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Find Air conditioning pros in High Ridge

Avatar for Dunn Plumbing, Heating and Air Conditioning / Dunn One Hour Heating and Air Cond
Dunn Plumbing, Heating and Air Conditioning / Dunn One Hour Heating and Air Cond
4.7(
273
)

Serving High Ridge, 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
20 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Mechanical Climate Solutions, LLC
Mechanical Climate Solutions, LLC
4.9(
66
)

Serving High Ridge, MO and surrounding areas

Approved

In business since 2014

Free estimates

Emergency services offered

"Customer service was very helpful, tech was able to quickly diagnose the problem and solve it. We signed up for their preventative service HVAC."
17 Seer 2 stage condensing unit.
Response time11 hrs
4 neighbors recently requested a quote
Recommended by98%of homeowners
Perfect Air
4.7(
6
)

Serving High Ridge, 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.

1 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Hoffmann Brothers
Hoffmann Brothers
4.5(
43
)

Serving High Ridge, 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

1 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for Aire Serv of St. Louis
Aire Serv of St. Louis
5.0(
5
)

Serving High Ridge, MO and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

Looking for reliable HVAC service in St. Louis? Aire Serv of St. Louis is your local expert for residential and commercial heating and cooling. From emergency AC repair during humid Missouri summers to furnace maintenance before the winter chill, our professional technicians are available to keep your home comfortable. We pride ourselves on transparent, upfront pricing, no overtime charges, and the "Done Right Promise." Whether you need a system replacement, duct cleaning, or a routine tune-up in Fenton, Webster Groves, or Kirkwood, we are the team you can trust. Breathe easy with Aire Serv—your comfort is our top priority. Call us today to schedule your service!

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33 neighbors recently requested a quote
Avatar for Show-Me Comfort LLC
Show-Me Comfort LLC
5.0(
5
)

Serving High Ridge, MO and surrounding areas

Approved

Hello, My Name is Johnathan Steele, Owner Operator of Show-Me Comfort Heating and Air Conditioning. I started my company with the intent to help and show transparency to my customers and to educate them to the best of my abilities on the system that keeps their Home Comfortable. Most Companies will come in to a house fix the issue then leave… That’s where we try and separate ourselves by finding the culprit, educating our customers on why it happened and how to prevent future problems. \n\nWe at Show-Me Comfort Heating and Air Conditioning take pride in our work, and if we wouldn’t do it in our house we wouldn’t do it to yours.

Avatar for Family Tys Heating and Air, LLC
Family Tys Heating and Air, LLC
5.0(
6
)

Serving High Ridge, MO and surrounding areas

Approved

In business since 2022

Emergency services offered

Warranties offered

"Family Ty's Heating and Cooling is a very Professional company Mr Harris and his Crew installed me a Central Air Unit they were very reasonable and professional it was installed in s timely manner i would Highly Recommend Family Ty's Heating and Cooling for all your Service needs"
Clean and Check A/C unit
Clean and Check A/C unit
Clean and Check A/C unit
Clean and Check A/C unit
Clean and Check A/C unit

+3

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Showing 1-10 of 193

FAQs for air conditioning projects in High Ridge, MO

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 High Ridge, MO homeowners’ guide to air conditioning services

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