MaxSeal LLC is an HVAC service provider located in Campbell, South Bay. The company has a 5-star rating based on 31 customer reviews. More information is available at maxseals.com.
MaxSeal LLC did an outstanding job improving my home air conditioning system. From start to finish, they were extremely professional, efficient, and easy to work with. The owner was honest and straightforward, taking the time to explain everything clearly without any pressure. Their crew was equally impressive—skilled, respectful, and committed to getting the job done right. On top of that, the pricing was very reasonable for the quality of work they delivered. Their company’s solution to improving the ducting system is the best value proposition hands down. To boot, I have medical quality air systems at my home now provides the best peace of mind. If you’re looking for a reliable company that truly stands behind their work, I highly recommend MaxSeal LLC. They treated my house with respect and made sure the house was clean after the job was done. Best part - you have engineering data that their job was done right as you have pre- and post project results.
Dedicated staff and crew! My home had over 45% of duct leakage and the team has managed to reduce the leakage by 82%! They even discovered a duct that wasn’t terminated correctly in my crawlspace. I was basically heating up my crawlspace. Its truly amazing to find a business that go above and beyond to fix an issue! Attached before & after pictures Thanks Alex & crew!
Campbell customer story. I saw MaxSeal ad on Facebook and thought this was worth a try. I’ve been through 5 different HVAC tech’s trying to resolve a heating/cooling issues to not much avail. In summary the previous HVAC techs were focused on the major systems for fault. I suspected leaky ducts, but all the previous tech’s assured me no issues were found. MaxSeal, Alex and his team, quickly performed a manual inspection and air flow test. There were many shortcomings in the existing duct work, as well as some broken, leaky and pinched ducts. MaxSeal fixed all these issues. Besides redoing and rerouting some damaged ducts, they installed 3 dampers to help steer air. The numbers in attachment show everything. This is measurable air flow in CFM at each floor register. The other photo shows live data collection during injection of the MaxSeal product. You can see a reduction of ~50 CFM in just a 5 min span and still dropping as the product is atomized into the duct work. Target is typically less that 50 CFM total and they got it down to 41. I found the whole process quite interesting. I still have room for further optimization, but for now we can finally get through the seasons a bit more comfortably without over stressing the equipment. I would recommend MaxSeal for anyone struggling with conditioned air flow related issues. Very professional, respectable and overall pleasant to work with.
Amazing results from the process performed by MaxSeal! I was a bit skeptical as the product used sounded almost too "magical" but it really works. After a couple of hours of injection, all of the invisible holes in our HVAC ducts were sealed. How can we know? The air flow increased A LOT! It increased so much that we can hear the difference ! It actually revealed a small issue we had... our registers suck. With stronger air flow, some make rattling noise or couldn't stay properly closed, a sign of success from the process, even if it is a bit annoying that I had to change some ;) Finally, as a nice bonus, Alex the owner and Max who came to do the assessment and actual sealing process were super nice guys!
It was a wonderful experience working with Alex and his teammates, Daniel and Marco. Alex was honest and upfront about expectations, clearly explaining which improvements were essential versus simply nice to have. The team was professional, finished on time, and left the site clean and tidy. They were knowledgeable and patient, and they addressed all of my questions thoroughly. The work feels like great value for money, especially since I’ve seen a noticeable improvement in my HVAC runtime. I also have a guest room that used to feel a bit colder in winter and hotter in summer, and after the MaxSeal team’s work, I could quickly tell it no longer feels colder this winter. Great work, guys!