Loaded from CF1R Scanner — . Add the measured distances to finish.
Compactness gaugeAwaiting input
Enter measurements →
0 ft▲ qualification limit max —
Weighted dist.—
Qualification—
Margin—
Modeled CF · designer—
Measured CF · indicative—
—
2025 ECC—Expanded credit
Designer · Energy consultant
Plan the system & model the credit
Set the building configuration and the three plan-view distances. The gauge shows whether the layout qualifies, and below you'll get the exact CF1R wording to list.
Building configuration
Building type
Stories
Distribution system
Recirculating option is single-family only (RA4.4.6).
ft²
Dwelling-unit CFA.
Dedicated to this unit.
Plan-view distances
Measure straight-line, center of water heater to center of the furthest fixture — not pipe-run length, and ignore vertical rise. Fixtures on other floors are projected onto the water-heater floor. (RA4.4.6)
ft
Furthest fixture → closest WH.
ft
Furthest fixture → closest WH.
ft
Furthest other fixture (laundry, guest bath). Avg across WHs if n>1.
Credit tier
List on the CF1R
Feature / verification label
—
Calculation detail
—
The Qualification Distance is computed by CBECC-Res from CFA, stories and water-heater count — this readout mirrors the published RA4.4.6 method for planning. Treat the official compliance software result as authoritative.