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  • Verified reviews icon259
    Verified boiler repairs reviews

Find Boiler repair pros in Waterloo

Avatar for Clark Heating & Cooling

Clark Heating & Cooling

201 Business Park Cir
4.81(
441
)
Approved Pro

Clark Heating & Cooling

201 Business Park Cir
4.81(
441
)
Approved Pro
Customers say: Quality work
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
46 local quotes requested

Clark Heating & Cooling offers American standard & Bryant heating & cooling products. We could offer many other brands but we feel these two offer the best balance of features, benefits, reliability, warranty coverage and overall value. As we say, the bitterness of poor quality remains long after the sweetness of a low price is forgotten. We are an American standard customer care dealer which means we go above & beyond to ensure a great experience with Clark heating. We have many times been recognized as "dealer of the year" for providing unmatched service. We've accomplished this by maintaining customer satisfaction rating of over 98%. Contact us today, we'd love to make you a satisfied customer too.

"Great to work with. They were efficient and knowledgeable. They took care of the rebate for our heat pump. Only thing lacking was responsiveness to email/phone communication after the install was done. Heat pump system is working great."

Chris M on February 2024

Clark Heating & Cooling offers American standard & Bryant heating & cooling products. We could offer many other brands but we feel these two offer the best balance of features, benefits, reliability, warranty coverage and overall value. As we say, the bitterness of poor quality remains long after the sweetness of a low price is forgotten. We are an American standard customer care dealer which means we go above & beyond to ensure a great experience with Clark heating. We have many times been recognized as "dealer of the year" for providing unmatched service. We've accomplished this by maintaining customer satisfaction rating of over 98%. Contact us today, we'd love to make you a satisfied customer too.

"Great to work with. They were efficient and knowledgeable. They took care of the rebate for our heat pump. Only thing lacking was responsiveness to email/phone communication after the install was done. Heat pump system is working great."

Chris M on February 2024


Avatar for Aqua Well & Pump Systems, Inc

Aqua Well & Pump Systems, Inc

124 Oakridge Dr
4.60(
70
)
Approved Pro

Aqua Well & Pump Systems, Inc

124 Oakridge Dr
4.60(
70
)
Approved Pro
Customers say: True professional
85 local quotes requested
38 years of experience

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 KJM Plumbing

KJM Plumbing

3776 North Point Road
4.83(
24
)
Approved Pro

KJM Plumbing

3776 North Point Road
4.83(
24
)
Approved Pro
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
67 local quotes requested

We take pride in the quality of work and customer satisfaction that we give each and every customer. We are known to pay exquisite attention to detail while making customer satisfaction our top priority. 7 days a week. Call us today to learn more about how we can help you.

"I urgently needed my water softener replaced. He came the same day, made an adjustment to the tank so that the overflow faced the drain and stopped spilling brine onto the water heater. Then he returned the next day and replaced the water softener for a very reasonable price. Kurt responded quickly to texts and my needs."

Laura B on September 2023

We take pride in the quality of work and customer satisfaction that we give each and every customer. We are known to pay exquisite attention to detail while making customer satisfaction our top priority. 7 days a week. Call us today to learn more about how we can help you.

"I urgently needed my water softener replaced. He came the same day, made an adjustment to the tank so that the overflow faced the drain and stopped spilling brine onto the water heater. Then he returned the next day and replaced the water softener for a very reasonable price. Kurt responded quickly to texts and my needs."

Laura B on September 2023


Avatar for Cardinal Heating & Air Conditioning

Cardinal Heating & Air Conditioning

3361 BROOKS DR
4.88(
137
)
Approved Pro

Cardinal Heating & Air Conditioning

3361 BROOKS DR
4.88(
137
)
Approved Pro
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
163 local quotes requested

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!

"The inspection turned into a new furnace and air conditioner. I decided to take advantage of their special of $1000 off if you replace both. Mine were old enough so that I decided to replace rather than repair. Technicians were very pleasant, knowledgeable, and professional."

June G on October 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!

"The inspection turned into a new furnace and air conditioner. I decided to take advantage of their special of $1000 off if you replace both. Mine were old enough so that I decided to replace rather than repair. Technicians were very pleasant, knowledgeable, and professional."

June G on October 2025


Avatar for KETTLE MORAINE HEATING & AIR CONDITIONING LLC

KETTLE MORAINE HEATING & AIR CONDITIONING LLC

W325S1767 Mickle Rd
4.78(
129
)
Approved Pro

KETTLE MORAINE HEATING & AIR CONDITIONING LLC

W325S1767 Mickle Rd
4.78(
129
)
Approved Pro
Customers say: Quality work
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
424 local quotes requested

Kettle Moraine Heating & Air Conditioning, LLC is a third-generation family-owned business that has been serving Southeastern Wisconsin for over 35 years. Our mission is to provide our customers with peace of mind and 5-star service. We specialize in air conditioning, furnaces, boilers, ductless mini-splits, solar, backup generators, radon mitigation, plumbing and electrical services. Additionally, we are the region’s premier installer of Lennox energy-efficient heating and cooling systems and Mitsubishi ductless mini-split systems. With an unwavering commitment to our customers, you can count on us to deliver the personalized care you deserve. • 24/7 Emergency Service • Tune-Ups/Maintenance Plans • 0% Financing

"Technician Jim was not impressive. Was not confident when answering the questions I asked. Very contradicting.. Tried to sell product for items that were not even in need of repair. Spoke negatively about the company and made excuses as to why he could not perform his job due to lack of information from dispatch or technician manager. Said he would follow up, I never heard from him. Blessing to me, I decided to go with another HVAC company. I typically would not put names out there, but please be careful if you get this gentleman as a technician."

Lindsey M on December 2022

Kettle Moraine Heating & Air Conditioning, LLC is a third-generation family-owned business that has been serving Southeastern Wisconsin for over 35 years. Our mission is to provide our customers with peace of mind and 5-star service. We specialize in air conditioning, furnaces, boilers, ductless mini-splits, solar, backup generators, radon mitigation, plumbing and electrical services. Additionally, we are the region’s premier installer of Lennox energy-efficient heating and cooling systems and Mitsubishi ductless mini-split systems. With an unwavering commitment to our customers, you can count on us to deliver the personalized care you deserve. • 24/7 Emergency Service • Tune-Ups/Maintenance Plans • 0% Financing

"Technician Jim was not impressive. Was not confident when answering the questions I asked. Very contradicting.. Tried to sell product for items that were not even in need of repair. Spoke negatively about the company and made excuses as to why he could not perform his job due to lack of information from dispatch or technician manager. Said he would follow up, I never heard from him. Blessing to me, I decided to go with another HVAC company. I typically would not put names out there, but please be careful if you get this gentleman as a technician."

Lindsey M on December 2022


Avatar for Premier Home Pros, LLC

Premier Home Pros, LLC

30W100 Butterfield Road
4.32(
67
)
Approved Pro

Premier Home Pros, LLC

30W100 Butterfield Road
4.32(
67
)
Approved Pro
Customers say: Quick response
170 local quotes requested
3 years of experience

Premier Home Pros specializes in full bathroom remodels and installs finely crafted bathtubs and showers in as little as one day. With maintenance-free solutions and a variety of stunning designs to match your style, getting your dream bathroom has never been easier and more affordable. All of our products our backed by a full lifetime and service warranty program to offer customers the last system they will ever need. Get a FREE design consultation and transform your bathroom into a space that's not only functional, beautiful.

"The salesman was knowledgeable, professional and explained everything about the shower install well. I gave him a deposit of $3200. I did not hear from anyone so after 3 days I called but no one returned my call. Called back again a week later to cancel the order. Left a long message stating I did not want to cancel the order but was concerned because no one returned my calls. Finally, received a call from a regional manager. He connected me to a local manager who set up an install date a week later. The installers were polite and professional. Gave me some helpful advise. Job was completed in less than a day. The shower door came a week later. I have had the shower for over a month. It is beautiful. I love it. Quality work. I would highly recommend Premier Home Pros."

Loraine G on October 2025

Premier Home Pros specializes in full bathroom remodels and installs finely crafted bathtubs and showers in as little as one day. With maintenance-free solutions and a variety of stunning designs to match your style, getting your dream bathroom has never been easier and more affordable. All of our products our backed by a full lifetime and service warranty program to offer customers the last system they will ever need. Get a FREE design consultation and transform your bathroom into a space that's not only functional, beautiful.

"The salesman was knowledgeable, professional and explained everything about the shower install well. I gave him a deposit of $3200. I did not hear from anyone so after 3 days I called but no one returned my call. Called back again a week later to cancel the order. Left a long message stating I did not want to cancel the order but was concerned because no one returned my calls. Finally, received a call from a regional manager. He connected me to a local manager who set up an install date a week later. The installers were polite and professional. Gave me some helpful advise. Job was completed in less than a day. The shower door came a week later. I have had the shower for over a month. It is beautiful. I love it. Quality work. I would highly recommend Premier Home Pros."

Loraine G on October 2025


Avatar for Southport Home Services

Southport Home Services

3304 Dairy Dr.
5.00(
5
)
Approved Pro

Southport Home Services

3304 Dairy Dr.
5.00(
5
)
Approved Pro
119 local quotes requested
20 years of experience

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.

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.


Basement Repair Specialists, LLC

1400 S. Van Dyke Rd.
4.56(
35
)
Approved Pro

Basement Repair Specialists, LLC

1400 S. Van Dyke Rd.
4.56(
35
)
Approved Pro
Super Service Award
Customers say: Quality work
118 local quotes requested
16 years of experience

At Basement Repair Specialists, we liked the idea of giving people a good deal so much that we trademarked it! That’s right, in October 2014 the US Patent and Trademark Office granted Basement Repair Specialists a trademark for our corporate motto “A Great Job at a Great Price®” From our first days in business, Basement Repair Specialists has been committed to offering excellent work at a reasonable price. Treating customers fairly is a part of our company culture, and you will be very happy you selected Basement Repair Specialists for your project. We offer the following services: Repair of failing, leaning, or collapsed basement walls Water control, sump pumps, and general drainage issues Helical piers, resistance piers and other solutions to settling foundations and footings Egress windows Dehumidifiers

"I could not believe what they did in only two days. It is so nice to not have water anymore. The salesman really knew and understood the project and what it would take to get it done."

Faith N on September 2024

At Basement Repair Specialists, we liked the idea of giving people a good deal so much that we trademarked it! That’s right, in October 2014 the US Patent and Trademark Office granted Basement Repair Specialists a trademark for our corporate motto “A Great Job at a Great Price®” From our first days in business, Basement Repair Specialists has been committed to offering excellent work at a reasonable price. Treating customers fairly is a part of our company culture, and you will be very happy you selected Basement Repair Specialists for your project. We offer the following services: Repair of failing, leaning, or collapsed basement walls Water control, sump pumps, and general drainage issues Helical piers, resistance piers and other solutions to settling foundations and footings Egress windows Dehumidifiers

"I could not believe what they did in only two days. It is so nice to not have water anymore. The salesman really knew and understood the project and what it would take to get it done."

Faith N on September 2024


Avatar for JB Mechanical, LLC

JB Mechanical, LLC

119 West Water Street
4.88(
30
)
Approved Pro

JB Mechanical, LLC

119 West Water Street
4.88(
30
)
Approved Pro
Customers say: Quality work
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
57 local quotes requested

JB Mechanical, LLC, is your premier choice for all of your HVAC needs in Beaver Dam, Wisconsin and surrounding areas. No project is too big or too small, so call today and let us put our experience to work for you!

"Prompt service, courteous technucians"

Sandra G on March 2023

JB Mechanical, LLC, is your premier choice for all of your HVAC needs in Beaver Dam, Wisconsin and surrounding areas. No project is too big or too small, so call today and let us put our experience to work for you!

"Prompt service, courteous technucians"

Sandra G on March 2023


Rising Sun Comfort Solutions LLC

5.00(
3
)

Rising Sun Comfort Solutions LLC

5.00(
3
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Rising Sun Comfort Solutions LLC is newly formed and ready to tackle all of your HVAC needs. We are family owned and operated with a focus on honest service and quality work. With almost 25 years of HVAC employment, our small but experienced team can do it all! From tiny homes to high-rises and everything in between….Rising Sun Comfort Solutions LLC wants to be your heating and cooling professionals. “People over Profit…Always the Right Price!” This is our motto and we stand by it, test it out and give us a call. Thanks for your time!

"We recently noticed a gas leak coming from our furnace and called Rising Sun right away. They came out very promptly to take care of it. They were extremely professional and friendly throughout the whole process. Jamie is truly the best — knowledgeable, kind, and efficient. We felt safe and well taken care of thanks to their quick response and excellent service. We highly recommend Rising Sun!"

Ashley N on May 2025

Rising Sun Comfort Solutions LLC is newly formed and ready to tackle all of your HVAC needs. We are family owned and operated with a focus on honest service and quality work. With almost 25 years of HVAC employment, our small but experienced team can do it all! From tiny homes to high-rises and everything in between….Rising Sun Comfort Solutions LLC wants to be your heating and cooling professionals. “People over Profit…Always the Right Price!” This is our motto and we stand by it, test it out and give us a call. Thanks for your time!

"We recently noticed a gas leak coming from our furnace and called Rising Sun right away. They came out very promptly to take care of it. They were extremely professional and friendly throughout the whole process. Jamie is truly the best — knowledgeable, kind, and efficient. We felt safe and well taken care of thanks to their quick response and excellent service. We highly recommend Rising Sun!"

Ashley N on May 2025

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FAQs for boiler repair projects in Waterloo, WI

The average cost to install a new water heater is around $1,300, but you can expect to pay between $875 and $1,750, depending on the kind of water heater, the size of the unit, and the professional chosen to complete the work. Tankless water heaters can push your price higher, as installation is more complicated, with prices as high as $3,500. The location and accessibility of your water heater will play a role in the project cost, as those sitting in tight spaces like a crawl space will drive up your labor costs.

Yes, most states require plumbers to be licensed, and for good reason. Hiring an unlicensed plumber could lead to poor quality work, costly future expenses, and potential code violations. 

As you browse our pro listings, take note of the “Angi Approved” badge. Angi Approved businesses meet our standards for certification which include: 

  • The owner, principal, or relevant manager passed a criminal background check

  • Required to have applicable state and local licenses

  • Maintain an average star rating of 3.0 or better on our network, if they have at least one review

  • Paying to advertise their services

  • Meeting any other eligibility criteria required by Angi

Keep in mind licensing is different from certifications. A license is a legal requirement to operate a business, while certifications are voluntary.

Yes, most states require HVAC technicians to be certified, and for good reason. Hiring an unlicensed HVAC technician could lead to poor quality work, costly future expenses, and potential code violations. 

As you browse our pro listings, take note of the “Angi Approved” badge. Angi Approved businesses meet our standards for certification which include: 

  • The owner, principal, or relevant manager passed a criminal background check

  • Required to have applicable state and local licenses

  • Maintain an average star rating of 3.0 or better on our network, if they have at least one review

  • Paying to advertise their services

  • Meeting any other eligibility criteria required by Angi

Keep in mind licensing is different from certifications. A license is a legal requirement to operate a business, while certifications are voluntary.

It is very difficult and dangerous to install your own water heater, so we strongly recommend against tackling this as a DIY project. Not only will you need to wire your water heater, but you’ll also need to connect plumbing to the intake and outlet. Sweating copper pipes and connecting wiring properly are skills most DIYers don’t have, and even if you do feel confident you can do it, working with water and electricity always leaves the potential for electrocution. Hiring a local water heater installer is well worth the investment.

The average cost to hire a plumber is around $100 an hour but can vary between $45 and $200 an hour depending on the plumber’s experience and the repair that you need. It’s also important to note that these prices can go up on holidays, and emergency plumber rates average $150 per hour, in addition to a flat-rate trip fee of $100 to $350

The Waterloo, 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.
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