Less guessing. More context.

Run your
own numbers.

Run your numbers

The annual shower audit

Estimate water, heating, and time. This is a cost comparison, not a health recommendation. Water rate includes sewer; heating efficiency is a fraction (0.90 = 90%).

Minutes per showerShowers per weekShowerhead flow (gallons/minute)Water + sewer ($/1,000 gallons)Mixed-water temperature rise (°F)Energy cost ($/kWh equivalent)Water-heating efficiencyMinutes to trim per shower

Illustrative defaults, not local quotes. Change the assumptions to match your situation.

Run yourown numbers.

The annual shower audit

Run your
own numbers.