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TRUSTED BY DENNIS, MA HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon211
    Verified heating and air conditioning services reviews

Find Heating and air conditioning pros in Dennis

Avatar for Cotti-Johnson Heating-Cooling-Electrical
Cotti-Johnson Heating-Cooling-Electrical
4.7(
166
)

Serving Dennis, MA and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1948

Free estimates

Emergency services offered

"On time, neat, effective. Technicians were professional, personable and flexible. I gave a "B" on cost because I may have done better if I shopped around but having the company that was installing the HVAC install the electrical as well was a good convenience and one-stop shopping."
Navien Install
Backflow
Outdoor Shower
Well Tank Replacement
Filtration Installation

+62

Response time10 hrs
69 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Braga Bros, Inc.
Braga Bros, Inc.
5.0(
8
)

Serving Dennis, MA and surrounding areas

Approved

Super Service Award Winner

In business since 1996

Free estimates

Emergency services offered

"Braga Brothers provided exceptional service during my gas furnace installation. The team was punctual and efficient, completing the job with confidence and professionalism. They took care to protect my home and explained the system thoroughly, ensuring I understand the new system. I highly recommend Braga Brothers for anyone in need of HVAC services."
High efficiency System
High Efficiency Hvac Syst
Central Hvac in the Basem
Central HVAC System
Rooftop

+16

Response time5 hrs
Response rate99%
1 neighbors recently requested a quote
Avatar for Earth Green Dryer Vent & Duct Cleaning
Earth Green Dryer Vent & Duct Cleaning
4.6(
816
)

Serving Dennis, MA and surrounding areas

Approved

Super Service Award Winner

In business since 1998

Free estimates

Emergency services offered

"Earth Green did an awesome job in cleaning out my HVAC system. Troy and Scotty were very professional and did the job with ease and high quality. I would definitely recommend these guys to anyone!"
 Before cleaning
 After cleaning
Truck Mount Duct Cleaning
Blower Motor Cleaning
Response time5 hrs
44 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Cotti Johnson HVAC, Inc.
Cotti Johnson HVAC, Inc.
4.3(
63
)

Serving Dennis, MA and surrounding areas

Approved

In business since 1944

Free estimates

Emergency services offered

"I appreciated being able to speak with someone in the office to explain my situation (leaking water heater), and having someone come to my home so quickly to go over my options for dealing with the problem. Dylan, Aaron and the entire crew were so professional and knowledgeable about the on-demand hot water system we chose to install. They were a pleasure to work with, and I would highly recommend them to friends in need of similar services."
Home Standby Generator Installation
Home Standby Generator Installation
Home Standby Generator Installation
Home Standby Generator Installation
Home Standby Generator Installation

+56

Response time9 hrs
Response rate97%
101 neighbors recently requested a quote
Avatar for RLF Heating & Cooling Inc.
RLF Heating & Cooling Inc.
4.9(
10
)

Serving Dennis, MA and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

"Bob did a new mini split install for me and I couldn't be happier with the work. He was professional, timely, and had excellent communication. He was also very knowledgeable and made some great recommendations for the project. I'd recommend him to anyone looking for HVAC work."
Response time6 hrs
Response rate97%
7 neighbors recently requested a quote
Michael Faria Plumbing
5.0(
57
)

Serving Dennis, MA and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"Michael gets a SOLID 5-Stars: Excellent work. Fair price. Punctual. Communicates very well. Mike Provided me with his proof of insurance and licenses. He even filed all the permits with the town of Dennis Port. I also had him do an emergency replacement on a broken water heater and gas line, Mike is now my new plumber. I would HIGHLY RECOMMEND using him."
Response time4 hrs
11 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for ARS - Boston
ARS - Boston
4.3(
364
)

Serving Dennis, MA and surrounding areas

Approved (Corporate)

In business since 1984

Free estimates

Emergency services offered

"ARS is absolutely fantastic and weâ ve been longtime customers. We exclusively use ARS for all our HVAC and plumbing needs and we will never use anyone else! Terrific team and outstanding service!"
HVAC System 1
HVAC System 3
HVAC System 4
HVAC System 5
HVAC System 6

+10

373 neighbors recently requested a quote
Recommended by72%of homeowners
Avatar for Hoctor Built Homes and Property Management
Hoctor Built Homes and Property Management
4.2(
109
)

Serving Dennis, MA and surrounding areas

Approved

In business since 2006

Free estimates

Credit card accepted

"Hoctor Built Homes is expanding its landscaping service to the Lower Cape. He responded right away; came to give an estimate as arranged and did the work as promised to our complete satisfaction. I would use Hoctor Built Homes for all of our landscaping needs and tree work."
Response time2 days
Response rate85%
27 neighbors recently requested a quote
Avatar for Paul Foley Electric Co., Inc.
Paul Foley Electric Co., Inc.
4.7(
79
)

Serving Dennis, MA and surrounding areas

Approved

In business since 1992

Free estimates

Emergency services offered

At Premier Energy Solutions, your comfort and safety come first. We protect your home or business with turnkey, worry-free generator installations, HVAC systems, and electrical work — all backed by unmatched reliability and value.\n\nEvery project is handled by licensed professionals using top installation practices. From backup power to heating and cooling to electrical upgrades, we make it seamless, professional, and built to last.\n\nSince 1992, Premier Energy Solutions has grown from a licensed electrical contractor into a full-service power, comfort, and safety provider. We deliver a complete, turnkey experience — design, permitting, installation, testing, and support.\nGenerators. HVAC. Electrical. One trusted team.

13 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Cape Cod Electrical, Inc.
Cape Cod Electrical, Inc.
4.9(
182
)

Serving Dennis, MA and surrounding areas

Approved

In business since 2015

Free estimates

Emergency services offered

"Chris and Colin did a great job cleaning and preparing my mini splits for air-conditioning use in the summer. They worked nonstop and got the job done quickly. Also, they cleaned up after themselves before they left. I always call CAPE COD ELECTRICAL for my electrical needs. "
Ripped down service wire due to storm damage
After repair
After repair
Existing center light
New recessed lighting with pendent over island

+10

Response time2 days
Recommended by81%of homeowners
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Heating and Air Conditioning questions, answered by experts

Yes, you can build a deck over your outdoor HVAC unit, but you need to leave at least 5 feet of vertical clearance above the unit. If you don’t want your deck to be that high off the ground, you could build a floating deck in another part of your yard—again, as long as you leave at least 4 feet of horizontal space between the deck and your AC unit.

There are several AC unit problems to troubleshoot, but luckily you can identify them by keeping a close eye on your system. Look out for the following signs that your AC needs repair:

  • Unusual noises during operation

  • AC unit blows warm air

  • AC unit doesn’t come on or turn off with temperature changes

  • Strange odors come through the vents

  • AC unit cycles on and off rapidly

  • Indoor air is more humid or less comfortable than usual

  • AC unit keeps tripping your breaker

  • Fan in the outdoor compressor doesn’t operate when the AC is on

It is possible to add air conditioning to an older home, but it can be very expensive to do so. Expect to pay anywhere from $6,000 to $17,000 or more for the ductwork and AC unit. You’ll also have to hack into the home’s walls and ceilings to add ductwork, which can impact the aesthetics of an old home.

If your drain line is clogged, your AC might stop cooling, shut down, or refuse to turn on at all. Otherwise, you might see your AC leaking water, find standing water or water damage near the unit, or notice a musty smell coming out of your air conditioner or vents.

ACs don't run on water. They're not connected to drain pipes or any part of your plumbing system. However, they need refrigerant to run. Refrigerant is a gas or liquid that has a low boiling point and absorbs the heat in your home. ACs need this in order to be functional and cool your home. If you suspect your AC is low on refrigerant, you need to contact a licensed HVAC professional. Refrigerant is a dangerous chemical that requires specialized training and permits to work with. 

The Dennis, MA homeowners’ guide to heating and air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.