HVAC design

We are building a new 2900 sq feet home in California.The contractor is proposing a HVAC design where1. 4 ton Heat pump with single air handler for main open floor… We are building a new 2900 sq feet home in California.The contractor is proposing a HVAC design where1. 4 ton Heat pump with single air handler for main open floor…Read MoreGreenBuildingAdvisor