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Verified Reviews for Air Conditioning pros in Jefferson, WI

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

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

Last update on August 12, 2026

Find Air conditioning pros in Jefferson

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 Jefferson, 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%
6 neighbors recently requested a quote
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Avatar for Cardinal Heating & Air Conditioning
Cardinal Heating & Air Conditioning
4.8(
164
)
Central A/C - InstallCentral A/C - Service or RepairAir Ducts & Vents - Clean+1 more

Serving Jefferson, 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

182 neighbors recently requested a quote
Recommended by91%of homeowners
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Avatar for JB Mechanical, LLC
JB Mechanical, LLC
4.9(
30
)
Air Ducts & Vents - CleanCentral A/C - Service or RepairCentral A/C - Install+4 more

Serving Jefferson, WI and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

"very good at what they do will call these guys for any furnace or ac problem"
Response time2 days
17 neighbors recently requested a quote
Recommended by93%of homeowners
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Avatar for Capital Heating & Cooling
Capital Heating & Cooling
4.2(
201
)
Air Ducts & Vents - Clean

Serving Jefferson, WI and surrounding areas

Approved

In business since 2001

Free estimates

Emergency services offered

"They were the only AC company to measure for the correct size air conditioning unit which I would tend to believe the size was correct. My only issue was the price. Now he did say I would be receiving a lesser quality piece of equipment looking at just the price. But the unit I was getting from a competitor was twice the size. Some people say size doesn't matter but I tend to disagree. 14 seer is 14 seer and the fact that it was a 2.5 to me just means it will cool that much faster."
Dirty furnace fliter
AC Repair in Brookfield
AC Replacement
Geothermal Heating System Installed
Capital HVAC Geothermal installer

+34

Response time10 mins
156 neighbors recently requested a quote
Recommended by85%of homeowners
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Avatar for Southport Home Services
Southport Home Services
5.0(
11
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace

Serving Jefferson, WI and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"Installers arrived on time and were professional in their manner and explanations of our new Carrier Furnace & AC. I highly recommend this company."
Boiler
Upstairs Furnace
Lineset/Electrical
Basement Furnace
Air Conditioner

+11

20 neighbors recently requested a quote
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Avatar for Countryside Heating and Cooling, LLC
Countryside Heating and Cooling, LLC
5.0(
7
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+2 more

Serving Jefferson, WI and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

"Shane was able to schedule a prompt appointment. He arrived on time and performed a thorough diagnostic on the furnace. He identified an issue I was unaware of and corrected the problem with the air conditioner using parts that were still under warranty. I will gladly use his services again."
Heating the Dream Barn
Heating the Dream Barn
Heating the Dream Barn
2024 Nextdoor Fave Award
2024 Nextdoor Fave Award

+2

Response time1 day
4 neighbors recently requested a quote
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Avatar for Master Services, Inc.
Master Services, Inc.
4.3(
317
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace

Serving Jefferson, WI and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1990

Free estimates

Emergency services offered

"It was a very pleasant experience. All aspects of the project was explained in detail & Jack S was very easy to work with & was very professional. This project was to install 2 mini split air conditioner units & the job done very well & was completed on schedule."
Master Services Team
Response time8 hrs
Response rate93%
13 neighbors recently requested a quote
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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 Jefferson, 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

8 neighbors recently requested a quote
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Avatar for Ls industrial repair
Ls industrial repair
5.0(
2
)
Window A/C Unit - Service or Relocate

Serving Jefferson, WI and surrounding areas

Approved

Free estimates

Small jobs welcome

Credit card accepted

At LSI repair we offer only the best and fair prices. We also specialize in heat treating furnaces but we cover a large array of services from residential to commercial from small to big.

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Avatar for Orissa Somlai
Orissa Somlai
New to Angi
Air Ducts & Vents - Clean

Serving Jefferson, WI and surrounding areas

Approved

Free estimates

Emergency services offered

Small jobs welcome

There’s nothing that relaxes me more than a clean and organized house. I also specialize in interior decorating and can help with your pets and houseplants as well.

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Air Conditioning questions, answered by experts

Air conditioners can stop working in the middle of the night for many reasons. Your local power grid might shut down late at night. Power surges can also trip your breakers if too much power is being used in the area at the time. If your AC is connected to a digital thermostat, it gets naturally cooler at night, so the outdoor temperature might dip below the automated setting to turn the cooling system off.

There are many signs of a bad AC fan motor, including if the fan blades don’t spin when the AC kicks on or if they keep spinning when the AC is off. The AC fan cools down the condenser coil, so a faulty motor can also cause the system to overheat. Unusual noises in the exterior AC unit, including grinding or rattling sounds, may also be a sign that the AC fan motor is worn out.

Your central A/C unit should be professionally serviced and inspected at least once a year to ensure it operates properly and efficiently. This is best done before the peak cooling season. A full-service inspection by a qualified pro will typically include checking safety components for issues like carbon monoxide leaks, verifying cooling components and coolant levels, and inspecting electrical parts like fuses and wiring. Regular servicing enhances efficiency, mitigates potential problems, and maintains optimal performance. Because AC systems contain hazardous refrigerant, professional handling is essential.

A new HVAC system combines components to control indoor temperature and air quality. Features include a furnace or heat pump and an air conditioner or evaporator coil, depending on the climate requirements. It also involves a network of ductwork for air distribution, a thermostat for temperature regulation, and electrical connections. Air purifiers or humidifiers can be integrated to improve indoor air quality.

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 Jefferson, WI homeowners’ guide to air conditioning services

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

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