Serving Norwalk, 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 Norwalk, CT and surrounding areas
Approved
In business since 2002
Free estimates
Emergency services offered
"Everything went great. The crew arrived right on time and was very polite and professional. Ali explained everything beforehand and the work was done exactly as described. After installation there were some minor adjustments to be made and Ali responded right away and took care of the problem. He was also able to get the ducting corrected to a part of the house that hasn't had ac for many years. I was very pleased with Ali and his crew."
+1
Serving Norwalk, CT and surrounding areas
Approved
Super Service Award Winner
In business since 2016
Free estimates
Emergency services offered
"Premier HVAC Services gave us a premium service. Love their workmanship."
+38
Serving Norwalk, CT and surrounding areas
Approved
In business since 1969
Free estimates
Emergency services offered
"I was very happy with my service call today! The repairman, Scott, was knowledgeable and pleasant and wore a mask and gloves throughout., so I felt safe, despite the pandemic. He serviced both of my central air systems and diagnosed the problem with the malfunctioning one and fixed it. By the time he left my house was already a much more pleasant place to be!"
+13
Serving Norwalk, 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 Norwalk, 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 Norwalk, CT and surrounding areas
Approved
In business since 1999
Emergency services offered
Warranties offered
"Advanced Professionals was very prompt in sending someone over to our office to assess the issues with our Air Conditioning unit. It was extremely hot weather and having an office full of doctors and staff was unnerving and frustrating. They were able to accommodate us right away and sent over their technician Rabi. He was very knowable and extremely helpful in resolving the issue. He was able to get us back up and running. He was very thorough and took his time to explain exactly what the issue was and gave recommendations on how to avoid this problem in the future. We are very confident in the service provided and will continue to use Advanced Professionals for any future services needed."
+33
Serving Norwalk, CT and surrounding areas
Approved
In business since 1980
Free estimates
Emergency services offered
"We recently used Bell to replace our central air system in our home. From start to finish the job went smoothly. The initial consultation was done thoroughly and professionally, measuring each room of the house to determine what size units we needed, etc. The price quoted was fair and reasonable. Once we said yes a start date was put on the calendar, when the date came Bell was there as promised and the job was completed faster than initially thought. They were clean, left no mess anywhere, professional, knowledgable and nice. Bell did a great job and i would highly recommend them. I did not grade them on quality because we have not actually used the units yet but I'm sure the units will function perfectly next summer.
"
+4
Serving Norwalk, CT and surrounding areas
Approved
In business since 1976
Free estimates
Emergency services offered
"Great techs & back office service. They know their stuff - assisted with the rebates & got the job done timely & cleanly. New heat pump / AC works great, Thanks all -Steve"
+8
Serving Norwalk, CT and surrounding areas
Approved
In business since 2005
Free estimates
Warranties offered
"Customer service team was very informative on the specials for the day, which help me make my final decision to accept there service. The Air condition tech was very knowledgeable and knew the problem to correct ASAP."
+12
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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