Look for the . A higher UEF indicates a more efficient heater. While high-efficiency models cost more upfront, they often qualify for federal tax credits or local utility rebates that can offset the price gap. 5. Check the Warranty and Features
: Small homes with limited space or users who want "endless" hot water for back-to-back showers.
The first step is determining what powers your home. Switching fuel types (e.g., gas to electric) is possible but often involves expensive retrofitting.
: The most common type, featuring an insulated tank that keeps a reservoir of water hot and ready.
: These pull heat from the surrounding air to warm the water. They are incredibly efficient—often using 60-70% less energy than standard electric tanks.