Serving North Las Vegas, NV and surrounding areas
Approved
In business since 2019
Free estimates
Emergency services offered
"Steve Frederick did an excellent job explaining to me the issue and parts to be replaced on my air conditioning. Now my unit is working"
+12
Serving North Las Vegas, NV and surrounding areas
Approved
In business since 2012
Free estimates
Warranties offered
"A-Tech is the only air conditioning company I will ever do business with. Very professional, honest, and reasonable cost."
Serving North Las Vegas, NV and surrounding areas
Approved (Corporate)
Super Service Award Winner
In business since 1974
Free estimates
Emergency services offered
"One hour air-conditioning is way better than any other company here in Las Vegas area. I would highly recommend them to do any of your air-conditioning work. My technician Timothy came out at 10:30 PM on a Saturday night and had my air-conditioning up and running within the hour."
+1
Serving North Las Vegas, NV and surrounding areas
Approved
In business since 2021
Free estimates
Emergency services offered
"Marco did a great job, I could not have been more pleased with the service Marco and his team provided. They arrived on time and placed protective coverings on all interior floors. The overall time required to complete the job was right in line with what was estimated. Quality of the work was exceptional and I was able to see all aspects of the installation and exactly what the scope of work entailed. Marco did a great job on summarizing the entire project including the final testing and commissioning. They also will register all the new equipment with the Vendor to ensure proper warranty. Job cleanup was excellent and any access doors/hatches were restored to original condition. I would most strongly recommend M A C Tech to anyone who wants a quality job at a reasonable price. Thanks Marco! -Dave"
+222
Serving North Las Vegas, NV and surrounding areas
Approved
In business since 2013
Free estimates
Emergency services offered
"I believe his name was Josh He was very professional, got right to it, said it would be no problem and went right to it. It didn't take that long We've used Pure Plumbing previously regarding an broken air conditioning unit and the lead worker was Juan who had the same sort of nice personality and got the job done quickly. We think this is the best plumbing company in Las Vegas...just our opinion"
+7
Serving North Las Vegas, NV and surrounding areas
Approved
Super Service Award Winner
In business since 2025
Free estimates
Emergency services offered
"Was very efficient. patient job Well done Will? have them service my air conditioning again 💯 percent With no doubt"
+87
Serving North Las Vegas, NV and surrounding areas
Approved
In business since 2017
Free estimates
Emergency services offered
"Contacted me right away & since it was too late to come out on the night my air conditioner stopped working came out at 8:00 am next morning & had it working in a short period of time. Very friendly and efficient - would definitely recommend them."
+16
Serving North Las Vegas, NV and surrounding areas
Approved
Super Service Award Winner
In business since 2007
Free estimates
Emergency services offered
"Good company to hire for installation of a central air conditioning and heating system."
+4
Serving North Las Vegas, NV and surrounding areas
Approved
In business since 2000
Free estimates
Emergency services offered
"All went well, and air conditioning working well."
+18
Serving North Las Vegas, NV and surrounding areas
Approved (Corporate)
In business since 1984
Free estimates
Emergency services offered
"They did a wonderful job got it all installed in 4 hours the only thing left is for them to go ahead and fix the opening to The Attic. New Carrier air conditioning system very quiet, I'm very pleased."
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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