Schar Heating & Cooling, Inc. Share: Heating/Air Conditioning Schar Heating & Cooling, Inc. Visit Website 60 Sterling Ave. Rittman, OH 44270 (330) 927-1125 (330) 927-9013 (fax) Hours: M-F 8-5 (24 hr. emergency service) About Map About Service and install HVAC including gas, electric, geothermal, and ductless systems. Water heaters What's Nearby? Distance: 5 10 15 20 25 50 mi.