Posted on April 10, 2014 by Alex Wilson
In this weekly blog, I’ve focused a lot of attention on the energy-saving measures at our new home — from the innovative insulation materials we used to the air-source heat pumpHeat pump that relies on outside air as the heat source and heat sink; not as effective in cold climates as ground-source heat pumps. heating system and our top-efficiency heat-recovery ventilator(HRV). Balanced ventilation system in which most of the heat from outgoing exhaust air is transferred to incoming fresh air via an air-to-air heat exchanger; a similar device, an energy-recovery ventilator, also transfers water vapor. HRVs recover 50% to 80% of the heat in exhausted air. In hot climates, the function is reversed so that the cooler inside air reduces the temperature of the incoming hot air. .
What I haven’t said much about are the measures we’ve taken to reduce water use and why these measures save energy as well.