MaxSeal LLC
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Duct and vent issues
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About
We’re a data-first company improving
HVAC through specialized duct sealing.
Using advanced Aeroseal technology, we
deliver measurable results—more comfort,
lower energy bills, and reduced emissions
for homes and buildings.
Overview
Serves Campbell, CA
Background checked
4 employees
2 years in business
Business hours
SunClosedMon7:00 am - 7:00 pm
Payment methods
Ask this pro about their preferred payment method.
Services offered
Duct and vent type
Heating
Dryer
Exhaust
Other
Building height
Single-level
Two-story
Three-story
High-rise
Property type
House
Condo/Apartment
Townhouse
Business
Reviews
Exceptional 5.0
33 reviews
5
100%
4
0%
3
0%
2
0%
1
0%
Tony H.
Jul 22, 2024
From Google
I couldn't be more impressed with the entire process. Professional service combined with technologically advanced equipment. The day went smooth, and the results were astounding. Over 90% of my duct leaks were sealed, which means my HVAC system runtime was nearly cut in half - plus, airflow at my registers improved over 20%. Before MaxSeal, if it was over 100 degrees outside the house never used to get below 80 degrees, with the unit running for 14 hours straight. Now it gets down to 78 degrees, and it only runs intermittently. I would recommend this to anyone who wants to see a major improvement on the performance of their HVAC system. I can't wait to see how this summer's bills compare to last summer.
MaxSeal LLC's reply
Thanks Tony. You had a fun project for us and I'm pumped that your AC runtime has been cut nearly in half. Hopefully you'll get many more years usage out of you AC unit too, now that it isn't working as hard to keep up.
Tomek
Sep 7, 2024
From Google
I highly recommend MaxSeal for HVAC duct sealing. The owner of the company, Alex, is extermely helpful and professional. He was very accommodating to schedule job at my house. He was available to go over the duct sealing process using advanced green AeroSeal technology that is the least invasive and most efficient of any other duct sealing options on the market. His price was reasonable. During the sealing, Alex and his crew member were very friendly, flexible, diligent and made it a very positive experience for me. They reduced leakage in the duct system by 85%, which is well beyond any other alternative method. Alex provided me with a complete report and lots of pictures. As a bonus, he found one electrical and one plumbing concern in my crawl space from previous years. I am very grateful for his professionalism and results!
MaxSeal LLC's reply
Thank you for taking the time to leave such a supportive review. It's great to hear that you had a positive experience with our HVAC duct sealing services and that Alex and the team were able to meet your needs effectively. We appreciate your recommendation and are glad that you found the Aeroseal technology efficient and the process streamlined. It's also wonderful to hear that Alex could assist with identifying other concerns in your crawl space. Thank you for choosing MaxSeal!
Scot C.
Sep 26, 2024
From Google
Our experience with Alex and Max seal was just amazing. I never realized the amount of work they do to seal your house. We were given initial data of the house leaks and data after sealing. Couldn't believe how inefficient our ducting system was. We were blowing over 75% of our heat into the attic and under the house. We watched as the sealing improved as the material was pumped into the vents. He even demonstrated how it sealed by cutting the input tube and we watched it seal its self.Alex and his helper sealed every vent in the house carefully making sure nothing got damaged in the process. He crawled under the house in that spider factory to check and tape ducts that were open. He kept us completely informed throughout the time he was there. Cleanup was just as painstakingly done to make sure everything was clean and picked up.I was completely impressed when I saw that there is a better than 35% improvement in flow through and a 97% seal of the vents. I had leakage of 641CFM reduced to 22CFM. Unbelievable. I'm super confident this seal will help with our heating costs in the winter. Thank you Alex for the unbelievable work you completed on my home. Who ever reads this should be completely confident Alex will treat you right and the job will get done.
MaxSeal LLC's reply
Scot, really appreciate you taking the time to share this.
Your home is a great example of how much energy can be lost through duct leakage without homeowners even realizing it. We’re glad the before-and-after data helped make that visible, and even better that you could actually watch the sealing process in real time.
Thank you for trusting us with your home, especially given the extra work in the crawl space. We always aim to be thorough, careful, and transparent every step of the way.
Those improvements in airflow and leakage reduction are exactly what we want to see, and we’re confident you’ll feel the difference when the colder months come around.
Debbie C.
Oct 2, 2024
From Google
MaxSeal LLC's reply
Jim S.
Dec 30, 2024
From Google
We had Alex at MaxSeal do an AreoSeal of our ducts. In short, it was an excellent service and product and I would recommend this service.Our house was built in 1950 and I'm sure our ducts have been leaking a bit. They have been insulated and are in general good shape, but we wanted a tighter seal. We want to extend the life of our current furnace, have a more even distribution of heat (more comfort), and a cleaner system.Alex and company came in, did a pre-seal analysis, revealed that our system was pulling in 256 CFM as dirty unconditioned (cold) air from the attic, it would then have to heat that air prior to blowing it into the supply ducts. We had 331 CFM leakage, resulting in 20.7% loss.Alex and his team did the areoseal, which took a few hours. It was very interesting to watch in real time how the total loss continued to drop as the ducts were sealed from the inside.The post analysis showed a total reduction to only 22 CFM, which was about 1.4% loss.. That is remarkable.We have been living with the sealed ducts for about 4 months or so and we have noticed a few good things: the furnace is running less often. Also, the heat is much more evenly spread out throughout the house/ducts. Before, there were some rooms that were not getting enough air flow, but after sealing, all the rooms had an increase of supply, balancing out the system very nicely.Instead of spending considerable more for new ducts, Alex and MaxSeal sealed our ducts from the inside for a lot less money. We feel we got great service and a superior product to give us more comfort and extend the life of our system.
MaxSeal LLC's reply
Thank you for the fantastic review, Jim! It's great to know that you've already noticed improvements in your home's comfort and the efficiency of your heating system. We appreciate your recommendation and are glad we could provide a cost-effective solution for you.
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Alex Blakey