EcoRenovator - View Single Post

JRMichler · 04-26-12, 08:33 PM

Our house was built in 2002 as an energy efficient house. The builder recently bought a blower door and tested it on our house. It came to 1.0 ACH50. That correlates roughly to 0.05 ACHnat (actual ACH under normal weather conditions).

We built the house with an HRV. I set the unit on its lowest speed, about 35 CFM. That's a little less than normally recommended for a 1320 SF house, but it has worked well for us. The air gets noticeably stuffy if we turn it off.

We had six people and a small dog in the house for several months, and 35 CFM was sufficient. The return air comes from the bathrooms, the supply air goes into the cold air return.

04-26-12, 08:33 PM	#39
JRMichler Apprentice EcoRenovator Join Date: Apr 2012 Location: Phillips, WI Posts: 109 Thanks: 10 Thanked 30 Times in 25 Posts	Our house was built in 2002 as an energy efficient house. The builder recently bought a blower door and tested it on our house. It came to 1.0 ACH50. That correlates roughly to 0.05 ACHnat (actual ACH under normal weather conditions). We built the house with an HRV. I set the unit on its lowest speed, about 35 CFM. That's a little less than normally recommended for a 1320 SF house, but it has worked well for us. The air gets noticeably stuffy if we turn it off. We had six people and a small dog in the house for several months, and 35 CFM was sufficient. The return air comes from the bathrooms, the supply air goes into the cold air return.