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Best boiler installation pros near Whittier, CA

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  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon967
    Verified boiler installation services reviews

Top-Rated Boiler installation pros in Whittier - Updated Nov 2026

Avatar for Global Green Solutions
Global Green Solutions
5.0(
248
)
Boiler or Radiator Heating System - Install or Replace

Serving Whittier, CA and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"Outstanding effort! Our old air conditioner was replaced and a new system was expertly installed by the team from Heating & A/C Repair, Replacement, New Installation. They produced outstanding results, worked neatly, and adhered to the timetable. Unquestionably a trustworthy business."
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+24

Response time3 days
8 neighbors recently requested a quote
Recommended by7%of homeowners
Avatar for Alpine Plumbing, Heating, and Air
Alpine Plumbing, Heating, and Air
4.7(
36
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Whittier, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2014

Free estimates

Emergency services offered

"I Called to get an in person quote for a tankless water heater flush and left this job with a whole house filter and a fridge connection. When Michael first arrived we inspected the tankless unit and tested the water to conclude flushing was not my best option. He then walked me through my options for home filters and we decided on a Halo system. Michael was very well educated on the subject and gave me the best value filter for my needs. He installed the unit the next day in less than a few hours and left me with a flawless work of art. I couldn't be more impressed with the professionalism he brings to this trade! I also requested to hook up a fridge and he did that in what seemed like 30 minutes. He will be the only plumber I call from now on!! Thank you Michael!!!"
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
Avatar for HD MECHANICAL INC
HD MECHANICAL INC
4.9(
32
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Whittier, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Free estimates

Emergency services offered

"From start to finish, my experience with HD Mechanical Inc. was exceptional. They expertly installed our outdoor patio heaters and ac unit for my home, ensuring seamless communication every step of the way. Their professionalism was evident throughout the process, and they went above and beyond to meet our specific preferences and built everything to code. Now, thanks to their diligent work, our heaters function flawlessly, delivering the perfect ambiance to our outdoor space. I couldn't be happier with the outcome and highly recommend HD Mechanical Inc. for any heating or cooling needs."
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
SINCLAIR HEATING & AIR CONDITIONING LLC
4.9(
86
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Whittier, CA and surrounding areas

In business since 2003

Emergency services offered

Warranties offered

"They came out on time and did the inspection. It was determined that the thermostat was broken. We were shown options that he could install right then and there, and told how we could do it ourselves if we wanted a different thermostat. We chose a different one and installed it according to their directions. We have been toasty warm all winter."
Recommended by98%of homeowners
Avatar for Water Heaters Only, Inc
Water Heaters Only, Inc
4.7(
440
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Whittier, CA and surrounding areas

In business since 1968

Free estimates

Emergency services offered

"My water heater was leaking but glad that I contacted water heater only. I called at 10:00am and by 12pm they were here installing my new water heater. David from Water Heaters Only came in the afternoon of 6/12/18 and it took 2 hours to install to city and state code. He had all the parts and tools to change the water heater on the spot. Old heater was taken away and new heater installed by 2pm.. I would highly recommend Water Heaters Only. They were very professional and courteous."
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
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Whittier, CA and surrounding areas

In business since 1998

Free estimates

Emergency services offered

"They were AWESOME. Same day service and quickly diagnosed the issue (blown transformer, since my furnace does not have a fuse). The guys were professional, courteous, explained what they were doing and why, and couldn't have been nicer. They finished the job quickly, and even installed the NEST which I had done wrong the first time, hence the need to call them. :-P"
CEO & INSTALLER
CRANE
Rheem Puron System
Crane placing unit
Additional Photos

+15

Recommended by100%of homeowners
Avatar for West Tech Mechanical Services
West Tech Mechanical Services
4.9(
97
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Whittier, CA and surrounding areas

In business since 2008

Credit card accepted

"West Tech Mechanical Services (Joe Gonsalez) did an excellent job. This is the best investment that I have ever made for our quality of life in our home. Joe's attention to detail is evident in the care and consideration that he put into the duct work in the installation process. He thoroughly explained to me the importance of the duct work: location and size of the ducts to maximize the efficiency of the system that he was installing. Our home is an old home, and I really appreciate the care that he took in the installation process. I obtained 3 quotes for this job and West Tech Mechanical was in the middle. All the persons that came to our house were nice people. However, Joe's obvious attention to detail and how he explained the job is what convinced me that he and his company were the right people for the job. For a home owner that is considering the installation of a central air and heat system in their home or, any work for that matter on an existing heat and air system, I highly recommend this company as one that should be considered."
2.5 ton Trane furnace
Trane Condenser
Trane 10 ton President
Wall Heater
1964 Trane split system

+8

Recommended by95%of homeowners
Avatar for BALTICA Plumbing-Heating-Air Conditioning-Tankless
BALTICA Plumbing-Heating-Air Conditioning-Tankless
5.0(
13
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Whittier, CA and surrounding areas

In business since 2006

Emergency services offered

Credit card accepted

"The representative from Baltica arrived on time. Quickly diagnosed the problem (where previous plumbers could not), fixed the water pressure valve, advised me on do's and don't in use of the Noritz system. He also advised me that I should change the cap on the water heater, which was confirmed by the Noritz representative when I called the company. I would recommend Baltica any day to any one. Knowledgeable and courteous technicians. Reasonable prices. If you have tank-less water heater, don't use just any plumber, use Noritz certified technician. My heaters were previously incorrectly installed by licensed plumber, but he did not have experience with tankless."
Before and after
Before and after #2
Recommended by100%of homeowners
Avatar for Southland Heating and Air Conditioning
Southland Heating and Air Conditioning
4.7(
160
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Whittier, CA and surrounding areas

In business since 1997

Free estimates

Emergency services offered

"I am primarily writing this review to relate how Southland Heating and Air responded when we discovered a problem. Once installed, our A/C worked well and we had no problems... around December, after we had been using our heater exclusively (no A/C), I decided to simply run the A/C to test it, blow it out and be sure everything was running well. What I discovered was a BAD smell with the A/C... which we presumed was the dreaded 'dirty sock' syndrome... Needless to say, we were horrified... particularly after spending a lot of money to have AC installed. WELL, I am happy to relate that Southland Heating and Air were VERY responsive, took the time to diagnose the problem and - we feel - went above and beyond to be sure we were satisfied. Ultimately - for whatever reason - our installed HVAC coil was contaminated. Following a few tries at lesser fixes, Southland simply replaced the coil and we were back up and running. Their service guys and technician were highly professional, always on time and truly worked to fix the problem. Since the coil replacement, we have had no problems and we are happy to report that our system runs like a charm. When you are spending a lot of money for this sort of upgrade you truly want to know that your install company stands by their products and work and won't leave you hanging out to dry if and when there is a problem. Southland took care of us and took care of business."
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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Additional Photos

+37

Response time1 day
Response rate100%
Recommended by93%of homeowners
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Install Boiler FAQs, answered by experts

No, there isn’t always water in radiators. In a one-pipe system, water is constantly circulating from the boiler to the radiators and back. In a two-pipe system, water travels through two separate channels: one that goes to your radiators and one that returns back to the boiler so it can heat up again.

Installation costs range from $4,000 to $12,000, depending on unit size, efficiency rating, and labor.

Probably not. Moving a boiler to a new location is a very different prospect from replacing it in the same spot, and significantly more expensive. Plus, boilers are typically carefully positioned in proximity to pipes and radiators when installed. Homeowners may want to move boilers to free up space, prevent freezing problems that have happened in winter, or solve a noise issue—but it’s a much more costly proposition.

If you go to turn it counterclockwise and it won’t turn anymore, it’s open. Like most other valves, you should be able to turn a radiator valve counterclockwise (to the left) to open it and clockwise (right) to close it. To close a radiator valve, turn it clockwise until you meet some resistance and can’t turn anymore, but do so carefully to avoid breaking the valve.

The most important sign of a boiler problem is something happening unexpectedly, which is why regular boiler maintenance is important. Unexpected problems can include strange smells, new leaks, and unexpected noises that your boiler wasn’t making before. Additionally, if a boiler keeps shutting off or can’t maintain a specific temperature range, it’s time to call in an expert.

The Whittier, CA homeowners’ guide to boiler installation services

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