Serving Onset, MA and surrounding areas
Approved
In business since 1999
Free estimates
Customers say: Quick response
"Rick responded quickly and had my air conditioning working efficiently in no time. Good professional service!"

Serving Onset, MA and surrounding areas
Approved
In business since 1999
Free estimates
Customers say: Quick response
"Rick responded quickly and had my air conditioning working efficiently in no time. Good professional service!"

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."

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 ."


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."





+23

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."

Serving Onset, MA and surrounding areas
Approved
Super Service Award Winner
In business since 2001
Emergency services offered
Customers say: Quick response
"The AC maintenance was comprehensive, as it was never done ferore."

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."





+56
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

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."





+5
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."




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

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