NSF International recently published the first in a series of American National Standards for geothermal piping systems — NSF/ANSI 358-1: Polyethylene Pipe and Fittings for Water-Based Ground-Source “Geothermal” Heat Pump Systems.
Among heat pump water heaters, the Stiebel Eltron Accelera 300 has the largest capacity (80 gal.), highest energy factor (2.51), lowest power input (2.2 kW) and lowest power consumption
tekmar Control Systems introduces the tekmarNet Thermostat 557, a communicating touchscreen thermostat designed to operate either a hydronic radiant floor with a two-stage heat pump for heating/cooling and a backup heating system, or two stages of heating and two stages of cooling.
Compact strength Jaga Low-H2O products are designed to work perfectly with condensing boilers, heat pumps, solar energy and other low temperature systems.
