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Find Air conditioning pros in Marietta

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

Serving Marietta, 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."
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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 Marietta, GA and surrounding areas

Approved

In business since 1995

Free estimates

Emergency services offered

"A giant shoutout to Atlanta Air Authority for coming to our rescue this week. We came home from being out of town on Sunday to a hot house. Our A/C unit was toast. Their quick response and fantastic service had us back up and running with a new unit within 3 days. Canâ t say enough good things about them. Definitely check them out next time you need HVAC service!!"
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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 Marietta, GA and surrounding areas

Approved

In business since 2006

Free estimates

Emergency services offered

"Very detailed explanation of all work to be completed,  costs,  and warranty.    
In and  Out in one day as promised.  
Clean and efficient - all back to original condition after new install! 
Professional team - polite and hard working.
Call back was needed to address 1 issue:  Vent through the roof in attic which was immediately addressed and corrected.   Excellent response to the issue.
"
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+56

44 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Cool Air Mechanical LLC
Cool Air Mechanical LLC
4.7(
278
)

Serving Marietta, GA and surrounding areas

Approved (Corporate)

In business since 2011

Emergency services offered

Credit card accepted

"I am very satisfied with the product and the service provided by Cool Air Mechanical and their technician, Sean Haynes. Sean did an excellent job of installing an air purification system. Sean also performed the annual checkup on my A/C system. I highly recommend Cool Air Mechanical and especially Sean for any air conditioning service."
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
Avatar for TE Certified Electrical, Plumbing, Heating & Cooling
TE Certified Electrical, Plumbing, Heating & Cooling
4.8(
610
)

Serving Marietta, GA and surrounding areas

Approved (Corporate)

In business since 1998

Free estimates

Emergency services offered

"I was extremely impressed by the professionalism of the tech that did the job.  He walked me through all of the steps and got it done in a timely manner.  The part that I liked best is they did not track in dirt or mud and they did not leave a mess when they were finished.  My furnace is still kicking and I was actually able to get a deal on the next tune up.  I would definitely recommend these guys and I will have them back out to my house next time I need something done to my heating and air system.
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Tankless Water Heater!
Daikin FIT Installation!
Turnkey Generator Installation!
Beautiful Light Fixture Installation
Whole-Home Water Filtration System!

+35

76 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Guardian Heating, Air, Plumbing & Electrical
Guardian Heating, Air, Plumbing & Electrical
5.0(
16
)

Serving Marietta, GA and surrounding areas

Approved

In business since 2019

Free estimates

Emergency services offered

30+ Years of Experience! Voted Best HVAC Company 4 years in a row in Atlanta!. Free Service Call Fees with Repairs over $250! Meet or Beat your in hand HVAC Estimate! At Guardian Home Experts, we are committed to each and every customer by offering one solution to your home service needs. With over 30 years of experience, the company was built on providing reasonable and affordable prices, expert technicians, and practices that respect the customer. Our customer's time, money and needs, are placed at top priority . Guardian's solutions are always delivered with honest and upfront practices. At Guardian, we "Save the day with expert service," and guarantee your satisfaction stopping at nothing making sure your service is worthy of a positive review and your referrals. At Guardian- Quality Work, Quick Service at an Exceptional Value is Guaranteed!

Your Guardian Experts
Free HVAC Estimates
Tankless Water Heater Repair, Maintenance and Installation
Fully Stocked Trucks
Heater Tune Up

+27

26 neighbors recently requested a quote
Recommended by93%of homeowners
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FAQs for air conditioning projects in Marietta, 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 Marietta, GA homeowners’ guide to air conditioning services

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