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Find Air conditioning pros in Stow

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+11 more

Serving Stow, MA and surrounding areas

Approved

In business since 1998

Free estimates

Warranties offered

"Airco is a great family-owned and operated business, very fair and knowledgeable. They replaced our forced air central heating system (oil) in a day, and were quick to respond and get to work despite how busy things were during the January cold-spell. I would highly recommend for your heating and cooling needs!"
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+4

Response time2 days
1 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for SumZero Energy Systems, LLC
SumZero Energy Systems, LLC
4.4(
23
)
Central A/C - InstallDuctless Mini-split A/C - Install or Replace

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 rate88%
18 neighbors recently requested a quote
Avatar for Rodenhiser Home Services
Rodenhiser Home Services
4.4(
522
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+12 more

Serving Stow, MA and surrounding areas

Approved

In business since 1928

Emergency services offered

Warranties offered

"Everything went well. Rodenhiser handled all aspects including obtaining an interest-free 7-year loan, installation of heat pump/air handler, coordination with town inspections, and submission of rebate claim. I would recommend them highly for this type of project."
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39 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Metro West Mini Splits
Metro West Mini Splits
4.9(
16
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace

Serving Stow, MA and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

"I am writing to recommend the excellent work of Metrowest Minisplits based on our recent experience with the install of 4 minisplits and outdoor heat pump system. Our house is heated with oil and I wanted an alternative clean heating source and could not be happier with this added system to our home. No more noisy window AC Units. These minisplits are so quiet as well as the outdoor unit. Jamie and Allan walked through our home measuring each room, wall to wall, ceiling to floor, providing location and unit size recommendations and did not over sell. They took the time to review the outside of our house and listened to my concerns for placement of outdoor duct work and unit location. I wanted to use a local contractor who would also be installing the product and would not use a third party contractor. Jamie took the time to come back after they where finished installing units when everyone was home to show us together how to use the remotes, how to clean filters, adjusting air flow and explain the proper use of the system. Thatâ s why I would recommend Metrowest Minisplits. Great customer service! The Brazeau, Southborough, MA"
Heat Pump Repair
Mini Split Heat Pump - Fujitsu Brand
Response time2 days
Response rate98%
1 neighbors recently requested a quote
Avatar for Milltown Plumbing, Heating, Cooling and Electrical - HVAC
Milltown Plumbing, Heating, Cooling and Electrical - HVAC
4.3(
424
)
Central A/C - InstallCentral A/C - Service or RepairCentral Air Cleaner - Install or Replace+4 more

Serving Stow, MA and surrounding areas

Approved

In business since 1979

Warranties offered

Small jobs welcome

"First, it was refreshing to have someone come into my home that was both professional, courteous, and obviously enjoyed their work! Jay is awesome. I had him at my home in August for air-conditioning repair; then again in September for a furnace issue. Both were quickly diagnosed and Jay left with my system operating. I definitely would recommend Jay and MillTown."
The Milltown Team
Family Owned and Operated
We're Ready When You Need Us
Our Mission
Team Photos

+13

Response time9 hrs
Recommended by89%of homeowners
Avatar for Milltown Plumbing, Heating, AC, Drain Cleaning & Electrical
Milltown Plumbing, Heating, AC, Drain Cleaning & Electrical
4.4(
200
)
Central A/C - InstallCentral A/C - Service or RepairCentral Air Cleaner - Install or Replace+4 more

Serving Stow, MA and surrounding areas

Approved

In business since 1979

Credit card accepted

Customers say: Super punctual

"My whole experience in dealing with Milltown was nothing but pleasurable. Their office staff are so professional and courteous. They were very accommodating to my scheduling needs, and even called a half hour before their actual arrival. My air conditioning unit is a bit old and it needed more than just a tune-up unfortunately. The servicer was very helpful in letting me know exactly what was wrong and how I he could fixed it and keep the cost down. He also showed me things about the air conditioning unit that I could do on my own to keep it running efficiently. I was very happy with everything Milltown Plumbing did for me and I would highly recommend there services."
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10 neighbors recently requested a quote
Recommended by87%of homeowners
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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.