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

Avatar for Diamond Heating and Air
Diamond Heating and Air
4.8(
120
)
Geothermal Heating or Cooling System - Install

Serving Pilot Hill, CA and surrounding areas

In business since 1990

Free estimates

Credit card accepted

"Air conditioning in one zone stopped working over very hot weekend.  Called three companies to get a quote on possibly replacing both zones before I spent money on repairing a 17+ year old unit.
Diamond was the first company with availability.  Before they came over to give a quote, Bob called to ask me a few questions about the nature of the problem.  He speculated over the phone of what the problem might be and what the cost of fixing it would be.
He arrived for the appointment at the appointed time and proceeded immediately to fix the unit while talking to me about an estimate to replace both zones (2 systems).  He spent extra time hunting down an electrical connection issue in the unit and when done, checked out the flow readings of the system.
$258 dollars fixed the problem.  Since I had scheduled him for a quote, he offered to remove the new part that he had just installed or I could leave it in and if I decided to buy a new system, they would credit the repair of this unit back against it.  I elected to have him leave the fix in place.
Bob quoted me an exceptionally good price per unit for a quality Lennox system.  In fact a competitor who came the following day said that he wanted to see a copy of a written quote because Diamond's price was too good.
Although I've decided for the time being to not replace both systems, I would select Diamond Heating and Air in a second!
"
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Recommended by96%of homeowners
Avatar for Service Champions Heating & Air Conditioning
Service Champions Heating & Air Conditioning
4.6(
688
)
Geothermal Heating or Cooling System - Install

Serving Pilot Hill, CA and surrounding areas

In business since 2003

Free estimates

Emergency services offered

"Our Service Tech, Alex Peck, arrived on time to perform the annual check up & tune-up of our HVAC System. He was very professional and following the Tune-Up asked if there was any other items that needed done or looked into that he could take care of. His services were very much appreciated and very professional. Lee"
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+42

Response time9 hrs
Response rate100%
Recommended by91%of homeowners
Avatar for Ray O Cook Heating & Air
Ray O Cook Heating & Air
4.7(
243
)
Geothermal Heating or Cooling System - Install

Serving Pilot Hill, CA and surrounding areas

In business since 1947

Free estimates

Emergency services offered

"Our experience with Ray O. Cook went very well!! Our HVAC system was the original when the house was built over 40 years ago. My husband's excellent Do it Yourself skills allowed him to maintain it and keep it running all these years. We received estimates from 5 different companies. Although the other salesman/estimators were good, Paul was the best. He explained all our options more thoroughly than the others and his recommendations for installing the HVAC system for our needs and house size made the most sense. The price was very reasonable and fair. The installers, Willy and Rick T were awesome. They both worked professionally and took the time to answer any questions either one of us had with the install process. They also did an excellent cleanup job. Erick, the install manager was very knowledgeable and helpful. The insulation was put in by Sierra Wes, a company Ray O Cook contracts with and they did a great job also. Lastly, the Ray O. Cook logo of a flaming O is super cool!!!"
Recommended by94%of homeowners
Avatar for COMFORT SOLUTIONS INC
COMFORT SOLUTIONS INC
5.0(
6
)
Geothermal Heating or Cooling System - Install

Serving Pilot Hill, CA and surrounding areas

In business since 2016

Free estimates

Emergency services offered

"Excellent! Dawn was so helpful and scheduled my visit for the very next day! The tech diagnosed the problem and fixed it. What an awesome company! When I remodel and put in enteral air and heat this will be the company I use. So very happy with Comfort Solutions!"
Recommended by100%of homeowners
Avatar for The Hot Spot - Year Round Fireside
The Hot Spot - Year Round Fireside
4.5(
79
)
Geothermal Heating or Cooling System - Install

Serving Pilot Hill, CA and surrounding areas

In business since 2000

Free estimates

Credit card accepted

"I purchased the deal thinking that the fireplace would then be able to provide heat for my house. After talking to the very helpful staff at The Hot Spot, this deal does not provide any extra heat. The type of insert I need is about $3,000 and not currently in the budget. I am requesting a refund within my 30 day guarantee from Angie's list."
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Recommended by94%of homeowners
Avatar for BON Heating & Cooling
BON Heating & Cooling
5.0(
10
)
Geothermal Heating or Cooling System - Install

Serving Pilot Hill, CA and surrounding areas

In business since 2011

Free estimates

Emergency services offered

"Bon was very helpful and luckily had an opening for my HVAC unit during a crazy heat wave when all of the other big companies flaked on me or didn't have openings for weeks. My unit wasn't pumping out cool air and it was 90 degrees in my house during the heat wave. His prices and services were very reasonable. He gave me a free estimate by checking my vents and my unit. Luckily I just ran out of refrigerant and he was able to refill it when he found out I had very low levels. He noticed the builders who installed the unit was lazy and didn't waterproof the wiring correctly so he found a pool of water collecting in the sleeve holding the wires. He waterproofed it for a cheap price. Thank you for saving the day Bon!"
Horizontal condenser
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+11

Recommended by100%of homeowners
Avatar for Csc Plumbing Sewer and Drain Service | Chapmans Legacy Plumbing
Csc Plumbing Sewer and Drain Service | Chapmans Legacy Plumbing
4.6(
136
)
Geothermal Heating or Cooling System - Install

Serving Pilot Hill, CA and surrounding areas

In business since 2005

Free estimates

Emergency services offered

"Mr. Chapman fixed a leak under the sink and installed a new kitchen faucet for me. I had tried to fix the drip myself and ended up doing something wrong causing the cold water to have no "off" function and the on to spray water full blast. I was able to use the stop valve to prevent flooding, but Mr. Chapman kindly worked me into today's schedule. I had bought a new faucet, so the price above reflects labor only and I also used a coupon here from Angie's list. The original quote was $155.00, but with the coupon it was $116.00. Mr. Chapman was professional, patient with my questions, kind (for not lecturing me on my attempt at DYI) and the cost was reasonable for the work performed (even without the coupon). I'd highly recommend this company to anyone needing plumbing work. 
"
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Recommended by96%of homeowners
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