Blog
Projects, comparisons and buying guides
The short guides answer one question each. These articles go wider: a whole project from measuring to ordering, or two ways of doing the same job side by side. The numbers still come from the tools.
- How to size a furnace by state and square footage (the climate-zone rule, step by step)
Zone from your state, square footage times the zone's BTU per sq ft, an insulation adjustment, the furnace class: 1,800 sq ft in Michigan worked through.
· 6 min read