Serving North Las Vegas, NV and surrounding areas
Approved
In business since 2019
Free estimates
Emergency services offered
"Absolutely Great Service & Prices. A firm that "REALLY" takes care of its customers on every level. I'll never use another service provider again. Simply Air Conditioning Heating & Plumbing are the "BEST.""
+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
"Coming home from a vacation and finding out that my second level air conditioning is not working in early August in Las Vegas is not a good feeling. Called this company, MAC Tech and Marco was able to come and save the day. Both of our units are original so they're very old. He fixed it without unnecessary repair/replacement or upselling us. He gave his honest opinion and our expectations with our very old and tired AC units, which we kind of already knew. But he also gave us suggestions on how to keep it maintained to make it last a little longer. All that for a very reasonable fee. Fixing our air conditioning the same day we called Marco and giving us very valuable suggestions regarding our air conditioning is more than enough for me to confidently recommend this company and Marco to all our friends, family."
+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
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
"Very thorough and knowledgeable technician. Also very helpful to me, giving me tips on what I can do to save money and maintain my air conditioning unit"
+4
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"
+83
Serving North Las Vegas, NV and surrounding areas
Approved
In business since 2011
Free estimates
Emergency services offered
"I've been using Johnny On the Spot for many years now and they have come through every time for me. They replaced my Air Conditioner and my Hot Water Heater and my Heater system to be at their best all the time. Every year they come and inspect them for $39.00 and keep them working so as to not have any emergencies! Yesterday Arturo Agundez inspected my Air Conditioner and Tony Castellanos inspected my Hot Water Heater. Arturo found my Air Conditioner to have no problems but he cleaned my filter and checked all aspects of it to be working great and found some things to be concerned about. Tony found a problem with my Water Heater Anode Rod and thankfully replaced it so I would have no emergency problem with it sooner than later. Both of them showed up on time and with their expertise I knew I was in good hands! I highly recommend Johnny On the Spot for their service as you will be in good hands I promise and I will continue to use them in the future."
+2
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
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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