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TRUSTED BY ALTON, IL HOMEOWNERS

  • Average homeowner rating star icon4.3
    Average homeowner rating
  • Verified reviews icon374
    Verified boiler installation services reviews

Find Boiler installation pros in Alton

Tiger Plumbing, Heating, Air Conditioning, & Electrical Services
3.4(
354
)
Electric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install

Serving Alton, IL and surrounding areas

Approved (Corporate)

In business since 1993

Free estimates

Emergency services offered

"I have used the company many times. Two technicians came out for the tuneup and completed the job in about 2 hours. The company has also replaced the furnace and AC in the past. They are very thorough and professional. The staff is also very friendly and available for service. I am a member of their club which makes them easily accessible to me."
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+5

294 neighbors recently requested a quote
Recommended by74%of homeowners
American Airtemp LLC
New to Angi
Gas Boiler or Radiator Heating System - Install - For Business

Serving Alton, IL and surrounding areas

Approved

In business since 2008

Credit card accepted

Offers commercial services

American Airtemp LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.\n

Response time10 mins
Response rate100%
Avatar for Triplett Mechanical Services
Triplett Mechanical Services
4.9(
35
)
Gas Boiler or Radiator Heating System - Install - For Business

Serving Alton, IL and surrounding areas

In business since 1995

Free estimates

Emergency services offered

At Triplett Mechanical Services, we have been satisfying customers HVAC needs for over 13 years. Although we are a small company, we are quick to respond, and very competitive in our pricing. The work we do in our chosen trade is extremely well done and our materials are of the highest quality as well. Perhaps the thing we are proudest of is our ability to have a clean work environment at all times. Naturally, our desire is to always completely meet or exceed your needs as a consumer. When you have HVAC needs, we can fix it and in a timely fashion.

Response time10 hrs
Recommended by94%of homeowners
JMW Mechanical Heating & Cooling
4.7(
15
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Alton, IL and surrounding areas

Credit card accepted

"Very professional company. He returned my call promptly, came out to install my water heater in timely manner, and followed up after job was finished. He went above and beyond to make sure everything was up to code. I have no negative feedback for this provider."
Recommended by92%of homeowners
Avatar for Spengler Plumbing, Heating and Cooling
Spengler Plumbing, Heating and Cooling
3.8(
75
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Alton, IL and surrounding areas

In business since 1971

Emergency services offered

Credit card accepted

"The installation itself was very good.  I noticed the old tank leaking at 2:00pm Tuesday - was replaced by 2:00pm Wednesday.  They came out quickly to provide a bid and settled on Spengler that night and they were here at 8:30am the next morning.  The installer was friendly and considerate - top notch.  The only knock will be the salesman himself - a bit high pressure not a big deal because we knew we were going to use them after the research we had done.  He was here for nearly 3 hours looking things over then writing his bid then discussing with us his bid then sitting in his truck while we reviewed the bid then finally signing the contract.  The most disappointing was the discussing about their calendar - he wanted to be sure my wife knew which month he was "featured" - really - cmon man!
"
Recommended by68%of homeowners
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Install Boiler questions, answered by experts

You can replace baseboard heaters with many other types of HVAC systems, including forced-air furnaces, hydronic heating, and heat pumps. Each one has its advantages and disadvantages, so the best choice for you will depend on your budget, preferences, and the design of your house. If you aren’t sure which option is right for you, ask an HVAC pro for guidance.

Most installations take 2-5 days, including old system removal and setup.

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.

Yes. In many cases, switching from an old furnace to a high-efficiency boiler can help you save money over time. You can also save money by switching from an electric boiler to a gas boiler, which costs much less compared to the energy bills an electric boil can create. Boilers are often (but not always) more efficient than furnaces, too. Then there are discounts, rebates, and incentives that can help you save on the initial costs.

The absence of heating or hot water, unusual noises like banging or gurgling, and visible water leakage are key signs. Abnormal boiler pressure, flame irregularities (for gas boilers), or pilot light issues may also signal trouble. Frequent cycling, soot or staining, and unusual odors, particularly gas-like smells, should not be ignored. Modern boilers often display error codes or lockout mode upon detecting issues. Uneven heating across radiators and rising energy bills without increased usage can further point to problems. Prompt attention to these signs is essential to prevent further damage and ensure safety.

The Alton, IL homeowners’ guide to boiler installation services

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