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  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon54
    Verified boiler installation services reviews

Find Boiler installation pros in Sullivan

Avatar for Mr. Rooter Plumbing of St. Charles

Mr. Rooter Plumbing of St. Charles

.
4.80(
5
)
Approved Pro

Mr. Rooter Plumbing of St. Charles

.
4.80(
5
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
24 years of experience

At Mr. Rooter® Plumbing every customer’s individual needs are important. Whether it’s a simple sink clog or a damaged sewer line, you can count on a Mr. Rooter plumber to take care of your plumbing needs – day or night – with never an overtime charge. Our professional service, quality products and honest, up-front pricing make Mr. Rooter the best value in plumbing services nationwide. Mr. Rooter is ready for all emergency plumbing issues, from clogged drains and sewage backups to frozen pipes and leaking water heaters. You can count on an expert diagnosis from Mr. Rooter with our camera inspection tools. Then we’ll fix it right the first time, whether it takes HydroScrub® drain cleaning or trenchless pipe repair, with courteous smiles on our faces. There's a reason they call us Mr.® Call your local Mr. Rooter today.

At Mr. Rooter® Plumbing every customer’s individual needs are important. Whether it’s a simple sink clog or a damaged sewer line, you can count on a Mr. Rooter plumber to take care of your plumbing needs – day or night – with never an overtime charge. Our professional service, quality products and honest, up-front pricing make Mr. Rooter the best value in plumbing services nationwide. Mr. Rooter is ready for all emergency plumbing issues, from clogged drains and sewage backups to frozen pipes and leaking water heaters. You can count on an expert diagnosis from Mr. Rooter with our camera inspection tools. Then we’ll fix it right the first time, whether it takes HydroScrub® drain cleaning or trenchless pipe repair, with courteous smiles on our faces. There's a reason they call us Mr.® Call your local Mr. Rooter today.


Avatar for Tri-State Water, Power & Air

Tri-State Water, Power & Air

1656 HEADLAND DR
3.96(
24
)
Approved Pro

Tri-State Water, Power & Air

1656 HEADLAND DR
3.96(
24
)
Approved Pro
Customers say: Super punctual
345 local quotes requested
33 years of experience

In business since 1992, Tri-State prides itself on providing top notch services and products to it's many customers. Our Service Plumbing team is ready and willing to tackle your project - be the need immediate or not. Simply reach out and we will dispatch a technician immediately to provide a quote and solve your problem!

"Only rating 1 because it doesn't go lower. Had a new unit installed end of Sept 24. First time power goes out on 11/5, no electricity. When tri state sells you a product, they pitch their amazing customer service with all these guarnatees of knowing when your unit is out before you know and having someone there within 24 hours etc. Well, the first call we make we are told it will be the end of Nov to get someone out to look at it. 3 weeks. Nobody shows up. Then we get a call that says "your appointment on Dec 12 has been canceled and the earliest we can get to you is Jan 16th. This is 2.5 months wait to get service to fix a nearly $20k unit, that is upcharged because of the excellent service. You can't get anyone to answer your call. you wait on hold for 20 minutes, then have to leave a voicemail in which you will not get called back. Based on my experience, find someone else and pay less. Even if the service is bad, which it can't be worse than this, you save money! @kohler"

Jerry B on December 2024

In business since 1992, Tri-State prides itself on providing top notch services and products to it's many customers. Our Service Plumbing team is ready and willing to tackle your project - be the need immediate or not. Simply reach out and we will dispatch a technician immediately to provide a quote and solve your problem!

"Only rating 1 because it doesn't go lower. Had a new unit installed end of Sept 24. First time power goes out on 11/5, no electricity. When tri state sells you a product, they pitch their amazing customer service with all these guarnatees of knowing when your unit is out before you know and having someone there within 24 hours etc. Well, the first call we make we are told it will be the end of Nov to get someone out to look at it. 3 weeks. Nobody shows up. Then we get a call that says "your appointment on Dec 12 has been canceled and the earliest we can get to you is Jan 16th. This is 2.5 months wait to get service to fix a nearly $20k unit, that is upcharged because of the excellent service. You can't get anyone to answer your call. you wait on hold for 20 minutes, then have to leave a voicemail in which you will not get called back. Based on my experience, find someone else and pay less. Even if the service is bad, which it can't be worse than this, you save money! @kohler"

Jerry B on December 2024


"He responded very quickly and was able to come out and fix my mini split. I would recommend this company to anyone looking for a fair price and good work. Thanks again! "

Jackie K on October 2025

Good Service Heating and Cooling,LLC. Over 30 years of HVAC experience. Honest and affordable. Do it right the first time.

"He responded very quickly and was able to come out and fix my mini split. I would recommend this company to anyone looking for a fair price and good work. Thanks again! "

Jackie K on October 2025


Avatar for C & G Plumbing

C & G Plumbing

811 E Jack St
4.95(
20
)
Approved Pro

C & G Plumbing

811 E Jack St
4.95(
20
)
Approved Pro
Customers say: True professional
10 local quotes requested
1 years of experience

"" insured and licensed" C&G plumbing accredited by the BBB, offering Competitive pricing, professional service backed by 27 yrs experience in the field. Discount for veterans, seniors and first responders. Offering upfront pricing with no hidden fees and Willing to beat or match written estimates. We are experts in our trade and will do our best to keep you as educated as we can on your particular project. All work backed by a warranty. Give us a call today! We look forward to working with you!

"He was very professional & neat"

Susan H on October 2025

"" insured and licensed" C&G plumbing accredited by the BBB, offering Competitive pricing, professional service backed by 27 yrs experience in the field. Discount for veterans, seniors and first responders. Offering upfront pricing with no hidden fees and Willing to beat or match written estimates. We are experts in our trade and will do our best to keep you as educated as we can on your particular project. All work backed by a warranty. Give us a call today! We look forward to working with you!

"He was very professional & neat"

Susan H on October 2025



Avatar for Santoro Pro Painting & Contracting LLC

Santoro Pro Painting & Contracting LLC

No reviews yet

Santoro Pro Painting & Contracting LLC

No reviews yet

At Santoro Pro Painting & Contracting, each client becomes like family. With traditional values that support an old school work ethic, all jobs get done cleanly, affordably and honestly. As a union trained painter and taper with a love for music and art, Danny has spent many years painting, designing, fixing and repairing many residential and commercial properties around the St. Louis area to make them both functional and beautiful.

At Santoro Pro Painting & Contracting, each client becomes like family. With traditional values that support an old school work ethic, all jobs get done cleanly, affordably and honestly. As a union trained painter and taper with a love for music and art, Danny has spent many years painting, designing, fixing and repairing many residential and commercial properties around the St. Louis area to make them both functional and beautiful.



KJ Construction and handyman services

No reviews yet

KJ Construction and handyman services

No reviews yet

We do rock spreading , some electric, land clearing, trees and stump removal, metal roofs, painting, home repairs and additions, and much much more, both commercial and residential, insured for over 30 years.

We do rock spreading , some electric, land clearing, trees and stump removal, metal roofs, painting, home repairs and additions, and much much more, both commercial and residential, insured for over 30 years.



Avatar for BTK Contracting

BTK Contracting

19687 Clark Road
5.00(
1
)

BTK Contracting

19687 Clark Road
5.00(
1
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Mon-Fri 7a-5pm We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!

"Everything was great my driveway looks amazing couldn’t be happier"

Zac B on March 2023

Mon-Fri 7a-5pm We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!

"Everything was great my driveway looks amazing couldn’t be happier"

Zac B on March 2023

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Install Boiler questions, answered by experts

Costs depend on unit size, labor, fuel type, and whether additional piping or venting is needed.

Most experts recommend getting three to five HVAC quotes from licensed, insured, reputable local heating and cooling companies. Getting multiple detailed HVAC quotes (but not too many) lets you compare the equipment, services, and prices of several contractors without being overwhelmed by options. It can also let you see if one contractor’s prices are much higher or lower than the others and give you a chance to ask for clarification. That way, you can weed out any contractors who aren’t providing quality services or materials and find the company that best meets your budget, quality requirements, and long-term goals.

The right type of HVAC system will depend on several factors, including your climate, budget, preferences, and existing HVAC setup. For example, if you live in an area that experiences extreme weather, then a split system would likely be the best option. Or, if budget is a concern, consider installing a ductless system in just one room.

It can take anywhere from four hours to three days to replace a boiler with a new one. How long your particular boiler installation takes will depend on whether you need a gas line installed and if you’re switching to a new boiler system. 

Replacing a combination boiler or standard boiler with the same system should only take four to six hours. Meanwhile, switching from a conventional boiler system to a combination boiler system could take a few days.

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

The Sullivan, MO homeowners’ guide to boiler installation services

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