Balanced mechanical ventilation is code required in all new construction in my home state of Minnesota. Indoor air quality has become a big topic with today’s pandemic. My market uses HRV’s or heat recovery ventilators almost exclusively. They work great at supplying the home with filtered fresh air and at controlling indoor humidity levels. You can read more about HRV’s here. Continue reading “Construction Design-HRV or ERV”
Building Science-Air Changes
My last posting I talked about air changes at 50 Pascals (ACH50) and air changes natural (ACHnat). This week I’m going to discuss how much fresh air a home needs in a northern climate and a couple of the codes Minnesota has in force that work well. One of these codes, the requirement for balanced ventilation, helps add durability to our structures. Continue reading “Building Science-Air Changes”
Construction Design-Humidity Control in a Garage
I watched an electrician install two ceiling fans in an attached garage recently while I was working as a subcontractor on a new home being built. I quizzed him on their use and he said moisture control. This got me thinking about controlling humidity in a heated garage in a northern climate, this week’s topic. Continue reading “Construction Design-Humidity Control in a Garage”
Mechanicals-Heat Recovery Ventilators
I’ve had several discussions on this blog about the importance of a tight home, “built it tight and ventilate it right”. Continue reading “Mechanicals-Heat Recovery Ventilators”