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TRUSTED BY SUN PRAIRIE, WI HOMEOWNERS

  • Average homeowner rating star icon4.8
    Average homeowner rating
  • Verified reviews icon940
    Verified heating and air conditioning services reviews

Top-Rated Heating and air conditioning pros in Sun Prairie - Updated Nov 2026

Avatar for KETTLE MORAINE HEATING & AIR CONDITIONING LLC
KETTLE MORAINE HEATING & AIR CONDITIONING LLC
4.8(
229
)
Central A/C - InstallBoiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For Business+47 more

Serving Sun Prairie, WI and surrounding areas

Approved

In business since 1987

Free estimates

Emergency services offered

"I've been using Kettle Moraine Heating for my annual furnace and AC tune-ups for a while now, and I couldn't be happier with the service. Khamya Little was professional, thorough, and took the time to make sure everything was running perfectly. It's always a relief knowing my heating and cooling systems are in great hands. The team at Kettle Moraine consistently delivers top-notch service, they're prompt, knowledgeable, and genuinely care about doing the job right. Highly recommend them to any homeowner looking for reliable HVAC maintenance!"
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+10 more

Serving Sun Prairie, WI and surrounding areas

Approved

In business since 1985

Free estimates

Emergency services offered

"I purchased a new HVAC system from Cardinal. Everything about the job went as planned, in the amount of time we were promised. The installers were professional and cleaned up the work space very well when they were finished. I would use Cardinal again without hesitation."
Cardinal Heating & Air
Cardinal Heating & Air
Cardinal Heating & Air
Cardinal Heating & Air
Cardinal Heating & Air

+15

145 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 - InstallGas Furnace / Forced Air Heating System - InstallGas Furnace / Forced Air Heating System - Repair+7 more

Serving Sun Prairie, WI and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Free estimates

Emergency services offered

Faith-based, family owned residential HVAC Contractor. Specializing in residential sales and service of forced air, ductless and hydronic systems. Dedicated to serving the community through honesty and affordable pricing. Come and see. Call ir email us today, we would love to hear from you. 715-396-1381 or [email protected]

Response time1 day
Response rate94%
32 neighbors recently requested a quote
Avatar for Southport Plumbing, Heating & Cooling
Southport Plumbing, Heating & Cooling
5.0(
11
)
Gas Furnace / Forced Air Heating System - InstallCentral A/C - InstallGas Furnace / Forced Air Heating System - Repair+10 more

Serving Sun Prairie, WI and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

At Southport Plumbing, Heating & Cooling 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 #1 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.

Boiler
Upstairs Furnace
Lineset/Electrical
Basement Furnace
Air Conditioner

+11

16 neighbors recently requested a quote
Affordable Quality Heating & Air Conditioning, LLC
5.0(
6
)
Gas Furnace / Forced Air Heating System - InstallCentral A/C - Service or RepairCentral A/C - Install+17 more

Serving Sun Prairie, WI and surrounding areas

Approved

In business since 2014

Free estimates

Credit card accepted

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! \nBook with us online or feel free to give us a call today! \n

Response time2 days
9 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Hooper Corporation
Hooper Corporation
5.0(
4
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallCentral A/C - Service or Repair+11 more

Serving Sun Prairie, WI and surrounding areas

Approved

Super Service Award Winner

In business since 2017

Free estimates

Emergency services offered

When your pipes freeze or furnace quits, our work begins. Hooper’s service technicians arrive equipped with fully stocked service vans and are ready to roll at a moment’s notice. We’ve been caring for customers in the Madison area since 1913 and offer 24-hour residential and commercial service. You can rely on Hooper for all your plumbing, heating and cooling, and fire protection needs. When you need a trusted service partner, Hooper is here.

Back of furnace
Furnace
Humidifier
Furnace front #2
Response time1 day
6 neighbors recently requested a quote
Avatar for JDC Contracting
JDC Contracting
4.8(
36
)
Gas Boiler or Radiator Heating System - InstallOil Boiler or Radiator Heating System - InstallOil Boiler or Radiator Heating System - Repair+1 more

Serving Sun Prairie, WI and surrounding areas

Approved

In business since 2020

Free estimates

Warranties offered

"We had a furnace replaced by Shane. He was very professional about everything, was willing to do what he could to get our heat back on and gave us a good price for the work done. I definitely recommend JDC contracting for HVAC repair and replacement."
Response time1 day
2 neighbors recently requested a quote
Recommended by88%of homeowners
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Heating and Air Conditioning FAQs, answered by experts

Yes. Your air supply should be balanced. The return and supply ducts need to maintain that balance, and this only occurs because an equal amount of air should be entering and leaving your HVAC system. Changes in pressure, extreme weather, and blocking vents with furniture or your stuff can make the air supply unbalanced and cause your home to get too cold or hot.

No, it’s not normal for AC vents to drip condensation. A sweating AC vent is a sign of something wrong and can lead to issues like air duct rust or mold growth. Your HVAC unit might not be working efficiently because of a dirty filter or clogged ducts. Alternatively, your ductwork might not have adequate insulation, which allows the cool air in the ducts to meet the humid air outside, causing condensation. 

The length of an AC cycle depends on the settings in your thermostat and the unit you have. Central AC doesn't constantly run at full blast the way that a window unit does. A cooling cycle in most homes is 15 to 20 minutes. Then, the unit stays off for seven to 10 minutes to circulate the cold air in the house before the cycle repeats. It should repeat two or three times per hour. A short cycle lasts less than 10 minutes and then turns off.

There are a few ways to determine if a vent is open or closed. You can inspect the vent and examine the position of the fins. If there are spaces between them, the vent is open. If the fins are flat and touching, the vent is closed. You can also stand under the vent when the system is running to see if you feel air flowing through it.

When an evaporator coil becomes faulty, it can result in various problems within your HVAC system. These problems could include reduced cooling or heating capabilities due to ice formation and obstructed airflow, along with increased energy consumption and higher bills. Additionally, a damaged coil may lead to refrigerant leaks, which are environmentally harmful and decrease overall system efficiency.

Ultimately, if not addressed right away, a bad evaporator coil can even lead to a complete failure of your HVAC system. That’s why timely repair or replacement is crucial to maintaining your family’s comfort and your HVAC’s efficiency.

The Sun Prairie, 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.