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TRUSTED BY DORAVILLE, GA HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon116
    Verified heating oil services reviews

Find Heating oil pros in Doraville

Avatar for Dayco Systems LLC

Dayco Systems LLC

4.98(
166
)
Approved Pro

Dayco Systems LLC

4.98(
166
)
Approved Pro
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
2006 years of experience

Dayco Systems is your trusted local expert for residential HVAC, plumbing, and blown-in attic insulation services across the Greater Metro Atlanta area. Family-owned and operated since 2006, we?re known for our honest service, skilled technicians, and long-standing commitment to comfort and quality. Our licensed and highly trained team specializes in HVAC system replacements, AC and heating repairs, smart thermostats, indoor air quality improvements, water heater installs, leak repairs, and seasonal maintenance. We also offer free attic insulation inspections to help homeowners improve energy efficiency and comfort year-round. What makes us stand out? We treat every home like it?s our own?showing up on time, communicating clearly, and standing behind our work. We?re proud to be a Trane, Daikin, and Goodman dealer, and honored to be voted Best of Cobb for 7 consecutive years and Best of Georgia in 2024.

"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."

Michael K on July 2025

Dayco Systems is your trusted local expert for residential HVAC, plumbing, and blown-in attic insulation services across the Greater Metro Atlanta area. Family-owned and operated since 2006, we?re known for our honest service, skilled technicians, and long-standing commitment to comfort and quality. Our licensed and highly trained team specializes in HVAC system replacements, AC and heating repairs, smart thermostats, indoor air quality improvements, water heater installs, leak repairs, and seasonal maintenance. We also offer free attic insulation inspections to help homeowners improve energy efficiency and comfort year-round. What makes us stand out? We treat every home like it?s our own?showing up on time, communicating clearly, and standing behind our work. We?re proud to be a Trane, Daikin, and Goodman dealer, and honored to be voted Best of Cobb for 7 consecutive years and Best of Georgia in 2024.

"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."

Michael K on July 2025


"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

4.77(
1,326
)
Approved Pro

Coolray Heating & Air Conditioning

4.77(
1,326
)
Approved Pro
Super Service Award
Customers say: Super punctual
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
1966 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.

"Did a great job on annual HVAC maintenance. Waylon Coley is an excellent HVAC tech."

Douglas I on November 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.

"Did a great job on annual HVAC maintenance. Waylon Coley is an excellent HVAC tech."

Douglas I on November 2025


Avatar for Triad Mechanical Company Inc

Triad Mechanical Company Inc

4.84(
185
)
Approved Pro

Triad Mechanical Company Inc

4.84(
185
)
Approved Pro
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
1991 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 Hill HVAC, LLC

Hill HVAC, LLC

4.96(
53
)
Approved Pro

Hill HVAC, LLC

4.96(
53
)
Approved Pro
Customers say: Quick response
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
2018 years of experience

Hill HVAC is an owner operated repair and maintenance service. I am intent on getting your system fixed and earning your business. No nonsense or up selling. 15 yrs experience commercial and residential installation and troubleshooting. Call me directly 7702415023 anytime for estimates or advice.

"He fix the wiring and was helpful."

L F on December 2023

Hill HVAC is an owner operated repair and maintenance service. I am intent on getting your system fixed and earning your business. No nonsense or up selling. 15 yrs experience commercial and residential installation and troubleshooting. Call me directly 7702415023 anytime for estimates or advice.

"He fix the wiring and was helpful."

L F on December 2023


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


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
2009 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
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 Guardian Heating and Air, Inc.

Guardian Heating and Air, Inc.

4.76(
119
)
Approved Pro

Guardian Heating and Air, Inc.

4.76(
119
)
Approved Pro
Super Service Award
Customers say: True professional
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
2019 years of experience

At Guardian we are committed to each and every customer by offering one solution to your home service needs- heating, air, plumbing & electrical! Voted Best HVAC Company 2024 in Atlanta, 4 years running! You can be assured that our customers are our top priority. With over 20 years of experience, Guardian 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 until each customer is satisfied. Our aggressive pricing, Free Service Call fees with repairs over $250, and expert level technicians have allowed Guardian to be a homeowner's go to home service company in metro Atlanta.

"They came out and did the job quickly and efficiently"

Jim T on April 2025

At Guardian we are committed to each and every customer by offering one solution to your home service needs- heating, air, plumbing & electrical! Voted Best HVAC Company 2024 in Atlanta, 4 years running! You can be assured that our customers are our top priority. With over 20 years of experience, Guardian 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 until each customer is satisfied. Our aggressive pricing, Free Service Call fees with repairs over $250, and expert level technicians have allowed Guardian to be a homeowner's go to home service company in metro Atlanta.

"They came out and did the job quickly and efficiently"

Jim T on April 2025


"OUTSTANDING Contractor - would use again"

Anthony D on December 2024

Providing on-demand gutter cleaning services for any size house! Also providing FEMA grade tarping services for damaged roofs and structures! Call NOW! 678.956.0028 ask for Levi

"OUTSTANDING Contractor - would use again"

Anthony D on December 2024

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Heating Oil questions, answered by experts

An evaporator or swamp cooler is a common alternative for small spaces. These coolers blow moist air into a space to help cool it down. They are more affordable than misters and use much less water. However, coolers will not have the same cooling effect as misters, cannot help plants survive the heat, and only reach a small area.

Leaks, poor airflow, reduced efficiency, and loop blockages are common problems requiring service.

DIY maintenance like filter cleaning is possible, but professional servicing ensures proper pressure, refrigerant levels, and loop performance.

Yes, including optimizing settings and suggesting upgrades if needed.

Yes, geothermal heat pumps are worth the money. You can save about 70% on heating costs in the winter and around 50% on cooling costs in the summer with a geothermal heat pump compared to a traditional HVAC system. Over time, your savings on monthly utilities will pay for the cost of the geothermal heat pump installation. If you have an incredibly small yard, however, you may not have enough space for this type of system.

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