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Find Air conditioning pros in Mount Lemmon

Avatar for Dynamic Comfort LLC, AC and Heating
Dynamic Comfort LLC, AC and Heating
5.0(
20
)

Serving Mount Lemmon, AZ and surrounding areas

Approved

In business since 2015

Free estimates

Emergency services offered

"My A/C unit was blowing hot air out on Tuesday 4/15 and I called Dynamic Comfort who installed it that afternoon. On Wednesday 4/16 Will came out gave it a leak test and determined that I did in fact have a leak and he gave some refrigerant to last through the night which it did. On Thursday 4/17, Brandon came out and found the leak, but that was not the only problem, he stayed here for around 5 hours until he found the problem, which was a bad pipe that needed to be replaced. Brandon did a very through job in finding the problem and he wasn't going to leave until the problem was fixed. Dynamic Comfort has always provided me the most excellent service and this was another prime example. Kudos to them and their technicians Will and Brandon!!!!"
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+47

Response time1 day
16 neighbors recently requested a quote
Recommended by62%of homeowners
Avatar for Top Care Air, LLC
Top Care Air, LLC
4.7(
14
)

Serving Mount Lemmon, AZ and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

"Top Air Care was the PERFECT company to hire. They take all the care in every part of the job. From scheduling to install there was so much attention to detail I felt in great hands. They picked up after themselves and even called a couple days later to make sure everything was still working properly. Will definitely keep hiring them and I recommend you do too!"
My jobs
My jobs
105 neighbors recently requested a quote
Avatar for Cool Willy's
Cool Willy's
5.0(
5
)

Serving Mount Lemmon, AZ and surrounding areas

Approved

In business since 2013

Free estimates

Credit card accepted

We focus on preventative care that extends the life of your home’s systems, especially in demanding desert conditions.\n\nWe offer 24/7 availability with fast response times. Same-day service available, or your diagnostic is waived. With more than 1,500 5-star reviews, homeowners trust us to get the job done right. New customers can take advantage of our $39 AC deep clean.

Our techs at work
Our techs at work
Our techs at work
Our techs at work
Our techs at work

+2

1 neighbors recently requested a quote
Avatar for JNJ Heating & Cooling
JNJ Heating & Cooling
5.0(
5
)

Serving Mount Lemmon, AZ and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

We are a family owned business with 30 years of experience. We provide the best quality work and give reasonable prices. We ourselves the owners come to your home negotiate any issues you have and fix it. We give free ESTIMATES fill free to call or text us for your hvac needs. EMERGENCY calls we are ready 24/7. Night or Day JNJ’s on the way.

Package unit install
Avatar for Mark Heating & Cooling Services, LLC
Mark Heating & Cooling Services, LLC
5.0(
8
)

Serving Mount Lemmon, AZ and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

Mark Heating & Cooling Services is a locally owned and operated leader in\nHVAC design, installation, and maintenance across the Tucson area.\nWe take immense pride in providing our community with honest, high-quality service tailored to the unique desert climate.\nWhether it's a residential emergency repair or a large-scale commercial installation, our goal is to ensure your comfort using the industry's most advanced, environmentally friendly technology. Our expert technicians are continuously trained on the latest \nsystems, so you can trust you're getting the most reliable advice for your specific needs.

Project Photos
Project Photos
2025 Rooftop American Standard 16Seer hybrid Ac un
3 neighbors recently requested a quote
Avatar for Serrano's Heating and Cooling LLC
Serrano's Heating and Cooling LLC
5.0(
6
)

Serving Mount Lemmon, AZ and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

At Serrano's Heating & Cooling LLC, our mission is to deliver reliable, high-quality HVAC services with exceptional customer care, honesty, and professionalism—ensuring every customer's comfort and satisfaction. We're Your Home's Comfort Heroes, proudly serving our community with trustworthy, top-notch solutions that keep homes cozy year-round. Call us at (520)850-6874 or Book Online at serranosHVAC.com\n

Standing Above All
Taking Pride In Work
AccuClean™ Close-up
Condensers
Furnaces

+41

12 neighbors recently requested a quote
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FAQs for air conditioning projects in Mount Lemmon, AZ

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.

The Mount Lemmon, AZ homeowners’ guide to air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.