HVAC Companies Glen Rock

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Awesome A/C Heating company. Great White has been doing everything in my house since the day I bought it! Wouldn’t call anyone else.

~ Vincent Risalvato III

I’ve been using Great White going on 12 years now for my Air Conditioning systems. My boiler just blew and flooded half of my basement. I got 3 quotes from reputable companies, them being the 3rd They were the only company not trying to over-sell me on things I didn’t need. They gave me 3-different efficiency options with no pressure, only advising me on what they would do if it were their home. They showed up on time, were very neat and did a great job. The neatness of the piping and overall job is top notch. Very happy with their service and will continue to use them in the future!

~ Joseph Novielli

Great customer service. Very professional.

~ Seth McGowan

I used Great White Mechanical to replace my 20 year old HVAC system (heating & cooling). Dylan walked me through all my options and answered the many questions that I had. The day of the install, Dylan and his team were on-site early. The install went seamless and I would definitely recommend Great White to my family and friends.

~ Angie M

Referred by my neighbor, who's been using them for ages. We had 2 AC companies out to find a refrigerant leak with no luck. We called and spoke to Larry, who was extremely helpful and knowledgeable. Later that day, he sent Billy over and he disassembled our equipment - within 30 minutes Billy located our refrigerant leak and was able to repair it. It’s amazing the difference when you deal with a company who knows their stuff - saved me time and money.

~ Brendan Durkin

Amazing and honest company! I use them for my restaurant and for my home. A+

~ Malissa Wright

Dylan and Great White Mechanical are the best in the business. Our AC went on the fritz, a friend referred them. They came out, gave an estimate, worked with us on our budget and got our unit up and running in no time. They did such a great job I referred them to two friends to get their HVAC done. Real professionals.

~ James Lafratte

They showed up on time, were extremely clean and beyond professional. I would strongly recommend Great White Mechanical.

~ Dan Sweeney

Couldn't be any happier with the service! Showed up promptly and the technician was friendly willing to help solve the issue, which was a relatively simple fix, instead of upselling a new HVAC system which the previous contractor had pushed. It's important to work with a company that has your best interest at heart.

~ Jonathan Steward

Excellent service! Diagnosed quickly and fixed so well that it works better than it did brand new! On top of that, Jim was fun to chat with while he waited to make sure the repairs took care of the whole problem.

~ Otis Carlisle

Took the time to show and explain what the issue was to me. Fair pricing and quick service. Will definitely be using when future issues arise.

~ David Prows

Jim came out same day and with parts to get my almost 20 year old A/C working again. He even worked through the rain. Great company will use again. I have had the pleasure of working with him on a commercial job as well. No issues.

~ Jeanie Wilt

Great service, Honest, on time, couldn't ask for better service.

~ Marc Phelps

I had a great and very professional experience. They worked around my schedule to get the job done. I would advise anyone to use these guys.

~ Josh Howard

Quick service and no messing around. Jim is great!

~ Wesley Kuhn

Jim came out to work on our furnace on the same day it quit working. We needed a new one, which he installed quickly to keep our family warm. He was incredibly responsive, knowledgeable, thorough and trustworthy. We will absolutely be working with him again!

~ Michelle Wells

On-Demand Heating and Air resolved my furnace issue in a respectful and timely manner. We highly recommend them! Thanks for your speedy assistance!

~ Marketing Director, Union Chapel Dentistry

Furnace was not functioning properly. Prompt communication and response from On Demand. Quickly and accurately diagnosed the problem. Thank you!!

~ Amanda Weimer

Fast service reasonable pricing, polite techs... Couldn't ask for more! Jim did a nice job and I would recommend him any day!!

~ Steph Gaudette

On Demand Heating and Air came out to our house to clean both our furnace and air conditioning unit of our current home. They were On Time, honest, and their prices were well the under competition. We were so impressed with them that we had them do the inspection of our hvac in our soon to be new home. Again On Demand Heating and Air prices were well under the competition and they will be installing the new air conditioning unit on our new house. I encourage you to try them before you call the larger companies. Bigger doesn't always mean better!

~ Gordon Steel

Fast and affordable. Took the time to explain the process of my repair. Vey courteous! I would definitely recommend this company and will definitely use them again for any future services!

~ K. J

I didn't think I would get anyone out here with the roads being so bad but Hi Tech still came out, crawled up on our roof and took care of thawing out our cooling towers. I was back in business in no time. Thanks guys.

~ J. C

Was told by another contractor that I was going to have to replace my system (heat pump) because they could not get to freon leak to make repair. Technician removed my A coil and was able to solder leak where it had rubbed on enclosure. They pressurized system and came back 2 days later and leak was repaired. Added freon and been working good since.

~ K. L

Came out after hours very fair priced, could not be better. Great service.

~ M. B

Replaced 3 out of 5 air conditioners all located on roof. Work was done in a safe timely manner and within budget

~ S. D