House & Home

NFI App

Trying to run mathematical formulas while out on the job is difficult. This handy app makes it easy. The five most commonly used formulas are at your finger tips:

Where to set a stove in a corner Installation
What size hole to cut in the roof based on the roof pitch
How tall should the venting system be t meet the 3′ 2′ 10′ rule
How far down does the chimney need to extend to meet the connector pipe clearances to a cathedral ceiling
Minimum room size required for proper combustion air supply in gas installations using the KAIR formula.