AC went out in the middle of summer in triple degree weather. It was a VERY old unit. He installed a new one THE NEXT DAY and blew in some fresh insulation in the attic because it was virtually nonexistent! He was very responsive, prices were reasonable, and he made sure I was happy with the results. He's now my go-to HVAC guy. read more

We had our AC stop working on my Birthday of all days! Reality company had Mark out to check it out with in an hour or so. He found the problem and made his recommendations. Due to it being late afternoon he wasn't able to check to see if what he needed was available. Called first thing the next morning saying he located what he needed and could be at my house with in an hr. Mark arrived and got right to work. On a 103 day mark was up in the attic replacing the condenser. Very professional and hard working to make sure we would be up and running that day. Thank you again Mark and I would recommend anyone using him! read more

Recently, my wife and I noticed our air conditioning was no longer blowing cold air. Given that it's not quite summer here yet, we decided to wait on repairs since it was something we hadn't budgeted for, that's life I guess. Ofcourse, two weeks go by and it's no longer blowing air AT ALL! We felt a bit of urgency since things seemed to be going from bad to worse. We decided to at least have some one come out and see what might be wrong, and quote repairs. Out of 4 businesses we had come out, Mark had the best estimate, and they all said it needed to be replaced. The unit was decades old and came with the house, and looking at that eyesore we figured it would need to be replaced eventually. He worked within our budget, and scheduled perfectly around the time off I had available. The whole thing was done in a day, somehow I expected this to take longer ( I'm no expert ). All in all, Mark was incredibly professional, seemed to have a body of knowledge and experience well beyond what was advertised, and if I have to have anyone back to service it, it would be him. My only other experience dealing with contractor's was back when I lived in an apartment. I had to have a wall heater replaced, and it was an absolute nightmare. Fortunately, this experience completely redeemed my previous one. I would highly recommend Mark Kozell. Lastly, the new AC blows way harder than the old one, and is freezing cold! Which is great, since summers here are ridiculously hot. read more

We had a problem with our upstairs AC Unit and he came in same day within 2 hours and went on the roof and fixed the problem. My family and I thank him so much. He was terrific! read more

I paid Mark to close off my old air intake system because it was in my foundation and most of the pipes had collapsed. I paid him $675 to close and seal off the old system and to install a new intake spot in the wall next to my furnace. The spot he advised me was in our main living room next to our tv. After he installed it, whenever our heater came on, the sound of the intake was so loud you have to yell to talk to anyone else. I complained that it was too loud and he said that it sounds like it needs more area to intake air. His idea was to cut a hole in the metal that he sealed off our old intake so it could get some air through there and it should be quieter. He came and did that and it wasn't quieter and now we have the original problem that our system is trying to intake air through collapsed pipes in our foundation. He told my husband to buy a stereo system to make our tv louder and to just place a filter over the hole in the ground he made. I am sure it is not up to code. I told him I was very unhappy with this solution and that I want the hole resealed through text message. I have called and texted him for days and he doesn't return any or my calls or texts. read more

I'm so grateful for this service! He came out and quoted a fair price( yes I did some comparisons). Fast efficient service. I feel I can trust Mark with all of my apartment complexes read more

Mark did electrical, air, and heating work on my home. He did an excellent job and I was extremely satisfied with his work. He has reasonable prices. I would definitely recommend him to others. - Richard D. read more