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

Avatar for Lous Heating and Cooling LLC
Lous Heating and Cooling LLC
5.0(
71
)
Central A/C - Service or RepairSwamp Cooler - Service or RepairCentral Air Cleaner - Install or Replace+2 more

Serving Northglenn, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Free estimates

Emergency services offered

"The work done was exceptional. It was done in an efficient and timely matter. Louis showed expert knowledge and gave terrific customer service. He answered all my questions and helped me with my new air conditioning system. I would definitely recommend his work to anybody who is looking for a hard-working and knowledgeable HVAC provider! I could tell he really cared about the work and if ther is any other services I need, he will be my first call. Thank you again Louis"
80% Furnace Replacement
1998 York Furnace
Air Conditioner Replacement
Furnace Replacement
Swamp Cooler Deep Cleaning

+7

Response time4 hrs
80 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Behold Heating & Cooling Services
Behold Heating & Cooling Services
5.0(
87
)
Central A/C - InstallCentral A/C - Service or RepairCentral Humidifier - Install or Replace+2 more

Serving Northglenn, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Emergency services offered

"We had an outstanding experience with Behold Heating & Cooling Services! Our HVAC blower (squirrel cage) failed on Thursday evening, just before a weekend with temperatures expected to reach 102 degrees. After calling multiple HVAC companies and being told no one could come out until the following week, Behold was able to schedule Erfan Azimi to come out right away. Erfan quickly diagnosed the problem, picked up the necessary parts, and had our air conditioning back up and running before the weekend. He was personable, knowledgeable, efficient, and took the time to explain everything clearly. We truly appreciated the prompt service and professionalism, especially given how busy HVAC companies are during this heat. I highly recommend Erfan Azimi and Behold Heating & Cooling Services. They turned what could have been a miserable weekend into a comfortable one!"
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 New Era HVAC
New Era HVAC
4.8(
28
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+5 more

Serving Northglenn, CO and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"New Era HVAC was amazing! I own a small business that has a very challenging environment to work around. Jared was extremely professional and minimized the disruption to our routine. We have large warehouse heaters. A few years ago we had one installed by another company. They left a huge mess, took 2 1/2 days to do the work and had no regard for disrupting our business. In contrast, when Jared replaced the second one he was done in one day, left the area clean and neat when he left, and was extremely accommodating with us. We have also had a tankless water heater replaced by New Era and had the same experience. Professional, honest, and reliable - you will not find a better company out there!!"
Navien tankless water heater pvc direct vent
Navien tankless water heater hard piped (copper)
Navien tankless water heater (acid neutralizes)
Gas fired unit heater
Swamp cooler

+49

Response time12 hrs
Response rate98%
Recommended by100%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 Northglenn, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Emergency services offered

"Habib is seriously the most thorough professional we have ever had! He expertly explained the new AC/furnace system to us so we knew precisely how the system worked, before he installed anything. He was so considerate and enthusiastic and he loves helping his customers. Our A/C unit worked so well and I know our brand new furnace will be great this winter. If I could give him 10 stars I would because he was so knowledgeable and conscientious!"
Commercial
Commercial
Furnace fix
New  Unit install
Residential

+3

Response time3 hrs
Response rate100%
Avatar for Elevation HVAC
Elevation HVAC
5.0(
18
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral Humidifier - Install or Replace+1 more

Serving Northglenn, CO and surrounding areas

Approved

In business since 2019

Free estimates

Warranties offered

"Tony was very easy to work with and accommodating. I had narrowed my choice to 3 firms. Elevation was not the cheapest nor the most expensive but I felt most comfortable with Tony and believe he offered the most value. My air conditioner was installed today, I hope this will be the start of a great (and cool) relationship."
Furnace replacement
Furnace replacement
Furnace replacement
Furnace replacement
Furnace replacement

+5

Response time2 hrs
Response rate88%
Recommended by100%of homeowners
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FAQs for air conditioning projects in Northglenn, 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 Northglenn, CO homeowners’ guide to air conditioning services

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