Find top-rated Pros in your area
Enter a zip code and get matched to businesses near you.
Geo Icon

Demilio Heating & Cooling

Electrical Baseboard or Wall Heater - Repair, Brick or Stone Fireplace - Install, Brick or Stone Fireplace Repair,

About us

Demilio, Inc is a recognized leader in the Westmoreland County central air conditioning & heating industry serving homeowners and businesses. Dedicated to providing ultimate heating, cooling and air conditioning solutions, heat pumps, furnaces, boilers, and air conditioners.Demilio, Inc is a family-owned Pennsylvania heating and a/c contractor invested in providing you with the very finest strategies, heating and cooling systems at reasonable cost.

Business highlights

Emergency services offered
76 years of experience

Services we offer

Heating & air conditioning - service & repair. Commercial refrigeration.

Amenities

Emergency Services

Yes

Accepted Payment Methods

  • CreditCard
Reviews
4.319 Reviews
Number of StarsImage of DistributionNumber of Ratings
5
79%
4
5%
3
0%
2
0%
1
16%
Showing 1-19 of 19 reviews
Alayna D.
Jan 2025
5.0
Yes, I recommend this pro
$100
Best service I’ve had to date with anything home-related. Back story… I’ve had three different companies come out to look at my furnace and was charged each time. Each generally saying that they had no idea what was wrong. After spending about 1k on having them out and them replacing various parts to troubleshoot, I called Demilio. Demilio returned my call within an hour on a Friday. I they even offered to come out immediately that night, then said they had availability over the weekend. I scheduled for the following Monday due to the break in the weather. Their technician was prompt and polite. He was prepared with all equipment and had my furnace diagnosed within five minutes which impresses me because of the number of people looking at it before. He called his company to check inventory for repair and also offered me additional options in case I would prefer to upgrade furnace when compared to repair cost. All of this happened within fifteen minutes. They had everything in stock.

Rachel P.
Nov 2018
5.0
Yes, I recommend this pro
$209
Prior to calling Demilio, I changed the fuse and the filter to be sure that wasn't the issue. When I called, the woman on the phone to inform her we had no heat, she was polite and stated that she hoped to have someone at our home before lunch. Not long after calling Demilio, the technician arrived. The technician came in, ran diagnostics, and discovered that the ignitor was bad. He promptly researched and picked up the part and returned to install it. Currently, the heat is now working and we are beginning to warm back up. Our experience was positive and we will definitely consider Demilio when servicing heating and air conditioning in the future!

Marcie L.
May 2017
5.0
Yes, I recommend this pro
They were late but nothing wrong with fan. Had to change some batteries which cost a lot.

Donna D.
Feb 2015
1.0
$75
unknown

Charles N.
Dec 2014
5.0
Yes, I recommend this pro
$360
I could not have been happier with the purchase and installation

CHARLES W.
Dec 2014
5.0
Yes, I recommend this pro
$1,900
unknown

Jon G.
Dec 2014
5.0
Yes, I recommend this pro
$815
Everything went great.  Between the quote and the day of service, everything was complete within a week (the project was done in less than a day).  The worker was very professional, cleaned up the work area very well, and the finished project has made a huge difference in bringing heat upstairs.  We would definitely have them do some work for us in the future if the need arises.

John C.
Apr 2014
5.0
Yes, I recommend this pro
$3,400
unknown

Robert W.
Jan 2014
1.0
$1,100
Carrier Heat Pump install 7 years ago. Thermostat had 10year warranty.

Thermostat went bad. Call Demilio Heating/Cooling.

He charged $360 to clean outside of heat pump and left to go get a replacement thermostat.

The technician told my wife the thermostat was not covered under warranty and installed a new

$700 thermostat. Total bill $1100.00.

Never left a itemized bill. Took old thermostat(still under warranty).

I came home to find this out. Called and left a message for Demilio to call in morning.

The company used to be reliable. I would not trust them anymore.

Response from Demilio Heating & Cooling

"We are sorry you find us an unreliable company. Your thermostat was a Carrier INFINITY CONTROL S/N: 4407W000291. In the thermostat serial number you can find the 07 which shows the manufacturer year, and we installed the unit in 2008. The thermostat had only a 5 year warranty which put your thermostat OUT OF WARRANTY proving your statement was incorrect. The old Infinity Control is no longer made and was replaced by a touch screen Infinity Control. We did not have inventory of the new thermostat at the time of call. Our technician had to drive to our wholesaler to pick up new thermostat. We discounted the price of the new thermostat. We provided maintenance on the Heat Pump, Furnace, filters, and installed the new thermostat at a total of $863.20, not the $1,100.00 you mentioned previously in your complaint."


Angela O.
Sep 2013
5.0
Yes, I recommend this pro
They were very professional and thorough. They were very prompt in arriving and fixing the HVAC.  They were also very affordable.  I would highly recommend them to anyone else looking for HVAC services.

Susan H.
May 2013
5.0
Yes, I recommend this pro
$100
Came to house on time. Explained what all that was going to be done. Once finished explanined everything...what needed done or suggestions. I always have trouble reprogramming my thermostat. Talked me through it as I did it. The total was the amount I was told.


Vance B.
May 2013
5.0
Yes, I recommend this pro
They have always done great work. They I have used them personally and recommended them to others.

Rick M.
May 2013
5.0
Yes, I recommend this pro
The service turned out well. They came quickly and did a good job. The service man was prompt and on time. He was also very curteous.

Elizabeth G.
May 2013
5.0
Yes, I recommend this pro
The service has been excellent. They provide good service. I have no complaints with them and highly recommend them.

Margaret D.
May 2013
5.0
Yes, I recommend this pro
They did a fine job. They were available. We called a number of companies and they were the only ones that were available right away. We were happy with their service.

MICHAEL B.
May 2013
5.0
Yes, I recommend this pro
The service was very good. They are awesome. Whenever we need filters that bring them right to our door which is nice and saves us time. We have been really happy with their service.

Peter P.
Feb 2013
4.0
$310
My Oil furnace was making noise which I felt was a problem with the pump on the fuel line (It was not leaking, just making noise).  I called DeMilio and scheduled a cleaning and tune-up with the understanding that the tech would also look at the noisy pump.  The DeMilio tech came on the appointed day and time and diagnosed the problem saying it was probably the pump coupling and retrieved one from his truck.  After replacing the coupling, the noise was still the same, so the tech said it must be the pump.  He checked his truck and had a pump on hand so he proceeded to r&r the pump.  This is where we ran into a problem.  The tech asked me to cut off flow in the fuel feed line, which I did, but he said the second line (an overflow return line) would be okay (I suggested that we separate it at a junction on the wall nearby and stop it up), but we left it alone.  Well, when he removed that line, heating fuel began gushing out of the return line all over the inside of the furnace, including throughout the air intake area.  I suggested he might redirect the tubing (since it was flexible copper tube) over a bucket he had with him, which he did, but the damage was already done.  He worked for about 5 to 10 minutes wiping up the fuel spill with paper towels, meanwhile, the fuel was still freely flowing out into his bucket (which was also filled with dirty rags, old furnace parts and used paper towels).  I then retrieved some materials to plug the end of the tube with some success, fearing his bucket would overflow.  The tech could not remove the plugs from the new pump, so i took him to my garage to let him use my vice, enabling him to assemble the new pump fittings.  Upon returning to the furnace, the tech attempted to reattach the return line over top of the bucket but soon realized that the fuel would flow through the pump and all over the inside of the furnace again.  In his haste to get the pump back out over the bucket, he kinked the return line (he later squeezed the line with pliers to take some of the kink out).   Eventually I took it upon myself to disconnect and plug the return line at the junction on the wall and stopped the flow of fuel.  The tech was then able to install the pump and the lines without further mess and loss of fuel.  The tech was a really nice young man who, it seems, was not well versed in oil furnaces as he kept apologizing profusely saying he had never experienced anything like this before.  The Tech then replaced the nozzle as part of the tune-up. To his credit, he was apologetic and tried his best to clean up the inside of the furnace.  However, I spent the next hour+ cleaning the floor and the inside of the furnace with degreaser and odor neutralizer to no avail.  The air intake compartment still smelled like diesel fuel and spread that smell all over the house.  The smell was so bad that I got physically sick to my stomach from it and seriously considered getting a hotel room for the night.  We toughed it out, but it was over week before the smell was cleared out.

UPDATE:
Dave DeMilio called me this morning and was very cordial.  He indicated he had misunderstood the problems with the service call, apologized, and wished to make things right, which he did.  He also indicated that he spoke with the service technician who had performed my work and addressed and corrected the issue with him.  He seemed earnest and his actions indicated he was such.  As a Christian, I am a believer in second chances, so I have updated my review to indicate that I would, indeed, be willing to call them again for service.
Response from Demilio Heating & Cooling

"Customer called three weeks after the job was serviced when he received his bill. He never called after the service man fixed his furnace to complain about the quality of the service, only after he received his bill. He called because his oil furnace was down and no-heat and we responded the same day to fix the issue. All oil furnaces are piped in differently and if the original oil tank was installed properly with shut off valves, there would have been no issue with the mess. Furthermore, when our technician arrived at the job, there was already oil dripping on the shelf of the furnace due to a faulty seal in his existing oil pump. He was already aware of the oil smell when the technician entered the house because he told the service man the reason he called was the smell and noise coming from the furnace. On occasions, when you open the oil lines some siphoning may occur because of the height of the furnace and the oil tank. After talking to Peter, our technician told me that their were existing oil stains on the floor. Our technician is experienced in servicing oil furnaces with well over a hundred of successful service calls on oil furnaces with no complaints other than this one. The only reason the customer is unsatisfied is because he didn't want to pay his bill. He insisted after the service call that he could have fixed the furnace with parts he could have bought from Amazon for a fraction of the cost of the invoice. He wanted the furnace fixed promptly, which we provided."


Melissa P.
Feb 2013
5.0
Yes, I recommend this pro
$1,342
They are very knowledgable and kind.  Very respectful of out home and made sure to put booties on when in the house.  They cleaned up great too.

Bridget L.
Jul 2011
1.0
$6,500
 I wouldn't recommend these guys to anyone.  We had them come and replace a furnace in a house that we had just purchased.  Initially, I was happy at the responsiveness we received, but as soon as we identified a problem, we couldn't get them back out to the house.  With all the government rebates, they were not interested in fixing problems; they were only interested in new jobs and new revenue.  Here it is, a year and a half later (still having problems by the way) and I've asked for new quotes from three totally different contractors and each one has identified all the problems with the installation by Demilios.  The unit is undersized, the installation work is undesirable, and there are many problems with the duct work, which Demilio's never caught.
Response from Demilio Heating & Cooling

"This was a new house that Demilio installed new duct work 15 years previous. At the time of said work, the basement was unfinished. The builder, Art Noble, finished the basement without contacting Demilio. The contractor installed duct work in basement by another sub contractor other than Demilio. Previous homeowner lived in that house for 12 years with no complaints. Bridget purchased the house and the existing furnace needed replaced. We installed new furnace and informed her the replacement would not control the basement. We proposed a separate unit in the garage to control the comfort in the basement, and we also proposed installing a heater in the garage. Bridget refused both proposals."

Licensing

State Contractor License Requirements

All statements concerning insurance, licenses, and bonds are informational only, and are self-reported. Since insurance, licenses and bonds can expire and can be cancelled, homeowners should always check such information for themselves. To find more licensing information for your state, visit our Find Licensing Requirements page.

*Contact business to see additional licenses.

FAQ

Demilio Heating & Cooling is currently rated 4.3 overall out of 5.
Demilio Heating & Cooling accepts the following forms of payment: CreditCard
No, Demilio Heating & Cooling does not offer free project estimates.
No, Demilio Heating & Cooling does not offer eco-friendly accreditations.
No, Demilio Heating & Cooling does not offer a senior discount.
Yes, Demilio Heating & Cooling offers emergency services.
No, Demilio Heating & Cooling does not offer warranties.

Contact Information

1825 Franklin St, Greensburg, PA 15601

Share project details to get started.