Type & Selection
The selection cluster: tank vs tankless, gas vs electric, heat-pump / hybrid, a type selector, and condensing vs conventional gas — labeled cost, efficiency (UEF) and lifespan comparisons. Labeled planning typicals — confirm on the EnergyGuide label and the manufacturer's instructions; gas, venting, combustion and code are a licensed professional's call.
Typical published planning values — NOT a certified spec or professional advice. Efficiency, sizing and life vary by unit and installation; confirm on the EnergyGuide label and the manufacturer’s instructions. Water-heater installation, gas, venting, combustion, the temperature-&-pressure relief valve, and the scald / Legionella tradeoff of a temperature setting are a licensed plumber / gas fitter, manufacturer-instruction and local-code matter — not engineered here.
Tank vs TanklessCompare a tank vs a tankless water heater on upfront cost, running cost, hot-water supply, lifespan and space, and get a recommendation for your priority.Gas vs ElectricCompare gas vs electric water heaters on running cost, efficiency, recovery and installation, and get a recommendation for the priority that fits your home.Heat-Pump / Hybrid Water HeaterSee the heat-pump (hybrid) water heater profile: a UEF near 3.5, big running-cost savings, and the warm-space and clearance trade-offs to check first.Water-Heater Type SelectorMatch the water-heater type to your home: pick a priority and get a recommended type, backed by a labeled matrix of UEF, lifespan and installed cost band.Condensing vs Conventional GasCompare condensing vs conventional gas water heaters on efficiency (UEF ~0.90+ vs ~0.60), venting and upfront cost, with a recommendation for your priority.
Every Type & Selection tool is calculated server-side — visible immediately — with its formula, a worked example and a reference table, and works on the routine you measure and the prices you enter from your own quotes. Background reading is in the guides.