Residential Water Supply Design Wizard
A seamless workflow to size your residential water system accurately.
Step 1: Fixture Count (WSFU)
What This Calculator Does
This all-in-one Water Supply Design Wizard takes the guesswork out of planning your home’s plumbing system. It guides you through a simple 4-step process to ensure your pipes are sized correctly for great water pressure and a quiet, reliable system.
Here’s how it works:
- Count Your Fixtures: You start by telling the wizard about your home. Simply count up all your faucets, toilets, showers, and other appliances that use water.
- Calculate Your Peak Demand: Based on your fixtures, the calculator determines your home’s “peak water demand.” This is the highest amount of water you’ll likely need at any one time, measured in Gallons Per Minute (GPM).
- Get a Pipe Size Recommendation: The wizard then suggests the correct size for your main water supply pipe. Using the right pipe size is the most important step for ensuring strong, consistent water pressure throughout your house.
- Receive a Final Safety Check and Advice: In the final step, the calculator runs a performance analysis on your design. It checks that water will flow smoothly and quietly without losing too much pressure before it reaches your faucet. It then gives you simple, concrete advice on your design and warns you of any potential issues.
