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TRUSTED BY PASADENA, TX HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon654
    Verified boiler installation services reviews

Find Boiler installation pros in Pasadena

Avatar for Kelly's
Kelly's
4.9(
45
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Pasadena, TX and surrounding areas

Approved

Super Service Award Winner

In business since 1995

Free estimates

Emergency services offered

"I had a great experience with Kelly's A/C. They installed blown-in insulation in my home, and the difference was noticeable right away—my house feels more comfortable, and I’m already seeing an improvement in energy efficiency. The team was professional, on time, and kept everything clean throughout the process. They took the time to explain the work and answer all my questions. I would definitely recommend them to anyone needing insulation or HVAC services!"
Air Duct Cleaning
insulation
HVAC
Furnace Install
Furnace Install

+15

Response time10 hrs
35 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for John Moore Services
John Moore Services
3.6(
848
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Pasadena, TX and surrounding areas

Approved

In business since 1965

Free estimates

Warranties offered

"Excellent service from John Moore! This review goes across the board to capture all those involved from the initial call for service to the final step of installation/replacement. We’ve used John Moore Services for several things in the past three months and once again they did not disappoint. Great customer service, pricing, speed and efficiency in installation! Highly recommend!!"
11 neighbors recently requested a quote
Recommended by68%of homeowners
Avatar for Gauff Coast Plumbing
Gauff Coast Plumbing
5.0(
5
)
Electric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install - For Business+2 more

Serving Pasadena, TX and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

Expert Plumbing Solutions | 10+ Years Experience\n\nLooking for a plumber who values precision and your home’s integrity? With over a decade of hands-on experience, I provide top-tier plumbing services to homeowners across Galveston, Houston, Webster, and the surrounding communities.\n\nI specialize in the high-skill projects that keep your home running efficiently:\nWhole-Home Repipes: Modernizing your infrastructure with durable materials.\nTankless Water Heaters: Endless hot water with expert, energy-efficient installations.\nExpert Drain Services: Clearing tough clogs and ensuring long-term flow.\n\nMy Philosophy:\nI believe a plumber’s job is to provide peace of mind through transparency and technical mastery. My approach is built on respect for your property and doing the job right the first time. When you hire me, you get a professional dedicated to the highest industry standards.\nLet’s get your plumbing back in peak condition!

Old cast-iron piping
New drain install
New sewer line
Avatar for Eco-Mechanical
Eco-Mechanical
New to Angi
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Pasadena, TX and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

EcoMechanical is a licensed and insured HVAC contractor proudly serving residential and commercial customers throughout the Greater Houston area. Locally owned and operated. We specialize in the installation, repair, replacement, and preventative maintenance of heating, ventilation, and air conditioning systems, delivering reliable comfort and energy-efficient solutions tailored to each customer's needs.\nOur experienced technicians are trained to service all major HVAC brands and are committed to performing every job with precision, integrity, and attention to detail. Whether it's a routine maintenance visit, an emergency repair, a complete system replacement, or a large-scale commercial HVAC installation, EcoMechanical provides dependable service that customers can trust.\nOur services include:\nResidential and commercial HVAC installations\nAir conditioning and heating repairs\nComplete system replacements\nAnd much more.

Ace Comfort Air Conditioning & Heating
4.7(
46
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Pasadena, TX and surrounding areas

In business since 2003

Free estimates

Emergency services offered

"Ace Comfort did an excellent job installing my ductless split unit system. They can go my home to provide an estimate and we scheduled a date to install. The team at Ace Comfort is wonderful to deal with and they took the opportunity to answer my questions."
Recommended by92%of homeowners
Wilson Mechanical LLC
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 Pasadena, TX and surrounding areas

In business since 2011

Free estimates

Emergency services offered

"DAVID HAD TO RAISE AND RE-HANG THE HVAC UNIT FROM THE RAFTERS OF THE HOME AS IT WAS INITIALLY INSTALLED IMPROPERLY.  THE UNIT NOW DRAINS PROPERLY INTO THE PLUMBING SYSTEM.  HE ALSO DISCOVERED A FAULTY HEAT LIMITING SWITCH ON THE FURNACE - NOT A MINOR ISSUE - AND REPLACED IT AND TESTED THE SYSTEM.  FINAL COST WAS MUCH LESS THAN HIS INITIAL ESTIMATE.   DAVID IS ALWAYS ON TIME, VERY POLITE, VERY KNOWLEDGEABLE AND PROFESSIONAL ABOUT HVAC SYSTEMS, AND VERY REASONABLE IN HIS PRICING.  I SIMPLY WON'T USE ANYONE ELSE FOR MY HVAC NEEDS AS THIS COMPANY IS SIMPLY THE BEST.
"
Recommended by100%of homeowners
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Showing 1-10 of 191
Install Boiler questions, answered by experts

Always consult your manual for specific pressure numbers. Many expansion tanks come pre-pressurized at a specific PSI range, anywhere from 12 to 40 PSI, designed for a range of home boilers. You should not have to pressurize an expansion tank yourself, only the boiler system. If your system has a tank that needs to be manually pressurized, this is generally a job for professionals and their tools.

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.

Boilers are equipped with multiple safety features to ensure safe operation. These include pressure relief valves to prevent overpressure, temperature high-limit switches to avoid overheating, and flame failure safety devices in gas boilers to cut off the gas supply if the flame goes out unexpectedly. Low water cutoffs prevent operation with insufficient water levels, and pressure gauges help monitor pressure levels. Ventilation and flue systems prevent the buildup of harmful gasses. Boilers often feature error code systems for automatic shutdown during malfunctions and gas leak detection for safety. Regular maintenance is crucial to ensure these safety features function correctly.

If you want to have hot water in your home and part of your plumbing system, you'll need a hot water heater. An alternative may be to heat water as you use it, such as by boiling what you need on the stove. But that's much less efficient and takes considerably longer than hooking up a water heater. Another option is to rely on appliances, such as a dishwasher or washing machine, that heat the water themselves.

An expansion tank must always be installed on the supply side, which is the side where the boiler sends water out to heat the systems. That placement allows the water to push against the air and condense properly as it is heated, then circulated through the system. Professional installers can recommend the best place on the supply side for an expansion tank.

The Pasadena, TX homeowners’ guide to boiler installation services

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