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Air Tight Air Systems installs heating and cooling systems, and its Google page holds a 2.6-star average from 5 ratings. A 2026 customer said the company installed a three-head heat pump system and that the A/C was not cooling after about six months. That customer said Derek, the owner, re-pressurized the system as a temporary fix, later diagnosed a bad Samsung unit, and then did not respond to calls or texts about scheduling the replacement. A 2023 customer said the company responded quickly to an estimate request, did not over-recommend a system, and completed the installation in a day. A 2022 customer who had central air installed said the technicians were friendly and courteous. A 2022 customer said a technician arrived 20 minutes late, charged for two hours plus travel time after a phone quote of $85, and called the problem a bad compressor; that customer said a second technician fixed it that day for $300. A 2023 customer said they were told they could get a rebate and called that a lie.
We hired Air Tight Air Systems, to install a three head heat pump system.The installation was completed approximately 1 1/2 years ago. For the first 6 months the system seemed to work fine. We then noticed the A/C was not cooling. We contacted Air Tight Air Systems to check the system. After several attempts, Derek, the owner responded. He apologized for not getting to us sooner. He looked at the Samsung system, and said he reboot the system, by re pressurizing. This was a temporary fix, until he promised to return. The fix did not last long. I reached out to Derek, several times.Asking if he would please schedule us to do the proper repairs.Derek, did finally respond and diagnosed, the problem as a bad Samsung unit. Derek, reached out to Samsung, and they said they would send a replacement. I was present during the conversation. This was two weeks before Thanksgiving. I reached out to Derek approximately three weeks later, to see if the Samsung replacement had arrived. Derek, responded yes. It is now mid January, and though I have made several more attempts to have Air Tight Air Systems schedule the replacement, they will not respond to my calls or texts. I had hoped to resolve this unnecessary exercise professionally, and did make one last call. At this point I will file a complaint with BBB, and contact my attorney to resolve the hard way. Ralph Precopio
Air Tight Air Systems responded very quickly to our request for an estimate. They did not over-recommend a system just to make extra money, but were thoughtful and knowledgeable about what sort of system would be right for our home. Derek was very conscientious about scheduling the installation for a time that was important to us, and the work was completed in a day. I can’t recommend Air Tight enough, and am very pleased with the work they did.
The vendor is not registered for heat pump installations. This guy lied to us said can get rebate.
EXCELLENT WORK! I had central air installed the technicians were very friendly, professional, and courteous. Highly recommend!
Beware… Technician showed up 20 minutes late and diagnosed the issue in 20 minutes. He charged me for two hours. On the phone I was told it would cost $85 and nothing was mentioned about travel time. The technician charged me for travel time as well. He also misdiagnosed the issue. He said it was a bad compressor which he quoted me as costing over $1500 to repair. I got a second opinion and the second technician fixed it that day for $300.
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1 change recorded — last scanned Oct 30, 2026.
Typical Maine range for this kind of work, from regional averages — not a quote from Air Tight Air Systems. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$4,500 – $10,300
Typical HVAC project around $7,400
Same-day leak repair4.4
60-amp garage sub panel installed4.1
Same-day furnace repair3.8
