Top-rated geothermal heating or cooling system installers.

Get matched with top geothermal heating or cooling system installers in Seattle, WA

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Geothermal heating or cooling system installers in Seattle

Avatar for Arden Heating & Cooling

Arden Heating & Cooling

42316 264th Avenue Southeast
4.20(
5
)
Approved Pro

Arden Heating & Cooling

42316 264th Avenue Southeast
4.20(
5
)
Approved Pro
763 local quotes requested
Free onsite estimate

At Arden Heating & Cooling we specialize in the sales, installation, and repair of residential heating and air conditioning systems. Including Gas furnaces, Heat pumps, Ductless units, A/C, and Water Heaters. We are an owner operated business that has over 15 years in the HVAC trade. We take pride in the quality of our work and our ability to stay reasonably priced compared to others. We want to make you as comfortable in your home as possible. Here at Arden Heating & Cooling we offer free estimates and discounts for new systems, existing system upgrades, and maintenance plans. All of our work includes a manufacturers warranty and a 5yr labor warranty on any of the work that we do. Look forward to doing business with you.

"A prompt and thorough response, unlike simply informing me that there was nothing they could do, they actively researched the warranty on my current system (expired and void due to builder installation) before discussing a replacement option. I was then presented with several options, each accompanied by a quote. When asked, they recommended that I opt for a more economical quote that better suited my usage and requirements. I highly recommend this company. They were punctual and worked diligently, even during the peak summer months in the hottest room in my house (the attic). I will certainly recommend them to any of my friends and will utilize their services for any future needs related to air conditioning or furnace repair, as well as routine maintenance."

Chris P on November 2024

At Arden Heating & Cooling we specialize in the sales, installation, and repair of residential heating and air conditioning systems. Including Gas furnaces, Heat pumps, Ductless units, A/C, and Water Heaters. We are an owner operated business that has over 15 years in the HVAC trade. We take pride in the quality of our work and our ability to stay reasonably priced compared to others. We want to make you as comfortable in your home as possible. Here at Arden Heating & Cooling we offer free estimates and discounts for new systems, existing system upgrades, and maintenance plans. All of our work includes a manufacturers warranty and a 5yr labor warranty on any of the work that we do. Look forward to doing business with you.

"A prompt and thorough response, unlike simply informing me that there was nothing they could do, they actively researched the warranty on my current system (expired and void due to builder installation) before discussing a replacement option. I was then presented with several options, each accompanied by a quote. When asked, they recommended that I opt for a more economical quote that better suited my usage and requirements. I highly recommend this company. They were punctual and worked diligently, even during the peak summer months in the hottest room in my house (the attic). I will certainly recommend them to any of my friends and will utilize their services for any future needs related to air conditioning or furnace repair, as well as routine maintenance."

Chris P on November 2024


Avatar for Seatown Electric Plumbing Heating & Air

Seatown Electric Plumbing Heating & Air

4200 78th St SW
4.80(
1,336
)
Approved Pro

Seatown Electric Plumbing Heating & Air

4200 78th St SW
4.80(
1,336
)
Approved Pro
Customers say: Super punctual
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
4852 local quotes requested

As a provider of essential services here in the Puget Sound Region, Seatown Electric Plumbing Heating & Air remains open to serve you. To ensure the safety of our customers our technicians' health is monitored closely and we are following the highest safety recommendations, including the use of masks and protective gloves. The health and wellness of our customers and employees will always come first. We are here for you! Seatown provides Electrical, Plumbing, Heating, and A/C services in the Greater Puget Sound region, concentrating in King and Snohomish county. With our customer satisfaction guarantee, you can rest assured that your system will outlast industry standards, providing safety, and comfort for your home, for many years to come. You will never have to search for a new electrical, plumbing or heating and air contractor again. That is our promise. Seatown continues to lead Angie's List, with overall "A" reviews, by serving one customer at a time and giving top-notch service. We hope to build long-lasting customer relationships, throughout Washington State. Our world-class technicians will show up to your door in clean uniforms, with visible ID and state certification, trained to over-exceed your expectations, and never leaving a mess behind. We are Seatown Electric Plumbing Heating And Air, Washington's all in one contractor.

"We have been living with a 60amp service and Knob and Tube wiring for 37 years. We called Seatown Electric Plumbing Heating and Air,to upgrade our service to200 amps and to replace our Knob and Tube wiring. They promptly sent Matt R, Journeyman Electrician, out to give us an estimate. He was very professional and we walked through the house room by room as he explained what needed to be done to meet code, and asked us what new outlets or features we might want to add in each room. We went from attic to crawl space. Then he sat down with us and walked us through what might have to be done to complete the Job. At which point he ended by giving us a firm estimate of cost and what we would need to do to prepare the house. We made the decision to have them do the work and they put us on the schedule. On the scheduled date Thomas F, and Thomas L arrived along with Matt R. They walked us through the project and told us they had been allotted 5 days to complete the project; on our two story house. They stayed on schedule and actually didn't need a complete day on the fifth day. Thomas F and Thomas L worked tirelessly each day and cleaned up after themselves before leaving each day all this during high 80's temperatures during the day. They took time from their work to answer any and all of our questions as they worked, and at the end of the day showed us what they had completed. All of their work was done with meticulous care given to quality, and journeyman standards to meet and exceed code. I would recommend these two electricians for any electrical project and especially those that may be on the more complicated level. They did our entire house including the installation of a new mast and meter base along with the knew 200 amp breaker box. Thank you Thomas F and Thomas L! Complicating their work was our little granddaughter. She was with us during the whole project and they took extra care to assure her safety and well being. Thomas F even brought her a toy Dinosaur which immediately became her favorite toy. If that were not enough he found out it was my birthday and brought me gift of his personally crafted art work as a present. What a great company and Great People. In this case the aphorism “you get what you pay for” is true. Seatown is worth every dollar."

John W on August 2020

As a provider of essential services here in the Puget Sound Region, Seatown Electric Plumbing Heating & Air remains open to serve you. To ensure the safety of our customers our technicians' health is monitored closely and we are following the highest safety recommendations, including the use of masks and protective gloves. The health and wellness of our customers and employees will always come first. We are here for you! Seatown provides Electrical, Plumbing, Heating, and A/C services in the Greater Puget Sound region, concentrating in King and Snohomish county. With our customer satisfaction guarantee, you can rest assured that your system will outlast industry standards, providing safety, and comfort for your home, for many years to come. You will never have to search for a new electrical, plumbing or heating and air contractor again. That is our promise. Seatown continues to lead Angie's List, with overall "A" reviews, by serving one customer at a time and giving top-notch service. We hope to build long-lasting customer relationships, throughout Washington State. Our world-class technicians will show up to your door in clean uniforms, with visible ID and state certification, trained to over-exceed your expectations, and never leaving a mess behind. We are Seatown Electric Plumbing Heating And Air, Washington's all in one contractor.

"We have been living with a 60amp service and Knob and Tube wiring for 37 years. We called Seatown Electric Plumbing Heating and Air,to upgrade our service to200 amps and to replace our Knob and Tube wiring. They promptly sent Matt R, Journeyman Electrician, out to give us an estimate. He was very professional and we walked through the house room by room as he explained what needed to be done to meet code, and asked us what new outlets or features we might want to add in each room. We went from attic to crawl space. Then he sat down with us and walked us through what might have to be done to complete the Job. At which point he ended by giving us a firm estimate of cost and what we would need to do to prepare the house. We made the decision to have them do the work and they put us on the schedule. On the scheduled date Thomas F, and Thomas L arrived along with Matt R. They walked us through the project and told us they had been allotted 5 days to complete the project; on our two story house. They stayed on schedule and actually didn't need a complete day on the fifth day. Thomas F and Thomas L worked tirelessly each day and cleaned up after themselves before leaving each day all this during high 80's temperatures during the day. They took time from their work to answer any and all of our questions as they worked, and at the end of the day showed us what they had completed. All of their work was done with meticulous care given to quality, and journeyman standards to meet and exceed code. I would recommend these two electricians for any electrical project and especially those that may be on the more complicated level. They did our entire house including the installation of a new mast and meter base along with the knew 200 amp breaker box. Thank you Thomas F and Thomas L! Complicating their work was our little granddaughter. She was with us during the whole project and they took extra care to assure her safety and well being. Thomas F even brought her a toy Dinosaur which immediately became her favorite toy. If that were not enough he found out it was my birthday and brought me gift of his personally crafted art work as a present. What a great company and Great People. In this case the aphorism “you get what you pay for” is true. Seatown is worth every dollar."

John W on August 2020


Ares Comfort Systems

New on HomeAdvisorNew on HomeAdvisor
Approved Pro

Ares Comfort Systems

New on HomeAdvisorNew on HomeAdvisor
Approved Pro
412 local quotes requested
1 years of experience

Family owned business with over 20 plus years experience. Heating & A/C -

Family owned business with over 20 plus years experience. Heating & A/C -


Avatar for AAA Heating & Air Conditioning

AAA Heating & Air Conditioning

22641 83rd Ave S
4.81(
227
)
Approved Pro

AAA Heating & Air Conditioning

22641 83rd Ave S
4.81(
227
)
Approved Pro
Customers say: True professional
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
580 local quotes requested

We’ve Got Experience On Our Side! Our technicians have top level training and are EPA certified. It doesn’t get any better than that. You can bank on our technical expertise to solve just about any problem. We’ve heard and seen it all. Award winning. Additional DBA - AAA Heating & AC Inc. Financing AOC.

"Aside from a hiccup around scheduling some ancillary repairs the quoted price was reasonable and the work was done to spec."

Brandon N on January 2025

We’ve Got Experience On Our Side! Our technicians have top level training and are EPA certified. It doesn’t get any better than that. You can bank on our technical expertise to solve just about any problem. We’ve heard and seen it all. Award winning. Additional DBA - AAA Heating & AC Inc. Financing AOC.

"Aside from a hiccup around scheduling some ancillary repairs the quoted price was reasonable and the work was done to spec."

Brandon N on January 2025


Avatar for PMG Mechanical Inc

PMG Mechanical Inc

15600 NE 8th St
4.29(
17
)
Approved Pro

PMG Mechanical Inc

15600 NE 8th St
4.29(
17
)
Approved Pro
Customers say: Quick response
556 local quotes requested
32 years of experience

PMG Mechanical has been servicing the greater King County and surrounding areas since 1993. With over 32 years of heating and cooling experience, you can rely on us to keep your heating and cooling systems running at peak performance. We are a Carrier Factory Authorized Dealer but work on all brands of equipment. We also offer Bradford White, A.O. Smith, Navien, and Rinnai for both tanked and tankless water heaters. If you're looking to add or replace units in your home, give us a call. We offer a complimentary heating and cooling consultation of your home to ensure that all of your comfort needs are met!

"Joseph was very professional and everything was done efficiently and was finished faster than I had anticipated! Would use him again if needed!"

Candice I on February 2025

PMG Mechanical has been servicing the greater King County and surrounding areas since 1993. With over 32 years of heating and cooling experience, you can rely on us to keep your heating and cooling systems running at peak performance. We are a Carrier Factory Authorized Dealer but work on all brands of equipment. We also offer Bradford White, A.O. Smith, Navien, and Rinnai for both tanked and tankless water heaters. If you're looking to add or replace units in your home, give us a call. We offer a complimentary heating and cooling consultation of your home to ensure that all of your comfort needs are met!

"Joseph was very professional and everything was done efficiently and was finished faster than I had anticipated! Would use him again if needed!"

Candice I on February 2025


Avatar for Affordable Heating & Air Conditioning Inc.

Affordable Heating & Air Conditioning Inc.

13331 47th Avenue Southeast
4.57(
7
)
Approved Pro

Affordable Heating & Air Conditioning Inc.

13331 47th Avenue Southeast
4.57(
7
)
Approved Pro
Customers say: Quick response
698 local quotes requested
2 years of experience

Affordable Heating has been serving the greater Seattle area since 2009. Since our inception, we have been dedicated to providing exceptional service, top-quality products, and unparalleled expertise to homeowners and businesses across the region. With a commitment to excellence and a passion for customer satisfaction, we have earned a reputation as a leading HVAC service provider in the area. We specialize in new construction homes, accessory dwelling units (ADU), water heaters, and replacing or adding to existing systems like furnaces and air conditioners. We are a Mitsubishi Diamond Dealer which has best-in-class performance across all categories.

"Very responsive and honest. Quality work. Thank you!"

Sydney P on June 2024

Affordable Heating has been serving the greater Seattle area since 2009. Since our inception, we have been dedicated to providing exceptional service, top-quality products, and unparalleled expertise to homeowners and businesses across the region. With a commitment to excellence and a passion for customer satisfaction, we have earned a reputation as a leading HVAC service provider in the area. We specialize in new construction homes, accessory dwelling units (ADU), water heaters, and replacing or adding to existing systems like furnaces and air conditioners. We are a Mitsubishi Diamond Dealer which has best-in-class performance across all categories.

"Very responsive and honest. Quality work. Thank you!"

Sydney P on June 2024


Avatar for Blue Flame Heating and Air Conditioning

Blue Flame Heating and Air Conditioning

7116 220th St SW
4.61(
812
)
Approved Pro

Blue Flame Heating and Air Conditioning

7116 220th St SW
4.61(
812
)
Approved Pro
Customers say: Super punctual
826 local quotes requested
31 years of experience

As COVID-19 continues to impact the global community, we at Blue Flame want to update you on the steps we have taken to ensure the safety of our employees and customers, please visit our website at www.blueflamecomfort.com for a detailed statement. Blue Flame Comfort specializes in residential install, service as well as maintenance with a 100% satisfaction guarantee. Ask us about tankless water heaters, high-efficiency furnaces, and heat pumps! Our office and standard hours are listed but our dedicated team of background-checked and thoroughly trained technicians are ready and willing to assist you 24 hours a day, 7 days a week for emergency services.

"A tech "Graham" came out for an annual maintenance visit on a reliable 15 year old York Furnace with a 20 year guarantee on the heat exchanger which Blue Flame installed in 2010. He could not explain why he was here, and when I told him "routine annual maintenance" he said, "Let's see what we can find". That was the first sign we had opposite agendas. It went south from there. After lots of loud grinding noises, he supposedly found a shiny jagged gash which he showed me on a scope. I am extremely suspicious he created it himself with a power tool. The end result was the furnace was no longer usable and cost me $8K to have them replace. To add insult to injury that guy ruined my screen door, which won't close anymore. I have ended my 15 year relationship with this company, since I no longer trust them."

Dai M on June 2025

As COVID-19 continues to impact the global community, we at Blue Flame want to update you on the steps we have taken to ensure the safety of our employees and customers, please visit our website at www.blueflamecomfort.com for a detailed statement. Blue Flame Comfort specializes in residential install, service as well as maintenance with a 100% satisfaction guarantee. Ask us about tankless water heaters, high-efficiency furnaces, and heat pumps! Our office and standard hours are listed but our dedicated team of background-checked and thoroughly trained technicians are ready and willing to assist you 24 hours a day, 7 days a week for emergency services.

"A tech "Graham" came out for an annual maintenance visit on a reliable 15 year old York Furnace with a 20 year guarantee on the heat exchanger which Blue Flame installed in 2010. He could not explain why he was here, and when I told him "routine annual maintenance" he said, "Let's see what we can find". That was the first sign we had opposite agendas. It went south from there. After lots of loud grinding noises, he supposedly found a shiny jagged gash which he showed me on a scope. I am extremely suspicious he created it himself with a power tool. The end result was the furnace was no longer usable and cost me $8K to have them replace. To add insult to injury that guy ruined my screen door, which won't close anymore. I have ended my 15 year relationship with this company, since I no longer trust them."

Dai M on June 2025


Avatar for Dadz Electrical Service LLC

Dadz Electrical Service LLC

5.00(
1
)
Approved Pro

Dadz Electrical Service LLC

5.00(
1
)
Approved Pro
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
1132 local quotes requested

We are a small local electrical outfit focused on quality installation and great customer care. We are happy to be of service in our community!

"Excellent! Hiring again and again . Best company and service."

Barbara A on July 2024

We are a small local electrical outfit focused on quality installation and great customer care. We are happy to be of service in our community!

"Excellent! Hiring again and again . Best company and service."

Barbara A on July 2024


Avatar for Day & Nite Plumbing & Heating, Inc.

Day & Nite Plumbing & Heating, Inc.

16614 13th Ave W
4.30(
214
)
Approved Pro

Day & Nite Plumbing & Heating, Inc.

16614 13th Ave W
4.30(
214
)
Approved Pro
Customers say: Super punctual
815 local quotes requested
71 years of experience

Your local Family owned & operated Plumbing, Heating, and Cooling Company since 1954. OUR MISSION: "Dedicated to providing the highest quality, most professional services for your home and business with unsurpassed Value, Innovation, and Integrity." As a Factory Authorized Bryant Dealer, we are proud to offer the latest in innovation and technology when it comes to to comfort in your home. Not only do we work on all brands of Furnaces, A/C, Heat Pumps, & Boilers we also can design the best solution for your home and family when it comes time to replace your equipment. Our Plumbing division is just as innovative. From simple repairs to complete repipes. We also offer the latest in technology when it comes to designing the best solution for the needs of your home. With weekly training weather its a repair, drain cleaning, tankless water heater or replacing a water line without digging a trench our technicians are prepared to offer the right solution. Check us out at the Better Business Bureau and visit our website at www.dayandnite.net.

"Very expensive and overprice, just to change an Outdoor Garden Faucet that cost $32 at Home Depot, I paid $694.99, this is what you call HIGHWAY ROBBERY."

Bert C on June 2025

Your local Family owned & operated Plumbing, Heating, and Cooling Company since 1954. OUR MISSION: "Dedicated to providing the highest quality, most professional services for your home and business with unsurpassed Value, Innovation, and Integrity." As a Factory Authorized Bryant Dealer, we are proud to offer the latest in innovation and technology when it comes to to comfort in your home. Not only do we work on all brands of Furnaces, A/C, Heat Pumps, & Boilers we also can design the best solution for your home and family when it comes time to replace your equipment. Our Plumbing division is just as innovative. From simple repairs to complete repipes. We also offer the latest in technology when it comes to designing the best solution for the needs of your home. With weekly training weather its a repair, drain cleaning, tankless water heater or replacing a water line without digging a trench our technicians are prepared to offer the right solution. Check us out at the Better Business Bureau and visit our website at www.dayandnite.net.

"Very expensive and overprice, just to change an Outdoor Garden Faucet that cost $32 at Home Depot, I paid $694.99, this is what you call HIGHWAY ROBBERY."

Bert C on June 2025


Avatar for Evergreen Home Heating & Energy

Evergreen Home Heating & Energy

727 S Kenyon St
4.59(
97
)
Approved Pro

Evergreen Home Heating & Energy

727 S Kenyon St
4.59(
97
)
Approved Pro
Customers say: Super punctual
575 local quotes requested
50 years of experience

For 45 years we’ve been making Puget Sound homes the most healthy, energy efficient and comfortable homes in the country. Our experienced team brings decades of expertise installing and maintaining the most innovative and efficient technology. As a Mitsibushi Cooling and Heating Diamond Contractor, Evergreen Home Heating and Energy has some of the world's most efficient and innovative products available.

"We had Evergreen Home Heating and Energy install a new water heater and furnace, and unfortunately, the quality of their work has been disappointing. Recently, I noticed several issues with the intake and exhaust pipes. Several hanger straps attached to the wall are broken, and one of the joints on the water heater exhaust pipe is leaking water. I suspect this leak is caused by the imbalance due to the broken hanger straps. I expected a professional and reliable installation from Evergreen Home Heating and Energy, but these problems indicate a lack of attention to detail and quality. Based on my experience, I cannot recommend Evergreen Home Heating and Energy. If you’re considering them for your home needs, be cautious and perhaps look elsewhere."

Gao Z on June 2024

For 45 years we’ve been making Puget Sound homes the most healthy, energy efficient and comfortable homes in the country. Our experienced team brings decades of expertise installing and maintaining the most innovative and efficient technology. As a Mitsibushi Cooling and Heating Diamond Contractor, Evergreen Home Heating and Energy has some of the world's most efficient and innovative products available.

"We had Evergreen Home Heating and Energy install a new water heater and furnace, and unfortunately, the quality of their work has been disappointing. Recently, I noticed several issues with the intake and exhaust pipes. Several hanger straps attached to the wall are broken, and one of the joints on the water heater exhaust pipe is leaking water. I suspect this leak is caused by the imbalance due to the broken hanger straps. I expected a professional and reliable installation from Evergreen Home Heating and Energy, but these problems indicate a lack of attention to detail and quality. Based on my experience, I cannot recommend Evergreen Home Heating and Energy. If you’re considering them for your home needs, be cautious and perhaps look elsewhere."

Gao Z on June 2024

...
Showing 1-10 of 958

The Seattle, WA homeowners’ guide to geothermal heating or cooling system installations

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

  • Solar panel on the roof of a home

    HomeAdvisor's Solar Panel Price Guide gives the average home solar system and panel prices. Explore solar panel pricing per watt or square foot.

  • solar panels on roof in suburban neighborhood

    HomeAdvisor’s Virginia solar panel cost guide digs into the average cost of solar panels in Virginia and cost factors around the state. Find prices and pros for your solar project.

  • Solar panel system on single roof

    HomeAdvisor’s Solar Panel Cost Guide for Pennsylvania covers project costs in Philadelphia and Pittsburgh. Use this guide to find solar panel costs for PA.

  • A house with installed solar panels on the roof

    HomeAdvisor's guide to the cost of solar panels in Texas explores solar panel cost by type and location. Find out how much you'll pay to install solar panels on your Texas property.

  • Solar panels on shingle roof of Florida house

    HomeAdvisor's Guide to the Cost of Solar Panels in Florida explores solar panel costs by type and location. Find out how much you'll pay to install solar panels on your Florida property.

  • Solar panels on a flat roof of a mediterranean house

    HomeAdvisor’s Solar Panel Cost Guide looks at the average cost of solar panels in Arizona. Find out how much solar panels cost in your city.