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Verified Reviews for Air Conditioning pros in Arnold, MO

*The Angi rating for Air Conditioning companies in Arnold, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Air Conditioning needs.

*The HomeAdvisor rating for Air Conditioning companies in Arnold, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Air Conditioning needs.

Last update on September 10, 2025

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Avatar for Dunn Heating Air Conditioning and Plumbing
Dunn Heating Air Conditioning and Plumbing
4.7(
274
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace

Serving Arnold, MO and surrounding areas

Approved

In business since 2003

Free estimates

Emergency services offered

"I recently had a positive experience with Dunn Service regarding boiler issues, and I wanted to share my thoughts. The technician arrived promptly at the scheduled time and approached their tasks with expertise and precision, ensuring that all problems were thoroughly addressed. The pricing for their professional services was reasonable. Overall, based on my experience with Dunn Service—characterized by politeness, professionalism, and fair pricing—I would highly recommend their services to anyone facing heating and air conditioning issues."
Additional Photos
Response time2 days
29 neighbors recently requested a quote
Recommended by89%of homeowners
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Avatar for Mechanical Climate Solutions, LLC
Mechanical Climate Solutions, LLC
4.9(
66
)
Central A/C - Service or RepairCentral A/C - Service or Repair - For Business

Serving Arnold, MO and surrounding areas

Approved

In business since 2014

Free estimates

Emergency services offered

"We got a call from MCS to schedule an appointment as we needed soon. The tech came as promised, diagnosed AC unit, did the repair, and fixed the AC unit."
17 Seer 2 stage condensing unit.
Response time11 hrs
2 neighbors recently requested a quote
Recommended by98%of homeowners
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Avatar for Liberty Heating & Cooling
Liberty Heating & Cooling
4.8(
46
)
Central A/C - InstallCentral A/C - Service or RepairCentral A/C - Install - For Business+1 more

Serving Arnold, MO and surrounding areas

Approved

Super Service Award Winner

In business since 2017

Emergency services offered

Warranties offered

"Great job with AC repair!"
A/C replacement
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+10

5 neighbors recently requested a quote
Recommended by93%of homeowners
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Avatar for Comfortable Carla's, LLC
Comfortable Carla's, LLC
5.0(
21
)
Central A/C - InstallCentral A/C - Service or Repair

Serving Arnold, MO and surrounding areas

Approved

In business since 1954

Free estimates

Emergency services offered

"They came out and cleaned the outside unit. The a/c is doing a better job keeping up with this heat."
Double System Install
Double System Install
Double System Install
Furnace Replacement
Furnace Replacement

+1

Response time4 hrs
Response rate100%
77 neighbors recently requested a quote
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Avatar for Froggy's Heating and Air, LLC
Froggy's Heating and Air, LLC
4.4(
91
)
Central A/C - Service or Repair

Serving Arnold, MO and surrounding areas

Approved

In business since 2006

Free estimates

Credit card accepted

"Great guy and good service had me fixed up went out of his way to get ac going."
Heating & Cooling 1
Heating & Cooling 1
Heating & Cooling 1
Response time11 hrs
2 neighbors recently requested a quote
Recommended by92%of homeowners
Request Quote
Perfect Air
4.7(
6
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+3 more

Serving Arnold, MO and surrounding areas

Approved

In business since 1982

Emergency services offered

Warranties offered

Founded in 1982. Team members that are drug tested and background checked insuring that the people in your home are safe. We specialize in repairing and replacing residential heating and air conditioning systems. "Fixed Right or It's Free"\nTechs available Sat & Sun call for appointment.

2 neighbors recently requested a quote
Recommended by100%of homeowners
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Avatar for Hoffmann Brothers
Hoffmann Brothers
4.5(
43
)
Central A/C - Service or Repair

Serving Arnold, MO and surrounding areas

Approved

In business since 2000

Emergency services offered

Credit card accepted

"They were on time, efficient. Quality was excellent with a couple of hiccups, which they resolved the same when it failed inspection on hwh. I fixed furnace air leak myself with metal tape."
Installation
Installation
Heat Pump
Heat Pump
Furnace

+14

4 neighbors recently requested a quote
Recommended by97%of homeowners
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Avatar for Hively Home Comfort LLC
Hively Home Comfort LLC
4.8(
47
)
Central A/C - Service or Repair

Serving Arnold, MO and surrounding areas

Approved

In business since 2017

Free estimates

Credit card accepted

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

2 neighbors recently requested a quote
Recommended by65%of homeowners
Request Quote
Avatar for All American Appliance Service Inc
All American Appliance Service Inc
4.5(
529
)
Central A/C - Service or RepairCentral A/C - Service or Repair - For Business

Serving Arnold, MO and surrounding areas

Approved

In business since 1980

Free estimates

Emergency services offered

"Logan was polite, & respectful completed the job in a timely manner. Cleaned up any mess that was made. I will definitely request Logan again for any additional appliance repair I may need."
Additional Photos
Response time2 days
6 neighbors recently requested a quote
Recommended by89%of homeowners
Request Quote
Adams Air Conditioning & Heating, LLC
4.5(
9
)
Central A/C - Service or Repair

Serving Arnold, MO and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

Adams Air Conditioning & Heating LLC has over 30 years professional experience. We can service any AC unit and have you up and running. servicing the St. Louis area, we take pride in always being prompt, punctual and professional with every project that we complete. Free estimates, please call anytime - offer emergency service. \n

Response time4 hrs
Response rate89%
2 neighbors recently requested a quote
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Air Conditioning questions, answered by experts

During the summer, it’s best to set your AC to 78 degrees when you’re home and awake, according to the Department of Energy (DOE). For better energy efficiency, raise the temperature slightly to 85 degrees while you’re out of the house. The National Sleep Foundation advises lowering your thermostat to between 60 and 67 degrees when you’re asleep.

Signs that your air conditioner capacitor is bad or failing include a range of symptoms. The AC unit may not turn on at all, or it might struggle to start before shutting down randomly or in the middle of a cooling cycle. You might hear a humming or banging noise when it attempts to start, or the compressor might hum without the unit actually running. Other indicators include a smell or smoke coming from the unit, the blower circulating room-temperature air instead of cold air, and an unexpected increase in your energy bills.

There are several common types of HVAC systems that you may have, including split systems, hybrid HVAC, duct-free systems, packaged heating and air, geothermal heating, or even portable units for heating or cooling. If you aren’t sure which type is in your home or are looking to install something different, you should consult an HVAC pro to determine which option is right for your heating and cooling needs.

NATE (North American Technician Excellence) certification is not legally required for HVAC technicians in most areas, but hiring a professional with this certification is highly recommended. NATE-certified technicians demonstrated their expertise and proficiency in different types of HVAC systems, offering assurance of quality service. It's a voluntary certification, yet it indicates a commitment to professionalism and ongoing training. Choosing a NATE-certified technician often means you're working with someone who is up-to-date on industry standards and best practices, which can lead to better service, energy efficiency, and long-term cost savings.

Traditional central air conditioning systems require ductwork to circulate air throughout the home. Alternatively, you can add air conditioning with a mini-split ductless air conditioning system, which can be just as energy efficient as a central air conditioner. This type of system consists of two units–an outside unit that holds the compressor and condenser and an indoor unit that holds an air-handler. With multi-zone ductless systems, there are multiple indoor air handlers tied to a single outdoor compressor/condenser, allowing the system to cool multiple rooms.

The Arnold, MO homeowners’ guide to air conditioning services

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

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