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

Avatar for HD MECHANICAL INC
HD MECHANICAL INC
4.9(
32
)
Geothermal Heating or Cooling System - Install

Serving Rosemead, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Free estimates

Emergency services offered

"I booked online and got same day services-that’s an A++ for me and Chris the technician was on time-He came from the OC to Palmdale-Within the hour of arrival he help fix our AC issues-For the service and traveling fee and parts the balance fee was not so bad-Was Totally worth it to have our AC working again in this heat-Thanks HD Mechanicals Inc for the great fast service"
Heating & A/C Project
Heating & A/C Project
Heating & A/C Project
Heating & A/C Project
Additional Photos

+14

Response time6 hrs
Response rate100%
62 neighbors recently requested a quote
Avatar for Alpine Plumbing, Heating, and Air
Alpine Plumbing, Heating, and Air
4.7(
36
)
Geothermal Heating or Cooling System - Install

Serving Rosemead, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2014

Free estimates

Emergency services offered

"He was thorough, knowledgeful, listened to my concerns, respectful and got the job done quickly and efficiently with my plumbing problem. I would recommend Alpine Heating, plumbing and electrical services to anyone...and do recommend them."
Plumbing - Drain Cleaning Project
Sewer cleaned of roots and ready for lining
Prepping pipe for lining by removing massive roots
Mixing resin for liners, this resin gardens to create a solid pipe
Sewer robot in the pipe

+26

Response time9 hrs
10 neighbors recently requested a quote
Recommended by67%of homeowners
Brody Pennell Heating & Air Conditioning
New to Angi
Geothermal Heating or Cooling System - Install

Serving Rosemead, 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.

44 neighbors recently requested a quote
Avatar for CAL CLIMATE CORP
CAL CLIMATE CORP
4.9(
152
)
Geothermal Heating or Cooling System - Install

Serving Rosemead, CA and surrounding areas

In business since 1970

Warranties offered

"I can't possibly rate this company high enough. I am very pleased with the professionalism of the office staff and the professionalism and promptness of my service person, Chris. My preventive maintenance window was from 10:00 a.m. to 2:00 p.m. and Chris arrived at 10:00 a.m. He set about to check out my A/C system, added R22 (is it still called Freon?) coolant and cleaned my A/C unit. What was also refreshing is that I did not get a hard sell for any additional products, services or systems.  I am a new customer and will be a repeat customer. I asked if they also maintain and service heating units and received a yes answer. They will see me again for sure."
Response time12 hrs
Recommended by99%of homeowners
Avatar for Southland Heating and Air Conditioning
Southland Heating and Air Conditioning
4.7(
160
)
Geothermal Heating or Cooling System - Install

Serving Rosemead, CA and surrounding areas

In business since 1997

Free estimates

Emergency services offered

"Sev was a total gentleman & didn’t mind letting me know the problems he was having while diagnosing the overall situation, which is very important to me. He also put up with my tiny rugrat as he lay on the floor to get to wires & she fighting to get to his ankles for a good cleaning! Thank goodness the owner was there to intervene! Really, though, Sev went out of his way to make sure I had AC today & not a moment later! He even threw in a much needed extra in order to make sure my ac was cooling at top speed! I’m grateful & my tears of relief are real. I don’t do well in the heat & my landlord is not really able to help me with this issue now. I can finally rest well tonight! Thank you, Sev & southland heating & AC! I truly appreciate it! And, also, much gratitude for Angie’s List for making it so much easier to find trustworthy repair companies!"
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
Additional Photos
Additional Photos

+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 Rosemead, 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.
Additional Photos
Additional Photos

+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 Rosemead, 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
Additional Photos

+15

Recommended by100%of homeowners
Home Comfort USA
4.3(
110
)
Geothermal Heating or Cooling System - Install

Serving Rosemead, CA and surrounding areas

In business since 1977

Free estimates

Emergency services offered

"I can't edit previous review so posting new one: I am revising my previous review. After posting my first review, Danny in Customer Service at Home Comfort USA contacted me. Danny very patiently listened to my situation and frustration and told me he would look into it, but wouldn’t “leave me hanging” and would call back. He did call back and fast-tracked a HVAC technician, Jad, to come out, who was great and called in a higher-level technician two days later. Then the higher-level technician came out a couple of days after that and found we did need a leaking core replaced and said Danny would call me. Danny did call me and went above and beyond to get the part replaced under the manufacturer’s warranty. Two days after that, Home Comfort USA came out, replaced the core, tested our HVAC, and mitigated the labor. We are now VERY happy customers with Home Comfort USA and very grateful for Danny’s great customer service and intervention. I am writing this review on a day in the mid-90s with our HVAC system keeping us VERY comfortable. Thank you."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Recommended by86%of homeowners
Avatar for West Tech Mechanical Services
West Tech Mechanical Services
4.9(
97
)
Geothermal Heating or Cooling System - Install

Serving Rosemead, CA and surrounding areas

In business since 2008

Credit card accepted

"Joe was punctual, polite, and very helpful. He took a little while to diagnose the problem with the heating unit, but once he figured it out he had the part ready and the installation underway (he first told us what the part would cost and asked permission to go ahead with the repair- which I appreciated). He tested the unit when he was done to make sure it was the right fix, which it was. Then we asked if he could also look at the air conditioning unit while he was here, since it stopped working at the end of last summer. He took some more time to fix that one, which was even harder to diagnose. But, he kept testing until he found the problem, and in the end we had 2 operable units that will save us from another service call in the busy summer season. It was worth the money.
"
2.5 ton Trane furnace
Trane Condenser
Trane 10 ton President
Wall Heater
1964 Trane split system

+8

Recommended by95%of homeowners
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