HVAC for a swim spa underground

I’m the client, building a PHIUS Passive House in Seattle, with an architect and builder who have done Passive certified projects before. However, we are doing something they have never… I’m the client, building a PHIUS Passive House in Seattle, with an architect and builder who have done Passive certified projects before. However, we are doing something they have never…Read MoreGreenBuildingAdvisor