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Find Air conditioning pros in Onset

Avatar for CMA Heating & Air
CMA Heating & Air
4.9(
40
)
Ductless Mini-split A/C - Install or Replace

Serving Onset, MA and surrounding areas

Approved

In business since 2017

Free estimates

Credit card accepted

"We had Chris replace a decades-old gas furnace and electric water heater, as well as install central air conditioning. We talked to a few professionals in HVAC, and Chris seemed to have encyclopedic knowledge of it all. At a very fair price, Chris spent two days having the old stuff professionally removed, getting the new stuff (AC) wired up, and all the new equipment installed. This was a problem-free project from start to finish, and we would strongly recommend Chris to anyone with similar needs."
Response time9 hrs
4 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for Local HVAC
Local HVAC
4.9(
52
)
Ductless Mini-split A/C - Install or Replace

Serving Onset, MA and surrounding areas

Approved

In business since 2018

Free estimates

Customers say: Quick response

"Local HVAC recently installed Central Air in my home in Centerville, MA. They gave me a great price, and provided superior value and excellent service. They were personable, efficient and very professional. I found Matt, Wayne and Dave to be top-notch, they were (are) awesome. They showed tremendous respect for my property and pets while on the premises and were flexible and accommodating with my schedule. I couldnâ t be more pleased with the service I received. I would highly recommend them. I plan on keeping them for any HVAC maintenance and checkup service in the future. Thank you , thank you, thank you to â Local HVACâ ."
new on demand boiler
Response time7 hrs
36 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Majic Air, Inc.
Majic Air, Inc.
4.1(
86
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral Air Cleaner - Install or Replace+1 more

Serving Onset, MA and surrounding areas

Approved

In business since 1983

Free estimates

Warranties offered

"Majic Air did a great job of listening to our desires. We wanted to install central air conditioning in our two story home. We did not want ductless wall units. Shawn, the salesman, was able to come up with a plan that combined traditional ducted AC for the first floor of our home with ductless ceiling cassettes for the second floor of our home, completed with one wall unit for our finished third floor office. We have the air conditioning we wanted and the look we desired. The installers were professional, hard-working, and incredibly neat - leaving us with a tidy home each day. This was a complex job, and Majic Air got it done."
Home Show
Home Show
Home Show
Home Show
Home Show

+23

Response time5 hrs
3 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for RLF Heating & Cooling Inc.
RLF Heating & Cooling Inc.
4.9(
10
)
Central A/C - Service or RepairCentral A/C - InstallDuctless Mini-split A/C - Install or Replace

Serving Onset, 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%
4 neighbors recently requested a quote
Avatar for Cotti Johnson HVAC, Inc.
Cotti Johnson HVAC, Inc.
4.3(
63
)
Central A/C - InstallCentral A/C - Service or Repair

Serving Onset, 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%
92 neighbors recently requested a quote
Bay Point Heating & Cooling
4.9(
7
)
Central A/C - InstallDuctless Mini-split A/C - Install or Replace

Serving Onset, MA and surrounding areas

Approved

In business since 2012

Free estimates

Credit card accepted

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction, from the start to the completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job

Response time3 days
10 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for All Phases Mechanical
All Phases Mechanical
4.6(
233
)
Central A/C - InstallDuctless Mini-split A/C - Install or Replace

Serving Onset, MA and surrounding areas

Approved

Super Service Award Winner

In business since 1982

Free estimates

Emergency services offered

"I had a service program with another co, the company they sent, looked at my air conditioning unit and then said they had to find out what the service program was going to cover. They came back and gave me an estimate that was for replacing the condenser and something else plus refrigerant. Very high price. They said that the service program did not cover anything. At about 2pm through home advisor i got a call from all phases. Within an hour,Henry showed up and by 4pm i had cold air. I was very pleased with the service and the cost. I would refer All Phases to any one in need of air conditioning service."
Back side of units in Balle Meade
Balle Meade,Country Club
Oil to Gas Conversion
Ductless Split System
New AC Coil & Custom Duct Work

+5

Response time6 hrs
27 neighbors recently requested a quote
Recommended by92%of homeowners
Urban Heating and Cooling
4.2(
73
)
Central A/C - InstallDuctless Mini-split A/C - Install or Replace

Serving Onset, MA and surrounding areas

Approved

In business since 2015

Free estimates

Emergency services offered

"So happy I found these guys. They got my furnace running and three days later installed a whole new system and tank covering all three of my aging units (heat, water,a/c). Having just purchased the home, I knew I'd have to get all three things taken care of. This was a dream come true!!!! Personable, knowledgeable, efficient and responsive. Highly recommend them."
Central AC
Boiler to Central Heat/ AC Transformation
Navien On Demand
Ductless Split Install
Response time3 days
1 neighbors recently requested a quote
Recommended by94%of homeowners
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FAQs for air conditioning projects in Onset, 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 Onset, MA homeowners’ guide to air conditioning services

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