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“Service That Exceeds Your Expectations”
HVAC • Electrical • Air Quality
Featured Promo*
$99 Maintenance
“Service That Exceeds Your Expectations”
Winter Maintenance Savings
$99 Furnace System Tune-Up
For new residential customers only, during normal business hours. one coupon per household. Please call us for details.
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HVAC Services

We offer expert HVAC services to ensure a comfortable and efficient environment for our customers.

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Electrical

We provide top-notch electrical services to keep your systems running safely and efficiently.

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Indoor Air

We specialize in indoor air quality services, ensuring a healthier and more comfortable environment for you.

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Commercial

We deliver comprehensive commercial services, tailored to meet the unique needs of your business.

Experienced Technicians On All Makes & Models

Dedicated To Our Craft

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With dedication, honest work ethic, superior workmanship, and an unwavering standard of excellence, we achieve your goals for comfort, cost, and convenience. Pat’s Heating & Air Conditioning focuses on your individual needs rather than the final dollar. You are never just a number to us, every job is an opportunity to exceed expectations and improve everyday life. Our team handles new installation, retrofit, seasonal service, emergency repair, and indoor air quality accessories. Allow us to inform you of the most beneficial plans on the market. We give you expert opinions on whether the best course is repair or replacement. If you need to replace it, we only find highly efficient options that quickly pay back their asking price.

Speak To An Expert Today

Why Choose Pat’s?
  • Over 35 Years Of Experience
  • We Work On All Makes & Models
  • 300+ Positive Reviews On Google
  • Wide Service Area Around Wisconsin

Our Story

Air Conditioning focused on people

Get Support and Service Your HVAC System

It is always inconvenient to have HVAC issues arise. At Pat’s Heating & Air Conditioning we are available for emergencies 24/7! If your heating and cooling breaks down on a holiday, in the middle of the night, or on a weekend, there is no need to suffer. We have got you covered. Give us a call at 262-208-5829 to experience immediate, expert, and affordable service across Summit, Oconomowoc, Delafield, Hartland, Waukesha, Pewaukee, Brookfield, Dousman, Sussex, Okauchee Lake, Stone Bank, Ixonia, and Genesee, WI.

Our Maintenance Plans

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Complete Customer Care Maintenance Plans
  • EXTENDS EQUIPMENT LIFE
  • REDUCED ENERGY COSTS
  • DISCOUNT ON REPAIRS
  • PEACE OF MIND

Learn More About Preventative Maintenance

Don't Just Take Our Word For It
Words From Around Town
We had an excellent experience with Pat’s Heating and Air Conditioning. They are extremely professional and gave us wonderful customer service from the moment that we called them. They were...
Judy C
Outstanding service with excellent communication. Salesman was professional and listened to our concerns and answered our questions thoroughly. We received both a phone call and emails detailing our appointment for...
Thomas D
After initially doing some comparison shopping, I recently made the large investment of having Pat’s install a Kohler, whole home, back-up generator. From the initial in home evaluation by Robert...
Eric M
We had our furnace replaced from Pat’s and they were fantastic. Very professional and today’s service techs were extremely helpful during the install with explaining the steps. Oh…loved the chocolates!...
Margaret O
From the beginning, everything was great. Mike Will gave us 3 estimates to choose from. Erin Halfen answered all of our questions and guided us through the financing. Alex and...
Jane K
Home services focused on people

Call on the Experts at Pat’s Heating & Air Conditioning

Pat’s Heating & Air Conditioning repairs and maintains all models and makes of HVAC equipment. We only recommend products with a proven track record of energy efficiency, comfort, and humidity control. We have been serving the Summit, Oconomowoc, Delafield, Hartland, Waukesha, Pewaukee, Brookfield, Dousman, Sussex, Okauchee Lake, Stone Bank, Ixonia, and Genesee, WI area since 1989. We complete every stage of the job, leaving no detail forgotten or neglected. At Pat’s Heating & Air Conditioning we believe in “Service That Exceeds Your Expectations.”

Deals & Offers

Heating Repair, Electrician, Furnace Service, Heating Service & Heater Installation Oconomowoc, WI, Waukesha, WI, Summit, WI, Hartland, WI, Delafield, WI & Pewaukee, WI

Electrical Installation Oconomowoc, WI | Furnace Service Waukesha, WI | HVAC Company Summit, WI

Air Duct RepairDuct ServicesFurnace CompanyHVAC ContractorAir Duct Installation ∴ Oconomowoc, WI ∴ Delafield, WI ∴ Pewaukee, WI

There When You Need Us
24/7 Emergency Service
Call 262-208-5829 Now

HVAC Contractor

HVAC Company

Furnace Company

Electrical Installation

Electrical Repair

Duct Repair

Air Duct Repair

Duct Services

Air Duct Installation

Ixonia, WI

Ottawa, WI

Genessee, WI

Okauchee, WI

Sussex, WI

Stone Bank, WI

Dousman, WI