The cost of a Stiebel Eltron water heater varies widely depending on the model, capacity, and where you buy it, but it is positioned as a premium brand so it costs more upfront than budget brands. In the US in 2026, a small point-of-use tankless model like the DHC 3-1 or DHC 4-2 for a single sink costs around $200 to $350. A mid-size whole-home electric tankless like the Tempra 24 Plus, suitable for a small apartment or warm climate, costs around $600 to $750 for the unit alone. Larger whole-home models like the Tempra 36 Plus, which can supply two bathrooms simultaneously, cost around $800 to $1,000. Their heat pump water heaters and Accelera storage heat pump models are significantly more expensive, ranging from $2,500 to $4,000. Wall-mounted room heaters like the CK 15 cost $150 to $300. Installation is extra and typically costs $300 to $1,000 depending on electrical work needed, as most Tempra units require multiple dedicated breakers and heavy gauge wire. While the initial cost is higher, Stiebel Eltron units are self-modulating and highly efficient, often saving 15 to 20 percent on water heating costs compared to conventional electric tanks, which helps offset the price over time.
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