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Building Science
How Often Should You Change the Filter?

Every 30 days, when it looks dirty, or according to some other criteria?
Musings of an Energy Nerd
Solar Hot Water System Maintenance Costs

When you have to shell out a few hundred dollars every time your solar thermal system needs repairs, the maintenance costs will eat into your energy savings
Musings of an Energy Nerd
Broken Ventilation Equipment Goes Unnoticed for Years

When an ERV falls in the forest, is there anyone around to notice it’s broken?
Musings of an Energy Nerd
Simplicity versus Complexity

Complicated equipment has a downside

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How Often Should You Change the Filter?