Serving Darien, 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 Darien, CT and surrounding areas
Approved
In business since 2013
Free estimates
Emergency services offered
"Excellent customer service. Very knowledgeable, prompt, and top notch. Explained everything about the tankless water heater. Have hired Mike to install new central air conditioning ."
Serving Darien, CT and surrounding areas
Approved (Corporate)
In business since 1946
Free estimates
Emergency services offered
"Went very well. Tech gave great information on the condition of my unit. As well as provided guidance for upcoming repairs that may be needed."
+6
Serving Darien, CT and surrounding areas
Approved (Corporate)
In business since 1903
Emergency services offered
Warranties offered
"There was a snag at the beginning when they realized, after beginning to dig, that the AC unit was on top of the oil tank and they'd have to call someone in to move it before digging could continue. That delayed things a few days, but thereafter they did a good job of digging and were very careful with our trees. They also took care not to ruin the lawn with the machinery. The new tank and heater were quickly put in the basement with no problems."
Serving Darien, CT and surrounding areas
Approved
In business since 2022
Free estimates
Credit card accepted
"We received excellent service from Kelleyâ s Heating & Cooling when our air handler was preventing our heat from coming on. Ryan was prompt, friendly, knowledgeable, and reassuring. He assessed and repaired the system in a short amount of timeâ we highly recommend Kelleyâ s Heating and Cooling. Top-notch service."
Serving Darien, CT and surrounding areas
Approved
In business since 1976
Free estimates
Emergency services offered
"Installed heat pump, thorough, professional, affordable, knowledgeable and did all the paper work with rebates, etc. I called several other companies and they were by far the best in every way."
+8
Serving Darien, CT and surrounding areas
Approved
In business since 1938
Free estimates
Emergency services offered
"They were great! Even found a way of adding a 40 gallon water heater to a smaller space. Which has been wonderful! They worked in a VERY tight space and got the job done! I highly recommend them! Will be using them to install my central air as well!"
+1
Serving Darien, CT and surrounding areas
Approved
Super Service Award Winner
In business since 1992
Emergency services offered
Warranties offered
"THE PRICE WAS A LITTLE TOO HIGH. IT WAS AN EMERGENCY CALL, BUT THE PRICE WAS TOO HIGH. HE REPLACED A SIX INCH WATER HEATER PIPE. THERE HAS BEEN NO PROBLEMS."
+3
Serving Darien, CT and surrounding areas
Approved
In business since 1922
Free estimates
Emergency services offered
"Randy from Schede worked on the ductwork Installation and was very professional and knowledgeable; he explained everything he was doing in a way that I could understand. I would definitely recommend Schede to anyone who HVAC services!"
Serving Darien, CT and surrounding areas
Approved
In business since 1986
Free estimates
Emergency services offered
"Pelham Heating & Air Conditioning is a high quality high service company. They have service my unit 1996. I have always found them to professional and reliable."
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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