WATERLOO, Ontario, Canada — Viessmann Canada, a manufacturer of heating and renewable energy systems, has launched new heat-pump products for residential and light commercial applications. The Vitocal ...

German manufacturer Viessmann says its new heat pumps have a coefficient of performance (COP) of up to 4.57 and a seasonal coefficient of performance (SCOP) of up to 4.4. The pumps have a heating ...

Special to CONTRACTOR WARWICK, R.I Hundreds of guests from the heating industry attended the dedication of the U.S. head office and distribution center of the Viessmann heating technology company May ...

Heat pumps have annually outsold gas furnaces for several years now, and with the recent introduction of more high-efficiency, cold-climate, air-source heat pumps, that trend is likely to continue.