: A family of four typically needs a 50-gallon tank . If you have five or more people, look toward 75–80 gallons .
What’s powering your home? Your choice here is often dictated by your existing setup. which water heater to buy
: Large families, homes with high-end "spa" showers, and those looking for long-term energy savings. 2. Fuel Type: Efficiency vs. Infrastructure : A family of four typically needs a 50-gallon tank
: A leader in high-efficiency condensing tankless systems that capture heat that would otherwise be lost through the exhaust. The 2026 "Smart" Edge Your choice here is often dictated by your existing setup
: These are the reliable workhorses. They have a lower upfront cost and are generally easier to install. However, they suffer from "standby heat loss" (reheating the same water all day) and can run out during back-to-back showers. Best for : Tight budgets and straightforward replacements.
: The "efficiency king" of 2026. These pull heat from the surrounding air to warm the water. They can be 3–4 times more efficient than standard electric tanks, often paying for themselves in energy savings within a few years. 3. Sizing Your System