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Avatar for NETR Inc
NETR Inc
4.7(
78
)

Serving Medfield, MA and surrounding areas

Approved (Corporate)

In business since 1989

Free estimates

Emergency services offered

"Two men, Jerry and Tommy, arrived on the morning of May 19, 2017 to install the system. Tommy dug a hole on one side of the house, poured a concrete foundation in said hole, and also set up metal tubing, which created a stand on which the condenser sits to protect it from runoff. Meanwhile, Jerry was inside, drilling holes through my bedroom and dining room interior and then exterior walls for the refrigerant pipes which run from the condenser to the air handlers. He mounted each air handler high up on the wall. There was also electrical work performed to connect the units to the main panel in the basement. The whole job took several hours. Both men worked quickly and efficiently. At the close of it, Jerry presented me with my remotes and instructions, and showed me the basics. I used the system for the first time just a couple of nights after installation. The first night (it was the start of a heat wave) the air from the system was cool-ish - tolerable, but not quite as comfortable as I'd hoped - but I was still uncertain about the controls so I didn't tab down the temperature. The second night I did tab down the temperature, and that's when I found out that, though the fans and vanes in both air handlers worked, the cooling mechanisms did not. Considering the amount of money I'd just spent i was more than a little upset. Visions of law suits danced in my overheated head that night. I called the next morning. Jerry came out that day and diagnosed the problem (something to do with the solenoids, or maybe it was the thermistors). In any case, he did fix it, and this time, it worked as designed, and has done so ever since. I should add that NETR offers a service contract. Despite the added expense - for me, 234.99 a year for 3 years (the annual rate is fixed for that period, plus I get a 5% discount) - it makes total sense to have this complex system undergo periodic maintenance. I will pay the total at the time of the first inspection, in 2018."
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

24 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Sila Heating, Cooling, Plumbing and Electrical
Sila Heating, Cooling, Plumbing and Electrical
4.5(
5,398
)

Serving Medfield, 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."
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+6

63 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for SumZero Energy Systems, LLC
SumZero Energy Systems, LLC
4.4(
23
)

Serving Medfield, 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 rate87%
54 neighbors recently requested a quote
Avatar for Pro Heating & Cooling
Pro Heating & Cooling
4.9(
25
)

Serving Medfield, MA and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"We chose Pro Heating & Cooling to do an oil to High Efficiency gas boiler conversion. Sean provided a clear and concise quote for the the full job, including a challenging removal of our oil tank. We needed the job done ASAP and Sean was able to accommodate our request and complete the full job in a day. His crews were prompt, and seamlessly coordinated to convert our combo forced hot water and air system while creating a much tidier and well laid out integration with the new boiler and indirect water heater. After the instillation Sean checked in and came to do minor adjustments to ensure the system was dialed in to run perfectly. Lastly, the pricing was great, and the instillation was designed to maximize the available Mass Save rebates for energy efficient systems. I'd recommend Pro Heating without hesitation (as I did to a friend/neighbor)!"
Oil Boiler Replacement
Single zone DMS
Single zone DMS
Two  Tankless Water Heaters
Response time2 days
3 neighbors recently requested a quote
Recommended by82%of homeowners
Avatar for G&C Plumbing and Heating, LLC
G&C Plumbing and Heating, LLC
5.0(
91
)

Serving Medfield, MA and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 2005

Small jobs welcome

Credit card accepted

"In the heat of the summer, our air conditioning shut down. I was worried that I was going to have to spend several thousand dollars to replace it. G & C came out to diagnose the issue and had it solved within an hour. They educated me about Maintainence so that this doesn’t happen again. Very happy with the service and professionalism. I will definitely be using them again!"
Burnham X2 Boiler
Water Heater Upgrade
Water Heater Upgrade
Water Heater Upgrade
Water Heater Upgrade

+15

Avatar for Venture Mechanical
Venture Mechanical
5.0(
18
)

Serving Medfield, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Free estimates

Emergency services offered

"Dylan was amazing. My hvac person retired & I found Dylan when my Central air decided to act up. He explained my unit was in approaching its last days but he could attempt to repair it if I wished but I decided it was time to do a complete new heating & cooling system & he made it a easy process. No pressure & no stress. Now we’re ready for the heat wave that’s apon on us. Thank you Dylan & your team for your professionalism & great service. I highly recommend & they’re my go to for plumbing as well as I’m about to have them replace my hot water tank before it becomes an issue"
Steam Boiler Install
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+27

16 neighbors recently requested a quote
Recommended by72%of homeowners
Avatar for Green Energy Mechanical
Green Energy Mechanical
4.3(
96
)

Serving Medfield, MA and surrounding areas

Approved

In business since 2007

Emergency services offered

Warranties offered

"We got quotes from 2 other companies for installing a mini-split AC/HeatPump. Green Energy was the least expensive, but we also hired them because they seemed to know a lot about mini-splits. The install was done very professionally, and the mini-split worked even better than we expected. We just had a one year service, which was also done on time and professionally."
 Before
 Space for condenser outside
 After
Traditional Dining Room - Tan Cozy Dark Wood Dining Chairs
 old steam boiler

+17

58 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for H L Bowman
H L Bowman
4.7(
409
)

Serving Medfield, MA and surrounding areas

Approved (Corporate)

In business since 1946

Free estimates

Emergency services offered

"H L Bowman is by far one of the best service companies that I have dealt with. I got a call that the technician was on the way to my house. George showed up and got right to work. Found my problem and explained to me the best way to fix my issue. They did not try to sell me on any pricier fixes. George showed me what he could offer and explained what would be my best option. He was knowledgeable, informative, and explained everything so that I would understand what was going on. I am definitely going to be using them for all my heating and air conditioning needs. Top notch company. Would recommend to anyone needing this kind of help."
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+6

1035 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Landry Mechanical, Inc.- HVAC
Landry Mechanical, Inc.- HVAC
4.5(
107
)

Serving Medfield, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2008

Emergency services offered

Warranties offered

"Our central air unit died during the hottest days of the year so far. It is a new unit . We called a few places desperate for service and were told it would be a few weeks for most companies to make it out. Called Landrys after finding them on google. A woman called me back less than 20 minutes after first phone call and said they would be out today. Tyler came and was great. Fixed our unit and saved our life! We will be using them in the future for sure. 5 stars for service and their customer service is without a doubt 5 stars as well."
Mitsubishi Ductless
Furnace install
Water filtration
Stretching out during a hvac install
New heat pump and furnace

+50

Response time11 hrs
Response rate97%
52 neighbors recently requested a quote
Avatar for ENDLESS ENERGY NEW ENGLAND, INC.
ENDLESS ENERGY NEW ENGLAND, INC.
4.7(
20
)

Serving Medfield, MA and surrounding areas

Approved

In business since 1980

Free estimates

Emergency services offered

Endless Energy is a trusted local HVAC and Plumbing Company servicing the majority of the state of Massachusetts with office in Marlborough, Needham, and Randolph. Specializing in Heat Pumps, Central AC, Furnaces, and Boilers, we have Master Plumbers, Electricians, and HVAC Technicians all under one roof reducing your need to find multiple contractors! We are also a Mass Save partner and can conduct your no cost Mass Save Home Energy Assessment and install any recommended insulation.\n\nWe can help you with: \n*Heating Repairs, Installation, & Service\n*AC Repairs, Installation, & Service\n*Plumbing Repairs, Installation & Service\n*Water Heater Replacement & Service\n*Indoor Air Quality Solutions\n*Ductwork & Line Set Solutions\n*Electrical Panel Upgrades and Replacement\n*Insulation \n*No Cost Home Energy Assessments\n\nA Mass Save certified contractor with an A+BBB rating. All of our skilled technicians undergo an extensive background and drug screening prior to being hired to our team!

Holliston Heat Pump
Boston Heat Pump
Natick Ducted System
84 neighbors recently requested a quote
Recommended by70%of homeowners
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Showing 1-10 of 398

FAQs for air conditioning projects in Medfield, 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 Medfield, MA homeowners’ guide to air conditioning services

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