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

Brody Pennell Heating & Air Conditioning
New to Angi
Geothermal Heating or Cooling System - Install

Serving Topanga, CA and surrounding areas

Approved

In business since 1945

Free estimates

Credit card accepted

In 1999, Pennell Air Conditioning and Brody Heating & Air Conditioning, both in West Los Angeles, merged and became Brody Pennell. Jack Pennell began serving Los Angeles area homeowners in 1945. Today, we carry on that great legacy of outstanding customer service as we continue to serve the next generation of our clientele. Our rapid response fleet is ready to serve you 24/7, when you need us the most. Our friendly technicians are knowledgeable and helpful, and we can fix most any problem you have. We look forward to adding you to the Brody Pennell family.

46 neighbors recently requested a quote
Avatar for Southland Heating and Air Conditioning
Southland Heating and Air Conditioning
4.7(
160
)
Geothermal Heating or Cooling System - Install

Serving Topanga, CA and surrounding areas

In business since 1997

Free estimates

Emergency services offered

"Albert was very polite, helpful and showed me some easier ways to maintain my system. He also offered suggestions on how to best utilize the 2 systems we have to best advantage. I was notified when he would arrive (along with a photo), then an update (as he was early), and work was completed in a timely, efficient manner. I would definitely use Southland Heating again!"
This is the outdoor unit that offers 17 SEER Hyper efficiency and super quiet operation of 54db's compared to 80 plus on older units
notice the low profile, this is about 14 inch wide instead of the traditional 36 wide.
This replaces your old gas heater
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+37

Response time1 day
Response rate100%
Recommended by93%of homeowners
Avatar for Water Heaters Only, Inc
Water Heaters Only, Inc
4.7(
440
)
Geothermal Heating or Cooling System - Install

Serving Topanga, CA and surrounding areas

In business since 1968

Free estimates

Emergency services offered

"Setting up the appointment was easy. They offered to come out the next day but I needed to wait until Friday, my day off. Mike showed up on time. Did a good professional job removing and installing a new 50 gallon water heater. Mike also tested my water pressure and noted it was too high. For an agreed upon small additional charge he replaced my pressure regulator and a shut off valve."
Our technician Fabian getting ready to drain a water heater.
A newly installed 40 gallon residential water heater.
A tankless water heater installed in a garage.
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+2

Recommended by94%of homeowners
Avatar for Mirsky Heating & Air Conditioning
Mirsky Heating & Air Conditioning
4.9(
134
)
Geothermal Heating or Cooling System - Install

Serving Topanga, CA and surrounding areas

In business since 1998

Free estimates

Emergency services offered

"The BEST phone call I have made this year for a service needed in my home was to Mirsky Heating and AIr. I called in the middle of a So. Cal heatwave because my thermostat had stopped working and I needed to replace it. How often does an AC company, in the middle of a heatwave, tell you they can come the same day? NEVER!! Except for Mirsky..Darrow told me that he would try to make it work..and he did...which I will be forever grateful!!! He checked in with me during the day to assure me that he was coming and not to leave work until he was more clear on the time he would be at my home. He showed up with another Mirsky employee named John..they were both super friendly and so helpful. Darrow found the problem and within 45 minutes, the thermostat was replaced and everything was up and running again. I can't say enough how grateful I am to Darrow and Mirsky Heating and Air...I am giving their contact info to all of my friends and will be calling them again for anything heating AC related."
CEO & INSTALLER
CRANE
Rheem Puron System
Crane placing unit
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+15

Recommended by100%of homeowners
Avatar for Hermes heating and cooling
Hermes heating and cooling
5.0(
9
)
Geothermal Heating or Cooling System - Install

Serving Topanga, CA and surrounding areas

In business since 2019

Free estimates

"Hi fellows this company is very professional and they install 5 ton unit in my property I am very happy and I will hired again and also they are very honest because on one of my properties the thermostat was bad and couple of other companies told me I have replace the unit but these guys they charge the thermostat and solve the problem I highly recommend this company for all your havc need god bless you"
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+34

Recommended by100%of homeowners
Avatar for NRG Heating & Air Conditioning, Inc
NRG Heating & Air Conditioning, Inc
4.2(
161
)
Geothermal Heating or Cooling System - Install

Serving Topanga, CA and surrounding areas

In business since 1987

Free estimates

Credit card accepted

"Lost our heat on a very cold late afternoon. Called 3 places. NRG was the only company that returned our call. Sent someone within an hour. Determined that our 28 year old unit needed to be replaced. Benjamin spent at least and hour on the phone to order the new unit and arranged to have it installed the next day, Thanks to all involved. Curtious, punctual, and professional."
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+27

Recommended by84%of homeowners
Avatar for DNA Heating & Cooling, Inc.
DNA Heating & Cooling, Inc.
5.0(
13
)
Geothermal Heating or Cooling System - Install

Serving Topanga, CA and surrounding areas

In business since 2016

Free estimates

Emergency services offered

"We had no heat, and we had other companies come out and they said we had to replace our system. DNA heating and cooling came out and recommended we replace our system, but did offer other options. We opted to repair versus replace for the time being and the system has worked thus far. We would highly recommend this company as they were gloves, masks and booties over there shoes. The technician was extremely thorough with the unit, and he was able to communicate with me so I was able to understand and make an informed decision. When it comes time to replace our system we will definitely be using this company they have our business for life."
Heating & A/C Project
Package unit upgrade
New indoor unit
Recessed lighting
Package unit upgrade

+27

Recommended by100%of homeowners
Avatar for Precision Auto Works
Precision Auto Works
4.8(
43
)
Geothermal Heating or Cooling System - Install

Serving Topanga, CA and surrounding areas

In business since 1994

Credit card accepted

"I needed an oil change done on my Mercedes. Dave the owner made sure he had all the right spec fluids for my car when I go there. Connie the friendly receptionist was friendl and efficient.. I was in and out quick all fluids topped off, and potential problems brought to my attention, no sales pitch just good old fashioned honest people. We'll do business with them again. Highly Recommended
"
Recommended by92%of homeowners
Avatar for Aeris Heating & Air Conditioning
Aeris Heating & Air Conditioning
4.8(
18
)
Geothermal Heating or Cooling System - Install

Serving Topanga, CA and surrounding areas

In business since 2000

Free estimates

Emergency services offered

"The first and foremost reason I selected Aeris Heating and Air Conditioning to do the complete overhaul of my house' heating and cooling system with relocation was their professionally written estimate. It was quite detailed and comprehensive, a far cry from those of other bidders. Secondly, because of Arian G. who to make the story short recommended the addition of new supply and return vents to improve ventilation. He insists on having the HERS test and city inspection even if it would cost me $600 more to insure that things were done up to standards. The reason for the 3-star review is the behavior of their work crew. They came down seemingly unprepared. They did not have long enough ladder to get them to the roof so I had to let them use mine. They used my crowbar without asking. I could not communicate very well with the foreman. At the end of the day, they did not clean up their litters of bottles, wrappers and masks around the house. Despite all these, will I still recommend them to others? Maybe, but only after warning them about their work crew."
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+28

Recommended by100%of homeowners
Avatar for North Air
North Air
4.5(
24
)
Geothermal Heating or Cooling System - Install

Serving Topanga, CA and surrounding areas

In business since 1994

Emergency services offered

Credit card accepted

"Our central a/c unit stopped working yesterday evening in 100 degree heat. I immediately called Vigen (at 7:10PM on a Friday btw) and he picked up and squeezed us in the next day. He came today (8/29/15) and had us up and running again in 30 minutes. The starter needed to be replaced. We are so very grateful. Vigen and his guys at North Air really know their stuff. They're punctual, courteous, fair, and do great work.
Two years ago, our central a/c unit was rattling terribly on the roof. We called a few different companies for estimates and liked Vigen's the best. All of the estimates cited similar issues with the install we had done in 2009. The a/c unit was not properly attached to the house...it wasn't draining right...also there were problems with how the furnace was installed in the attic...and I don't remember any more details two years later. What I remember is that the unit was no longer rattling on the roof and suddenly the house was getting much cooler, much faster, much more quietly. 
We also really like the mini-split unit that North Air installed in the garage. It works great and is virtually silent. We will continue to use North Air for all our HVAC needs. It's a relief to know we have a dependable company to call when things get way to hot or way too cold....
"
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Recommended by86%of homeowners
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