: Large families, homes with high-end "spa" showers, and those looking for long-term energy savings. 2. Fuel Type: Efficiency vs. Infrastructure

Buying a unit that's too small leads to cold showers; buying one too large wastes money.

: Known for the most durable electric models, specifically their Marathon series which features a lifetime tank warranty.

: Natural gas units typically heat water faster than electric ones. Many homeowners prefer gas tankless models like those from Rinnai because they can handle high flow rates even in cold winters.

: Simple and safe with no venting required. While standard electric tanks are cheap to buy, they are often the most expensive to run.

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