Serving North Dartmouth, 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 North Dartmouth, 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 North Dartmouth, MA and surrounding areas
Approved
In business since 2015
Free estimates
Customers say: Quality work
"Excellent customer service skills exhibited by the entire team at Family Heating and Air Conditioning. Everybody showed up on time, there was great coordination between support contractors and material delivery. They installed a ducted AC system in our home with minimal inconvenience to us. They are a professional team I wouldn't hesitate to recommend to my family of friends."
+21
Serving North Dartmouth, MA and surrounding areas
Approved
Super Service Award Winner
In business since 2022
Free estimates
Emergency services offered
"Dylan is very reliable and knowledgeable. He has provided plumbing services many times for us and I wouldn't use anyone but him. The service is exceptional and pricing is extremely fair. I highly recommend Venture Mechanical for any plumbing, heating, or air conditioning needs that you may have."
+27
Serving North Dartmouth, MA and surrounding areas
Approved
In business since 2018
Free estimates
Emergency services offered
"My on demand heating system wasnt running efficiently so I called the company and they had someone at my home very quickly. Come out inspected my system and gave me alot of information on how it worked and what needed to be done. Very satisfied with the work. Definitely will recommend them to anyone looking for fast and friendly service"
+15
Serving North Dartmouth, MA and surrounding areas
Approved
Super Service Award Winner
In business since 2001
Emergency services offered
Customers say: Quick response
"I called BK and I sent Bernard my information via text. He came the next day prepared with my part. Replaced my pump in my 20 plus year-old washer. He was very knowledgeable and friendly. Got the job done!! Glad to have a local person for appliance repairs."
Serving North Dartmouth, 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 North Dartmouth, 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 North Dartmouth, MA and surrounding areas
Approved
In business since 2013
Free estimates
Emergency services offered
"I found J&M heating and cooling through Angiâ s list online. I had been a couple of days without AC and within 15 minutes of my entry online they were calling and then they were out to my address to check the problem within 2 hours. They were very prompt, efficient and professional. I would definitely call them again."
Serving North Dartmouth, MA and surrounding areas
Approved (Corporate)
In business since 1984
Free estimates
Emergency services offered
"Quick and efficient work done by Angel Ortiz. He explained the issue and all the work that needed to be done. Definitely recommend ARS for all your heating & air conditioning needs."
+10
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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