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TRUSTED BY DIAMOND BAR, CA HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon1.3k+
    Verified boiler installation services reviews

Find Boiler installation pros in Diamond Bar

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

Serving Diamond Bar, CA and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"The new heating system was installed perfectly and works wonderfully. They were careful, neat, and professional. Definitely recommend their service. The whole process was smooth and stress-free."
Additional Photos
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+24

Response time3 days
6 neighbors recently requested a quote
Recommended by7%of homeowners
Avatar for Alpine Plumbing, Heating, and Air
Alpine Plumbing, Heating, and Air
4.7(
35
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Diamond Bar, 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 by70%of homeowners
Avatar for HD MECHANICAL INC
HD MECHANICAL INC
5.0(
31
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Diamond Bar, 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%
75 neighbors recently requested a quote
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 Diamond Bar, 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 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 Diamond Bar, CA and surrounding areas

In business since 2008

Credit card accepted

"This is the first time in many years that I have signed in to Angi. I saw that I still had this pending review to complete. Let me just say, this company was excellent. Would hire them again for a central aircon and heating install project. Middle range price but I think excellent work that you can trust."
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 Diamond Bar, CA and surrounding areas

In business since 2006

Emergency services offered

Credit card accepted

"Everyone at Baltica was responsive and eager to please.  Calls and emails were returned punctually in every instance.  Everyone I communicated with was professional and accommodating. 
I called initially to discuss moving to a tankless water heater, but a personal review of my property showed that it was not possible.  Kevin Phidayev, with whom I made the arrangements, was eager to accommodate my product needs, financial needs, and scheduling needs.  Kevin was ultra-responsive to every call, email or request.
The installer, Marius, was particularly pleasant.  He showed up on time every time.  He looked professional, was knowledgeable, and he got the job done on time.  He was happy to accommodate my neighbors in the condo who would be without water for a brief time. Marius left my home clean, and he protected my new floors from damage. 
To be honest, I did not do any comparative shopping for pricing purposes because I was so impressed with my initial contact with this company.  I got all kinds of upgrades I never knew existed.  Marius installed a pressure relief valve, new water valve, new stainless steel flexible water and gas supply lines, and new double earthquake straps, among other things. I have learned from bitter experience that you get what you pay for.  If this water heater seemed costlier than I expected (my only "B" rating), in the end I believe I got my money's worth. 
The level and quality of customer service is unique in my experience.  Truly outstanding.  I have already referred business to Baltica, and would do so again without hesitation."
Before and after
Before and after #2
Recommended by100%of homeowners
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Install Boiler questions, answered by experts

In most cases, repairing a radiator is more affordable than replacing it. A typical repair may cost between $100 and $200, while a replacement can average $1,500, with a range of $250 to $2,500 depending on the unit type. Radiator issues are often simple fixes for a professional, such as a blown fuse, malfunctioning thermostat, or a loose valve, and can take less than an hour. However, if the long-term costs of fixing the radiator are higher than replacement, it's better to get a new model. It is recommended to consult a heating expert to diagnose the problem and determine the best solution for your situation.

Overall, heating your home with an oil furnace tends to be less expensive than heating your home with an electric heating system. Oil heating systems stay warm for longer periods of time without drawing a constant electrical current to maintain a temperature. Plus, heating oil systems typically have a longer lifespan and lower price tag than their electrical counterparts, resulting in short- and long-term savings.

Costs depend on system size, efficiency rating, and additional features like zoning or smart controls.

Yes, government incentives and programs are available to encourage energy-efficient upgrades in many regions. These incentives may include tax credits, rebates, grants, and low-interest loans for homeowners who invest in energy-efficient improvements such as HVAC system upgrades, insulation, and efficient windows. The availability and specific details of these incentives can vary by location, so check with your local government or utility company to explore your options.

Professionals can recommend efficient layouts or appliances and ensuring regulatory compliance.

The Diamond Bar, CA homeowners’ guide to boiler installation services

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