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TRUSTED BY DARIEN, WI HOMEOWNERS

  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon142
    Verified heating and air conditioning services reviews

Verified Reviews for Heating And Air Conditioning Service pros in Darien, WI

*The Angi rating for Heating And Air Conditioning Service companies in Darien, WI is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.

*The HomeAdvisor rating for Heating And Air Conditioning Service companies in Darien, WI is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.

Last update on January 06, 2026

Find Heating and air conditioning pros in Darien

Avatar for ThermaTek Heating and Air

ThermaTek Heating and Air

4.73(
327
)
•Approved Pro

ThermaTek Heating and Air

4.73(
327
)
•Approved Pro
Super Service Award
Customers say: Quick response
8 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!

"Very courteous and prompt. Explained everything as well as showed me the issue. Ended up having to have a new home heater. Helped to get a decent discount. Installed the new system the very next evening, fairly late 5:30-8:30 pm. The service call on the first of the new year was then returned to me. The service tech that came out, I am very impressed with. The care and service they give is absolutely outstanding. He did say he did not put my filter back in and I would need to purchase a filter in the next couple of days. He also explained the gimmick about the costly filters, which I never knew. The payments posted my accounts the very next morning. I would definitely recommend this company! I didn’t feel blindsided or taken advantage of, being a single female this is a huge plus! "

Tasha J on January 2026

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!

"Very courteous and prompt. Explained everything as well as showed me the issue. Ended up having to have a new home heater. Helped to get a decent discount. Installed the new system the very next evening, fairly late 5:30-8:30 pm. The service call on the first of the new year was then returned to me. The service tech that came out, I am very impressed with. The care and service they give is absolutely outstanding. He did say he did not put my filter back in and I would need to purchase a filter in the next couple of days. He also explained the gimmick about the costly filters, which I never knew. The payments posted my accounts the very next morning. I would definitely recommend this company! I didn’t feel blindsided or taken advantage of, being a single female this is a huge plus! "

Tasha J on January 2026

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
39 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 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
7 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 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
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!

"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 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
34 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
133 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

Avatar for AppliancePartsPros.com

AppliancePartsPros.com

4.73(
287
)

AppliancePartsPros.com

4.73(
287
)
Customers say: Quick response
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers

Since 1999, we've helped millions of do-it-yourselfers save money and fix their broken appliances quickly by providing quality appliance parts and free repair advice. We are only an online appliance parts retailer that offers a 365 day warranty and fast shipping. We also offer technical advice and diagnosis totally free 6 days a week. If you are interested in repairing your own appliance, please call us at 1-877-477-7278 or click live chat on our web site. We will help diagnose the problem and provide you with all the necessary information for the repair free of charge. It's better with the Pros!™ Avoid costly service calls - visit us at http://www.appliancepartspros.com

"Beware of shipping issues with this company. Ordered an ice maker installation kit on 10/10/25. Shipping was due no later than 10/20 according to company and FedEx tracking. FedEx tracking showed the package at their facility for 8 days without moving beginning on 10/15. Called FedEx 3 times. Each time they said they cannot find package and I have to contact shipper. Shipper has to make a claim, they will not mark it as lost. Called Appliance Parts Pros twice. Each time they say FedEx has to mark package lost before they will do anything. They also state they have to wait 14 days from them before doing anything because of their contract with FedEx. I don't care about their contract, I want what was ordered and paid for. Just going in circles with them and FedEX. If they shipped after 14 days it would be 22 days from that point, 32 days from the date of order if they shipped it that day. There was a deadline for installing this part before tenants arrive. They did not care, would not m"

Ron R on October 2025

Since 1999, we've helped millions of do-it-yourselfers save money and fix their broken appliances quickly by providing quality appliance parts and free repair advice. We are only an online appliance parts retailer that offers a 365 day warranty and fast shipping. We also offer technical advice and diagnosis totally free 6 days a week. If you are interested in repairing your own appliance, please call us at 1-877-477-7278 or click live chat on our web site. We will help diagnose the problem and provide you with all the necessary information for the repair free of charge. It's better with the Pros!™ Avoid costly service calls - visit us at http://www.appliancepartspros.com

"Beware of shipping issues with this company. Ordered an ice maker installation kit on 10/10/25. Shipping was due no later than 10/20 according to company and FedEx tracking. FedEx tracking showed the package at their facility for 8 days without moving beginning on 10/15. Called FedEx 3 times. Each time they said they cannot find package and I have to contact shipper. Shipper has to make a claim, they will not mark it as lost. Called Appliance Parts Pros twice. Each time they say FedEx has to mark package lost before they will do anything. They also state they have to wait 14 days from them before doing anything because of their contract with FedEx. I don't care about their contract, I want what was ordered and paid for. Just going in circles with them and FedEX. If they shipped after 14 days it would be 22 days from that point, 32 days from the date of order if they shipped it that day. There was a deadline for installing this part before tenants arrive. They did not care, would not m"

Ron R on October 2025

Avatar for BASEMENT SPECIALISTS INC

BASEMENT SPECIALISTS INC

4.95(
75
)

BASEMENT SPECIALISTS INC

4.95(
75
)
Customers say: Super punctual
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers

Basement Specialist is a company rooted in honesty and quality of work. We are a locally owned company specializing in basement waterproofing, foundation repair, and overall repair and maintenance of the supporting base of your home. At Basement Specialist, we recognize the importance of understanding construction methods and soil conditions of the Metro Area. Our quality reviews speak for themselves; Angie's List members love us!

"Dale was very thorough in his examination of my situation and gave me clear explanations of what was going on. Other firms that quoted the work insisted that the entire basement needed to be done. Dale said that we only need to fix what is leaking. Cost to do that was one third that of other bids. Crew was on time, prompt and thorough. I would definitely use this firm again."

Erich Z on December 2018

Basement Specialist is a company rooted in honesty and quality of work. We are a locally owned company specializing in basement waterproofing, foundation repair, and overall repair and maintenance of the supporting base of your home. At Basement Specialist, we recognize the importance of understanding construction methods and soil conditions of the Metro Area. Our quality reviews speak for themselves; Angie's List members love us!

"Dale was very thorough in his examination of my situation and gave me clear explanations of what was going on. Other firms that quoted the work insisted that the entire basement needed to be done. Dale said that we only need to fix what is leaking. Cost to do that was one third that of other bids. Crew was on time, prompt and thorough. I would definitely use this firm again."

Erich Z on December 2018

Avatar for Webster Bath Remodeling

Webster Bath Remodeling

4.93(
27
)

Webster Bath Remodeling

4.93(
27
)
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers

3 Employees. Uses subs for plumbing, electrical, heating & air conditioning. Charges a flat rate. No travel charges. Ask about angie's list discount. License # 827784. Additional email address: [email protected].

"Awesome work. Great communications. They did some extra work for me including a ceiling fan, bathroom fan and bathroom lighting painting the bathroom and still came in very reasonably priced. I would definitely have them back"

Dave G on June 2020

3 Employees. Uses subs for plumbing, electrical, heating & air conditioning. Charges a flat rate. No travel charges. Ask about angie's list discount. License # 827784. Additional email address: [email protected].

"Awesome work. Great communications. They did some extra work for me including a ceiling fan, bathroom fan and bathroom lighting painting the bathroom and still came in very reasonably priced. I would definitely have them back"

Dave G on June 2020

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Heating and Air Conditioning questions, answered by experts

Split systems are the most common type of HVAC system. Split systems have two main units: an indoor one and an outdoor one. These units work together to pull in air, heat or cool it, and distribute it throughout your home. Other popular types of HVAC systems include hybrid systems and packaged heating and air systems.

ACs don't run on water. They're not connected to drain pipes or any part of your plumbing system. However, they need refrigerant to run. Refrigerant is a gas or liquid that has a low boiling point and absorbs the heat in your home. ACs need this in order to be functional and cool your home. If you suspect your AC is low on refrigerant, you need to contact a licensed HVAC professional. Refrigerant is a dangerous chemical that requires specialized training and permits to work with. 

Mini-split air conditioners are less expensive to run than central air and are considerably more energy efficient. You can run the heating or cooling units in individual rooms and turn off the units in the rooms you aren’t using. This method allows you to save about 30% off your energy bill compared to a ducted system.

Most HVAC service calls include diagnostic fees, which could include checking on a specific issue you’re experiencing or running through a routine inspection checklist. If you called for a particular problem, the service call will also include an estimate to fix the issue, including materials and labor. Depending on your HVAC technician and the service you requested, you might also get a general inspection of your system components to ensure everything is working as intended.

Indications of an HVAC problem include inconsistent heating or cooling throughout your home, unpredictable temperature changes, or inadequate air flow from vents. Abnormal sounds such as grinding, banging, or hissing, and unpleasant smells like mustiness or burning are also potential warning signs. A rise in energy costs without an increase in usage may also imply decreased efficiency. An HVAC system that frequently cycles on and off or cannot maintain a stable temperature is malfunctioning.

The Darien, 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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