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Find Air conditioning pros in Dunwoody

Avatar for R Wiley Heating & Air
R Wiley Heating & Air
4.7(
1,114
)

Serving Dunwoody, GA and surrounding areas

Approved

In business since 1986

Free estimates

Emergency services offered

"This was my second quote and this company is amazing. Quickly identified the issue, changed the motor, provided a filter and made sure everything was working on one trip within a few hours. The previous company (Air Pros, LLC) said it was unfixable and tried to sell me a new unit over $6k which was a huge scam. Don't go to those guys, work with this family owned honest business. Keep in mind HVAC repairs in many cases are not cheap, I own 3 houses and have paid several hundred or more when an HVAC is old and need repairs."
Additional Photos
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Response time10 hrs
45 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Atlanta Air Authority, Inc.
Atlanta Air Authority, Inc.
4.9(
237
)

Serving Dunwoody, GA and surrounding areas

Approved

In business since 1995

Free estimates

Emergency services offered

"Atlanta Air Authority was thoroughly professional throughout the process of replacing my HVAC system. And their good advice even saved me money. They were able to do the job the day after I agreed to hire them, showed up on time, did a very professional installation, cleaned up the work area and hauled off the old equipment. I couldn't be happier."
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+9

Response time4 hrs
3 neighbors recently requested a quote
Recommended by99%of homeowners
Avatar for Dayco Systems LLC
Dayco Systems LLC
4.9(
179
)

Serving Dunwoody, GA and surrounding areas

Approved

In business since 2006

Free estimates

Emergency services offered

"Dean and his team did in excellent job in installing my NEW HVAC system. I had been nursing my old system for the last couple of years. I finally went to the most trusted HVAC company that have worked with for years. The new system chills my first floor down in minutes. I should have done this sooner. Thanks for the all the folks that did the work and the professional staff in the front office and Sales."
Additional Photos
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+56

44 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Paze Heating & Cooling
Paze Heating & Cooling
4.7(
71
)

Serving Dunwoody, GA and surrounding areas

Approved

In business since 2010

Emergency services offered

Warranties offered

"Zeno was very professional and explained everything he was doing and why. He was also very prompt which I appreciated as I did not have cool air blowing out of my unit, and it was very hot that day."
Carrier
Carrier Furnace
Carrier Furnace
Carrier Furnace
Carrier A/C

+18

Response time5 hrs
7 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Ace & A Heating & Air Conditioning of DeKalb
Ace & A Heating & Air Conditioning of DeKalb
4.7(
94
)

Serving Dunwoody, GA and surrounding areas

Approved

In business since 1975

Free estimates

Emergency services offered

"We just had a full HVAC system installed by Ace & A, and couldn't be happier. Every step of the process was excellent from the initial repair call and scheduling, working with sales on a new system consult and the system installation experience. Because we were without air conditioning, they worked hard to get us in and scheduled a Saturday. We appreciated the professionalism, courteousness and, the number of years' experience -knowledge all of the people we encountered. We highly recommend Ace & A."
APCO-X for Effective COVID-19 Filtration
Owner - Sam West Sr.
General Manager-Rick Coggins
Just a few of the Ace & A Fleet.
Two of our newest Service Vans

+4

Response time7 hrs
Response rate88%
19 neighbors recently requested a quote
Comfort Solutions Heating & Cooling, LLC
4.7(
514
)

Serving Dunwoody, GA and surrounding areas

Approved

In business since 2009

Free estimates

Credit card accepted

"The technician diagnosed the problem and determined the capacitor was deflected. He replaced the capacitor and explained the purpose of the electrical part. I was extremely impressed with his knowledge of solving my problem. My only concern was that I thought the replacement of the part was exorbitant consisting the online prices of a capacitor for my air conditioning system."
2 Brand New Rheem AC Systems
Old AC Systems
Response time11 hrs
10 neighbors recently requested a quote
Recommended by99%of homeowners
Avatar for Cool Air Mechanical LLC
Cool Air Mechanical LLC
4.7(
278
)

Serving Dunwoody, GA and surrounding areas

Approved (Corporate)

In business since 2011

Emergency services offered

Credit card accepted

"Great. Jerry Cobb came by to reprogram the thermostat for us. We were not able to figure out how to get it the way we wanted and Jerry took care of it for us. Cool Air replaced our entire HVAC system about 2 years ago. We were happy with the job and will be having them add a humidifier to the system soon."
Cool Air Mechanical Techs preparing for a day's work serving customers!
Filter Change
Cool Air Mechanical's Service Team
Loading filters in the trucks. We ensure our trucks are stocked and we have equipment and tools on hand to best serve you!
Cool Air tech headed to a job!

+35

84 neighbors recently requested a quote
Recommended by94%of homeowners
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FAQs for air conditioning projects in Dunwoody, GA

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 Dunwoody, GA homeowners’ guide to air conditioning services

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