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Mark's Heating & Cooling, Inc.

"Whatever It Takes"

About Us

Mark's Heating specializes in providing Bryant Heating and Cooling Systems for Oconomowoc, the Lake Country area, and beyond. With over 40 years of experience in Southeastern Wisconsin, we are proud to be NATE Certified. Whether you need a new furnace or air conditioner, service on your current system, or preventative maintenance to enhance your home's efficiency, we have you covered. We offer complete sales, service, and installation with an extensive line of Bryant products. For more information, please visit our website: http://www.marksheat.com

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Areas Served

Waukesha County, WI | Oconomowoc, WI | Lake Country, WI

Our Professional Associations

• North American Technician Excellence
• Better Business Bureau

Our Certifications

• NATE Certified

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What We Offer

Our Specialties include:

• Residential and Commercial
• New Home Construction
• Remodels
• Boiler Installation and Repair
• Humidifiers
• In-Floor Heating
• Air Conditioning

Our Services include:

• Air Conditioner
• Furnaces and Repair
• Boilers and Installation
• We Sell Bryant Brand Products

Our Brands include:

• Bryant

Our Products include:

• Dehumidifiers
• Ventilators
• UV Lamps
• Evaporate Coils
• Humidifiers
• Light Commercial
• Heat Pumps
• Gas Furnaces
• Packaged Products
• Fan Coils
• Ductless Systems
• Air Conditioners
• Air Purifiers
• Boilers
• CO Alarms
• Controls and Thermostats
• VRF Indoor and Outdoor Units, Controls and Accessories

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Testimonials

On 2/17/2025 Josh Starkey had this to say:
I only have good things to say about this company. Good customer service, fast response time and quality repairs. Will be a repeat customer. Thanks

On 1/20/2025 Nancy D had this to say:
Mark was immediately responsive, professional and efficient. It was such a cold morning and of course also a Monday. Highly recommend for HVAC needs!! Testimonial written by Nancy D on this site.

On 2/1/2024 Gar Aschenbrener had this to say:
Prompt and takes time to explain the repair. 5 Star service.

On 1/20/2024 Tim O had this to say:
Very professional and responsive to my service call for furnace problem. Highly recommend

On 1/20/2024 Tim Otto had this to say:
Excellent service and repair. Had no heat on zero degree day. Mark arrived within 2 hours and fixed and running in short order. Testimonial written by Tim Otto on this site.

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Contact Us

Mark's Heating & Cooling, Inc.
355 W. Wisconsin Ave. Oconomowoc, WI 53066
Phone: (262) 567-6829
Mobile: (262) 719-7309
Fax: (262) 567-8220
Email: marksheat@yahoo.com

1/2 Mile West of Intersection of 67 and Wisconsin Avenue. Right Across from City Beach

Where To Find Us

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Payment Types Accepted

Visa, MasterCard, American Express, Personal Checks, Cash

Our Hours

Holiday Hours May Vary. Please Call For Details.

Monday: 7:00 AM - 7:00 PM
Tuesday: 7:00 AM - 7:00 PM
Wednesday: 7:00 AM - 7:00 PM
Thursday: 7:00 AM - 7:00 PM
Friday: 7:00 AM - 7:00 PM

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