How Much Does Aeroseal Cost in the Bay Area? MaxSeal’s 2026 Price List
You want to know what duct sealing will cost before anyone comes out. At MaxSeal, Aeroseal duct sealing costs $3,000–$3,500 per HVAC system. Home size isn’t really a factor, and homes with more than one system get a multi-system discount. Duct leakage and airflow tests start at $295, and an in-home or video consultation is free. If your ducts are too dirty to seal, cleaning ($500–$800) comes first. Your written quote is based on your system’s test results.
Key Takeaways
| Common Question | Short Answer |
|---|---|
| How much does Aeroseal cost? | At MaxSeal, Aeroseal duct sealing costs $3,000–$3,500 per HVAC system in 2026, with discounts for homes with multiple systems. Home size isn’t really a factor. What to expect on seal day |
| How much does a duct leakage test cost? | MaxSeal’s duct leakage and air volume test starts at $295. It measures total leakage in CFM25 and airflow at every register. Duct leakage test |
| How much does duct cleaning cost? | MaxSeal’s duct cleaning ranges from $500 to $800. It’s needed before sealing when ducts are too dirty for the sealant to bond. Duct sealing vs. duct cleaning |
| How much does duct repair cost? | Manual duct repair starts at $450. Duct re-insulation starts at $750. Duct repair |
| Is the consultation free? | Yes. In-home and video consultations are free. Contact us |
| Why does Aeroseal cost more than sealing ducts by hand? | Aeroseal reaches ducts inside walls, floors and ceilings that hand sealing can’t, and it includes measured before and after results. Aeroseal vs. manual sealing vs. replacement |
| Is Aeroseal worth the price? | On energy alone, payback is roughly 5–9 years if your ducts waste $450–$720 a year, and comfort is often the bigger reason people seal. How much energy leaky ducts waste |
1. MaxSeal price list (2026)
| Service | Price | What it includes |
|---|---|---|
| Consultation (in-home or video) | Free | We review your comfort problems, bills and system, and recommend next steps |
| Duct leakage & air volume test | From $295 | Total duct leakage in CFM25 plus flow-hood airflow readings at every register, with a written report |
| Manual J load calculation & full duct system diagnostic | From $495 | Room-by-room heating and cooling load, static pressures and a full duct system assessment |
| Aeroseal duct sealing | $3,000–$3,500 per system | Pre-test, sealing from the inside, live monitoring, post-test and a before/after report. Multi-system discounts available |
| Duct cleaning | $500–$800 | Required first when ducts are too dirty to seal |
| Manual duct repair | From $450 | Hand repair of disconnected, crushed or torn sections, including gaps too large for Aeroseal |
| Duct re-insulation | From $750 | Re-insulating ducts in attics, crawl spaces and garages |
Prices are typical ranges. Your written quote is based on your system’s test results.
2. Why Aeroseal is priced per system, not by square footage
The work is set by the duct system, not the size of the house. Each HVAC system has its own ducts, and each one is set up, pressurized, sealed and tested as a separate job. A 1,800 sq ft home and a 2,600 sq ft home with one system each usually take about the same effort. A home with two systems (often upstairs and downstairs) is two sealing jobs, which is why we discount the second.
3. What a typical project costs
| Scenario | Likely services | Typical total |
|---|---|---|
| One system, ducts in good shape, leaky | Test + Aeroseal | $3,295–$3,795 |
| One system, a disconnected run in the attic | Test + manual repair + Aeroseal | From $3,745 |
| One system, dusty ducts that must be cleaned first | Test + cleaning + Aeroseal | $3,795–$4,595 |
| Two systems (upstairs + downstairs) | Test + Aeroseal × 2, multi-system discount | Ask for a quote |
| Uneven rooms, cause unknown | Free consultation, then test or full diagnostic | $295–$495 to start |
Totals add the starting prices above and are estimates, not quotes.
4. What you get for the price
Across 38 Bay Area systems MaxSeal sealed, duct leakage dropped by an average of 86%, and airflow at the vents rose by an average of 47%. Every system improved. See the full results study.
| Benchmark | MaxSeal result |
|---|---|
| Average leakage before → after | 400 → 54 CFM25 |
| Average extra air delivered to rooms | +225 CFM per system |
| Typical target after sealing | Under 50 CFM25 |
5. How MaxSeal compares to national price guides
National guides list whole-house Aeroseal anywhere from about $800 to $3,800. Those averages mix regions, smaller jobs and different scopes. Our price includes testing before and after, a written leakage target and a report with room-by-room airflow, so you can see what you paid for.
6. Is it worth it?
On energy alone, sealing typically pays back over several years. If your ducts waste $450–$720 a year in heating and cooling and sealing recovers most of that, payback is roughly 5–9 years. Comfort is often the bigger reason people seal: rooms that never got enough air start getting it. See how much energy leaky ducts waste.
7. Can I lower the cost?
- Multiple systems: Ask about the multi-system discount.
- BayREN EASE Home: Income-qualified Bay Area homes can get up to 80% of weatherization costs covered, including duct sealing, through a BayREN partner contractor. See tax credits and rebates in 2026.
- Financing: GoGreen Home offers low-interest financing for energy upgrades in California.
Conclusion
MaxSeal’s 2026 prices are published so you know the range before we visit. Aeroseal is $3,000–$3,500 per system, testing starts at $295, and the consultation is free.
Your final quote comes from your test results. The price includes testing before and after, a written leakage target and a report with room-by-room airflow.
Get a Free Consultation or call (408) 400-3630.
Related: What to expect on seal day · Our results · Reviews · Aeroseal near me