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  • Average homeowner rating star icon4.8
    Average homeowner rating
  • Verified reviews icon57
    Verified boiler repairs reviews

Find Boiler repair pros in Marathon

Avatar for The Water Heater Guys, LLC

The Water Heater Guys, LLC

5.00(
5
)
Approved Pro

The Water Heater Guys, LLC

5.00(
5
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
4 years of experience

The Water Heater Guys 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 customer's interests and make their concerns the basis of our business.

"The Water Heater Guys were awesome! You could see they really care about their customers. They came in and diagnosed the problem. We needed a new hot water. They made sure and got everything taken care of for us and had our new hot water heater installed right away. They went above and beyond!! I would definitely recommend them!!"

Tammy O on September 2024

The Water Heater Guys 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 customer's interests and make their concerns the basis of our business.

"The Water Heater Guys were awesome! You could see they really care about their customers. They came in and diagnosed the problem. We needed a new hot water. They made sure and got everything taken care of for us and had our new hot water heater installed right away. They went above and beyond!! I would definitely recommend them!!"

Tammy O on September 2024


Avatar for Perfect Indoor Comfort

Perfect Indoor Comfort

4.86(
7
)
Approved Pro

Perfect Indoor Comfort

4.86(
7
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
6 years of experience

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of General Contractor services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction!

"PIC really offers the sort of trades service we used ro find in Wisconsin communities. Scott explained different options with newer technologies before letting me decide what was right for us and our pocket book. We've had him do both AC repair work and installation and we're planning a garage heating system this fall as well. Fast, knowledgeable, and respectful of our circumstances. I highly recommend PIC for any HVAC need, large or small. I've talked to many others who have had the same experience with them as well!"

June M on May 2023

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of General Contractor services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction!

"PIC really offers the sort of trades service we used ro find in Wisconsin communities. Scott explained different options with newer technologies before letting me decide what was right for us and our pocket book. We've had him do both AC repair work and installation and we're planning a garage heating system this fall as well. Fast, knowledgeable, and respectful of our circumstances. I highly recommend PIC for any HVAC need, large or small. I've talked to many others who have had the same experience with them as well!"

June M on May 2023


"Teddy was real good at the whole project. Hes our go to guy ."

Steve S on December 2023

TEDDY BALLARD CONSTRUCTION AND MECHANICAL LLC has become a staple of professionalism and quality work HVAC for years. With 15 plus years of experience, there is no job too small or too complex for our crew. Call today to schedule an appointment!

"Teddy was real good at the whole project. Hes our go to guy ."

Steve S on December 2023


Avatar for Roto-Rooter Sewer and Drain Cleaning Services

Roto-Rooter Sewer and Drain Cleaning Services

5.00(
4
)
Approved Pro

Roto-Rooter Sewer and Drain Cleaning Services

5.00(
4
)
Approved Pro
Customers say: Quick response
90 years of experience
Free onsite estimate

Roto-Rooter is your drain-clearing expert, providing FREE estimates for every single job, which means you never have to pay a diagnostic fee for your unique drain-cleaning issue. Roto-Rooter technicians provide emergency and maintenance services on all clogged lines. We offer residential and commercial services that customers depend on for all their local drain needs. Roto-Rooter has 24-hour service, seven days a week. When emergencies strike in the evening and weekends, you can rest assured we will be there. Call Roto-Rooter and let one of our amazing dispatchers assist you.

"Brandon K came from Wausau and correctly determined where the clog was and was able to verify and get it unclogged using the camera. All clear now."

Nancy L on January 2025

Roto-Rooter is your drain-clearing expert, providing FREE estimates for every single job, which means you never have to pay a diagnostic fee for your unique drain-cleaning issue. Roto-Rooter technicians provide emergency and maintenance services on all clogged lines. We offer residential and commercial services that customers depend on for all their local drain needs. Roto-Rooter has 24-hour service, seven days a week. When emergencies strike in the evening and weekends, you can rest assured we will be there. Call Roto-Rooter and let one of our amazing dispatchers assist you.

"Brandon K came from Wausau and correctly determined where the clog was and was able to verify and get it unclogged using the camera. All clear now."

Nancy L on January 2025


Construction Experts

New on AngiNew on Angi
Approved Pro

Construction Experts

New on AngiNew on Angi
Approved Pro
33 years of experience
Free onsite estimate

Helping Build Dreams for Over 30 Years We at Construction Experts focus on quality services over quantity. We use our experience and expertise to complete your project with perfection. Customer service and honesty are the most important aspects of our business and your satisfaction is guaranteed. Please call us today for an estimate. We look forward to working with you.

Helping Build Dreams for Over 30 Years We at Construction Experts focus on quality services over quantity. We use our experience and expertise to complete your project with perfection. Customer service and honesty are the most important aspects of our business and your satisfaction is guaranteed. Please call us today for an estimate. We look forward to working with you.


Avatar for Everdry Waterproofing

Everdry Waterproofing

5.00(
17
)
Approved Pro

Everdry Waterproofing

5.00(
17
)
Approved Pro
Customers say: Quality work
22 local quotes requested
7 years of experience

Everdry is a full service waterproofing and foundation repair specialist. Locally owned and operated. We provide FREE Inspections, FREE estimates to those that qualify. We have been in business for 40 years, offering lifetime warranties that are transferrable to new homeowner's.

"Wonderful experience with Adam! He was professional and knowledgeable. Thank you!"

Kendra B on March 2025

Everdry is a full service waterproofing and foundation repair specialist. Locally owned and operated. We provide FREE Inspections, FREE estimates to those that qualify. We have been in business for 40 years, offering lifetime warranties that are transferrable to new homeowner's.

"Wonderful experience with Adam! He was professional and knowledgeable. Thank you!"

Kendra B on March 2025


Anderes Plumbing LLC

4.53(
44
)
Approved Pro

Anderes Plumbing LLC

4.53(
44
)
Approved Pro
Customers say: Quick response
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
29 local quotes requested

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"Don't understand 200 dollar gas surcharge for 20 mile round trip𠤬"

Gordon E on July 2023

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"Don't understand 200 dollar gas surcharge for 20 mile round trip𠤬"

Gordon E on July 2023


Avatar for Neli Virtual Appliance Repair

Neli Virtual Appliance Repair

4.30(
577
)
Approved Pro

Neli Virtual Appliance Repair

4.30(
577
)
Approved Pro
Customers say: Super punctual
31052 local quotes requested
9 years of experience

NEW! Appliance Consultation – Just $35 Get expert advice before you spend on repairs or replacements. A Neli technician will evaluate your issue and help you decide if your appliance can be fixed—or if it’s time for a new one. Virtual Appliance Diagnosis and Repair - Just $45 Service Description: Diagnose or repair your appliance virtually—no need for anyone to enter your home. Neli’s certified technicians guide you step-by-step via secure video chat. How It Works: Book online at nelihome.com or call 833-876-0900 Connect with a tech through our video platform Diagnose or fix the issue in real time Get expert advice and confidence in your next steps What’s Included: Real-time video guidance from a certified technician Diagnosis of the issue OR full repair (when possible) Step-by-step guidance using your smartphone or tablet Safe, contact-free service - no one in your home Flexible scheduling—appointments available daily Perfect For: Appliance fixes HVAC troubleshooting DIY-savvy homeowners Saving time and money on service calls

"Super helpful"

Michele H on November 2025

NEW! Appliance Consultation – Just $35 Get expert advice before you spend on repairs or replacements. A Neli technician will evaluate your issue and help you decide if your appliance can be fixed—or if it’s time for a new one. Virtual Appliance Diagnosis and Repair - Just $45 Service Description: Diagnose or repair your appliance virtually—no need for anyone to enter your home. Neli’s certified technicians guide you step-by-step via secure video chat. How It Works: Book online at nelihome.com or call 833-876-0900 Connect with a tech through our video platform Diagnose or fix the issue in real time Get expert advice and confidence in your next steps What’s Included: Real-time video guidance from a certified technician Diagnosis of the issue OR full repair (when possible) Step-by-step guidance using your smartphone or tablet Safe, contact-free service - no one in your home Flexible scheduling—appointments available daily Perfect For: Appliance fixes HVAC troubleshooting DIY-savvy homeowners Saving time and money on service calls

"Super helpful"

Michele H on November 2025



Avatar for Parisi Construction

Parisi Construction

No reviews yet

Parisi Construction

No reviews yet
Free onsite estimate

Knowledgeable in all areas of the home. Theres nothing that's too big or small to build, replace, add on or repair. Been in business for 25+ years. I pride myself on being up front and honest, detailed craftsmanship and working for a fair price.

Knowledgeable in all areas of the home. Theres nothing that's too big or small to build, replace, add on or repair. Been in business for 25+ years. I pride myself on being up front and honest, detailed craftsmanship and working for a fair price.

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Boiler Repair questions, answered by experts

Steam boilers require flushing at least every six to 12 months to keep them operating effectively for as long as possible. Depending on your water quality and frequency of use, you might need to do this more frequently. The flushing process helps to remove problematic buildup of sediments. While a boiler contractor near you can perform a thorough annual flush, learning how to drain the system yourself means you can do this monthly if you experience speedy mineral accumulation because of hard water. 

There are several common types of HVAC systems that you may have, including split systems, hybrid HVAC, duct-free systems, packaged heating and air, geothermal heating, or even portable units for heating or cooling. If you aren’t sure which type is in your home or are looking to install something different, you should consult an HVAC pro to determine which option is right for your heating and cooling needs.

The radiators closest in proximity to the boiler heating system will heat up first. Radiators in rooms farther away from the boiler will take longer to heat up and may be the coolest rooms in the house. The radiator unit itself should heat up evenly; otherwise, there may be trapped air inside it.

To maintain a boiler and ensure it works optimally, regularly read the temperature and pressure gauges on the unit to ensure they're within the limits described in your owner's manual. Lubricate the circulating pump according to the manufacturer's instructions. Check the water level in the expansion tank and open the tank valve to drain it if it's more than half full.

A home radiator works by using radiation and convection to transfer heat throughout your home. Electric radiators use metal to conduct heat and warm the air, which then rises to warm the room. Steam and hot water radiators work with a boiler and piping system to pump thermal energy throughout the home. Hot water radiators use a boiler to heat the water before circulating it to the radiator, while steam heating radiator systems convert the heated water to steam before circulating it out. When the water or steam cools, it travels back to the boiler to be heated again.

The Marathon, WI homeowners’ guide to boiler repairs

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