Endless hot water — with fine print
Tankless heaters earn their keep in the right house: long stays, high daily demand, tight floor space, and a gas line that can feed them. In the wrong house they are an expensive way to get the same shower. This hub separates the two — flow rates by climate, the gas-line and venting upgrades that hide inside quotes, and the homes where tankless never pays back.
Inside this hub
- Flow rate (GPM) explained in showers and laundry loads, not brochure numbers
- Cold-climate derating: what a 9.5 GPM unit really delivers in January
- Condensing vs. non-condensing, and the drain nobody mentions
- Descaling, filters and the yearly maintenance tankless actually needs
Start with the flow-rate guide, or run the calculator to see the size your climate demands.