Experts in Furnace Repair, Service & Installation

At Schaus, we service and repair all brands and models of heating systems. Our factory trained technicians will expertly diagnose, repair and service your furnace or HVAC to restore maximum efficiency and comfort. We offer 24 hours service 7 days a week. We repair all brands and models of central AC and furnaces, including oil furnaces, gas furnaces and boilers for residential and commercial.


In order to get the most from your furnace, it needs to be professionally installed. But in order to keep your furnace in good shape for years to come, it needs to be professionally maintained. Whether you have a gas, electric or propane furnace, it could benefit from having one of our professional furnace maintenance technicians clean, inspect, and adjust it for optimal performance and energy efficiency. Our furnace maintenance in Manitowoc County & surrounding areas, can help to prevent your furnace from breaking down and improve its efficiency during the heating season.


Schaus offers precision tune-ups to keep your heating system running safely and at peak performance.

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Furnace Tune-Up Services 

  • Inspect electrical components and controls
  • Clean and check heat exchanger and burners
  • Calibrate thermostat
  • Replace batteries in programmable thermostat (once a year)
  • Oil motor, if necessary
  • Clean unit
  • Replace furnace filters
  • Inspect electrical components and controls
  • Clean and check heat exchanger and burners
  • Calibrate thermostat
  • Replace batteries in programmable thermostat (once a year)
  • Oil motor, if necessary
  • Clean unit
  • Replace furnace filters

What Is AFUE On A Furnace? 

All of today’s Furnaces and Boilers efficiency is measured by annual fuel utilization efficiency (AFUE). To be more specific, AFUE is the ratio of annual heat output of the furnace or boiler compared to the total fossil fuel energy consumed by a furnace or boiler in a year.

For example, a furnace rated at 80 AFUE means that for every dollar you spend to heat your home, 80 cents is returned in heat and 20 cents is lost. The AFUE rating does not include how much heat energy is lost through the ductwork of the heating system. Leaking ducts or ductwork running through a cold attic will increase how much is lost. To get the maximum worth out of each dollar spent on gas, a 90%+ operating furnace is the best option available. Each dollar spent in turn can bring over 96 cents back in heat to your home.

Dual Fuel Heating Systems 

Hybrid Heat

HYBRID HEAT dual fuel system combines the strengths of a gas furnace with an electric heat pump to deliver the comfort and efficiency you need in both warm and cold seasons to give you more control over your utility bills. As outdoor winter temperatures change, the system automatically switches between heat pump and furnace to utilize the most cost-effective fuel source and maintain greater efficiency. Because a HYBRID HEAT system provides the flexibility to work with multiple fuel sources, it provides additional protection from unpredictable fuel cost increases. And the system is so efficient, its heating costs are less than with any gas furnace alone.

Selecting The Right Thermostat 

With our wide range of dependable programmable thermostats, non-programmable thermostats and zoning thermostats including Carrier’s Infinty Touch Control, you have total control over temperature, humidity, air treatment and timing, including Wi-Fi remote capability. Call us today for more information.

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