HotWaterWater heater intelligence
Good hot water.
Better logic.
Know what your home needs before you choose a water heater. Model your demand, compare the cold-water effect, and give your plumber a clearer starting point.
NO SIGN-UP. YOUR INPUTS STAY IN YOUR BROWSER.
The hot water planner
Your routine.
Translated into demand.
Start with your ZIP and a few household questions. We’ll explain which water-heater options to compare. The detailed planner is here whenever you need it.
Find your water heater fit.
No technical measurements needed. Get a starting point for your home, then explore the details if you want to.
Before you buy, have a plumber confirm how much hot water the heater can deliver in your busiest hour, along with your space, fuel and installation needs.
What this starting point assumes
ZIP locations use GeoNames. The cold-season scenario uses nearby NOAA climate normals and a water-mains model. ZIP code does not identify your heater or measure your water supply. See the method and sources.
Show detailed calculationsAdjust your water temperature, showers, baths and busy-hour routine
What runs at the same time? Enter fixture flow and how many run together. We account for the mix of hot and cold water.
Planning heater output: 120°F. Fixture temperatures and all model assumptions are explained in our methodology. These inputs do not change equipment settings.
The cold-water effect
Same shower.
Different starting line.
Colder incoming water needs more heat to reach the same temperature at your fixture. Change your planner inputs and this comparison follows your household.
Understand temperature riseFOUR INLET SCENARIOS · SAME FIXTURES, FLOW & DELIVERY TEMPERATURES.
SCENARIOS ARE NOT LOCAL UTILITY MEASUREMENTS.
From questions to a clear brief
Make the first visit
more productive.
Bring your usage profile, existing equipment details and main concern into one brief. Your plumber can verify the details and build a recommendation around your home.
Field notes
Better questions.
Better decisions.
What size water heater
does your home need?
Why tank gallons, first-hour delivery and simultaneous flow tell different stories.
THE SYSTEM COMPARISONTank, tankless
or heat pump?
Compare how each system works and what a useful installation quote should cover.
PROJECT PLANNINGPlan for your home.
And your local conditions.
Winter water, the equipment location and the right permitting conversation.
Choose with a clearer picture.
Start with your household. Finish with a plan worth discussing.