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TRUSTED BY DULUTH, GA HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon1.1k+
    Verified heating and air conditioning services reviews

Find Heating and air conditioning pros in Duluth

"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 Coolray Heating & Air Conditioning

Coolray Heating & Air Conditioning

4.82(
1,233
)
Approved Pro

Coolray Heating & Air Conditioning

4.82(
1,233
)
Approved Pro
Super Service Award
Customers say: Super punctual
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
59 years of experience

Coolray has served the Atlanta metro area since 1966 and offers professional heating, air conditioning, plumbing and electrical. We base our business principles on people helping people with honest, dependable service backed by our peace of mind warranties and guarantees ensuring your 100% satisfaction. 350 employees. No subs. Charges a flat rate. Senior Discount on Service Repairs only, cannot be used with other offers.

"Great service! Stan was prompt, professional, friendly and very knowledgable."

Randy M on December 2025

Coolray has served the Atlanta metro area since 1966 and offers professional heating, air conditioning, plumbing and electrical. We base our business principles on people helping people with honest, dependable service backed by our peace of mind warranties and guarantees ensuring your 100% satisfaction. 350 employees. No subs. Charges a flat rate. Senior Discount on Service Repairs only, cannot be used with other offers.

"Great service! Stan was prompt, professional, friendly and very knowledgable."

Randy M on December 2025


Avatar for Triad Mechanical Company Inc

Triad Mechanical Company Inc

4.86(
180
)
Approved Pro

Triad Mechanical Company Inc

4.86(
180
)
Approved Pro
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
34 years of experience

While many heating and air companies have come and gone, we have maintained an impeccable reputation since 1991, which we have accomplished through hard work and unparalleled customer service. We pride ourselves on punctuality, courtesy to our customers and their families, and a rock solid guarantee on all the work we perform. This family-owned and -operated HVAC service has responded promptly to calls in the Greater Metro Atlanta area for more than 20 years, offering the best value from certified technicians. While many heating and air companies have come and gone, we have maintained an impeccable reputation, which we have accomplished through hard work and unparalleled customer service. We pride ourselves on punctuality, courtesy to our customers and their families, and a rock solid guarantee on all the work we perform. Additional Counties Served: Oglethorpe, Walton, Gwinnett, Rockdale, & Portions of Dekalb, & Fulton. Additional phone - (770) 400-9084.

"No findings, no solution, no explanation… collected the fee… the issue is still there. I had Triad Mechanical Company for our HVAC issue that the outdoor unit is not running. I told Paul, the assigned technician, that we had tried resetting the power to the outdoor unit but that only brought the unit back on running for a few days before it stopped running again. I asked Paul’s help diagnose the issue for the root cause. However, when I came to the property just a few minutes later than Paul, he told me that he had done his work already, well, by simply resetting the power to the unit! (although I told him that we already tried that but it didn’t work!)… He didn’t have the patience to explain to me what diagnosis he had done (within that a few minutes) and he didn’t even bother to come off his truck to show me but saying “go ask your tenant”. He collected the fee and left. I will never trust nor use Triad Mechanical Company again!"

James H on April 2024

While many heating and air companies have come and gone, we have maintained an impeccable reputation since 1991, which we have accomplished through hard work and unparalleled customer service. We pride ourselves on punctuality, courtesy to our customers and their families, and a rock solid guarantee on all the work we perform. This family-owned and -operated HVAC service has responded promptly to calls in the Greater Metro Atlanta area for more than 20 years, offering the best value from certified technicians. While many heating and air companies have come and gone, we have maintained an impeccable reputation, which we have accomplished through hard work and unparalleled customer service. We pride ourselves on punctuality, courtesy to our customers and their families, and a rock solid guarantee on all the work we perform. Additional Counties Served: Oglethorpe, Walton, Gwinnett, Rockdale, & Portions of Dekalb, & Fulton. Additional phone - (770) 400-9084.

"No findings, no solution, no explanation… collected the fee… the issue is still there. I had Triad Mechanical Company for our HVAC issue that the outdoor unit is not running. I told Paul, the assigned technician, that we had tried resetting the power to the outdoor unit but that only brought the unit back on running for a few days before it stopped running again. I asked Paul’s help diagnose the issue for the root cause. However, when I came to the property just a few minutes later than Paul, he told me that he had done his work already, well, by simply resetting the power to the unit! (although I told him that we already tried that but it didn’t work!)… He didn’t have the patience to explain to me what diagnosis he had done (within that a few minutes) and he didn’t even bother to come off his truck to show me but saying “go ask your tenant”. He collected the fee and left. I will never trust nor use Triad Mechanical Company again!"

James H on April 2024


Avatar for R Wiley Heating & Air

R Wiley Heating & Air

4.72(
994
)
Approved Pro

R Wiley Heating & Air

4.72(
994
)
Approved Pro
Customers say: Super punctual
39 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


Comfort Solutions Heating & Cooling, LLC

4.82(
465
)
Approved Pro

Comfort Solutions Heating & Cooling, LLC

4.82(
465
)
Approved Pro
Customers say: Quick response
Recommended by 99% of Angi customers
Recommended by 99% of HomeAdvisor customers
16 years of experience

When you call Comfort Solutions Heating & Cooling, LLC. for your heating and air conditioning needs, you'll get the same customer friendly service that Metro Atlanta and the surrounding areas have come to expect. We want your business and we do everything we can to make it easy for you to do business with us. We have undergone rigorous training and are focused on providing you with service that's dependable, quick and courteous. Our satisfaction guarantee is simple and we won't quit until you're satisfied, guaranteed.

"Great job!"

Janet D on June 2024

When you call Comfort Solutions Heating & Cooling, LLC. for your heating and air conditioning needs, you'll get the same customer friendly service that Metro Atlanta and the surrounding areas have come to expect. We want your business and we do everything we can to make it easy for you to do business with us. We have undergone rigorous training and are focused on providing you with service that's dependable, quick and courteous. Our satisfaction guarantee is simple and we won't quit until you're satisfied, guaranteed.

"Great job!"

Janet D on June 2024


Avatar for Cool Air Mechanical LLC

Cool Air Mechanical LLC

4.78(
258
)
Approved Pro

Cool Air Mechanical LLC

4.78(
258
)
Approved Pro
Customers say: Super punctual
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
14 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


All Seasons Heating and Air

4.92(
84
)
Approved Pro

All Seasons Heating and Air

4.92(
84
)
Approved Pro
Super Service Award
Customers say: True professional
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
47 years of experience

Dependable, quality workmanship, satisfaction guaranteed. We return all calls promptly. We offer free estimates (new or replacement systems only) and reasonable pricing at all times. All Seasons Heating and Air Conditioning is a locally owned and family run business and we are fully licensed. References are available on request.

"They responded to our distress call quickly, scheduled the visit and were punctual enough to show up in the time slot they mentioned. Despite a bit of an inconvenience with the accessibility to our AC units, Brant ensured that him and his technician provided us with the service they promised. Would definitely recommend him."

Monil S on July 2025

Dependable, quality workmanship, satisfaction guaranteed. We return all calls promptly. We offer free estimates (new or replacement systems only) and reasonable pricing at all times. All Seasons Heating and Air Conditioning is a locally owned and family run business and we are fully licensed. References are available on request.

"They responded to our distress call quickly, scheduled the visit and were punctual enough to show up in the time slot they mentioned. Despite a bit of an inconvenience with the accessibility to our AC units, Brant ensured that him and his technician provided us with the service they promised. Would definitely recommend him."

Monil S on July 2025


Avatar for Casteel Heating, Cooling, Plumbing & Electrical

Casteel Heating, Cooling, Plumbing & Electrical

4.78(
87
)
Approved Pro

Casteel Heating, Cooling, Plumbing & Electrical

4.78(
87
)
Approved Pro
Customers say: Super punctual
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
38 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

"Good job. Will hire again"

GV I on December 2025

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

"Good job. Will hire again"

GV I on December 2025


Avatar for Able Service Company

Able Service Company

4.83(
143
)
Approved Pro

Able Service Company

4.83(
143
)
Approved Pro
Customers say: Quick response
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
41 years of experience

A family owned and operated company who opened our doors in 1984. Over these passing years many homeowners have found a home with us. That's because we focus on giving our customers a level of service that exceeds what we would expect for our own homes. It's part of what we call "Delivering Comfort Your Way". Whether you require a simple heating & air conditioning repair or a full HVAC replacement, Able Service Company is available 24/7. Our certified professionals are licensed to perform repairs, service & maintenance on all makes and models. You can always count on upfront written estimates and our 100% satisfaction guarantee.

"Great job, prompt, friendly and reliable people, they replace the AC unit in my in-laws in no time. I would hire them again in a hart bit. Thanks Rita, thanks Alex and thanks to everybody at Able Service."

Enrique C on September 2020

A family owned and operated company who opened our doors in 1984. Over these passing years many homeowners have found a home with us. That's because we focus on giving our customers a level of service that exceeds what we would expect for our own homes. It's part of what we call "Delivering Comfort Your Way". Whether you require a simple heating & air conditioning repair or a full HVAC replacement, Able Service Company is available 24/7. Our certified professionals are licensed to perform repairs, service & maintenance on all makes and models. You can always count on upfront written estimates and our 100% satisfaction guarantee.

"Great job, prompt, friendly and reliable people, they replace the AC unit in my in-laws in no time. I would hire them again in a hart bit. Thanks Rita, thanks Alex and thanks to everybody at Able Service."

Enrique C on September 2020


Avatar for Chuck Home Repair and Renovation

Chuck Home Repair and Renovation

4.85(
46
)
Approved Pro

Chuck Home Repair and Renovation

4.85(
46
)
Approved Pro
Super Service Award
Customers say: Super punctual
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
3 years of experience

We have the experience and dedication to bring your dreams to reality! We guarantee your satisfaction, and we won’t leave until the job is done right. Our team has quality experience in this industry, and we make sure our customers are happy before we leave. Call or click to schedule an estimate today!

"Rafael did an awesome job of assembling my new console. He was in time, courteous and left the work area neat and clean. We intend to hire him for other projects. I highly recommend him "

Meredith F on October 2025

We have the experience and dedication to bring your dreams to reality! We guarantee your satisfaction, and we won’t leave until the job is done right. Our team has quality experience in this industry, and we make sure our customers are happy before we leave. Call or click to schedule an estimate today!

"Rafael did an awesome job of assembling my new console. He was in time, courteous and left the work area neat and clean. We intend to hire him for other projects. I highly recommend him "

Meredith F on October 2025

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Heating and Air Conditioning questions, answered by experts

Freon circulates through your AC unit in a closed loop, so ideally, all of it should remain inside your system and never need to be replaced. However, if your AC starts leaking Freon (which is common), you’ll need to top it up. Known as an AC recharge, the cost of adding refrigerant to your air conditioner depends on the size and type of the AC unit, as well as the type of refrigerant.

Fall and spring are the best times of year to purchase an air conditioner, furnace, or other HVAC components. In fact, by shopping during these periods, you could save 10% to 15% on an AC unit. For HVAC professionals, spring and fall are less busy than summer and winter, when extreme temperatures create an urgent demand for heating and cooling.

Turning off your AC may temporarily stop your unit from leaking water unless the leak is from a thawing coil that continues to thaw after the system is shut off. Regardless, it helps to discontinue use of the unit if it has a leak in order to figure out what’s causing the issue.

One of the fastest ways to unfreeze an AC unit is to turn off the unit and, if it’s warm outside, use the fan-only mode to help blow warmer air through the unit to speed up the defrosting process. While it may be tempting to use a hair dryer to defrost the air conditioner, that high heat can damage the coils.

After defrosting, if you can safely solve the issue with a fix like changing the filter, go ahead and do so. Otherwise, call in a pro before turning your AC back on.

There are several tell-tale signs that your AC coils need cleaning, including:

  • You’re getting higher electricity bills.

  • Your home doesn’t feel as cool as it usually does.

  • Your AC unit is running longer than usual to cool your home.

  • Your home is more humid than usual.

  • The coil is covered in frost while running.

The Duluth, 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.

What do you need done? We’ll find top pros.
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