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Top-Rated Air conditioning pros in Deforest - Updated Nov 2026

Avatar for Clark Heating & Cooling
Clark Heating & Cooling
4.8(
453
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+2 more

Serving Deforest, WI and surrounding areas

Approved

In business since 1980

Free estimates

Emergency services offered

"Clark Heating and Cooling was able to come to my house the same day that I called for a much lower service fee ($74) than other companies that I called. The Clark technician immediately knew what was wrong with my AC when he heard the unit and had the part replaced in under 20 minutes."
Ductwork going around framing in new home build
New Home Ductwork
PRODUCTS AND SERVICES
Additional Photos
Additional Photos

+4

Response time1 day
Response rate100%
3 neighbors recently requested a quote
Avatar for KETTLE MORAINE HEATING & AIR CONDITIONING LLC
KETTLE MORAINE HEATING & AIR CONDITIONING LLC
4.8(
228
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+3 more

Serving Deforest, WI and surrounding areas

Approved

In business since 1987

Free estimates

Emergency services offered

"Wonderful experience having Kettle Moraine H&AC service our central air conditioner. Matt arrived on time, explained service needed so we could easily understand what needed to be done, and was an absolute joy to have as our technician. Highly recommended and will be a long time customer of KM H&AC!"
Radiant In floor Heating
Furnace Replacement with Humidifier
Additional Photos
Additional Photos
Additional Photos

+8

Response time2 days
Response rate100%
2 neighbors recently requested a quote
Avatar for Cardinal Heating & Air Conditioning
Cardinal Heating & Air Conditioning
4.8(
166
)
Air Ducts & Vents - CleanCentral A/C - InstallCentral A/C - Service or Repair+1 more

Serving Deforest, WI and surrounding areas

Approved

In business since 1985

Free estimates

Emergency services offered

"This was my first time using Cardinal Heating & Air Conditioning, and it was a fantastic experience. I received a phone call asking me if I wanted to schedule my annual air conditioning check, and when I said yes, the scheduler informed me that she could have a technician come out that day. The technician arrived within a couple of hours and did a thorough check. Everything checked out, and I am ready for the hot summer months."
Cardinal Heating & Air
Cardinal Heating & Air
Cardinal Heating & Air
Cardinal Heating & Air
Cardinal Heating & Air

+15

154 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for RUAH HEATING AND COOLING LLC
RUAH HEATING AND COOLING LLC
5.0(
7
)
Central A/C - InstallCentral A/C - Service or RepairCentral A/C - Install - For Business+1 more

Serving Deforest, WI and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Free estimates

Emergency services offered

"We called Eli when our old humidifier started leaking. He came out that day to take a look and recommended a new unit to replace it since it was 22 years old. He returned a few days later and installed the Aprilaire unit and it works like a dream. I would recommend Eli for all of your heating and air repairs."
Response time1 day
Response rate94%
30 neighbors recently requested a quote
Avatar for Hooper Corporation
Hooper Corporation
5.0(
4
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+2 more

Serving Deforest, WI and surrounding areas

Approved

Super Service Award Winner

In business since 2017

Free estimates

Emergency services offered

"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."
Back of furnace
Furnace
Humidifier
Furnace front #2
Response time1 day
6 neighbors recently requested a quote
Avatar for Aire Serv of Madison
Aire Serv of Madison
3.0(
2
)
Air Ducts & Vents - CleanCentral A/C - InstallCentral A/C - Install - For Business+3 more

Serving Deforest, WI and surrounding areas

Approved

In business since 2007

Free estimates

Emergency services offered

Aire Serv is a full-service HVAC company dedicated to providing exceptional heating, ventilation, and air conditioning solutions for both residential and commercial clients. We specialize in a wide range of services, including regular maintenance, expert repairs, and same-day service for all types of HVAC systems. Whether you need a quick repair, a complete HVAC replacement, or are embarking on a new construction project, our team of highly trained professionals is here to ensure your systems run smoothly and efficiently.\n\nOur services also include comprehensive duct cleaning, dryer vent cleaning, and ductwork modifications to enhance air quality, system performance, and energy efficiency. We understand the importance of a comfortable indoor environment, and we are committed to delivering prompt, reliable, and affordable solutions tailored to meet your specific needs.\n\nWe pride ourselves on customer satisfaction, ensuring that every job is completed to the highest standards.

Furnace Instal
Duct & Piping
AC Install
Boiler Install
HVAC

+17

Response time12 hrs
Avatar for Everlight HVAC LLC
Everlight HVAC LLC
New to Angi
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace

Serving Deforest, WI and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

Fast, reliable heating and cooling service from a trusted HVAC team.\n\nWhen your AC stops cooling or your furnace won’t start, comfort disappears fast. Don’t let a minor issue turn into a major headache. With extreme seasons, reliable heating and cooling isn’t optional—it’s essential.\n\n24/7 emergency HVAC repair is available.

Everlight HVAC
Everlight HVAC
Everlight HVAC
Everlight HVAC
Everlight HVAC

+3

74 neighbors recently requested a quote
Avatar for Leidy cleaning
Leidy cleaning
5.0(
2
)
Air Ducts & Vents - Clean

Serving Deforest, WI and surrounding areas

Approved

Emergency services offered

Warranties offered

Small jobs welcome

“Hello, my name is Leidy, and I offer professional cleaning services. I work with great responsibility, attention to detail, and use safe products. I provide general cleaning, deep cleaning, and regular maintenance. I’m currently starting to work with clients in this area, and I would love the opportunity to help keep your space clean and organized.”

Cleaning house move out
Cleaning house move out
Cleaning house move out
Cleaning house move out
Cleaning house move out

+11

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Air Conditioning FAQs, answered by experts

Some of the signs of HVAC issues include rising energy bills, rooms not cooling or heating properly, loud noises when in operation, and signs of condensation. To illustrate, if you’re wondering how to stop condensation on air vents, you’ll need to have your HVAC inspected. 

Yes, running your air conditioning unit too cold can cause condensation in the air ducts and built up moisture on the air filter, resulting in a breeding ground for mold and mildew. Mold and mildew growth can irritate those with respiratory issues, so it’s best to keep your AC running at a normal temperature.

It depends on the type of AC unit and the extent of the mold growth. For example, if you have a small amount of mold in your central air conditioner, it’s worth cleaning it to protect your HVAC system and your health. In situations like these, you can often remove the mold yourself in a couple of hours. On the other hand, if you have a portable AC unit with a severe mold problem, it makes more sense to buy a new one. On average, replacing a portable AC unit costs $100 to $500.

HVAC pros recommend that you replace your AC filter every one to three months to maintain optimal indoor air quality and ensure your HVAC system operates efficiently. However, factors such as filter type, household size, and environmental conditions may influence the frequency of replacement. Regular filter changes help prevent debris buildup, maintain airflow, and prolong the life span of your air conditioning unit.

Some AC filters, known as reusable filters, can be cleaned and reinserted. Most AC filters, however, are disposable and cannot be cleaned. 

The Deforest, WI homeowners’ guide to air conditioning services

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