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Best air conditioning pros near Waltham, MA

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Top-Rated Air conditioning pros in Waltham - Updated Nov 2026

Avatar for Airco Home Comfort Services LLC
Airco Home Comfort Services LLC
4.7(
33
)
Central A/C - Install - For BusinessCentral A/C - Service or RepairCentral A/C - Service or Repair - For Business+2 more

Serving Waltham, MA and surrounding areas

Approved

In business since 1998

Free estimates

Warranties offered

"I whole heartedly recommend Airco. Their team was experienced, skillful, friendly and professional throughout the duration of this job, from Joe's first visit to my home to discuss air conditioning options to Derek and Cam's final touches on the duct system. I had complete confidence in them, as well as in Steve, Danny, Frank and Patrick. Additionally, Airco's connections to MassSave and Commerce Bank meant financing and payment options to suit my budget. No more hauling loud and heavy window a.c. units up from the basement. Instead, I am enjoying consistent cooling throughout my home with no noise whatsoever. I am a very happy customer!"
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+4

Response time2 days
1 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Sila Heating, Cooling, Plumbing and Electrical
Sila Heating, Cooling, Plumbing and Electrical
4.5(
5,404
)
Central A/C - InstallDuctless Mini-split A/C - Install or ReplaceCentral A/C - Install - For Business+3 more

Serving Waltham, MA and surrounding areas

Approved

In business since 1989

Free estimates

Emergency services offered

Live Your Most Comfortable Life with a Company You Trust. \nWe offer Same Day Service and Next Day Installation! \n \nSila has been the center of delighting homeowners since 1989, with our team of engineers, certified technicians, and system designers that are proud to deliver the highest level of expertise in the HVAC industry. Whether it?s a repair, replacement, installation, or service, we have an unwavering commitment to keeping you and your family comfortable and safe ? season after season. \nWe guarantee satisfaction and are proud to have earned over 7,000 ?A? ratings on Angie?s List and its prestigious Super Service Award!

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+6

67 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Ace Hardware Home Services
Ace Hardware Home Services
4.5(
53
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+3 more

Serving Waltham, MA and surrounding areas

Approved (Corporate)

In business since 1967

Free estimates

Emergency services offered

"Diagnosis and repair were straightforward and the talented Mike, who has done other great work for us on our ACs, had a replacement pump in his truck. Swapped over in under an hour. Cost of the repair was quite high, mainly due to very high price they charged for the pump. A Taco pump that I could buy for $175 was priced on this repair at more than $500. I get that it was an urgent situation and I’m happy to pay reasonably for the response but that mark-up bothered me. I called the office, had a long talk with the owner; sadly, she offered no consideration at all. Yes, it’s hard to find and keep skilled techs, but now seems that most HVAC firms have a business model like a car dealer’s service dept, far more corporate, less flexible or customer-considerate."
Heat Pump
Mitsubishi Hyper Heat
Multiple Ductless Heat Pump Installation
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+6

Response time1 day
Response rate100%
4 neighbors recently requested a quote
Avatar for Druziako HVAC Inc
Druziako HVAC Inc
4.7(
157
)
Central A/C - InstallDuctless Mini-split A/C - Install or Replace

Serving Waltham, MA and surrounding areas

Approved

In business since 1990

Free estimates

Emergency services offered

"I have a two-story single family house. Last year, Druziako HVAC replaced my first floor AC with a Carrier heat pump. I quoted 5 companies, and Druziako was honest and gave me best pricing. The heat pump worked great in summer and winter. This year I hired them again to replace my 2nd floor AC. The whole team are friendly, helpful, and very patient. Installation went smoothly and quickly. I cannot be happier with the pricing and quality of the work. I will recommend them without any doubt. Thank you very much!"
Aprilaire Dehumidifier
Attic Air Handler
Duct Cleaning before and After
Attic Ductwork
Aprilaire Humidifier

+3

Response time11 hrs
14 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Atlantic Heating & Air Conditioning
Atlantic Heating & Air Conditioning
4.1(
153
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+3 more

Serving Waltham, MA and surrounding areas

Approved

In business since 1962

Free estimates

Emergency services offered

"We've used Atlantic Heating & AC for many years and wouldn't consider any other company. Atlantic is extremely responsive, priced reasonably, and they always do a great job. We've never once had to call them back to resolve any issues associated with their work, and they've done a lot of work over for us over the last 9 years. Recently, our water heater died very suddenly; I came home from my office and water was leaking out of the water heater onto the basement floor. Within minutes, their service manager was guiding me over the phone regarding which valves to turn off etc. and he had me take a few pics to send to him. The very next day, a serviceman was at our house installing a brand new, much better water heater than the house had come with, and we haven't had an issue yet, and this was several months ago. I'm a Realtor and Atlantic has bailed my seller clients out of HVAC issues on a moment's notice, so I will always be grateful for the excellent sales and service that we receive thanks to Atlantic Heating and AC."
Response time3 days
Response rate100%
2 neighbors recently requested a quote
Avatar for Peter Paone HVAC
Peter Paone HVAC
4.9(
24
)
Ductless Mini-split A/C - Install or ReplaceCentral A/C - Service or Repair

Serving Waltham, MA and surrounding areas

Approved

In business since 2019

Free estimates

Small jobs welcome

"I had a cleaning of HVAC system and also got one additional vent installed. They showed up on time and finished the work timely. They also listened to my questions and answered all of them to my satisfaction."
hvac
Ductwork
air conditioning
Mechanical
hvac

+1

Response time12 hrs
Response rate90%
1 neighbors recently requested a quote
Avatar for Everclean Air LLC
Everclean Air LLC
4.8(
44
)
Air Ducts & Vents - Clean

Serving Waltham, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Emergency services offered

"This was one of the best service experiences I've had. Gabriel was excellent. He was polite, respectful of my home, explained the service thoroughly and answered all my questions. A pleasurable experience from start to finish. Highly recommend. Will be sure to tell friends and family about this service for their air system needs. Thank you!"
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+2

Response time7 hrs
Response rate100%
6 neighbors recently requested a quote
Avatar for Duct Kings
Duct Kings
4.7(
410
)
Air Ducts & Vents - Clean

Serving Waltham, MA and surrounding areas

Approved

Super Service Award Winner

In business since 1999

Free estimates

Emergency services offered

"Perfect! The technician arrived on time. He was very efficient, courteous and professional. I showed him where the dryer and outside vent were and went back to work in my home office. Shortly later he told me it was finished. He had done the following: - Showed me pictures and videos of the work that he had performed - Of particular interest was the 'before-and-after" picture of the inside of the dryer duct, which had been clogged with lint - He cleaned out the dryer inside-filter - He swept and vacuumed the area between the dryer and the wall - He put a screw in the dryer vent hose that had been missing - He installed the outside bird-guard that had fallen on the deck months ago I would like to use Duct Kings again to clean out my home AC ducting."
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Response time2 days
Response rate100%
16 neighbors recently requested a quote
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Air Conditioning FAQs, answered by experts

If you’re trying to buy a new AC unit, there are a few crucial factors to consider. Look at the cooling capacity, the available warranty, the energy efficiency, and the type of unit. A ductless unit will cost more up front but may be a more viable option if you don’t already have ductwork. Additionally, a unit with better energy efficiency will cost less to run overall, saving you money on your monthly energy bill. 

There are several steps you can take to prevent your AC drain from clogging. This includes cleaning the drain line at least every three months, changing the filter every one to three months, and getting your AC serviced annually. Also, if any problems arise with your AC, hire an HVAC technician to deal with them ASAP.

Florida rooms can have heat or air conditioning, although not all do. These rooms can be added to the existing HVAC system or use a mini-split system, or they may just use a ceiling fan or the breeze from the windows for cooling. Florida rooms with air conditioning often have glass windows to keep the cool inside instead of just mesh screens.

High humidity, bad insulation, warmth from sunlight, and poor circulation are all reasons your home’s hotter inside than out. While this is what you want in the colder months, summer can become unbearable if this is a constant. Try to find the cause, but you need to remember that issues like this require a permanent fix (unless you want to bear down during the summer months).

There are two main reasons your furnace and AC are turning on at the same time. The first could be that you’re confusing the furnace with the blower. The blower is located in the furnace and will turn on to distribute cool air from the air conditioner through the ductwork in the home. This is normal. If the actual furnace is turning on at the same time as the AC and hot and cool air are coming into the home, it could be a result of incorrect writing to a new thermostat or new systems.

The Waltham, MA homeowners’ guide to air conditioning services

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