It’s nice to finally see the various mechanical systems in the house connected.
Here’s a breakdown of what we’ll be running:
• Lifebreath Model 155 Heat Recovery Ventilator (HRV)
– The “mechanical leak” for the house
• Lifebreath Turbulent Flow Precipitator TFP3000
– Filter system that works with the HRV. Removes 99.97% of particles such as pollen, fungus spores, dust, animal dander and dirt
• WaterFurnace Envision Series Geothermal All-In-One Heat Pump
– Main heating and cooling for the house
• Superstore 45 Gallon Coil Booster Tank
– Water storage tank that collects the “waste” energy from the WaterFurnace, and provides us with 100° hot water.
• Eemax EX190TC On-Demand Electric Water Heater
– The “booster” unit to heat our 100° hot water in the tank to a pleasant 120-130° for showers, dish washing etc.
So…a little detail on HRVs.
When you build a super-insulated house you can’t always rely on opening windows to bring in fresh air, especially in Vermont where outside winter temps can drop to 30 below! This is where an HRV comes in.
As a “mechanical leak” for the house, the HRV automatically exchanges the inside air for fresh outside air, but the cool part is it “recovers” the temperature of the inside air and applies it to the new air coming in. Lifebreath claims 83% effectiveness for this unit, though we’ll have to wait to see if this is true. The advantage in winter is that you don’t lose your warm inside air as you bring in cold outside air, which also means less runtime for your heating system.