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Top-Rated Air conditioning pros in Lone Tree - Updated Nov 2026

Avatar for Quality West Heating & Cooling
Quality West Heating & Cooling
4.7(
338
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace

Serving Lone Tree, CO and surrounding areas

Approved

In business since 2002

Free estimates

Warranties offered

"My furnace went out and cuddly I found myself getting bids for a replacement. I don’t make large purchases without a ton of analysis to ensure the right solution for the best price. I didn’t just have a broken furnace I have air flow issues too as the rooms furthest away never get enough air. I didn’t want to just replace I wanted to solve a 23-year-old problem. Rob was out the same day walking me through options and not over selling just giving me the facts and not pushy. His approach to resolving the air flow made sense and was very conservative as he proposed small low cost/no cost changes we could implement over time after a period of observation with the new system instead of hitting me up front with new dampers etc. up and making significant changes to the air flow. Rob clearly knew what he was talking about and has likely installed himself over the years as many systems as he has sold. There were three other comparable bids and none of them were even close to the value I was to receive from Quality West. These guys don’t look at each install as just another job they take pride in their work, are extremely professional and even have some fun along the way. They were creative in their piping as I upgraded to a two-stage variable speed system that required PVC piping so the ascetics of the piping in and outside of the home mattered to me and they were conscious of that. I would much rather work with a company like these guys that are dependent on referrals instead of doing a bunch of advertising because for them customer satisfaction really matters. This is the reason for this long review as they deserve the recognition and I would highly recommend Rob and his team Bob and Dave."
This image shows the wall mounted unit that will cool and heat the whole living room area without any noise.
Response time2 days
Response rate100%
9 neighbors recently requested a quote
Avatar for Pacific Air, Inc.
Pacific Air, Inc.
4.8(
84
)
Central A/C - Service or Repair

Serving Lone Tree, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2004

Free estimates

Offers commercial services

"Our residential AC is in a converted bus. We are new to the area, and first called several other companies who could not work on it (because they were RV repair technicians and not HVAC certified) or would not work on it (because most HVAC certified technicians were not work on motorhomes). We are so grateful that Pacific air was willing and able to work on our unit. We are fully satisfied with the work they did, as well as the very reasonable fee they charged."
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 M & H Air, LLC
M & H Air, LLC
5.0(
18
)
Central A/C - Service or RepairCentral A/C - InstallCentral A/C - Install - For Business+1 more

Serving Lone Tree, CO and surrounding areas

Approved

In business since 2001

Free estimates

Credit card accepted

"M&H Air helped upgrade Gas furnace/ Forced air heating system, by adding new ducts and vents in basement to help create more comfortable living space. Also has provided great preventive maintenance service to my Heating and A/C system!"
M & H Air, LLC
Victory Outreach Church
2 neighbors recently requested a quote
Avatar for Behold Heating & Cooling Services
Behold Heating & Cooling Services
5.0(
87
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace

Serving Lone Tree, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Emergency services offered

"Great experience with seasonal maintenance check. They arrived early in appointment window, checked furnace, humidifier, & air conditioning, explained everything clearly. They replaced a filter, examined every part of air conditioning system, made some recommendations, had easy payment system. I will look forward to using them again!"
Mini Split Install
A nice, new, clean Boiler - restoring heat right in time for the evening!
Glad we were able to restore heat same day for this customer.  Replaced Furnace and A/C for proper installation, air flow and 10 year warranty on FULL SYSTEM.
Glad we were able to restore heat same day.   Full Boiler replacement, repipe and zone valves.
Mini Split Install

+67

20 neighbors recently requested a quote
Recommended by41%of homeowners
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+3 more

Serving Lone Tree, 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
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Additional Photos
Additional Photos

+11

Response time2 days
Response rate100%
8 neighbors recently requested a quote
Avatar for D&D Air Duct Pros
D&D Air Duct Pros
5.0(
17
)
Air Ducts & Vents - Clean

Serving Lone Tree, CO and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"It was very easy to work with D&D Air Duct Pros. They were very responsive and made scheduling easy. They showed up on time, were very friendly, and did a great job. They provided before and after pics of our ducts and went above and beyond to make sure they were as clean as possible! I would definitely recommend this pro."
Aftet
Save
After
Air Ducts
After

+35

2 neighbors recently requested a quote
Recommended by47%of homeowners
Avatar for Mountain Pro HVAC Services, LLC
Mountain Pro HVAC Services, LLC
5.0(
126
)
Central A/C - Service or RepairCentral A/C - Service or Repair - For Business

Serving Lone Tree, CO and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"Adrians relentless efforts to get our swamp cooler up and running were very much appreciated. He was very knowledgeable and kept us informed throughout the entire process. We will definitely reach out to him in the future when we decide to install central AC."
Maintenance Services
Maintenance Services
Maintenance Services
Maintenance Services
New AC / Furnace Install

+4

Response time11 hrs
Response rate92%
Recommended by100%of homeowners
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Air Conditioning FAQs, answered by experts

One of the fastest ways to unfreeze an AC unit is to turn off the unit and, if it’s warm outside, use the fan-only mode to help blow warmer air through the unit to speed up the defrosting process. While it may be tempting to use a hair dryer to defrost the air conditioner, that high heat can damage the coils.

After defrosting, if you can safely solve the issue with a fix like changing the filter, go ahead and do so. Otherwise, call in a pro before turning your AC back on.

The compressor is the heart of your AC system and is one of the most important parts required to keep it functioning properly. If your AC unit is making a popping, banging, clanging, clicking, or screeching sound, it could point to a problem with the compressor. If the unit is physically vibrating, that can also be an indication that your AC compressor is going bad.

Yes, a dirty evaporator coil can freeze up. Dirty evaporator coils can’t absorb or transfer heat properly. The dirt and grime restrict airflow, which is needed to move heat throughout the system properly. Your air conditioning unit could freeze over, or it can cause your heat pump to freeze.

It’s critical to use the right size AC for your space and not go too small or too big. If you purchase an undersized unit, it won’t properly cool your house, and it has to work harder to reach the optimal temperature. This will eventually wear your unit out. An oversized unit can spell trouble because it will turn off and on more frequently, which also wears out your AC unit. An oversized unit also causes humidity in the home.

If your drain line is clogged, your AC might stop cooling, shut down, or refuse to turn on at all. Otherwise, you might see your AC leaking water, find standing water or water damage near the unit, or notice a musty smell coming out of your air conditioner or vents.

The Lone Tree, CO homeowners’ guide to air conditioning services

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