Top-rated boiler repair pros.

Get matched with top boiler repair pros in Merrimac, WI

Enter your ZIP and get matched with up to 5 pros

Need a pro for your boiler repair project in Merrimac, WI?

Select your specific project to find the pro for you.

TRUSTED BY MERRIMAC, WI HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon248
    Verified boiler repairs reviews

Find Boiler repair pros in Merrimac

Avatar for Mad City Windows & Baths

Mad City Windows & Baths

4.78(
3,050
)
Approved Pro

Mad City Windows & Baths

4.78(
3,050
)
Approved Pro
Super Service Award
Customers say: Quality work
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
1998 years of experience

We are the premier home improvement company in Madison, Green Bay, Milwaukee & throughout Wisconsin with years of experience and countless home improvement projects to prove it. We’re locally owned and operated so we know what works best in this climate and we choose quality products designed with Wisconsin area homeowners in mind. Whether you need replacement windows, vinyl siding, bathrooms, or metal roofing our professional installers will leave your home looking great.

"For a long time, I have been thinking about converting the bath and shower in my upstairs bathroom to a walk-in shower. After meeting with Sales Rep Ryan Latko and finding out that Mad City Home Improvement had a lifetime, transferable non-prorated all-inclusive warranty, I gladly picked out all the items I would need for my shower and said to get me on the schedule for my install. And then on Tuesday, November 25, Walter showed up to do my demolition and new install. Walter worked all day Tuesday, Wednesday, and Friday (Thursday was Thanksgiving) and I could not be more pleased with the final product – my new and exciting walk-in shower. I spent time each day watching Walter work, asking questions, and making a photo diary of the entire process. If I had to tell someone what I thought of Walter, I would say he was extremely personable, a definite perfectionist, and an absolute wonderful individual as a person and as an employee of Mad City Home Improvement. I guess you can tell at this point that I am 100% satisfied with the entire process to get my new and beautiful walk-in shower and would highly recommend Mad City Home Improvement to anyone who is considering this kind of addition to their own home. I would like to include a before and after picture so you could judge for yourself what a beautiful job that Walter did and understand my excitement with my new walk-in shower, but that feature wasn't available - but look at the similar posting I made on Facebook and you will see the pictures."

J. Martin C on December 2025

We are the premier home improvement company in Madison, Green Bay, Milwaukee & throughout Wisconsin with years of experience and countless home improvement projects to prove it. We’re locally owned and operated so we know what works best in this climate and we choose quality products designed with Wisconsin area homeowners in mind. Whether you need replacement windows, vinyl siding, bathrooms, or metal roofing our professional installers will leave your home looking great.

"For a long time, I have been thinking about converting the bath and shower in my upstairs bathroom to a walk-in shower. After meeting with Sales Rep Ryan Latko and finding out that Mad City Home Improvement had a lifetime, transferable non-prorated all-inclusive warranty, I gladly picked out all the items I would need for my shower and said to get me on the schedule for my install. And then on Tuesday, November 25, Walter showed up to do my demolition and new install. Walter worked all day Tuesday, Wednesday, and Friday (Thursday was Thanksgiving) and I could not be more pleased with the final product – my new and exciting walk-in shower. I spent time each day watching Walter work, asking questions, and making a photo diary of the entire process. If I had to tell someone what I thought of Walter, I would say he was extremely personable, a definite perfectionist, and an absolute wonderful individual as a person and as an employee of Mad City Home Improvement. I guess you can tell at this point that I am 100% satisfied with the entire process to get my new and beautiful walk-in shower and would highly recommend Mad City Home Improvement to anyone who is considering this kind of addition to their own home. I would like to include a before and after picture so you could judge for yourself what a beautiful job that Walter did and understand my excitement with my new walk-in shower, but that feature wasn't available - but look at the similar posting I made on Facebook and you will see the pictures."

J. Martin C on December 2025


Avatar for Cardinal Heating & Air Conditioning

Cardinal Heating & Air Conditioning

4.90(
128
)
Approved Pro

Cardinal Heating & Air Conditioning

4.90(
128
)
Approved Pro
Super Service Award
Customers say: Super punctual
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
1984 years of experience

Since 1984, Cardinal Heating, Cooling, Plumbing & Electric has provided the Sun Prairie, WI and the surrounding area with exceptional Heating, Air Conditioning, Electrical and Plumbing services. We offer professional technicians, same-day installations and 24-hour emergency service. We believe we are the right choice for any of your HVAC, Plumbing, or Electrical needs. Call today to schedule your next appointment!

"Had an old fixture above kitchen sink go kaput (fluorescent starter disintegrated), so Cardinal came out and offered LED alternatives (two provided, brought on-hand from supply warehouse). Also fixed a switched outlet that had shorted out. Great work done, nice alternatives for the LED light, and switched outlet was wired to be always-on for one socket and switched for the other -- better than it was before at no additional cost. Later I called to ask the exact serial and model number of the LED light because the papers left did not state it. Not only did I get an email a couple hours later with the model/serial, the tech included the detailed documentation for the fixture so if anything goes wrong I can likely fix it myself next time. The tech who did the work also applied a 10% off discount card for me with no extra hassle, saving me close to $100 on the work."

Joe K on November 2025

Since 1984, Cardinal Heating, Cooling, Plumbing & Electric has provided the Sun Prairie, WI and the surrounding area with exceptional Heating, Air Conditioning, Electrical and Plumbing services. We offer professional technicians, same-day installations and 24-hour emergency service. We believe we are the right choice for any of your HVAC, Plumbing, or Electrical needs. Call today to schedule your next appointment!

"Had an old fixture above kitchen sink go kaput (fluorescent starter disintegrated), so Cardinal came out and offered LED alternatives (two provided, brought on-hand from supply warehouse). Also fixed a switched outlet that had shorted out. Great work done, nice alternatives for the LED light, and switched outlet was wired to be always-on for one socket and switched for the other -- better than it was before at no additional cost. Later I called to ask the exact serial and model number of the LED light because the papers left did not state it. Not only did I get an email a couple hours later with the model/serial, the tech included the detailed documentation for the fixture so if anything goes wrong I can likely fix it myself next time. The tech who did the work also applied a 10% off discount card for me with no extra hassle, saving me close to $100 on the work."

Joe K on November 2025


Avatar for O.G. Property Services

O.G. Property Services

5.00(
35
)
Approved Pro

O.G. Property Services

5.00(
35
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
Warranties offered

Hi every body, this is Oscar and I know the quality of work I can do for you. I have maintenance experience from different companies. My work is about painting, some flooring, drywall repairs, appliances troubleshooting, gutters and roof cleaning, downspout, dryer vent cleaning and general cleaning services at home. Anything I can help let me know. I speak English, Spanish, and Italian if it’s needed.

"Top marks all the way around for Oscar. Oscar is the best handyman we’ve ever employed. He was everything you want in someone working on your home: excellent communication, reasonable cost, high quality work, prompt, dependable, friendly, neat, cleans up after each day of work, very detail-oriented, and just a really nice guy. He re-screened our 3-season porch, replaced all the exterior wood facings on the porch, hung a new and much improved door on same porch, replaced about 12 feet of cedar privacy fence, and power washed the full exterior of our house. There is no question that we will call Oscar again when we need work done. If you’re looking for a talented handyman, look no further; just call Oscar. "

Diana G on November 2025

Hi every body, this is Oscar and I know the quality of work I can do for you. I have maintenance experience from different companies. My work is about painting, some flooring, drywall repairs, appliances troubleshooting, gutters and roof cleaning, downspout, dryer vent cleaning and general cleaning services at home. Anything I can help let me know. I speak English, Spanish, and Italian if it’s needed.

"Top marks all the way around for Oscar. Oscar is the best handyman we’ve ever employed. He was everything you want in someone working on your home: excellent communication, reasonable cost, high quality work, prompt, dependable, friendly, neat, cleans up after each day of work, very detail-oriented, and just a really nice guy. He re-screened our 3-season porch, replaced all the exterior wood facings on the porch, hung a new and much improved door on same porch, replaced about 12 feet of cedar privacy fence, and power washed the full exterior of our house. There is no question that we will call Oscar again when we need work done. If you’re looking for a talented handyman, look no further; just call Oscar. "

Diana G on November 2025


Avatar for Mad City Windows & Baths

Mad City Windows & Baths

4.74(
624
)
Approved Pro

Mad City Windows & Baths

4.74(
624
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
2001 years of experience

To learn about Mad City Windows and its history, you need to start back in 1998 when our family-owned company first opened its doors and changed the face of home remodeling in Wisconsin. From the beginning, our business has been built on a foundation of friendship and trust and, in return, local homeowners have come to know they can place their trust in us. In order make certain that we consistently earn that trust, we are dedicated to ensuring the expert, seamless delivery of high-quality products and remodeling solutions to homeowners throughout our service area. Today, we expand our home remodeling expertise across Wisconsin, Minnesota, Iowa and Illinois. With over 50,000 completed projects, we take our 2+ decades of experience to serve the communities of Minnesota, Iowa and Illinois. They can expect our highest standard of service and professionalism.

"High pressure sales person which ended up with a mismatch of the rest of my bathroom. They refuse to make it right. . I would recommend that you go with a different company. "

Karen P on November 2025

To learn about Mad City Windows and its history, you need to start back in 1998 when our family-owned company first opened its doors and changed the face of home remodeling in Wisconsin. From the beginning, our business has been built on a foundation of friendship and trust and, in return, local homeowners have come to know they can place their trust in us. In order make certain that we consistently earn that trust, we are dedicated to ensuring the expert, seamless delivery of high-quality products and remodeling solutions to homeowners throughout our service area. Today, we expand our home remodeling expertise across Wisconsin, Minnesota, Iowa and Illinois. With over 50,000 completed projects, we take our 2+ decades of experience to serve the communities of Minnesota, Iowa and Illinois. They can expect our highest standard of service and professionalism.

"High pressure sales person which ended up with a mismatch of the rest of my bathroom. They refuse to make it right. . I would recommend that you go with a different company. "

Karen P on November 2025


Avatar for Aqua Well & Pump Systems Inc

Aqua Well & Pump Systems Inc

4.64(
67
)
Approved Pro

Aqua Well & Pump Systems Inc

4.64(
67
)
Approved Pro
Customers say: True professional
1987 years of experience
Emergency services offered

Aqua Well & Pump Systems, Inc., is a 3rd generation; family owned & operated, well and pump service company, serving all of Southeastern Wisconsin. Our mission at Aqua is to provide our customers with a safe, reliable water supply, while safe guarding & promoting the protection of our most precious resource. To accomplish this mission, Aqua is dedicated to investing in promotion, equipment, & most of all people who share the same core values of knowledge, integrity, hard work, & honesty. Aqua provides pump & well drilling service for residential, industrial, commercial, & farm applications. services.

"They were quick and efficient"

Carol F on September 2025

Aqua Well & Pump Systems, Inc., is a 3rd generation; family owned & operated, well and pump service company, serving all of Southeastern Wisconsin. Our mission at Aqua is to provide our customers with a safe, reliable water supply, while safe guarding & promoting the protection of our most precious resource. To accomplish this mission, Aqua is dedicated to investing in promotion, equipment, & most of all people who share the same core values of knowledge, integrity, hard work, & honesty. Aqua provides pump & well drilling service for residential, industrial, commercial, & farm applications. services.

"They were quick and efficient"

Carol F on September 2025


Avatar for Bath Fitter

Bath Fitter

4.83(
48
)
Approved Pro

Bath Fitter

4.83(
48
)
Approved Pro
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
2000 years of experience

Bath Fitter offers top quality, customized bathroom renovation products and service and can complete the entire installation in one day! We provide more than just bathtub liners and bath surrounds. With more than 35 years of experience, we tailor each acrylic bathtub and shower to fit your specific bathroom. We also have a wide range of accessories including shower doors to complete your bathroom design. You get a comprehensive solution that goes beyond quick bathtub resurfacing fixes. Because measurements are taken in advance, and manufacturing is completed at our facility, we are able to install the entire one-piece seamless shower or bathtub enclosure in just one day without compromising on quality and you will get a lifetime warranty, too. Explore our bath remodeling, shower remodeling and tub-to-shower conversion services and see why a Bath Fitter, bathroom makes all the difference.

"Hire them. no problems."

Katherine V on October 2023

Bath Fitter offers top quality, customized bathroom renovation products and service and can complete the entire installation in one day! We provide more than just bathtub liners and bath surrounds. With more than 35 years of experience, we tailor each acrylic bathtub and shower to fit your specific bathroom. We also have a wide range of accessories including shower doors to complete your bathroom design. You get a comprehensive solution that goes beyond quick bathtub resurfacing fixes. Because measurements are taken in advance, and manufacturing is completed at our facility, we are able to install the entire one-piece seamless shower or bathtub enclosure in just one day without compromising on quality and you will get a lifetime warranty, too. Explore our bath remodeling, shower remodeling and tub-to-shower conversion services and see why a Bath Fitter, bathroom makes all the difference.

"Hire them. no problems."

Katherine V on October 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
2016 years of experience
Free onsite estimate

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 WireOne

WireOne

4.43(
195
)
Approved Pro

WireOne

4.43(
195
)
Approved Pro
Customers say: True professional
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
2010 years of experience

WIREONE is working to become the leading electrical contractor in the region through a customer-centric approach that provides our clients with the absolute best electrical services available. Our journeyman electricians are some of the most positively reviewed electricians in the industry. They consistently receive five-star reviews on sites such as Facebook and Google. We begin each residential service call with a client conference during which we’ll sit down with you to discuss your project and any related electrical needs. After gaining a complete understanding of your goals, we’ll perform our complimentary 57-point “Keep it Safe Inspection” to ensure that the electrical system in your home is performing safely and in conformance with local building codes. Then, before any work begins, we’ll provide you with Our Best Price. Our Best Price will be the most cost-effective way to complete your project quickly and safely. We also include a 5 year warranty on all work performed!

"It took 1hr & 15min"

Christen C on October 2025

WIREONE is working to become the leading electrical contractor in the region through a customer-centric approach that provides our clients with the absolute best electrical services available. Our journeyman electricians are some of the most positively reviewed electricians in the industry. They consistently receive five-star reviews on sites such as Facebook and Google. We begin each residential service call with a client conference during which we’ll sit down with you to discuss your project and any related electrical needs. After gaining a complete understanding of your goals, we’ll perform our complimentary 57-point “Keep it Safe Inspection” to ensure that the electrical system in your home is performing safely and in conformance with local building codes. Then, before any work begins, we’ll provide you with Our Best Price. Our Best Price will be the most cost-effective way to complete your project quickly and safely. We also include a 5 year warranty on all work performed!

"It took 1hr & 15min"

Christen C on October 2025


Avatar for Southport Home Services

Southport Home Services

5.00(
6
)
Approved Pro

Southport Home Services

5.00(
6
)
Approved Pro
2005 years of experience
Free onsite estimate

At Southport Home Services, we're A+ rated by the BBB. Our technicians are NATE certified to meet national standards of excellence, and we're a Carrier® Factory Authorized Dealer, recently cited as the top medium-sized business to work for by the Milwaukee Journal Sentinel. We treat our team well and hold them to high professional standards. Our up front, transparent pricing, great customer service, and honesty in our business practices make us the plumbing and HVAC company that you'll feel good working with on a regular basis, with 100% satisfaction guaranteed.

"He explained everything to me and was very friendly."

Gary L on December 2025

At Southport Home Services, we're A+ rated by the BBB. Our technicians are NATE certified to meet national standards of excellence, and we're a Carrier® Factory Authorized Dealer, recently cited as the top medium-sized business to work for by the Milwaukee Journal Sentinel. We treat our team well and hold them to high professional standards. Our up front, transparent pricing, great customer service, and honesty in our business practices make us the plumbing and HVAC company that you'll feel good working with on a regular basis, with 100% satisfaction guaranteed.

"He explained everything to me and was very friendly."

Gary L on December 2025


Avatar for American Standard Walk-In Tubs

American Standard Walk-In Tubs

4.24(
40
)
Approved Pro

American Standard Walk-In Tubs

4.24(
40
)
Approved Pro
Customers say: Quality work
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
1929 years of experience

American Standard upholds a longstanding history of excellence. For over 140 years, we have been a leader in providing innovative bathroom products. We have helped thousands of customers bathe in safety, comfort, and independence. Our Walk-In Tubs come with a RevitaJet™ hydrotherapy system with 44 strategically placed air and water jets for the ultimate in therapeutic comfort, and our patented Quick Drain® fast water removal system. With a lifetime warranty for the tub, installation, and labor and a strong legacy, we raise the standard for all Walk-In Tub needs. Contact us today. We offer financing to consumers and we're happy to chat more about this live!

""

Steve R on August 2024

American Standard upholds a longstanding history of excellence. For over 140 years, we have been a leader in providing innovative bathroom products. We have helped thousands of customers bathe in safety, comfort, and independence. Our Walk-In Tubs come with a RevitaJet™ hydrotherapy system with 44 strategically placed air and water jets for the ultimate in therapeutic comfort, and our patented Quick Drain® fast water removal system. With a lifetime warranty for the tub, installation, and labor and a strong legacy, we raise the standard for all Walk-In Tub needs. Contact us today. We offer financing to consumers and we're happy to chat more about this live!

""

Steve R on August 2024

...
Showing 1-10 of 279
Boiler Repair questions, answered by experts

Schedule annual inspections, check for leaks, and bleed radiators to ensure efficient operation.

There are likely dozens of HVAC repair companies that service your area, and choosing the right one can be a tricky process. To hire the right HVAC technician, we recommend reaching out to local companies and ask the following questions:

  • Are you licensed and insured?

  • Do you have any third-party certifications?

  • Do you often work on my specific type of HVAC system?

  • Do you provide any warranty for your work?

  • Do you offer maintenance contracts for ongoing savings?

  • How many years of experience do you have?

There are a couple of signs that will tell you it’s time to bleed the radiator. If the radiator is making noises, it’s typically because of trapped air, which you can release by bleeding the radiator. You can also test the radiator by turning on your heat and then placing your hand near the top and bottom of the radiator. If you feel cold spots, particularly at the top of the radiator, it’s time to bleed it.

HVAC quotes may be negotiable. It’s important to be upfront about what you need, your budget, and your expectations. However, your contractor must suggest repairs or the system they think is best for you, and those things may not be negotiable. So, when can you negotiate an HVAC quote? When installing a new system, you may not need to replace ductwork or install specialty items such as whole-home air purifiers. If your contractor is bidding on those items or others you don’t need or want, ask them for a quote on only the equipment and services you need.

Yes, cleaning a boiler is essential for its efficient and safe operation. Over time, boilers can accumulate dirt, rust, sediment, and mineral deposits, reducing efficiency, increasing energy consumption, and causing potential breakdowns. Cleaning involves removing these deposits from various components like heat exchangers, burners, and pipes. Neglecting cleaning can also lead to corrosion and decreased life span. Regular, yearly maintenance, including cleaning, ensures optimal performance, lower energy bills, and a safer heating system. It's best to consult the boiler's manual or hire a professional technician for cleaning to ensure the job is done right.

The Merrimac, WI homeowners’ guide to boiler repairs

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

What do you need done? We’ll find top pros.
  • 🌱 "Mow a small front yard"
  • 🛠 "Fix a leaking pipe under the sink"
  • 🏠 "Repair shingles on an asphalt roof"