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  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon167
    Verified heating and air conditioning services reviews

Find Heating and air conditioning pros in Janesville

Avatar for Master Services, Inc.

Master Services, Inc.

4.39(
44
)
Approved Pro

Master Services, Inc.

4.39(
44
)
Approved Pro
Customers say: Super punctual
87 local quotes requested
35 years of experience

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.

"Master Services installed a new gas furnace for us 3 years ago. We have had them come each year since to check our furnace . Each technician has been very knowledgeable. Recently our thermostat failed and they were quick to schedule us in and replace. Very happy with their response."

Diane B on November 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.

"Master Services installed a new gas furnace for us 3 years ago. We have had them come each year since to check our furnace . Each technician has been very knowledgeable. Recently our thermostat failed and they were quick to schedule us in and replace. Very happy with their response."

Diane B on November 2025


Avatar for ThermaTek Heating and Air

ThermaTek Heating and Air

4.73(
324
)
Approved Pro

ThermaTek Heating and Air

4.73(
324
)
Approved Pro
Super Service Award
Customers say: Quick response
92 local quotes requested
7 years of experience

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!

"Within an hour Therma Tek responded and had our unit fix! Fast, reliable and friendly. Highly recommend! Jeremy and Darren are awesome!"

Michael P 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!

"Within an hour Therma Tek responded and had our unit fix! Fast, reliable and friendly. Highly recommend! Jeremy and Darren are awesome!"

Michael P on December 2025


Avatar for All Comfort Services

All Comfort Services

5.00(
6
)
Approved Pro

All Comfort Services

5.00(
6
)
Approved Pro
88 local quotes requested
52 years of experience

All Comfort Services is a 50+ year old employee-owned heating, cooling, plumbing, and electrical contractor serving residential and commercial customers in Dane and parts of Rock, Columbia, and Jefferson counties. We may need to confirm a specific zip code that we service. Our team understands that when you call a local electrician, you need a trained, certified, and insured professional who will arrive on time and be ready to provide the solutions you need. Our repair dispatch fee is $149.

"They explained me that the service was not needed, I'm very impressed and thankful for explaining me the situation."

Candace B on October 2025

All Comfort Services is a 50+ year old employee-owned heating, cooling, plumbing, and electrical contractor serving residential and commercial customers in Dane and parts of Rock, Columbia, and Jefferson counties. We may need to confirm a specific zip code that we service. Our team understands that when you call a local electrician, you need a trained, certified, and insured professional who will arrive on time and be ready to provide the solutions you need. Our repair dispatch fee is $149.

"They explained me that the service was not needed, I'm very impressed and thankful for explaining me the situation."

Candace B on October 2025


Avatar for Rock Valley Services, Inc.

Rock Valley Services, Inc.

4.94(
9
)
Approved Pro

Rock Valley Services, Inc.

4.94(
9
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
22 years of experience

Rock Valley Services, Inc., is a locally owned and operated HVAC company that has been proudly serving Rock county for over 15 years. We are a residential heating and air conditioning contractor that provides exceptional quality and workmanship with every project we take on. Currently, we do not work on mobile homes and apologize for the inconvenience. Call today to schedule your appointment; we look forward to meeting you!

"Great company , great prices, great service."

Evelyn M on October 2017

Rock Valley Services, Inc., is a locally owned and operated HVAC company that has been proudly serving Rock county for over 15 years. We are a residential heating and air conditioning contractor that provides exceptional quality and workmanship with every project we take on. Currently, we do not work on mobile homes and apologize for the inconvenience. Call today to schedule your appointment; we look forward to meeting you!

"Great company , great prices, great service."

Evelyn M on October 2017


Avatar for Southport Home Services

Southport Home Services

5.00(
5
)
Approved Pro

Southport Home Services

5.00(
5
)
Approved Pro
107 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 S.R.M Contracting

S.R.M Contracting

3.94(
16
)
Approved Pro

S.R.M Contracting

3.94(
16
)
Approved Pro
Customers say: Quality work
917 local quotes requested
Free onsite estimate

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!

"No-show. He forgot."

Erik S on October 2025

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!

"No-show. He forgot."

Erik S on October 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
340 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

"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 Clark Heating & Cooling

Clark Heating & Cooling

4.90(
423
)
Approved Pro

Clark Heating & Cooling

4.90(
423
)
Approved Pro
Customers say: True professional
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
52 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 Sentri Homes

Sentri Homes

No reviews yet

Sentri Homes

No reviews yet
279 local quotes requested

Sentri Homes is a full-service contractor delivering high-end home additions, whole-home remodels, new custom builds, luxury kitchens, structural framing, roof replacements, and every major renovation. We assign a dedicated project manager to every job, deliver meticulous craftsmanship with clear communication, and back our work with an industry-leading warranty to ensure complete peace of mind on your largest investments. Our in-house team of licensed builders and master craftsmen consistently earns 5-star reviews by turning big visions into stunning, high-value homes—when you need one trusted partner who truly does it all, we’re the proven choice.

Sentri Homes is a full-service contractor delivering high-end home additions, whole-home remodels, new custom builds, luxury kitchens, structural framing, roof replacements, and every major renovation. We assign a dedicated project manager to every job, deliver meticulous craftsmanship with clear communication, and back our work with an industry-leading warranty to ensure complete peace of mind on your largest investments. Our in-house team of licensed builders and master craftsmen consistently earns 5-star reviews by turning big visions into stunning, high-value homes—when you need one trusted partner who truly does it all, we’re the proven choice.


Motivated entrepreneur seeking leads to grow my business, focused,determined, and willing to go the extra mile to succeed.

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Heating and Air Conditioning questions, answered by experts

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.

You can protect your air conditioner in the winter by turning off the power at the thermostat and performing routine HVAC maintenance in the spring. Regular maintenance, cleaning, and repair of your AC unit helps protect it and extend its life span. If you have a window AC unit, remove it from the window and store it in a dry place during the winter. Window units cannot withstand freezing temperatures. Keeping them in your window also allows cold air to seep into your home.

Window ACs use 500 to 1,400 watts per hour of electricity, while mini-splits use 500 to 700 watts per hour. However, if you need to cool multiple zones in your house, your mini-split can use as much as 2,000 watts per hour. How often you run your system will impact how much electricity you use (and how much you pay per month).

NATE (North American Technician Excellence) certification is not legally required for HVAC technicians in most areas, but hiring a professional with this certification is highly recommended. NATE-certified technicians demonstrated their expertise and proficiency in different types of HVAC systems, offering assurance of quality service. It's a voluntary certification, yet it indicates a commitment to professionalism and ongoing training. Choosing a NATE-certified technician often means you're working with someone who is up-to-date on industry standards and best practices, which can lead to better service, energy efficiency, and long-term cost savings.

The cost to add Freon to an AC ranges from $100 to $350. It can increase up to $600 for large AC units requiring much more coolant. The cost also depends on how much refrigerant your unit needs. If only a small amount of Freon leaked out, your cost would be on the lower side. A complete replacement of all the required refrigerant can get expensive.

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

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