Top-rated heating and air conditioning pros.

Get matched with top heating and air conditioning pros in Decatur, GA

There are 34 highly-rated local heating and air conditioning pros.

TRUSTED BY DECATUR, GA HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon739
    Verified heating and air conditioning services reviews

Find Heating and air conditioning pros in Decatur

"I recently had an electrical inspection done by TE Certified Electrical, Plumbing, Heating & Cooling, and I couldn’t be more impressed. From the moment the technician arrived, the experience was professional, thorough, and reassuring. They took the time to explain everything they found in a way that was easy to understand, and I felt confident I was in good hands. What stood out most was their attention to detail—they didn’t just check the basics, they inspected the entire system to ensure my home was safe and up to code. No high-pressure sales, just honest advice and helpful recommendations. I’ll absolutely be using TE Certified again and would highly recommend them to anyone looking for top-tier electrical service."

BRIAN S on June 2025

TE Certified Electrical, Plumbing, Heating & Cooling is a customer-focused residential service company. We fix & replace electrical, plumbing, and HVAC systems for Greater Atlanta homeowners. Please call our office to schedule your appointment today. 770-667-6937

"I recently had an electrical inspection done by TE Certified Electrical, Plumbing, Heating & Cooling, and I couldn’t be more impressed. From the moment the technician arrived, the experience was professional, thorough, and reassuring. They took the time to explain everything they found in a way that was easy to understand, and I felt confident I was in good hands. What stood out most was their attention to detail—they didn’t just check the basics, they inspected the entire system to ensure my home was safe and up to code. No high-pressure sales, just honest advice and helpful recommendations. I’ll absolutely be using TE Certified again and would highly recommend them to anyone looking for top-tier electrical service."

BRIAN S on June 2025


Avatar for R Wiley Heating & Air

R Wiley Heating & Air

4.68(
1,045
)
Approved Pro

R Wiley Heating & Air

4.68(
1,045
)
Approved Pro
Customers say: Super punctual
1986 years of experience
Free onsite estimate

Super Service Award Winner for 2024-2013 | HVAC Contractor | Owner Operated by Robby Wiley | We are a local Heating and Air Conditioning company in the metro Atlanta and surrounding areas. We offer FREE ESTIMATES on installations only and financing options including 18 months same as cash on all equipment and 60 months same as cash for certain equipment. We provide services to residential and small commercial customers. I have been in the industry for 30 years and enjoy helping my customers maintain their equipment and overcome issues with their equipment. I will work with you and offer recommendations based on your needs. I will make myself available to answer questions you may have without requiring a service call, again I enjoy what I do.

"Good."

Brent L on April 2025

Super Service Award Winner for 2024-2013 | HVAC Contractor | Owner Operated by Robby Wiley | We are a local Heating and Air Conditioning company in the metro Atlanta and surrounding areas. We offer FREE ESTIMATES on installations only and financing options including 18 months same as cash on all equipment and 60 months same as cash for certain equipment. We provide services to residential and small commercial customers. I have been in the industry for 30 years and enjoy helping my customers maintain their equipment and overcome issues with their equipment. I will work with you and offer recommendations based on your needs. I will make myself available to answer questions you may have without requiring a service call, again I enjoy what I do.

"Good."

Brent L on April 2025


Avatar for Cool Air Mechanical LLC

Cool Air Mechanical LLC

4.75(
267
)
Approved Pro

Cool Air Mechanical LLC

4.75(
267
)
Approved Pro
Customers say: Super punctual
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
2011 years of experience

For years, Cool Air Mechanical has been an expert provider of heating, cooling, plumbing, indoor air quality, generators and electrical services throughout the greater Atlanta region. If you find that it is time to have a new heating or cooling system installed in your home, or if you need someone to take over maintenance for you HVAC system in Atlanta, call us today and learn more about our full range of services. Each of our technicians is chosen based on their ability to provide the utmost in service to each of the customers they visit and they are prepared for nearly any issue that could arise. If you are interested in getting more out of your heating and cooling systems in Atlanta or the surrounding area, give us a call today. Additional website: www.770coolair.com

"Cool Air Mechanical LLC delivered exceptional service with our water heater installation! From the moment we scheduled the appointment, their team was professional, punctual, and incredibly knowledgeable. They assessed our needs thoroughly and guided us to the perfect unit for our home. Installation was seamless—efficient, clean, and done with care. We appreciated the technicians’ attention to detail and their willingness to explain everything clearly. What truly stood out was their commitment to customer satisfaction. They even followed up to ensure everything was running perfectly! It’s rare to find a company that combines technical expertise with genuine courtesy. Highly recommend Cool Air Mechanical for anyone in need of top-notch HVAC or plumbing services. They’ve earned our trust and future business!"

Carli S on July 2025

For years, Cool Air Mechanical has been an expert provider of heating, cooling, plumbing, indoor air quality, generators and electrical services throughout the greater Atlanta region. If you find that it is time to have a new heating or cooling system installed in your home, or if you need someone to take over maintenance for you HVAC system in Atlanta, call us today and learn more about our full range of services. Each of our technicians is chosen based on their ability to provide the utmost in service to each of the customers they visit and they are prepared for nearly any issue that could arise. If you are interested in getting more out of your heating and cooling systems in Atlanta or the surrounding area, give us a call today. Additional website: www.770coolair.com

"Cool Air Mechanical LLC delivered exceptional service with our water heater installation! From the moment we scheduled the appointment, their team was professional, punctual, and incredibly knowledgeable. They assessed our needs thoroughly and guided us to the perfect unit for our home. Installation was seamless—efficient, clean, and done with care. We appreciated the technicians’ attention to detail and their willingness to explain everything clearly. What truly stood out was their commitment to customer satisfaction. They even followed up to ensure everything was running perfectly! It’s rare to find a company that combines technical expertise with genuine courtesy. Highly recommend Cool Air Mechanical for anyone in need of top-notch HVAC or plumbing services. They’ve earned our trust and future business!"

Carli S on July 2025


Avatar for Casteel Heating, Cooling, Plumbing & Electrical

Casteel Heating, Cooling, Plumbing & Electrical

4.74(
88
)
Approved Pro

Casteel Heating, Cooling, Plumbing & Electrical

4.74(
88
)
Approved Pro
Customers say: Super punctual
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
1987 years of experience

At Casteel Heating, Cooling, Plumbing and Electrical, we provide world-class service to our customers, just as we have since 1987. Founded by Jan and Bob Casteel, our company was built on honesty and customer-focused care. To this day, we offer our Amazing Care Guarantee: We’ll take amazing care of you or we’ll refund your service call fee. Our expert team of plumbers, electricians, HVAC technicians, and system design managers performs top-quality repairs and installations while ensuring you are completely satisfied with your entire customer service. Because we offer so many services under one roof, you’ll save time and money by making one phone call to Casteel. Formerly: Knight Air Conditioning and Heating Company

"Thumbs up for the construction at my residence, a three story elevator shaft"

Diana D on October 2024

At Casteel Heating, Cooling, Plumbing and Electrical, we provide world-class service to our customers, just as we have since 1987. Founded by Jan and Bob Casteel, our company was built on honesty and customer-focused care. To this day, we offer our Amazing Care Guarantee: We’ll take amazing care of you or we’ll refund your service call fee. Our expert team of plumbers, electricians, HVAC technicians, and system design managers performs top-quality repairs and installations while ensuring you are completely satisfied with your entire customer service. Because we offer so many services under one roof, you’ll save time and money by making one phone call to Casteel. Formerly: Knight Air Conditioning and Heating Company

"Thumbs up for the construction at my residence, a three story elevator shaft"

Diana D on October 2024


Avatar for Keep Smiling Plumbing & Electric

Keep Smiling Plumbing & Electric

4.66(
133
)
Approved Pro

Keep Smiling Plumbing & Electric

4.66(
133
)
Approved Pro
Customers say: Super punctual
1985 years of experience
Free onsite estimate

Keep Smiling Plumbing Electric Heating and Cooling is a family-owned, family-operated, full-service plumbing electric and HVAC business, serving Gwinnett County, Georgia. We are Master Plumbers and members of the Plumbing & Mechanical Association of Georgia. Keep Smiling Plumbing & Electric is there when you need us, ready to take care of any problem that you may have with your plumbing or electrical systems. We also have available a full line of quality replacement products if you want to upgrade or update.

"When facing unexpected plumbing issues, Keep Smiling provided truly excellent service. Their Technician was punctual, transparent, and highly skilled."

Dorothea G on November 2025

Keep Smiling Plumbing Electric Heating and Cooling is a family-owned, family-operated, full-service plumbing electric and HVAC business, serving Gwinnett County, Georgia. We are Master Plumbers and members of the Plumbing & Mechanical Association of Georgia. Keep Smiling Plumbing & Electric is there when you need us, ready to take care of any problem that you may have with your plumbing or electrical systems. We also have available a full line of quality replacement products if you want to upgrade or update.

"When facing unexpected plumbing issues, Keep Smiling provided truly excellent service. Their Technician was punctual, transparent, and highly skilled."

Dorothea G on November 2025


Avatar for TE Certified Electrical, Plumbing, Heating & Cooling

TE Certified Electrical, Plumbing, Heating & Cooling

4.54(
13
)
Approved Pro

TE Certified Electrical, Plumbing, Heating & Cooling

4.54(
13
)
Approved Pro
Customers say: Quick response
1998 years of experience
Free onsite estimate

TE Certified Electrical, Plumbing, Heating & Cooling understands there is never a great time to need a home repair. That's why we make scheduling easy, arrive in three-hour arrival windows, drive fully stocked trucks, give flat rate pricing, and back our work with a lifetime workmanship guarantee. Services offered: Residential Electrical, Plumbing, Heating and Cooling - Inspection, Repair, Replacement, Maintenance. Electrical - Rewiring, Outlets, and Switches, Whole House Back-Up Generators, Indoor/Outdoor Lighting, Car Chargers, Surge Protection, Ethernet & Cable Installation. Plumbing - Water Lines, Water Heaters, Tankless Water Heaters, Fixtures and Faucets, Garbage Disposals, Sewer Lines, Pressure Regulators. HVAC - Air Conditioners, Furnaces, Air Handlers, Heat Pumps, Ductless Heaters, Indoor Air Quality

"Knocked it out quick at a great price. Great service."

Matt G on January 2025

TE Certified Electrical, Plumbing, Heating & Cooling understands there is never a great time to need a home repair. That's why we make scheduling easy, arrive in three-hour arrival windows, drive fully stocked trucks, give flat rate pricing, and back our work with a lifetime workmanship guarantee. Services offered: Residential Electrical, Plumbing, Heating and Cooling - Inspection, Repair, Replacement, Maintenance. Electrical - Rewiring, Outlets, and Switches, Whole House Back-Up Generators, Indoor/Outdoor Lighting, Car Chargers, Surge Protection, Ethernet & Cable Installation. Plumbing - Water Lines, Water Heaters, Tankless Water Heaters, Fixtures and Faucets, Garbage Disposals, Sewer Lines, Pressure Regulators. HVAC - Air Conditioners, Furnaces, Air Handlers, Heat Pumps, Ductless Heaters, Indoor Air Quality

"Knocked it out quick at a great price. Great service."

Matt G on January 2025


Avatar for Christian Brothers Mechanical LLC

Christian Brothers Mechanical LLC

4.57(
14
)
Approved Pro

Christian Brothers Mechanical LLC

4.57(
14
)
Approved Pro
Customers say: Quality work
2000 years of experience
Free onsite estimate

Since we opened our doors in 1999, we have become one of the most respected HVAC contractors in the areas we cover. We have built a reputation as a company you can rely on for dependable service and value. Our mission is simple: to establish great lifetime relationships built on the foundation of unsurpassed value, innovation, and honesty. That begins the moment you call, with a courteous greeting and prompt attention to your needs. Our installations are held to the highest standards of the industry and we will make a commitment to you that your satisfaction is first and foremost to us. Along with our residential installations, we also provide custom designs for commercial projects. Whether your project is an office building, church, restaurant or warehouse we can provide you with the right system to fit your needs. Each person in our organization is committed to providing the highest level of customer care and ensuring that your business and family is comfortable and safe. Please call our office 404-607-9900 or contact us through this site to speak with one of our professionals. Also services portions of Clayton County

"They found nothing wrong with it and just changed the filter. They responded quickly, was very respectful, and just wanted to make sure everything was okay. I can't rate them high enough and I would highly recommend them. I would definitely hire them again."

Annie A on September 2021

Since we opened our doors in 1999, we have become one of the most respected HVAC contractors in the areas we cover. We have built a reputation as a company you can rely on for dependable service and value. Our mission is simple: to establish great lifetime relationships built on the foundation of unsurpassed value, innovation, and honesty. That begins the moment you call, with a courteous greeting and prompt attention to your needs. Our installations are held to the highest standards of the industry and we will make a commitment to you that your satisfaction is first and foremost to us. Along with our residential installations, we also provide custom designs for commercial projects. Whether your project is an office building, church, restaurant or warehouse we can provide you with the right system to fit your needs. Each person in our organization is committed to providing the highest level of customer care and ensuring that your business and family is comfortable and safe. Please call our office 404-607-9900 or contact us through this site to speak with one of our professionals. Also services portions of Clayton County

"They found nothing wrong with it and just changed the filter. They responded quickly, was very respectful, and just wanted to make sure everything was okay. I can't rate them high enough and I would highly recommend them. I would definitely hire them again."

Annie A on September 2021


"Vent cleaning of recently purchased house went well. They also found things that house inspector missed such as the duct to one bedroom wasn't even connected and the dryer vented only inside a wall!"

Marsha B on May 2018

Duct Cleaning is our only business! We do quality work at a competitive price.

"Vent cleaning of recently purchased house went well. They also found things that house inspector missed such as the duct to one bedroom wasn't even connected and the dryer vented only inside a wall!"

Marsha B on May 2018


"I am not the homeowner, I rent a duplex. At first I postponed the appointment due to my schedule. When I saw that he was at my landlord's home I asked if he could look over my air conditioner. He checked with the dispatcher and added my appointment on the spot. He was careful, efficient, friendly and certainly seemed to like his work. I am thankful he was able help, and I am glad to help with your company's donation."

Mario B on August 2024

**DONT FORGET TO CHECK OUT OUR SPRING SPECIALS** We are a locally owned and operated heating and air conditioning company. We also offer air duct services and installation and removal of insulation.

"I am not the homeowner, I rent a duplex. At first I postponed the appointment due to my schedule. When I saw that he was at my landlord's home I asked if he could look over my air conditioner. He checked with the dispatcher and added my appointment on the spot. He was careful, efficient, friendly and certainly seemed to like his work. I am thankful he was able help, and I am glad to help with your company's donation."

Mario B on August 2024


"Dan Goss was very thorough. The most comprehensive furnace check we've had. We were very pleased."

Normand L on March 2018

2 EMPLOYEES. NO SUBS. COST DETERMINED BY FLAT RATE. $80 SERVICE TRIP & DIAGNOSTIC FEE (GOOD FOR 1 FULL SEASON). $40 EXTRA CHARGE FOR EMERGENCY SERVICE. LICENSE NUMBER: CR108870.

"Dan Goss was very thorough. The most comprehensive furnace check we've had. We were very pleased."

Normand L on March 2018

...
Showing 1-10 of 959
Heating and Air Conditioning questions, answered by experts

Swamp coolers cost approximately 50 percent less to install than central air conditioners and cost less to run. Operation costs depend on the size of the unit and home, your climate, utility rates in your area, and the system’s efficiency. Swamp coolers use 15 to 35 percent less power than air conditioners.

Yes, it's normal for air conditioners to leak tiny amounts of water due to condensation. Under normal circumstances, all excess moisture travels to the drain pan to be pumped through your system's drain line. You should call a technician to diagnose the issue if you're noticing frequent leaking or pooling. It's also important to investigate if your homeowners insurance can cover water damage.

Indications of an HVAC problem include inconsistent heating or cooling throughout your home, unpredictable temperature changes, or inadequate air flow from vents. Abnormal sounds such as grinding, banging, or hissing, and unpleasant smells like mustiness or burning are also potential warning signs. A rise in energy costs without an increase in usage may also imply decreased efficiency. An HVAC system that frequently cycles on and off or cannot maintain a stable temperature is malfunctioning.

Choosing between a ductless mini-split and central AC depends on your specific needs. Ductless mini-splits are ideal for targeted cooling, providing zoned comfort and energy efficiency. They are perfect for smaller spaces or homes lacking ductwork. In contrast, central AC offers consistent cooling throughout the entire house but requires ductwork and may be less energy-efficient for smaller spaces. 

Consider factors like budget, home size, and cooling preferences to make the right choice. Combining both systems, with a ductless mini-split in specific areas, can also be a viable solution for tailored comfort and overall efficiency.

It's recommended to change HVAC air filters every one to three months. The frequency depends on factors such as filter type, indoor air quality, and whether there are pets or people with allergies in the household. Regular filter changes maintain proper airflow, improve indoor air quality, and ensure efficient HVAC system operation.

The Decatur, GA homeowners’ guide to heating and air conditioning services

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