Top-rated heating and air conditioning pros.

Get matched with top heating and air conditioning pros in Delavan, WI

Enter your zip and get matched with up to 5 pros

TRUSTED BY DELAVAN, WI HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon86
    Verified heating and air conditioning services reviews

Find Heating and air conditioning pros in Delavan

Avatar for John B Ventures LLC

John B Ventures LLC

4.88(
213
)
Approved Pro

John B Ventures LLC

4.88(
213
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
Free onsite estimate

Project maintenance and installation - John B Ventures LLC is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have years of hands-on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

"John was incredibly responsive and helpful. He accommodated my schedule and worked with me on a non straightforward project. He suggested solutions that recognized budget and approach. He was very diligent and helpful. "

Reid B on December 2025

Project maintenance and installation - John B Ventures LLC is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have years of hands-on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

"John was incredibly responsive and helpful. He accommodated my schedule and worked with me on a non straightforward project. He suggested solutions that recognized budget and approach. He was very diligent and helpful. "

Reid B on December 2025


Avatar for KETTLE MORAINE HEATING & AIR CONDITIONING LLC

KETTLE MORAINE HEATING & AIR CONDITIONING LLC

4.88(
119
)
Approved Pro

KETTLE MORAINE HEATING & AIR CONDITIONING LLC

4.88(
119
)
Approved Pro
Customers say: Super punctual
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
38 years of experience

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

"This company is amazing! I would recommend them 10times over. The job was gone quickly and with such precision. They care about their customers and will go to lengths that most companies, nowadays, have forgotten. The owner himself is not afraid to work hard and do what needs to be done. Sherry was beyond helpful and supportive throughout the process. If you want the job done right, this is your company."

Nichole S on November 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

"This company is amazing! I would recommend them 10times over. The job was gone quickly and with such precision. They care about their customers and will go to lengths that most companies, nowadays, have forgotten. The owner himself is not afraid to work hard and do what needs to be done. Sherry was beyond helpful and supportive throughout the process. If you want the job done right, this is your company."

Nichole S on November 2022


Avatar for ThermaTek Heating and Air

ThermaTek Heating and Air

4.73(
326
)
Approved Pro

ThermaTek Heating and Air

4.73(
326
)
Approved Pro
Super Service Award
Customers say: Quick response
7 years of experience
Free onsite estimate

Welcome to ThermaTek Heating and Air. We are excited to exceed your expectations! As industry professionals, we will handle all your needs with the high-quality expertise and attention to detail your home or business deserves. We offer competitive prices and customer satisfaction is our number one priority. Call us today for your free estimate!

"Jeremy explained completely why my current furnace should be replaced."

Bill L on December 2025

Welcome to ThermaTek Heating and Air. We are excited to exceed your expectations! As industry professionals, we will handle all your needs with the high-quality expertise and attention to detail your home or business deserves. We offer competitive prices and customer satisfaction is our number one priority. Call us today for your free estimate!

"Jeremy explained completely why my current furnace should be replaced."

Bill L on December 2025


Avatar for Fab Tek Custom Sheet Metal & HVAC, LLC

Fab Tek Custom Sheet Metal & HVAC, LLC

4.94(
9
)
Approved Pro

Fab Tek Custom Sheet Metal & HVAC, LLC

4.94(
9
)
Approved Pro
Customers say: Quick response
6 years of experience
Free onsite estimate

An HVAC system that works well ensures you get better performance that remains easy on the energy costs. Let our team optimize your property. When you hire us, you can always expect quick project completion and quality of work that generates lasting results. FabTek Custom Sheet Metal & HVAC is there when you need us. We serve Milton & Janesville and the surrounding areas and are available Monday-Friday, from 8:00 a.m.-5:00 p.m. Call us for a written estimate and learn how we will improve your property.

"I couldn't be more thrilled with the service I received from Mark at Fabtek! From the very first consultation to the final installation of my new AC unit and furnace, Mark delivered top-tier professionalism, craftsmanship, and care. He took the time to walk me through all my options, answered every question patiently, and made sure I felt confident in my choices. The installation itself was smooth, efficient, and done to perfection. You can tell Mark takes great pride in his work—everything looks clean, functions flawlessly, and was completed right on schedule. He even went above and beyond to ensure the space was tidy when he finished. And the pricing? Incredibly affordable, especially considering the quality of work and equipment. No hidden fees, no surprises—just honest, excellent service. If you're looking for someone dependable, skilled, and fairly priced, look no further than Mark at Fabtek. Highly recommended! "

LYLE M on July 2025

An HVAC system that works well ensures you get better performance that remains easy on the energy costs. Let our team optimize your property. When you hire us, you can always expect quick project completion and quality of work that generates lasting results. FabTek Custom Sheet Metal & HVAC is there when you need us. We serve Milton & Janesville and the surrounding areas and are available Monday-Friday, from 8:00 a.m.-5:00 p.m. Call us for a written estimate and learn how we will improve your property.

"I couldn't be more thrilled with the service I received from Mark at Fabtek! From the very first consultation to the final installation of my new AC unit and furnace, Mark delivered top-tier professionalism, craftsmanship, and care. He took the time to walk me through all my options, answered every question patiently, and made sure I felt confident in my choices. The installation itself was smooth, efficient, and done to perfection. You can tell Mark takes great pride in his work—everything looks clean, functions flawlessly, and was completed right on schedule. He even went above and beyond to ensure the space was tidy when he finished. And the pricing? Incredibly affordable, especially considering the quality of work and equipment. No hidden fees, no surprises—just honest, excellent service. If you're looking for someone dependable, skilled, and fairly priced, look no further than Mark at Fabtek. Highly recommended! "

LYLE M on July 2025


Avatar for Master Services, Inc.

Master Services, Inc.

4.31(
45
)
Approved Pro

Master Services, Inc.

4.31(
45
)
Approved Pro
Customers say: Super punctual
35 years of experience
Free onsite estimate

Master Services is a world-class provider of residential home services such as: Plumbing, Heating, Air Conditioning, Indoor Air Quality and Drain Cleaning. These Products and services are for improving comfort, reliability, peace of mind, plus cleaner, fresher, and healthier homes. In addition to scheduled service checks, repairing of existing equipment, and installation of new equipment, we can help you find ways to reduce your energy bills through a thorough cost-benefits analysis. We have an extensive history of repair service on all brands of plumbing, central air conditioning and heating systems. Master Services, Inc provides quality workmanship with professional, dependable, and courteous service with our "Fixed Right or It's FREE!"™ We offer 24-hour emergency service so that you can count on us to be there when you need us the most. Our certified technicians use state-of-the-art technology to diagnose and repair existing systems and always use the finest new equipment for installations in the industry. Furthermore, we have a patented Straight Forward Pricing Guide™ so you know what the price is before we do the work and you are never charged by the hour. How many companies are willing to show you their price books? You can count on Master Services to do the job right. We service all brands of plumbing, heating and air conditioning equipment.

"This company promised all kinds of things that were not true. The financing was and is a ridiculous mess. Worst of all they said my bill would go down guaranteed but it went UP! Please go elsewhere. "

Allison R on December 2025

Master Services is a world-class provider of residential home services such as: Plumbing, Heating, Air Conditioning, Indoor Air Quality and Drain Cleaning. These Products and services are for improving comfort, reliability, peace of mind, plus cleaner, fresher, and healthier homes. In addition to scheduled service checks, repairing of existing equipment, and installation of new equipment, we can help you find ways to reduce your energy bills through a thorough cost-benefits analysis. We have an extensive history of repair service on all brands of plumbing, central air conditioning and heating systems. Master Services, Inc provides quality workmanship with professional, dependable, and courteous service with our "Fixed Right or It's FREE!"™ We offer 24-hour emergency service so that you can count on us to be there when you need us the most. Our certified technicians use state-of-the-art technology to diagnose and repair existing systems and always use the finest new equipment for installations in the industry. Furthermore, we have a patented Straight Forward Pricing Guide™ so you know what the price is before we do the work and you are never charged by the hour. How many companies are willing to show you their price books? You can count on Master Services to do the job right. We service all brands of plumbing, heating and air conditioning equipment.

"This company promised all kinds of things that were not true. The financing was and is a ridiculous mess. Worst of all they said my bill would go down guaranteed but it went UP! Please go elsewhere. "

Allison R on December 2025


Avatar for S.R.M Contracting

S.R.M Contracting

4.30(
20
)
Approved Pro

S.R.M Contracting

4.30(
20
)
Approved Pro
Customers say: Quick response
Free onsite estimate
Emergency services offered

S.R.M CONTRACTING has been in business for the last 3 years. Any job I take on. I work at it as if I was working on my own stuff. I am honest and to the point. I will not waste your money or my time. We have the experience and dedication to get the job done right! We guarantee your satisfaction, and we won't leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Call or click for your FREE estimate today!

"Excellent quality. Highly responsive and accommodating to our requests. The final cost matched the original quote."

Matt A on October 2024

S.R.M CONTRACTING has been in business for the last 3 years. Any job I take on. I work at it as if I was working on my own stuff. I am honest and to the point. I will not waste your money or my time. We have the experience and dedication to get the job done right! We guarantee your satisfaction, and we won't leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Call or click for your FREE estimate today!

"Excellent quality. Highly responsive and accommodating to our requests. The final cost matched the original quote."

Matt A on October 2024


Avatar for Walnut Creek Designs Inc.

Walnut Creek Designs Inc.

5.00(
2
)
Approved Pro

Walnut Creek Designs Inc.

5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
4 years of experience

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 the start to the 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.

"I originally contacted Jay Cope of Abate Retoration. I had water coming in my basement from a crawlspace and basement windows, that I had another party attempt to fix. Adrian and Jay work together. These guys are amazing. The stiuation was analyzed, and quoted in a few days time. I was sold on the service the first day. They also did an encapsulation and covering of 9" tiles on an upstairs floor. They worked super hard and put in long days, as I had an environmental inspection deadline to meet. I would certainly recommend their services to anyone. Thanks so much to these 2 guys and their crew members. After running my own service business for almost 40 years, I am very pleased to have been served the way I did my cusomers."

Bill S on March 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 the start to the 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.

"I originally contacted Jay Cope of Abate Retoration. I had water coming in my basement from a crawlspace and basement windows, that I had another party attempt to fix. Adrian and Jay work together. These guys are amazing. The stiuation was analyzed, and quoted in a few days time. I was sold on the service the first day. They also did an encapsulation and covering of 9" tiles on an upstairs floor. They worked super hard and put in long days, as I had an environmental inspection deadline to meet. I would certainly recommend their services to anyone. Thanks so much to these 2 guys and their crew members. After running my own service business for almost 40 years, I am very pleased to have been served the way I did my cusomers."

Bill S on March 2023


Avatar for Sears Home Services of Milwaukee

Sears Home Services of Milwaukee

5.00(
1
)
Approved Pro

Sears Home Services of Milwaukee

5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
33 years of experience

Sears Home Services has helped consumers transform their homes for over 100 years. Trust our experts to replace, repair or maintain your heating and cooling systems. Right now, you can save $325 on a new HVAC purchase of $1,500 or more. Restrictions apply. And, if you need HVAC repair or maintenance, ask about our HVAC Savings Program. Every paid HVAC repair and maintenance service with Sears Home Services earns you dollar for dollar savings towards your next HVAC replacement, up to 10% of your new unit purchase price.

"They were on-time, and went above and beyond to make sure everything was addressed."

William B on January 2018

Sears Home Services has helped consumers transform their homes for over 100 years. Trust our experts to replace, repair or maintain your heating and cooling systems. Right now, you can save $325 on a new HVAC purchase of $1,500 or more. Restrictions apply. And, if you need HVAC repair or maintenance, ask about our HVAC Savings Program. Every paid HVAC repair and maintenance service with Sears Home Services earns you dollar for dollar savings towards your next HVAC replacement, up to 10% of your new unit purchase price.

"They were on-time, and went above and beyond to make sure everything was addressed."

William B on January 2018


Sears Home Services- Milwaukee HVAC

New on AngiNew on Angi
Approved Pro

Sears Home Services- Milwaukee HVAC

New on AngiNew on Angi
Approved Pro
132 years of experience

Transform Home Improvements has been helping homeowners turn their improvement dreams into reality for more than 20 years. We provide a complete remodel solution, from selecting and ordering materials to installation and beyond with expert, dedicated support every step of the way. Need a complete overhaul or just updating your shower or vanity? With our robust financing options* and a full catalog of material selections to meet every budget, schedule your no-obligation in-home consult to see just how affordable your dream bathroom can be. Every project comes with our satisfaction guarantee and applicable multi-year warranties. Make this your easiest improvement project yet with Transform Home Improvements.

Transform Home Improvements has been helping homeowners turn their improvement dreams into reality for more than 20 years. We provide a complete remodel solution, from selecting and ordering materials to installation and beyond with expert, dedicated support every step of the way. Need a complete overhaul or just updating your shower or vanity? With our robust financing options* and a full catalog of material selections to meet every budget, schedule your no-obligation in-home consult to see just how affordable your dream bathroom can be. Every project comes with our satisfaction guarantee and applicable multi-year warranties. Make this your easiest improvement project yet with Transform Home Improvements.


Avatar for Adam's Water Treatment Inc

Adam's Water Treatment Inc

5.00(
157
)

Adam's Water Treatment Inc

5.00(
157
)
Customers say: Quick response
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers

We have been in the water treatment business since 1989, we offer very fair pricing, free estimates and free water analysis. Active military families receive free service calls. We are pleased to announce that we won the Angie's List 2012 and 2013 and 2014 Super Service Award.

"Set up was done nice and clean."

Dan S on June 2023

We have been in the water treatment business since 1989, we offer very fair pricing, free estimates and free water analysis. Active military families receive free service calls. We are pleased to announce that we won the Angie's List 2012 and 2013 and 2014 Super Service Award.

"Set up was done nice and clean."

Dan S on June 2023

...
Showing 1-10 of 165
Heating and Air Conditioning questions, answered by experts

Replacing both an AC and a furnace takes a full day on average, ranging from eight to 12 hours. The process involves removing the old units, installing the new ones, and ensuring all connections are properly made. If both systems are being replaced simultaneously, it can take longer than installing a furnace alone, so plan accordingly.

If your AC suddenly stops working, the first thing to check is your thermostat settings. Ensure the thermostat is set to the appropriate temperature and mode (cooling). Sometimes, a simple adjustment or replacing the batteries in the thermostat can resolve the issue. If that’s not the issue, look to see if the circuit breaker tripped. These basic checks can often identify simple fixes before you need to call for professional assistance.

Most AC repair technicians will take between two and six hours to carry out repairs, depending on the work needed and the accessibility of the unit. For example, recharging refrigerant lines should take one to two hours to service, while replacing a compressor, blower fan, or other major components can take five to eight hours. You can ask your AC repair technician how long they expect the job to take, but just in case, you should plan on being home and available for most of the day.

Traditional central air conditioning systems require ductwork to circulate air throughout the home. Alternatively, you can add air conditioning with a mini-split ductless air conditioning system, which can be just as energy efficient as a central air conditioner. This type of system consists of two units–an outside unit that holds the compressor and condenser and an indoor unit that holds an air-handler. With multi-zone ductless systems, there are multiple indoor air handlers tied to a single outdoor compressor/condenser, allowing the system to cool multiple rooms.

A blocked return air vent can cause your HVAC system to work much harder and, therefore, less efficiently. The result is higher utility bills and poorer air quality. A blocked return air vent can also cause unpleasant dust, dander, and odors to linger in your home’s air.

The Delavan, WI homeowners’ guide to heating and air conditioning services

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"