Serving New Canaan, CT and surrounding areas
Approved
In business since 1994
Free estimates
Emergency services offered
"Very good got the American standard 16 seer. Inside variable speed air handler. Just what we wanted."
+172
Serving New Canaan, CT and surrounding areas
Approved
In business since 2002
Free estimates
Emergency services offered
"They responded to my home quickly and professionally. The technician was very knowledgeable and candid and saved me unnecessary expenses. They fixed the issue and has our ac back up and running within an hour and made sure everything was clean before they left. Will definitely recommend them."
+1
Serving New Canaan, CT and surrounding areas
Approved
Super Service Award Winner
In business since 2016
Free estimates
Emergency services offered
"Affordable HVAC repair service. You can actually ask them to do little extras at no additional cost. After I called them for emergency repair of our AC unit, they offered a complementary cleaning for the unit. Amazing customer appreciation. Totally recommended!"
+38
Serving New Canaan, CT and surrounding areas
Approved (Corporate)
In business since 1989
Free estimates
Emergency services offered
"I was able to get a same-day appointment, and Abraham showed up right on time. He took a look at the system and confirmed that the furnace was running as expected, and he didn’t find evidence of a cracked heat exchanger. I was hoping for a definitive answer as to why the air wasn’t flowing out of several of my vents, but he was only able to confirm that it wasn’t due to the furnace itself. I may have clogged or separated ductwork behind the walls, but he wasn’t able to diagnose/confirm. At least I know the furnace itself isn’t the source."
+20
Serving New Canaan, CT and surrounding areas
Approved
In business since 2013
Free estimates
Emergency services offered
"During the hottest week in several years, THEY SAVED OUR BACON by 1) responding, 2) promising and 3) delivering. Specifically, they showed up on Tuesday, installed the new compressor on Wednesday, removed the defective valve in the attic (not an easy job with our outdated ductwork) on Thursday and installed the OVERNIGHTED special order replacement valve on Friday. New system works great. FYI, other numbers we called during the emergency said, "two weeks at the earliest.""
Serving New Canaan, CT 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."
+6
Serving New Canaan, CT and surrounding areas
Approved
In business since 2007
Free estimates
Emergency services offered
"Very knowledgeable and professional. When speaking to RIcardo I could tell he knows his field. He is effect, efficient, knowledgeable, professional and honest. He doesn’t tell you this is your only option. He gives you options to solve your issues and lets you know this is a short term solutions or this is the long term solution. He honest with what you can do with your budget if your on a budget. We have used Protech heating & Air Conditioning for some major work in the past, and they have always added value and responded very professionally."
+4
Serving New Canaan, CT and surrounding areas
Approved (Corporate)
In business since 1903
Emergency services offered
Warranties offered
"I AM BUYING A HEATER SERVICE CONTRACT FROM PETRO THIS YEAR."
Serving New Canaan, CT and surrounding areas
Approved
In business since 2022
Free estimates
Credit card accepted
"I had a great experience with Ryan’s team, my AC handler got replaced and my home is now comfortable."
Serving New Canaan, CT and surrounding areas
Approved
In business since 1999
Emergency services offered
Warranties offered
"They were very responsive and gave 3 hour window during a busy Saturday that was extremely cold. They called before coming and were timely. Found what was wrong and fixed the relief valve, expansion tank and found additional problems such as faulty water feeder. Tested and flushed entire system to remove air and ensure working properly."
+33
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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