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
"John came out and was very educational about the whole A/C purchasing experience. We got 3 estimates for the replacement of our system, but One Hour Air Conditioning and Heating was the only company that took the time to sit down and go over where my money was going and to build value into what I was purchasing. There was no hard sale and we were given all the time we needed to make a purchasing decision. I would definately recommend One Hour Air Conditioning and Heating!"
+1
Serving North Las Vegas, NV and surrounding areas
Approved
In business since 2021
Free estimates
Emergency services offered
"I had a great experience with MAC Tech. Marco was able to provide same-day service when my upstairs AC stopped cooling. He was professional, knowledgeable, thorough, and took the time to properly diagnose the issue instead of immediately recommending an expensive replacement. He explained everything clearly, answered all of my questions, and never pressured me into unnecessary repairs. He replaced a failed capacitor, topped off the refrigerant, cleaned the condenser coils, and had my AC cooling again the same day. After receiving a very different opinion from another HVAC company, it was refreshing to work with someone who focused on diagnosing and fixing the actual problem. Marco mentioned they’re a small family business, and it really showed in the level of care, honesty, and customer service he provided. I highly recommend MAC Tech to anyone looking for a knowledgeable, trustworthy HVAC company. Thank you again, Marco!"
+222
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"
+101
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
"Ed is a customer oriented person, the installers finished the job on time. Thank you Air Pro Master!"
+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
"We have used Yes for our air conditioning and heating tune ups and repair for years. They are helpful and courteous. They added insulation so our heating and air conditioning system doesn’t have to work so hard. They also cleaned the ducts. The unit is working great."
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.
Use this guide to budget for appliance installation costs based on factors such as appliance type, installation complexity, labor rates, and more.
Explore how factors such as materials, local labor rates, and the type of damage affect the cost to repair a burst pipe.
Use this guide to learn how much rebar costs per foot so you can budget for your next big home improvement project.
Discover how factors such as linear footage, local labor rates, and trim type affect the total cost of painting baseboards.
Learn how much cat or dog door installation costs based on factors like the door size, material, location, and added features.
Discover how much an electric furnace costs based on factors such as unit size, local labor rates, electrical upgrades, and ductwork condition.