Professional duct sealing in Livermore costs $1,600 to $11,250 and takes 4-8 hours, reducing energy bills by 20-30% for CA LIC #1002667 certified technicians. Call (925) 420-0014 for inspection.
Our Promise Keeping Achievements
















Our Promise
Our Duct sealing S.C.O.R.E Promise in Livermore
Every Promise Keeper follows the same five standards on every job.

Satisfaction Guaranteed
We stand behind the quality of our work and make it right when needed.
Clean & Tidy
We respect your home and leave the work area clean and organized.
On-Time
We value your time and work hard to arrive when promised.
Responsive
Calls, texts, and emails are returned quickly and professionally.
Estimate Stays the Same
Your agreed price stays as promised unless you approve a change.
We call our team members Promise Keepers.
If we do not keep all 5 promises, the job is FREE.
How It Works
How Our Duct sealing Process Works in Livermore
From your first call to final inspection β hereβs what to expect when you work with a Promise Keeper.

Schedule a Promise Keeper
Book online or call us. We confirm your appointment window and send your dedicated Promise Keeper.
Complete Home Assessment
Your Promise Keeper arrives on time, inspects the issue, and walks you through exactly what they find.
Options Presented Upfront
No surprises. You get clear, honest options with upfront pricing before any work begins.
Repair or Install Done Right
Our licensed pros get it done β clean, efficient, and backed by our 5-promise guarantee.
Ensure Quality with Inspection
Every job is QA checked. We cross every T, verify every detail, and follow up to make sure youβre satisfied.
Ready to experience the S.C.O.R.E difference?
Schedule Your Promise KeeperService
Why Livermore Properties Need Duct sealing
Livermore's extreme Tri-Valley climate with summer temperatures reaching 105Β°F makes duct sealing essential for energy efficiency and comfort. Our licensed technicians specialize in sealing the aging ductwork found in Livermore's 1960s-70s tract homes throughout Springtown and newer developments.
Livermore's hot, dry climate and older housing stock create unique ductwork challenges. Many homes in Springtown and Sunset East have original 1960s-70s ductwork with deteriorated seals, while South Livermore wine country estates often have extensive duct runs that lose conditioned air. PG&E customers see immediate savings on their utility bills after professional sealing.
Our technicians are known as βPromise Keepers,β and we believe in helping homeowners S.C.O.R.E with Five or Free. Our S.C.O.R.E system ensures every job meets high standards: Satisfaction Guaranteed, Clean & Tidy Work, On-Time Service, Responsive Communication, and Exact Pricing.
What Is Duct Sealing?
Duct sealing is a professional service that identifies and permanently closes air leaks in your home's heating and cooling system. Using advanced Aeroseal technology, our certified technicians seal gaps, cracks, and holes in your ductwork from the inside out, creating an airtight pathway for conditioned air to reach every room in your home. This process involves injecting polymer particles into your duct system that automatically find and seal leaks up to 5/8 inch in diameter.
Unlike traditional methods that require accessing crawl spaces or cutting into walls, modern duct sealing works through your existing vents and registers. The process uses computer monitoring to measure exactly how much leakage exists before and after treatment, providing you with documented proof of improvement. Most Livermore homeowners are surprised to learn that typical homes lose 20-40% of their heated and cooled air through duct leaks, making this one of the most cost-effective energy improvements available.
The sealed ductwork not only improves energy efficiency but also enhances indoor air quality by preventing dust, allergens, and outdoor pollutants from entering your air distribution system. This is particularly important in Livermore, where seasonal wildfire smoke and agricultural dust can significantly impact indoor air quality when ductwork isn't properly sealed.
Why Livermore Homes Need Duct Sealing
Livermore's unique climate and housing characteristics make duct sealing especially beneficial for local homeowners. The city's Mediterranean climate brings intense summer heat regularly exceeding 100Β°F, placing enormous strain on air conditioning systems. When ductwork leaks, your AC works overtime trying to cool air that's escaping into attics, crawl spaces, and wall cavities instead of reaching your living spaces. This inefficiency directly translates to higher PG&E bills during the peak summer months when electricity rates are at their highest.
Step by Step
Our Duct sealing Process in Livermore
- 1
Comprehensive Duct Inspection
Pressurize ductwork and locate leaks using specialized equipment in Livermore's 1960s-70s tract homes
- 2
Aeroseal Application
Inject polymer sealant that finds and seals leaks from inside the ductwork system
- 3
Performance Testing
Verify 90%+ reduction in air leakage with before/after measurements
- 4
City Permit Completion
File required documentation with City of Livermore Building Division if needed
Benefits
Benefits of Duct sealing in Livermore
- β20-30% reduction in PG&E bills during Livermore's brutal summer months
- βImproved comfort in multi-level homes common in South Livermore estates
- βReduced dust infiltration from Tri-Valley agricultural areas
- βExtended HVAC system life in challenging 100-105Β°F summer conditions
Related Services
Other Air duct cleaning service in Livermore
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See the Proof
Duct sealing Reviews in Livermore
See what homeowners in Livermore are saying and browse our recent jobs.
Got Questions?
Duct sealing FAQs in Livermore
Still have questions? Weβre happy to help.
Contact UsWhy Choose Us
Why Livermore Homeowners Trust Our Duct sealing
At Five or Free Electrical Heating and Air Solutions, we donβt just complete jobs β we keep promises. Every technician is a Promise Keeper, and every job follows our S.C.O.R.E system.

Satisfaction
Guaranteed quality on every job
Clean & Tidy
We leave your space spotless
On-Time
We show up when we say we will
Responsive
Fast, professional communication
Exact Pricing
No surprises, no hidden fees
5 Promises Kept or the Job is FREE
If we donβt deliver on every promise, you donβt pay. Itβs that simple.
Our Guarantees
Backed by Guarantees That Actually Mean Something
$5,000 Love Us or Hate Us Guarantee
Price Match Guarantee (Apples to Apples)
5-Year Material Warranty
15-Year Service Warranty
Friendly, Professional Technicians
When you choose Five or Free, youβre choosing a company built around accountability, service, and doing things the right way β every time in Livermore.
Ready to Book?
Get Your Free Duct sealing Quote in Livermore Today
Fast, same-day electrical and HVAC service in Livermore. Call now or request a visit β backed by our 5 promises guarantee.

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