
95126
Older central homes with ducts buried in ceilings and additions.
Naglee Park
95126 · 95112
Period homes near downtown with later ductwork threaded through the attic.
Shasta-Hanchett
95126 · 95128
Bungalows and small ranches with retrofitted air and tight access.
Blossom Valley
95123
South San Jose tracts with attic flex and uneven back bedrooms.
Santa Teresa
95119 · 95123
Larger plans with long supply runs and hot attic air.
Evergreen
95135 · 95148
East-side homes with upstairs rooms that never match the thermostat.
Berryessa
95131 · 95132 · 95133
North San Jose ranches with attic ducts and uneven rooms.
West San Jose
95117 · 95128 · 95129
Postwar homes near the Campbell line with central air added later.
East San Jose
95116 · 95122 · 95127
Older east-side houses with central heat and air.
Get a quote for your house.
ZIP, year built, and the room that misbehaves. We confirm it is a ducted system before anyone drives out.
After the seal
Air that was leaking overhead stays in the living room.
Homeowners book us for comfort first. Lower runtime and less dust are what they notice after the registers actually move air.
See typical pricing