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50+ Years
experience
Emergency
services
Your Trusted HVAC Partner in Horicon, WI
Since 1947, Sure Fire Heating & Air Conditioning has been Wisconsin's trusted leader in heating, ventilation, and air conditioning solutions. Founded by Emil Malesevich, our company was built on the principle of delivering superior HVAC systems and service to underserved rural communities. Over seven decades, we've grown into Dodge County's largest HVAC contractor while maintaining our commitment to quality design, engineering, and installation. Our team of over 35 skilled professionals provides comprehensive residential and commercial HVAC services, including emergency repairs, system replacements, and custom installations.

We invest in continuous technician training and maintain partnerships with top equipment manufacturers to ensure lasting comfort solutions. With facilities in Horicon, Fond du Lac, and Beaver Dam, we serve Wisconsin homeowners and businesses with prompt, reliable service backed by 75 years of industry expertise. Our approach combines precise load calculations, custom duct design, and energy-efficient technology to meet each client's unique comfort needs.
Services
Furnace Replacement Central AC Installation HVAC Repair Commercial HVAC Maintenance Plans
Details
  • Year established: 1947
Highlights and features
  • We offer 75+ years of combined HVAC expertise with ongoing technician training
  • Our team provides 24/7 emergency service for urgent heating/cooling needs
  • We implement custom duct design and energy-efficient system installations
  • Our financing options make HVAC replacements affordable and accessible
  • We maintain partnerships with leading HVAC equipment manufacturers
Services
Residential HVAC
Sure Fire Heating & Air Conditioning designs and installs customized heating and cooling systems for Wisconsin homes. Our services include furnace replacement, central AC installation, and duct system optimization. With precise load calculations and energy-efficient equipment, we ensure year-round comfort while reducing energy costs. Our NATE-certified technicians provide expert maintenance and emergency repairs.
Commercial HVAC
We deliver comprehensive commercial HVAC solutions from design to maintenance. Our services include system replacement, custom duct fabrication, and 24/7 emergency support. With LEED-certified project managers, we implement energy-efficient systems that meet ASHRAE standards while minimizing business disruptions during installation.
Furnace Replacement
Our furnace replacement service includes proper equipment sizing, AFUE-rated system selection, and precision installation. We offer high-efficiency models from trusted brands with warranties up to 10 years. Our technicians ensure proper venting, combustion air supply, and thermostat integration for optimal performance.
Central AC Installation
We install central air conditioning systems tailored to Wisconsin's climate. Services include SEER-rated unit selection, ductwork optimization, and refrigerant line installation. Our team ensures proper system sizing and integrates humidity control solutions to maintain indoor comfort during summer months.
Maintenance Plans
Our preventive maintenance plans include bi-annual system inspections, filter replacements, and performance testing. Plans cover both heating and cooling systems with priority scheduling for repairs. Regular maintenance extends equipment lifespan and maintains manufacturer warranty validity.
People
Casey Malesevich
President
Leading Sure Fire Heating & Air Conditioning since 2011, Casey brings legal expertise and strategic leadership to HVAC operations while maintaining family business values established in 1947.
Ted Malesevich
Vice President
As LEED-certified project manager since 2016, Ted oversees commercial HVAC projects with focus on sustainable design and energy-efficient building systems integration.
Greg Blohowiak
Commercial HVAC Designer
With 17 years at Sure Fire Heating & Air Conditioning, Greg specializes in commercial system design, creating customized HVAC solutions that balance comfort requirements with energy efficiency standards.
Tom Schwartz
Residential Sales
Serving as residential HVAC specialist since 1995, Tom provides personalized system recommendations based on home size, occupancy patterns, and climate considerations.
Rob Eberhardt
Service Manager
Leading the service department since 2010, Rob coordinates 24/7 emergency response and ensures timely completion of residential and commercial HVAC service requests.
Questions
What HVAC services do you offer for Wisconsin homeowners?
We provide complete residential HVAC solutions including furnace replacement, central AC installation, duct system upgrades, and preventive maintenance plans.
Do you offer emergency HVAC repair services?
Yes, our technicians are available 24/7 for urgent heating and cooling repairs across Dodge County and surrounding areas.
What commercial HVAC services are available?
We offer commercial system design/build, equipment replacement, preventive maintenance, and LEED-compliant installations for businesses in Wisconsin.
Do you provide financing options for HVAC replacements?
Yes, we offer 0% financing options to make furnace or AC replacements more affordable for residential and commercial clients.
How can I schedule HVAC service?
Contact us through our website or call (920) 485-4883 to schedule service. Emergency calls receive immediate attention 24/7.
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Reviews (3)
Mike Kerske
Jun 24, 2021 Report
We bought a new CENTRAL AIR CONDITIONING UNIT from them , they were very professional & courteous . I RECOMMEND THEM OVER AIRCARE in Beaver Dam any day. Price was reasonable to.
Deborah Netz
Jun 14, 2021 Report
Super prompt service and response time. Our technician was polite, professional, knowledgeable, explained everything and had our AC up in running in about an hour. When it’s 92 degrees you’re very thankful. I liked the online service request form as our outage happened after hours. We got a call first thing in the morning and all repairs were done by 9am.
Penny Flaskrud
Nov 19, 2019 Report
5 ☆☆☆☆☆ outstanding customer service, very friendly technician who explained everything to me and also gave other suggestions to keep my furnace running smooth. Pricing was very reasonable. highly recommend, feeling nice and warm now! Thank you!!