Duct Sealing, Design & Balancing · Las Vegas valley
Your ducts run through a 140° attic. We fix what that does.
Any home with rooms that never match the thermostat, summer power bills that outrun the neighbors', dust that comes back a day after cleaning, or flex duct from the builder that's been cooking in the attic since the Clinton administration.
from $1,150
measured seal jobs; testing from $249
Typical leakage found
25–40%
Post-seal target
<8%
Verification
duct blaster, 2×
Payback
2–4 summers
Las Vegas production homes were mostly built with builder-grade flex duct, panned returns, and mastic applied on a Friday afternoon. After fifteen or twenty summers at 130–150° attic temperatures, tape dries out, connections sag, and inner liners collapse. The result is a system that cools the attic instead of the kids' rooms — and a homeowner who gets quoted a bigger AC when the real problem is the delivery network.
We start with measurement, not opinion: a duct blaster test quantifies total leakage in CFM, a static pressure profile finds the chokepoints, and room-by-room airflow readings show exactly which registers are starved. Then we fix what the numbers say — mastic-sealed connections, replaced runs where liners have failed, added returns where doors whistle, dampers set and locked for balance.
When we're done, we test again. Your paperwork shows leakage before and after in CFM, and airflow per room against target. That's the difference between 'we sealed your ducts' and proof. Typical results in valley homes: 25–40% leakage cut to under 8%, and back bedrooms that finally hold the setpoint.
Duct Sealing, Design & Balancing — common questions
How do I know if my ducts are the problem and not the AC?
Classic duct signatures: one or two rooms always 3–6° off the rest of the house, a system that runs constantly on hot afternoons without ever satisfying, dust rings around registers, and an attic where you can feel cold air moving near duct joints. The $249 test package settles it with numbers either way — and it's credited toward any sealing work.
Is duct sealing really worth it, money-wise?
In this climate it's usually the best dollars-per-comfort work on the menu. If you're leaking 30% of your air into the attic, roughly 30% of your summer cooling spend buys you nothing. Sealing typically pays itself back over two to four summers on NV Energy savings alone — before counting the comfort fix.
Do you use the spray-in sealant or do it by hand?
By hand with mastic for everything accessible — it's more durable and lets us inspect every joint while we're in there. We're happy to discuss aerosolized sealing for inaccessible runs, but we quote it honestly: it's a complement to hand-sealing, not a substitute for fixing crushed or fallen duct.
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Dispatch is open
112° doesn't wait. Neither do we.
Same-day service across the Las Vegas valley. Diagnosed with instruments, quoted flat-rate, verified with numbers on your invoice.
or call (702) 555-0164 · 24/7