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Dempsey Energy

Central A/C Installation, Central A/C Service or Repair, Heat Pump Installation and Replacement,

About us

Dempsey Energy is a family owned and operated full-service HVAC company located in North Attleborough. We feel your property is comprised of several systems to ensure comfort and convenience. However, just like any equipment, major heating and cooling systems will eventually require service to keep it working efficiently. If you live in North Attleborough, or anywhere in Massachusetts, count on Dempsey Energy for all your heating and cooling needs. With over 30 years of experience, our team is highly familiar with the common nuisances and solutions to get your major systems running efficiently again. Call today to schedule an appointment, as we're anxiously awaiting your next project and looking forward to keeping you comfortable all year round!

Business highlights

Emergency services offered
24 years of experience

Amenities

Emergency Services

Yes

Free Estimates

Yes

Accepted Payment Methods

  • CreditCard
Reviews
3.817 Reviews
Number of StarsImage of DistributionNumber of Ratings
5
65%
4
0%
3
6%
2
6%
1
24%
Showing 1-17 of 17 reviews
Maureen T.
Sep 2026
5.0
Google Review
Amazing customer experience! Very professional! I highly recommend Mathew @ Dempsey Energy! I’ve never been disappointed with service!

Michael M.
Sep 2026
5.0
Google Review
Excellent worker

Paul E.
Sep 2026
1.0
Google Review
The system that was installed in 2022 by these guys were unlike anything I've seen before. A 2200 sq/ft 2 story house had high velocity ductwork/supplies in a standard blower-compressor units. They charged me 4K to change out a coil. House still didn't cool down. Called again ,$149 a pop, to "clean" out a filter. No change. Heat wave came and went. After going to their office about this. They sent out their master technician. He viewed the system and "I've never seen a system like this before" . Finally got a hold of a company that didn't bs me on anything. Will be doing another review on that company shorty. If I could I would post photos of the -mercury thermostat that controlled the ac only -The trunk line that was basically 2 pieces of sheet metal curved into half cylinders -The return lines that were installed in a pantry and another near a supply - The inadequate blower and condenser - The high velocity supply of 8 total for 2200 square foot house

Stephan G.
Sep 2026
5.0
Google Review
Robert is an amazing tech. Very knowledgeable and trustworthy.

Ruth Y.
Sep 2026
5.0
Google Review
Technician very knowable, answered all my questions. Robert Eugene And really knew his stuff, I'm glad to have him and dempey energy for heating sevice

Jim P.
Feb 2021
5.0
Yes, I recommend this pro
They did a great job, and we were thrilled with their service. We would definitely hire them again.

Melissa H.
Nov 2019
1.0
$125
I have appliance insurance through another company. I contacted them on 10/16/19, and Dempsey was assigned to me for servicing. They came out on 10/17, told me they needed another part. They returned on 10/21, only to tell me that more parts were needed. I hadn't heard back from them, so I called on 10/25 to get an update. They were still waiting for parts. 1 week went by with no contact from them. I contacted them on 11/2, and they scheduled someone to come out on 11/6. They didn't show up! When my insurance contacted them, they informed my insurance that they were still waiting for parts to come in. I'm seeking services from another contractor now.

Kathleen W.
Jun 2018
2.0
$75
Not good we got a flood.

Kathleen W.
Dec 2017
3.0
$99
The work was done good. But I'am trying to get a copy of the bill. Called 2 times.

Mike F.
Dec 2017
5.0
Yes, I recommend this pro
$59
The service technician was friendly and did a nice job.

Linda Z.
Oct 2017
1.0
$200
Don't take the deal. They changed me $54.00/toilet and then charged me again for parts and labor. So it took him 15 minutes to put in 2 little rubber rings to stop the slight flushing. I paid $109.00 for the deal and then another $95.00 for 15 minutes to put in 2 little rubber rings. RIP OFF!!
Response from Dempsey Energy
"I'm sorry you were unhappy with the pricing, it clearly states that the deal is $44.25 per toilet to Angie's list members and $14.75(per toilet) to the service provider. It further states the deal is to make sure all 5 parts are in working order and identifying any repairs necessary. You needed two parts to fix your toilets (1 for each toilet)$20 each and it was 1/2 hour labor ($45) which would be the $95 charge. Please let us know if you have any other questions or concerns we would be happy to help you."

Elizabeth M.
Aug 2017
5.0
Yes, I recommend this pro
$375
It went phenomenal. It was the best experience I have ever had with someone coming to my house to service it. He was very pleasant and joked with me which helped my anxiety level. I would absolutely hire them again. It was a very pleasant experience,the price was right and they were very prompt.

Angela J.
Aug 2017
5.0
Yes, I recommend this pro
$4,500
It went very well! They did a beautiful job, very efficient.

Hilary M.
Aug 2017
5.0
Yes, I recommend this pro
$185
Exceptionally well! Loved the upfront pricing! B for responsiveness but hey others have emergencies too right? Love that they have service plans so I got immediate savings too!

Mary J.
Aug 2017
5.0
Yes, I recommend this pro
It went very well. They were on time and efficient. The techs know what they're doing. They did a great job.

HARVEY L.
Jul 2016
5.0
Yes, I recommend this pro
When I called for an estimate, I said that I had already had an $800 estimate for the repair and that it was high enough to get me thinking about replacing the unit. Gary O'Shea (who has Nate certification) came out the next day, said that although he would love to sell me a new air conditioner, he thought he could get another five or more years out of my old one, gave me an "outside" estimate that was less than half of the first one, and made the repair for even less.

Michael M.
Jan 2016
1.0
$189
I made the mistake of signing a contract with this company Charged me a lot more than they told me.  Should have been $89 and ended up charged approximately $189.  Contract said they would discount parts at 25%.  When I tried to get something replaced, they laughed at me and kept pushing me around to different people.  Took 4 attempts to get the discount.  Couldn't get a straight answer and put me on hold for over 10 min.    No qualifying statement in the contract about the 25% and how it is works.  I would not recommend anyone use this company.

Licensing

Licensed*

Trade License Number

4125-PL-C

Trade License Expiration

05/01/2028

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

Dempsey Energy is currently rated 3.8 overall out of 5.

Dempsey Energy accepts the following forms of payment: CreditCard

Yes, Dempsey Energy offers free project estimates.

No, Dempsey Energy does not offer eco-friendly accreditations.

Yes, Dempsey Energy offers emergency services.

No, Dempsey Energy does not offer warranties.