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    Average homeowner rating
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    Verified boiler repairs reviews

Find Boiler repair pros in Prairie Du Sac

Avatar for Cardinal Heating & Air Conditioning

Cardinal Heating & Air Conditioning

4.88(
140
)
Approved Pro

Cardinal Heating & Air Conditioning

4.88(
140
)
Approved Pro
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
160 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!

"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 Southport Home Services

Southport Home Services

5.00(
5
)
Approved Pro

Southport Home Services

5.00(
5
)
Approved Pro
117 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.


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
190 local quotes requested

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


Adler Plumbing, LLC

New on AngiNew on Angi
Approved Pro

Adler Plumbing, LLC

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

Welcome to Adler Plumbing, LLC! In business since 2023, we are a full service plumbing company who takes great pride in the quality of our work and guarantees customer satisfaction. We specialize in all service and repair for both residential and commercial properties, and no job is too big or too small. Serving Cross Plains and its surrounding areas, be sure to give us a call today!

Welcome to Adler Plumbing, LLC! In business since 2023, we are a full service plumbing company who takes great pride in the quality of our work and guarantees customer satisfaction. We specialize in all service and repair for both residential and commercial properties, and no job is too big or too small. Serving Cross Plains and its surrounding areas, be sure to give us a call today!


Affordable Quality Heating & Air Conditioning, LLC

5.00(
6
)
Approved Pro

Affordable Quality Heating & Air Conditioning, LLC

5.00(
6
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
14 local quotes requested

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!

"Professional, efficient, friendly, and thorough. Highly recommend Ben and Affordable Quality Heating and AC."

Mike S on October 2024

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!

"Professional, efficient, friendly, and thorough. Highly recommend Ben and Affordable Quality Heating and AC."

Mike S on October 2024


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
51 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 Hooper Corporation

Hooper Corporation

5.00(
4
)
Approved Pro

Hooper Corporation

5.00(
4
)
Approved Pro
47 local quotes requested
8 years of experience

When your pipes freeze or furnace quits, our work begins. Hooper’s service technicians arrive equipped with fully stocked service vans and are ready to roll at a moment’s notice. We’ve been caring for customers in the Madison area since 1913 and offer 24-hour residential and commercial service. You can rely on Hooper for all your plumbing, heating and cooling, and fire protection needs. When you need a trusted service partner, Hooper is here.

"We hired Hopper to replace a a 19 yo central AC system. They suggested a solution that saved was 14.3% less than ordering new system from the manufacter. And more importantly they had it installed 2 days later. Hooper is a well establised company that has earned its good reputation."

Fred C on June 2025

When your pipes freeze or furnace quits, our work begins. Hooper’s service technicians arrive equipped with fully stocked service vans and are ready to roll at a moment’s notice. We’ve been caring for customers in the Madison area since 1913 and offer 24-hour residential and commercial service. You can rely on Hooper for all your plumbing, heating and cooling, and fire protection needs. When you need a trusted service partner, Hooper is here.

"We hired Hopper to replace a a 19 yo central AC system. They suggested a solution that saved was 14.3% less than ordering new system from the manufacter. And more importantly they had it installed 2 days later. Hooper is a well establised company that has earned its good reputation."

Fred C on June 2025


Avatar for RUAH HEATING AND COOLING LLC

RUAH HEATING AND COOLING LLC

5.00(
3
)
Approved Pro

RUAH HEATING AND COOLING LLC

5.00(
3
)
Approved Pro
45 local quotes requested
5 years of experience

Faith-based, family owned residential HVAC Contractor. Specializing in residential sales and service of forced air, ductless and hydronic systems. Dedicated to serving the community through honesty and affordable pricing. Come and see. Call ir email us today, we would love to hear from you. 715-396-1381 or [email protected]

"He was very prompt, as well as conscientious and trustworthy."

Debra L on October 2025

Faith-based, family owned residential HVAC Contractor. Specializing in residential sales and service of forced air, ductless and hydronic systems. Dedicated to serving the community through honesty and affordable pricing. Come and see. Call ir email us today, we would love to hear from you. 715-396-1381 or [email protected]

"He was very prompt, as well as conscientious and trustworthy."

Debra L on October 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
188 local quotes requested

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 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
31283 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

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Boiler Repair questions, answered by experts

One of the most common signs you’re dealing with a bad thermocouple is the pilot light for the water heater will continuously go out. For example, you may light the pilot light and then have to re-light it a few days later. You can also look at the thermocouple for a visual inspection. If you notice discoloration, cracks, holes, or other damage, then you know it needs replacing.

Properly maintained stucco can enhance insulation, reducing energy loss.

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?

Always consult your manual for specific pressure numbers. Many expansion tanks come pre-pressurized at a specific PSI range, anywhere from 12 to 40 PSI, designed for a range of home boilers. You should not have to pressurize an expansion tank yourself, only the boiler system. If your system has a tank that needs to be manually pressurized, this is generally a job for professionals and their tools.

Generally speaking, yes, turning one radiator off does save some money, especially if the system is a little older—so long as you’re not cranking up the dial on the ones you leave on. But some HVAC specialists argue that keeping your entire system on ensures that your boiler stays efficient. After all, it’s rated to fit your home and heats the amount of water your heating system needs. This could be the case if you have a new system. However, turning radiators off in unused rooms lowers the amount of hot water you need.

The Prairie Du Sac, WI homeowners’ guide to boiler repairs

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