Serving Lincoln, CA and surrounding areas
Approved
In business since 1982
Free estimates
Warranties offered
"They did a great job, and they were able to fix the problem on our air conditioning."
Serving Lincoln, CA and surrounding areas
Approved
In business since 2015
Free estimates
Emergency services offered
"Best HVAC company I've had to deal with for a long time. very professional, courteous, goes beyond the job to get a repair or install done right and timely. they're also the best bargain and use superior equipment compared to other companies. from the moment I contacted them to the last details of the job they shine high above other irresponsible companies out there. I highly recommend them."
Serving Lincoln, CA and surrounding areas
Approved
In business since 2014
Free estimates
Emergency services offered
"Mark came out the day after I submitted an online request for an appointment. He was punctual and professional and explained everything he was doing. He had the part he needed in his truck, and he had my furnace up and running in no time. While he was here, he took a look at my air conditioner and informed me that it looked fine and was ready for the summer. These guys are honest and professional -- I was very happy with my experience."
+13
Serving Lincoln, CA and surrounding areas
Approved
Super Service Award Winner
In business since 1992
Free estimates
Emergency services offered
"Nice people, Glenn & Jose very efficient and got my air going quickly."
+5
Serving Lincoln, CA and surrounding areas
Approved
Super Service Award Winner
In business since 1981
Free estimates
Emergency services offered
"Keep me informed of his scheduled arrival time when his prior job was running late. Was very professional and quickly resolved the problem. I will definitely consider Lee's Air for any future projects."
+21
Serving Lincoln, CA and surrounding areas
Approved
Super Service Award Winner
In business since 2018
Free estimates
Emergency services offered
"Excellent service for our Central A/C system installation. The technician was professional, knowledgeable, and completed the work on time. Everything was explained clearly, and the system is running perfectly. I would highly recommend Go Pro Plumbing, Heating & Air for quality A/C service."
+77
Serving Lincoln, CA and surrounding areas
Approved
In business since 1979
Free estimates
Credit card accepted
"I had a problem with the air turning off before reaching desired temperature. The technician quickly solved the problem....a bad thermostat! Service was great!"
Serving Lincoln, CA and surrounding areas
Approved
Super Service Award Winner
In business since 2017
Emergency services offered
Warranties offered
"My air conditioner stopped working tonight. I have a heart condition that requires a cool house. Juliano came out at 9:30pm and fixed the a/c. He was professional, courteous and personable. He explained what the problem was and how he was going to repair it. Most of all, he established trust with me, which is the most important quality that I look for when seeking out companies I want to hire. Romano HVAC gave me A++ service, and I am so grateful that my home is once again comfortably cool."
+6
Serving Lincoln, CA and surrounding areas
Approved
In business since 1963
Free estimates
Emergency services offered
"Their sales representative, aaron, responded quickly to my posting for the installation of a new central heat air unit. His explanation of my alternatives was very thorough. He arranged for an installation of the new unit 2 days later. The installation crew arrived early, we're very efficient, and cleaned up the area after their departure. I was very pleased with the service provided by Clarke and Rush on this job."
+12
Serving Lincoln, CA and surrounding areas
Approved
In business since 2019
Free estimates
Warranties offered
"Attic was air gap sealed first, before added blown insulation. I immediately noticed that the interior stayed cooler during the day without a/c. Jesse the owner was great with estimating and evaluating need. No pressure, just honest info. He was on site during job documenting and sharing progress. Very impressed with service and quality."
+14
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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