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Top-Rated Air conditioning pros in Littleton - Updated Nov 2026

Avatar for Pacific Air, Inc.
Pacific Air, Inc.
4.8(
84
)
Central A/C - Service or Repair

Serving Littleton, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2004

Free estimates

Offers commercial services

"I had the AC person out who had been servicing my AC as well as my mom’s for years and he told me the unit was shot and I needed to replace the whole thing. I called Pacific Air this morning, they came at noon, had it up in running 20 minutes later. Only charged me the service fee. While I am sad about the other guy trying to rip me off, I am so happy I called Pacific Air. An honest, fair, professional company."
New inside set up
New Outside set up
Before inside set up
Before outside set up
Response time4 hrs
Response rate96%
1 neighbors recently requested a quote
Avatar for Emporia Home Services
Emporia Home Services
4.8(
22
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+8 more

Serving Littleton, CO and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

Heating, Cooling & Electrical Services Emporia is committed to keeping you comfortable in your own home with expert service, quality parts and equipment, as well as unique technology designed and assembled with care by our own engineers right here in Colorado. Emporia proudly serves Littleton, Lakewood, and the Denver Metro area with quality Heating, Ventilation, and Air Conditioning (HVAC) solutions. Our goal is to ensure that every customer receives best-of-class service and reliable products, all at the lowest possible price we can offer.

Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+11

Response time2 days
Response rate100%
8 neighbors recently requested a quote
Avatar for Bee There Heating & Air
Bee There Heating & Air
4.9(
75
)
Central A/C - Service or RepairCentral A/C - Service or Repair - For Business

Serving Littleton, CO and surrounding areas

Approved

In business since 2015

Free estimates

Emergency services offered

"Jason Stubbings was awesome! Professional and upfront. He walked me through everything and did a quality job. Withing a couple of minutes he diagnosed our air conditioner root cause (it was throwing the breaker). He had it up and running quickly with a new capacitor. He then checked everything out and topped the freon. Note our air conditioner is a Carrier and is about 23 years old. Never had an issue before. Jason saved us from someone trying to just replace it with a new one. Keep up the great work Jason!"
Littleton
Denver
Highlands Ranch
Littleton
Lakewood

+21

Response time3 hrs
Response rate88%
Recommended by97%of homeowners
Avatar for Comfair Heating and Cooling LLC
Comfair Heating and Cooling LLC
5.0(
24
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+4 more

Serving Littleton, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Emergency services offered

"So happy with my new furnace! Habib was super responsive and squeezed me in right after our first cold snap, right before Christmas. Did a great job explaining things both about the new unit and the concerns about my old/broken. Very competitively priced. His whole team was professional and respectful. They left my place spotless after the install. Will be contacting ComfAir again when my 30 year old AC inevitably bites the dust!"
Commercial
Commercial
Furnace fix
New  Unit install
Residential

+3

Response time3 hrs
Response rate100%
Avatar for Apple Aire Heating & Cooling
Apple Aire Heating & Cooling
4.5(
205
)
Central A/C - InstallDuctless Mini-split A/C - Install or Replace

Serving Littleton, CO and surrounding areas

Approved

In business since 1988

Free estimates

Emergency services offered

"From the initial evaluation visit to the design to the install, Apple Aire did a fantastic job. They were very responsive in all phases of the project. The project coordinator Nate did a great job explaining my options and answering my questions. I would definitely recommend Apple Air for any HVAC project."
High efficenty Lochinvar Knight Boiler
New Dunkirk boiler installed
Old boiler
Systems 1 and 2
System 2

+14

39 neighbors recently requested a quote
Recommended by91%of homeowners
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FAQs for air conditioning projects in Littleton, CO

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 Littleton, CO homeowners’ guide to air conditioning services

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