Steffes HPB22 Owners Manual - Manual (Page 4)

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1. GENERAL INFORMATION
Steffes ETS Heat Pump Boosters (HPB) operate on the principle of utilizing off-peak electricity, available at
preferential rates, to heat the structures they serve.
When off-peak rates are available (up to several hours each day), the HPB converts electricity to heat which is then
stored in its ceramic brick core. This stored heat becomes available for space heating needs as determined by a room
thermostat strategically located in the living space.
As its name implies, the HPB has been developed to supplement the heat output of a dwelling's central heat pump
system. Although noted for efficient performance, air-to-air heat systems may suffer diminished capacity during colder
times of the year when heating requirements are most critical. Resistance strip heat has been used to bolster heating
output during those periods but is a costly solution from an operational cost standpoint. Heat provided by the HPB is
much less costly and is provided at temperatures leading to significantly improved comfort.
Flexibility is also an inherent feature of the HPB. Configured much the same as a small storage furnace and
equipped with an adaptable control package, the HPB can be utilized as a central furnace for small homes and condo-
miniums or serve to supplement existing heating systems. Proposed applications must always be tested against dwelling
heat loss versus unit heating capacity and space available for installation.