Serving Hamden, 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 Hamden, CT and surrounding areas
Approved
In business since 2018
Free estimates
Small jobs welcome
"Onafreo did a great job and I couldn t be happier with the installation of my central air system. I highly recommend them!"
+27
Serving Hamden, CT and surrounding areas
Approved
In business since 2008
Free estimates
Emergency services offered
"I had Michael LeBlanc come over to see if my water heater was serviceable. Unfortunately, it had to be replaced. I was very happy with the quick response time and him scheduling in the replacement service right away. I now have hot water again, and recommend MTL based on this experience."
+4
Serving Hamden, CT and surrounding areas
Approved
In business since 1945
Free estimates
Emergency services offered
"Outstanding example of what an Angie's List "super service" provider should be like. I chose this company on the basis of the "super service" designation, and I wasn't disappointed. These folks (1) return phone calls, (2) show up on time, (3) have reasonable prices, (4) demonstrate competency, and, (5) accommodate customers' schedules. This is not to mention the fact that they're pleasant and friendly. Carlos, the service tech that worked on my AC, couldn't have been nicer. Thank you Mull Brothers, and thank you Angie's List."
Serving Hamden, CT and surrounding areas
Approved
Super Service Award Winner
In business since 2008
Free estimates
Emergency services offered
"Precise HVAC was wonderful. I actually was going to get more quotes but after working with their salesperson I decided to not even bother. They answered all my questions and made suggestions for things I didn't know about. I'm not even sure I care if I got a better quote or not. With Precise I know that they cross the t's and dotted the eyes and I don't have to worry about missing something."
+22
Serving Hamden, 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 Hamden, 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 Hamden, CT and surrounding areas
Approved
In business since 1952
Free estimates
Credit card accepted
We are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. \nOur distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.
Serving Hamden, CT and surrounding areas
Approved
In business since 1995
Free estimates
Emergency services offered
"Had a great experience with the 2 guys that came. One looked after the air conditioning system and the other the furnace and thermostat. found them to be knowledgeable, personably, and professional in there dealings."
+22
Serving Hamden, CT and surrounding areas
Approved
In business since 2017
Free estimates
Credit card accepted
"If you are looking for a professional punctual and courteous individual for all your A\C and heating needs, use this company. The best service and attention to detail will be provided. My central air was not cooling, they came out on multiple occasions to troubleshoot the issue and provided us with the best options suited for our needs. Because of this great service, it was only fitting to use them to replace the unit. Go with this company you will not be disappointed."
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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