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TRUSTED BY SULLIVAN, 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 Sullivan

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 JB Mechanical, LLC

JB Mechanical, LLC

4.88(
30
)
•Approved Pro

JB Mechanical, LLC

4.88(
30
)
•Approved Pro
Customers say: Quality work
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
9 years of experience

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

Avatar for Southport Home Services

Southport Home Services

5.00(
7
)
•Approved Pro

Southport Home Services

5.00(
7
)
•Approved Pro
20 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.

"Justin took care to not over sell me. Only what I needed and understood. The install team were tidy, efficient, and educated me about the safety approaches when changing the humidifier filter. That filter and the furnace filter are the same that was used on my old system. They were professional and personable."

Ann Louise T 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.

"Justin took care to not over sell me. Only what I needed and understood. The install team were tidy, efficient, and educated me about the safety approaches when changing the humidifier filter. That filter and the furnace filter are the same that was used on my old system. They were professional and personable."

Ann Louise T 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 Countryside Heating and Cooling, LLC

Countryside Heating and Cooling, LLC

5.00(
5
)
•Approved Pro

Countryside Heating and Cooling, LLC

5.00(
5
)
•Approved Pro
1 years of experience
Free onsite estimate

We are a small family owned business located in Pewaukee. Call us today for all of your heating, cooling, boiler, and hydronic heating needs. Licensed, insured, and accredited with the Better Business Bureau.

We are a small family owned business located in Pewaukee. Call us today for all of your heating, cooling, boiler, and hydronic heating needs. Licensed, insured, and accredited with the Better Business Bureau.

Avatar for Over the Moon Heating, Air & Electric

Over the Moon Heating, Air & Electric

3.78(
9
)
•Approved Pro

Over the Moon Heating, Air & Electric

3.78(
9
)
•Approved Pro
Customers say: Quality work
16 years of experience
Emergency services offered

Over the Moon is in business for one reason: our customers. Our first and foremost mission is to educate customers on the safety of their home with their electrical and HVAC systems. We specialize in repairing, installing and designing electrical and HVAC systems in your home. Owner/operator Shawn White is a master electrician, as well as an electrical/HVAC licensed contractor. What that means to our customers is that our services are backed with knowledge and experience to ensure the job is done safely and up to all state and local codes. We are fully insured and registered with the state of Wisconsin. Our team of licensed, background checked technicians service the southeastern Wisconsin communities in their orange warehouse on wheels. Our technicians are dedicated to supplying our customers with solutions met with customer service second to none. Trust us to Educate you on the Safety of your home.

"I had the Team out to perform and AC service and Furnace tune up. With such great service and comparable pricing I ended up moving forward with duct cleaning services. The guys were friendly and professional they were also nice to my doberman."

Brie K on August 2024

Over the Moon is in business for one reason: our customers. Our first and foremost mission is to educate customers on the safety of their home with their electrical and HVAC systems. We specialize in repairing, installing and designing electrical and HVAC systems in your home. Owner/operator Shawn White is a master electrician, as well as an electrical/HVAC licensed contractor. What that means to our customers is that our services are backed with knowledge and experience to ensure the job is done safely and up to all state and local codes. We are fully insured and registered with the state of Wisconsin. Our team of licensed, background checked technicians service the southeastern Wisconsin communities in their orange warehouse on wheels. Our technicians are dedicated to supplying our customers with solutions met with customer service second to none. Trust us to Educate you on the Safety of your home.

"I had the Team out to perform and AC service and Furnace tune up. With such great service and comparable pricing I ended up moving forward with duct cleaning services. The guys were friendly and professional they were also nice to my doberman."

Brie K on August 2024

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 Auto Transport - United Freight Of America

Auto Transport - United Freight Of America

4.84(
920
)

Auto Transport - United Freight Of America

4.84(
920
)
Customers say: Quality work
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers

United Freight of America is your all inclusive transport solution. CONTACT US FOR A QUOTE. please include pick up and Drop off locations and vehicle information

"Excellent, no problems. My car was new the first year I used the service and there has never been any damage during the transports. The men picking up and delivering the car have always been pleasant and cooperative. Both Ely and Guy at United Transport has been highly responsive to my needs. I would highly recommend this company."

CLAUDIA H on October 2021

United Freight of America is your all inclusive transport solution. CONTACT US FOR A QUOTE. please include pick up and Drop off locations and vehicle information

"Excellent, no problems. My car was new the first year I used the service and there has never been any damage during the transports. The men picking up and delivering the car have always been pleasant and cooperative. Both Ely and Guy at United Transport has been highly responsive to my needs. I would highly recommend this company."

CLAUDIA H on October 2021

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Heating and Air Conditioning questions, answered by experts

To reduce AC startup power for a whole-house generator, install a soft start kit or hard start capacitor, which lowers the initial surge by gradually ramping up the compressor. Using a smart load manager can also help by staggering startup loads, preventing a system overload and future costly repairs.

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.

If you’re planning an AC replacement, choosing an AC with a higher SEER rating may save you money in the long run. Tax credits could cover as much as 30% of the job, and you’ll notice smaller utility bills (particularly if you live in a hot climate where you need to constantly run the AC). Generally, you can expect to pay between $350 and $1,500 for each SEER rating increase. Weigh the cost against your typical utility bill to figure out what’s worth it to you.

Your air conditioner can temporarily run with a dirty filter, but it won’t work as efficiently. It will need to work harder to blow cool air throughout the room or house, and this can eventually cause the air conditioner to overheat or die prematurely. It’s much more cost-effective to clean or replace filters than to pay higher utility bills each month and replace the entire AC unit more often.

An HVAC unit, like a furnace, air conditioner, or heat pump, produces warm or hot air. The air ducts serve as the passages to help heat or cool air from the HVAC unit flow through the home. Air ducts are just one part of the overall HVAC system.

The Sullivan, 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.

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