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Find Air conditioning pros in Stow

Avatar for NETR Inc
NETR Inc
4.7(
78
)

Serving Stow, MA and surrounding areas

Approved (Corporate)

In business since 1989

Free estimates

Emergency services offered

"

I called Kris U. in a panic because an unethical contractor had totally messed up our very expensive HVAC system, and the condensers had been sitting unconnected for 18 months! Called Sila, they had no idea what to do. Called Kris and he sent in Gregg H. to reconnect everything, drain the condensers and recharge them again. He did a great job and it turned out we did not have to buy new condensers -- hooray!

I highly recommend this company, since no one else was willing or had the inclination to tackle this.

"
SOUTH END CONDO RECEIVES MITSUBISHI DUCTLESS SYSTEM
SOUTH END CONDO RECEIVES MITSUBISHI DUCTLESS SYSTEM
SOUTH END CONDO RECEIVES MITSUBISHI DUCTLESS SYSTEM
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+9

32 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Airco Home Comfort Services LLC
Airco Home Comfort Services LLC
4.7(
33
)

Serving Stow, 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
5 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(
5,397
)

Serving Stow, MA and surrounding areas

Approved (Corporate)

In business since 1989

Free estimates

Emergency services offered

"We are overall very happy with the project. Sila had to install a high velocity air conditioning system in very limited space. They provided a timely quote and showed up and did the work professionally and on time. There were a few hiccups, such as the installation of the hatch to the attic space, but Sila’s carpenter agreed to fix the problem at no additional cost to us, so I consider that to be excellent service. After two weeks, the system has been performing exactly as we hoped."
Additional Photos
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+6

Response time2 days
63 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Emerald HVAC LLC
Emerald HVAC LLC
5.0(
14
)

Serving Stow, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Small jobs welcome

"My central AC unit has been broken for several years. intermittently working during hot summers. I've had several HVAC companies come to diagnose and all of them told me different things: replace the whole system, new lines, etc. potentially costing tens of thousands of dollars. So I decided to troubleshoot by myself and pinpointed the issue: the filter dryer needed to be replaced. No company wanted to do this small job. I called Emerald HVAC and told them about my issue, they sent in José, who diagnosed the issue to be what I said. He replaced the filter dryer and the AC unit works perfectly now after several years! In short, Emerald HVAC will be my first choice for any HVAC work in the future. They are honest, professional, and reasonably priced. I recommend them without reservation!"
Response time1 day
Response rate91%
47 neighbors recently requested a quote
Avatar for SumZero Energy Systems, LLC
SumZero Energy Systems, LLC
4.4(
23
)

Serving Stow, MA and surrounding areas

Approved

In business since 2009

Free estimates

Credit card accepted

"SumZero Energy Systems have been excellent in the last several months with supporting the replacement of my air conditioning system in my old condo as well as servicing my furnace. A price comparison with other local companies also prooved SumZero Energy Systems offered the best price. When I purchased a home a few months later, I called them to take a look at my air conditioning system and furnace because I felt as though they had provided such excellent service in the past. It was a no-brainer to ask for consultation regarding the heating and cooling systems in my new home! When I contacted them for assistance or consultation, they are usually quick to respond and provide appointment times had a very convenient window! They have shown up on time to all of the appointments I have had. David S. has always taken the time to explain everything thoroughly and answer all my questions. I highly recommend SumZero Energy Systems!"
Mitsubishi Heat Pump
MITSUbishi Hyper Heat Heat Pump
Wall Unit (GL Model)
'One-Way' Ceiling Cassette
'Floor Mount' Unit

+9

Response time2 days
Response rate85%
52 neighbors recently requested a quote
Avatar for Conger's Heating & Cooling, Home Heating Oil Delivery & HVAC Services
Conger's Heating & Cooling, Home Heating Oil Delivery & HVAC Services
4.9(
24
)

Serving Stow, MA and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

What good is quality if it is not affordable? At Conger's Heating & Cooling, Inc., we specialize in all your heating and cooling needs. We are committed to \ndelivering Home Heating Oil & HVAC installations at the lowest possible price to every customer in our community. Call today for your current oil price.

 Boiler 1
 Boiler 2
 Boiler 3
 Boiler 4
 Buderus

+10

Response time4 hrs
2 neighbors recently requested a quote
Recommended by73%of homeowners
Avatar for Landry Mechanical, Inc.- HVAC
Landry Mechanical, Inc.- HVAC
4.5(
106
)

Serving Stow, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2008

Emergency services offered

Warranties offered

"Ray and his team replaced both of my 20 year old HVAC units and did a great job. Ray listened to my requirements and proposed HVAC units best suited for the attic and basement. Very happy having the same temperature throughout the house."
Mitsubishi Ductless
Furnace install
Water filtration
Stretching out during a hvac install
New heat pump and furnace

+50

Response time11 hrs
Response rate97%
33 neighbors recently requested a quote
Avatar for Elemental Heating & Cooling
Elemental Heating & Cooling
5.0(
12
)

Serving Stow, MA and surrounding areas

Approved

In business since 2020

Warranties offered

Offers commercial services

At Elemental Heating & Cooling, we're excited to earn your business! Locally owned and operated, we are known in the area for our prompt service and attention to detail. Customer satisfaction is always our primary concern, so be sure to give us a call today!

Mini Split Run Up To Finished Attic
Mini Split Zone
Mini Split Outdoor Unit
Response time6 hrs
1 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Addario, Inc.
Addario, Inc.
3.5(
323
)

Serving Stow, MA and surrounding areas

Approved

In business since 1998

Free estimates

Emergency services offered

"We had central air installed and the Addario Services team did a great job. They were courteous, professional, on time, completed the job in one day and cleaned up the area when they were finished. We highly recommend them and will definitely use them again for other jobs."
Burnham Alpine Boiler and an Indirect water heater
Burnham Alpine boiler and a separate Ondemand wat
2 Rinnai Combi Boilers
Rinnai on-demand water heater
4 Zone Rinnai Combi Boiler

+110

Response time1 day
114 neighbors recently requested a quote
Recommended by71%of homeowners
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Showing 1-10 of 364

FAQs for air conditioning projects in Stow, MA

Most professional HVAC technicians require two to three hours to complete an expansion valve replacement. The timeframe depends on your unit's accessibility and whether additional repairs are needed. The process involves recovering refrigerant, removing the old valve, installing the new component, and recharging the system. Scheduling during less busy seasons may result in more convenient appointment times.

Operating your air conditioner with a malfunctioning expansion valve isn't advisable. Continuing to run the system could potentially damage other components, particularly your compressor, which is significantly more expensive to replace. If you notice performance issues like inconsistent cooling or unusual noises, it's best to have your system inspected before continuing regular use.

Expansion valves don't have a standard replacement schedule, as their longevity depends on system usage, maintenance frequency, and environmental factors. Regular professional maintenance helps identify potential valve issues before they cause system failure. Having your HVAC system serviced annually allows technicians to monitor component condition and recommend preventative replacements when necessary.

Refrigerant leaks require prompt professional attention. If your expansion valve is leaking, you'll likely notice reduced cooling performance and possibly hear hissing sounds near the unit. Addressing leaks quickly prevents further system inefficiency and avoids the environmental impact of released refrigerant. Your HVAC technician will need to repair the leak and recharge the system with the proper refrigerant type and amount.

Because many AC issues present similar symptoms, professional diagnosis is recommended. Problems like inadequate cooling, inconsistent temperatures, or strange noises could indicate expansion valve issues, but might also stem from refrigerant leaks, electrical problems, or airflow restrictions. A qualified HVAC technician has the tools and expertise to accurately identify the root cause and recommend appropriate repairs.

The Stow, MA homeowners’ guide to air conditioning services

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