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.

Top-Rated Geothermal heating or cooling system installers in Seattle - Updated Nov 2026

Avatar for Greenwood Heating and Home Services
Greenwood Heating and Home Services
4.6(
425
)
Geothermal Heating or Cooling System - Install

Serving Seattle, WA and surrounding areas

Approved

In business since 1921

Emergency services offered

Warranties offered

"We had an install from Greenwood in our new home and it is amazing! The staff was so kind and cleaned everything up, and the AC and heat works great. This is a company I would highly recommend!"
Signature Install
Greenwood Plumbing
Greenwood Fleet
Greenwood University
Response time11 hrs
Response rate100%
16 neighbors recently requested a quote
Avatar for Air Masters Inc
Air Masters Inc
4.6(
181
)
Geothermal Heating or Cooling System - Install

Serving Seattle, WA and surrounding areas

Approved

In business since 1986

Free estimates

Emergency services offered

"Completely removed old heating system and installed new heat pump system in 2 days. Customer rep followed up with an installation verification and provided system details. All work was professional quality and technicians were very courteous and professional."
Installation of Ductless Heat Pump AC System
Gas Furnace Installation
Another Happy Air Masters Heating and Cooling Client with their new Lennox Heat Pump System
Another Happy Air Masters Heating and Cooling Client with their new Lennox Heat Pump System
Furnace System Installation.  Call Air Masters Heating & Cooling for your next HVAC upgrade or replacement.

+46

Response time2 days
Response rate100%
8 neighbors recently requested a quote
Avatar for Evergreen Home Heating & Energy
Evergreen Home Heating & Energy
4.4(
106
)
Geothermal Heating or Cooling System - Install

Serving Seattle, WA and surrounding areas

Approved

In business since 1975

Free estimates

Emergency services offered

"The entire process went very smooth. From the initial call to final install, everyone was pleasant to work with. The Comfort Advisor, Scott, put my mind at ease with all my questions and concerns. I got the quote shortly after the assessment, accepted and was scheduled for install very quickly after. The install team was very communicative during the process. They all came in and worked together to get the job done in a short amount of time and left the area looking better than when they arrived. Everything has been working great and I couldn't be happier with my heat pump. I would not hesitate to recommend them to anyone I know."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+9

Response time5 hrs
Response rate100%
2 neighbors recently requested a quote
Avatar for Day & Nite Plumbing & Heating, Inc.
Day & Nite Plumbing & Heating, Inc.
4.3(
225
)
Geothermal Heating or Cooling System - Install

Serving Seattle, WA and surrounding areas

Approved

In business since 1954

Emergency services offered

Warranties offered

"I purchased a new Navien NPE-240A2 Tankless Water Heater and had it installed. I'm loving the new water heater. It replaces an old Noritz tankless that died just before this installation. The on-site estimate was what sold me. Ken went through all the details and answered a lot of questions from me. Zachary came out with Austin and performed the installation just like I discussed with Ken. Zachary kept me in the loop throughout the installation to ensure I was in agreement with how it was going. Zachary always had my interest at heart and ensured no corners were cut. The installation is much cleaner, and more correct than the previous tankless company did. Zachary even listened to my concern about the astectics of the exterior exhaust and quickly found an easier and cleaner looking way to address my concern. He also removed an old recirculation pump and replaced a new main house shutoff valve. The entire area was treated respectfully and left cleaner than they found it."
Outdoor Ductless Unit
Indoor Ductless Unit
Outdoor Ductless lineset and Unit
Pump System
2 neighbors recently requested a quote
Recommended by82%of homeowners
Avatar for THE JANES COMPANY, INC.
THE JANES COMPANY, INC.
5.0(
6
)
Geothermal Heating or Cooling System - Install

Serving Seattle, WA and surrounding areas

Approved

In business since 1990

Free estimates

Warranties offered

Janes Radiant Heating is family-owned and specializes in high-efficiency radiant heating systems across Western Washington. We provide emergency boiler repair services for households throughout the Puget Sound area, the Islands, and the Peninsula. With over 35 years of experience and 20,000 installations under our belt, you can trust that our radiant heating experts will work hard to get your system up and running again. \n\nWe are the state's first and largest major installer of radiant floor heat systems. Whether you need an installation in a new or remodeled home, or an upgrade to an existing system in your current home, we bring unmatched knowledge, craftsmanship, and commitment to every project.\n\nOur showroom and warehouses are located in Mukilteo, WA, and our team of factory-trained, specialized technicians is stationed throughout our service area, with the most common parts on their trucks. Our friendly service team is here, ready to take care of you!

Boiler installation
Bellingham Boiler Upgrade
23 neighbors recently requested a quote
Avatar for Blue Flame Heating and Air Conditioning
Blue Flame Heating and Air Conditioning
4.6(
840
)
Geothermal Heating or Cooling System - Install

Serving Seattle, WA and surrounding areas

In business since 1994

Free estimates

Emergency services offered

"Not smoothly. We selected Blue Flame because they were cheaper than Greenwood Heating & Air, and they could do the work immediately, while Greenwood had a waitlist several weeks long (should have been a clue). If I had to summarize the experience I would say communication was poor, requiring me to project manage the replacement more than I wanted to. Half the time you tried to call the office, they wouldn't pick up and you were passed onto an answering service who would ask you a list of generic questions like "Where did you hear about Blue Flame" and "Are you interested in purchasing a system?"... I've already purchased a system that I'm trying to finish having installed!!! The actual instillation took longer than they predicted, and while I appreciated the workers staying late into the night to work on the project, they didn't come prepared with all the equipment to do the work. They needed to borrow my extension cord because they didn't have one, and ended up plugging into the outlet in our backyard without asking, leaving our yard gate wide open. Fortunately our dog didn't escape before the open gate was noticed several hours later. They also helped themselves to items from our garage without asking, like our broom to sweep up their trash and debris. Lastly, and possibly most serious, the workers who were installing the system in our house were constantly pulling down their Covid masks when they thought we weren't around, and would scramble to pull them back up when they saw us. Bottom line, I probably got a good price on the unit and work, but it's not a very polished or professional company, so fingers crossed that everything was installed properly and will work for years to come."
High-efficiency natural gas furnace installation
Recommended by91%of homeowners
Avatar for AAA Heating & Air Conditioning
AAA Heating & Air Conditioning
4.8(
237
)
Geothermal Heating or Cooling System - Install

Serving Seattle, WA and surrounding areas

In business since 1989

Free estimates

Emergency services offered

"I have used AAA Heating and Cooling for many years. Colby has come out to my house on a number of occasions. He is always on time, friendly and professional. He is informative but doesn't try to sell me things I don't need."
Additional Photos
Additional Photos
Additional Photos
Our Service Center
Response time1 day
5 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for CARDINAL HEATING & AIR CONDITIONING
CARDINAL HEATING & AIR CONDITIONING
4.7(
54
)
Geothermal Heating or Cooling System - Install

Serving Seattle, WA and surrounding areas

In business since 1991

Free estimates

Emergency services offered

"The work was flawless. Estimator arrived on time, was knowledgeable, performed heat loss calculation to ensure new unit was sized properly, prepared estimates for 3 different options. Work was scheduled and completed within days of signing the estimate. Technicians called to give me status on their arrival, worked fast and efficiently, were professional and clean. Great communications. They found a clever way to install the venting without damaging ceiling in adjacent room. The surrounding area was spotless after they left.



Couldn't ask for a better experience. Highly recommended.
"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+13

Recommended by86%of homeowners
Avatar for SOS Crawl Space Insulation
SOS Crawl Space Insulation
4.8(
77
)
Geothermal Heating or Cooling System - Install

Serving Seattle, WA and surrounding areas

In business since 2011

Emergency services offered

" We recently bought this house in December and quickly discovered we had a rodent problem. The house had sat empty for about 9 months and is in the woods so it made since to us. We first hired a pest company to come out and access the situtation. They set traps in the crawl space and attic and caught some mice and rats. We saw alot of damage that had been caused by the rodents living in the insulation so we decided to get bids from some insulation companies on repairing or replacing the damage. 
Daniel came out a couple of days later on a Saturday. I was so impressed that he brought a camera with him to take pictures. He went down into the crawl space to access the situation. His photos confirmed the damage to the insulation from the mice nesting in it. Daniel really understood the rodent problem because he use to work for a pest company and understood their nature and knew where to look for entry holes. He said if entry holes are not sealed, you will continue to have rodent problems. Lucky for us, Daniel seals entry holes and fixes vents and ducts as part of his service so you are truly covering all bases when you hire him. He is a wealth of information and also explained why he waits over night after sanatizing  before installing new insulation.The smells are removed and the mice will no longer be attracted to the space anymore. We had another company that sanitized tell us they could do all the work in a day and I'm so happy we didn't choose them. We also had a company say it was ok to put new insulation over our old insulation and I'm glad we didn't hire them either. When Daniel told me he sucked more rats out of the attic with the old insulation, I knew we had made the right decision to hire SOS and just have all the old insulation removed and replaced with new product. If you have high ceilings(12'-14') like us, I would highly recommend  R-49 insulation.   
 Daniel and his crew are hard workers and take pride in their work. They will invite you down or up in our case to take a look at their work. They are very polite, professional, tidy and truly want you to be happy with their work. I noticed a big difference right away so although insulating was an unexpected expense, it was worth it and I am really looking forward to a lower propane bill next month. I will be recommending SOS and would hire them again. Daniel and his crew are deserving of an A+++++++++++ rating and we wish them much success. Please hire SOS Insulation, you won't be disappointed:)
"
hard workers
after
after
Recommended by100%of homeowners
...
Showing 1-10 of 87

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.