
Serving Columbia, CT and surrounding areas
Approved
In business since 1945
Free estimates
Emergency services offered
"Correctly diagnosed and fixed a problem that other HVAC comps you couldn’t find."






Serving Columbia, CT and surrounding areas
Approved
In business since 1945
Free estimates
Emergency services offered
"Correctly diagnosed and fixed a problem that other HVAC comps you couldn’t find."




Serving Columbia, CT and surrounding areas
Approved
In business since 2004
Free estimates
Customers say: Quality work
"Paul is a highly skilled professional who works on central air condition as well as furnaces. We have used Paul for a few years now for both A/C and furnace inspections and repairs. He is the best!!! Contacts you and follows up timely. Very professional. Reasonably priced and efficient."

Serving Columbia, CT and surrounding areas
Approved
In business since 2018
Free estimates
Emergency services offered
"Technician troubleshot the problem, went downtown to obtain a needed component, returned and completed the job in a matter of hours. No BS, fluff or buff!"

Serving Columbia, CT and surrounding areas
Approved
In business since 2007
Free estimates
Warranties offered
"I can't say enough good things about Brian, who took care of this work for me. He returned my call promptly, listened carefully to what I needed, and was able to go out to my house within a few days to look at the space available for the two needed light fixtures. He then gave me excellent advice on the type of fixtures that would fit, and the exact sizees I needed to order, as well as what locations would work best for connecting them to the existing wiring. Using his advice, I was able to order the fixtures, which he then came out again to install. He obviously has good skills, but he was also prompt, efficient, honest, and very professional. I will not hesitate to contact him again when I need any further work done -- thanks Brian!"



Serving Columbia, CT and surrounding areas
Approved
In business since 2018
Free estimates
Emergency services offered
"Excellent service! Highly recommend! David was prompt and very professional. We had damage to our gutters from strong wind gusts. David sent a handy man the same day we called, they repaired the damage quickly, and it was excellent work! Highly reliable!"





+1798

Serving Columbia, CT and surrounding areas
Approved
In business since 2008
Free estimates
Emergency services offered
"My AC was not working Precise came out and fixed the problem . I was very pleased with the service and professionalism. I will be using for all my maintenance and repair needs."





+22

Serving Columbia, CT and surrounding areas
Approved
In business since 1989
Free estimates
Emergency services offered
"Friendly, professional and knowledgeable. Provided prompt and reliable service, installing new furnace, ac condenser and thermostat."





+29

Serving Columbia, CT and surrounding areas
Approved
In business since 2001
Free estimates
Warranties offered
"The customer response is exceptional. The installation of my heat exchanger was done in a timely, professional way. I am very happy."

Serving Columbia, CT and surrounding areas
Approved
Super Service Award Winner
In business since 2000
Free estimates
Emergency services offered
"Prompt response, appointment and service! Showed up on time and was polite and professional. Quality work and cleaned up the work area after the repair! A++"





+232
Serving Columbia, CT and surrounding areas
Approved
In business since 2009
Free estimates
Warranties offered
NEFTCO Mechanical Heating and Cooling is committed to excellence every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and responsibility in all of our jobs. We are a locally owned and operated business with more than 15 years of experience serving Connecticut and surrounding areas. There is no job too big, or too small for our team. Call today and let us put our experience to work for you!





+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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