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We provide installation and repair on Gas and Oil Furnaces, Heat Pumps, Air Conditioners, and Boilers. We service Greensburg, Irwin and North Huntingdon, Youngwood and New Stanton, Latrobe and Ligonier, Delmont and Export and more. Demilio Heating and Cooling will provide you with the ultimate in heating and air conditioning with a custom system. Demilio, Inc. is dedicated to providing the best possible solution for your home or business.

You can count on us to provide you with a system and solution that fits your unique needs and since we've installed many systems in this area, we've earned a reputation for doing the job right the first time.
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At Demilio Heating and Cooling we want to provide you with the best furnace, air conditioner, or heat pump at the best bang for your buck. With that said, we try to provide you with the most up to date HVAC specials, tax credits, and rebates to give you the ease of your mind knowing you got the best deal.
Have an HVAC problem? At Demilio Inc, we're experienced in handling a wide range of HVAC installation and repair needs. Only the highest quality parts and heating and air conditioning equipment will be used to fix your system. You are the most important person in our business, and our company was built with you in mind.
Carrier knows air conditioning. After all, we invented it-and we've been perfecting central air conditioners for over a hundred years. Our advanced Infinity Series offers our highest efficiency in central air conditioning, while our Performance Series and Comfort Series products provide economical efficiency and complete comfort.
The perfect heat source for your home's radiant system, innovative Carrier gas- and oil-fired boilers deliver consistent warmth without the noise and draft associated with forced air systems. The higher the AFUE percentage, the more energy efficient. The Comfort 80 Boiler is just what you'd expect with traditional Carrier quality: cast iron exchanger and gas-fired. Our advanced engineering keeps your bills low, with up to 81.5 AFUE rating. The Performance 90 Boiler provides comfort in your radiant heat system.
Reviews (9)
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Bruce Weyandt
May 26, 2022
I had a unique job. They removed 2 furnaces and installed one in a different location. I had specific (probably nuisance) requests because of low ceilings which they accommodated perfectly. The tech's showed up each day, did their work and cleaned up beyond my expectations. I'll definitely be calling them again. Service: Heating system installation
Charlie
May 24, 2022
Critical: Quality Demilio charged us for free estimate after telling is our A/C needed replaced when in reality only needed new batteries in thermostat! Shameless.
Dawn W.
Nov 14, 2021
Plan to make these folks my go to company. They were prompt, did the work quickly, no messing around and still friendly. Highly recommend. Oh, and they made no smart-aleck comments about our older heater/air conditioner, as some other have. Services: Install thermostat, Heating system repair, A/C system repair
Julie Kiser
Oct 16, 2021
Very Friendly and helpful! Called and they were able to get me an appointment the next day was told I needed a whole new ac unit by another company and this company came out and fixed my ac within 20 min
Angie Giuffre
Jun 25, 2021
After calling several companies for estimates, I decided to go with Demilio's for an install of a new furnace and central air. Ken was professional and very helpful throughout the whole process. Definately recommend them. Service: Installation
Leahcim
May 03, 2020
Excellent installers and excellent sales staff. New furnace and new air conditioner. Great price!
Rich Grzelewski
Apr 16, 2020
We lost our air the evening before. They set up a tech to come out. He was running late (several times), which I understand, but call and say he'll be late (you know how that eats up a day). By the time the tech arrived, the unit had already been opened up for another company's estimate (which was free, of course), so no work had to be completed. The tech(s) told my wife the fee for their time was $80.00 and they needed her credit card before they left.

I was never told about the fee over the phone (the several times I called), nor was an $80.00 fee mentioned on the website. The tech(s) told my wife what they believed might be the issue, but couldn't be sure until an estimator came out the following day. She was told if we decided to go with them for an install, the fee would be rolled into the total bill.

I understand people's time is valuable, especially small business, but mention it somewhere.anywhere, so folks aren't blindsided. Lesson learned: Call the 8 other local companies that don't charge a fee for a quick look.
Amanda McDivitt
Jan 31, 2020
My husband and I were looking for someone to do ductless AC/Heat units in our old brick house. Demilio, Inc was referred to us and I am thankful they were! They were very informative in which units to purchase. Their installers were also amazing! They let us know when they were coming, what they needed to do and they did everything from run the electric to showing us how to use the units! I was so comfortable with the installers at my home as well which is soooo important! I would recommend them again in a heartbeat!
Crystal Hauser
Jun 02, 2019
The technician that came out didn't listen to anything I was telling him. Then he replaced the thermostat. Later on that day the furnace was still acting up so I got second opinion from a different company. The first technician from demilios told me my furnace didn't need services ever but when the second company came out and called the navien company that made my furnace we were told it needs serviced at minimum every two years.

And my thermostat that demilos technician changed was working perfectly fine. Dave demilio contacted me personally and was very unprofessional, rude, degrading, and vulgar. The technician from demilios went to my father in laws house and I was told because it was a nicer house and he was expecting a tip!