Superior Comfort by Design — Since 1957

Overcashier & Horst Heating and A/C, Inc. has been serving the Toledo metropolitan area since 1957 — almost 70 years of trusted heating, cooling, and indoor air quality service for homes and businesses across northwest Ohio and southeast Michigan. BBB-accredited since 1978, we've built our reputation on honest advice, certified craftsmanship, and equipment that performs year after year. Our team of expertly trained technicians brings the same dedication to every job, whether it's a furnace tune-up or a full geothermal system installation.

From high-efficiency Trane furnaces and air conditioners to geothermal systems that save up to 70% on energy costs, Overcashier & Horst delivers complete HVAC solutions for the Toledo metro area. We handle furnace and AC installation, repair, and maintenance — along with heat pumps, ductless mini-splits, indoor air quality systems, water heaters, and 24/7 emergency HVAC service. When your heating or cooling fails, or when you're ready to upgrade to a more efficient system, our team is ready to help across Sylvania, Toledo, Maumee, Perrysburg, and throughout northwest Ohio and southeast Michigan.

Why Choose Us

• Serving northwest Ohio and southeast Michigan since 1957 — almost 70 years of trusted HVAC service
• Trane Comfort Specialist and WaterFurnace geothermal authorized dealer
• Expertly trained technicians
• BBB A+ rated, accredited since 1978
• 24/7 emergency HVAC service available
• Financing available through Wells Fargo
• Licensed in both Ohio and Michigan — one of the few HVAC contractors to serve both states

Our Customers Say It Best

• “They did an outstanding job. They even sealed up some duct leaks that we had not mentioned in the earlier quote.” — Dick H.
• “The company was most willing to help on short notice and squeezed in a customer, with the tech quickly identifying and solving the problem.” — Angi reviewer