# Best Tankless Water Heaters (2026) — ranked by value, every figure sourced and dated

9 tankless water heaters on the record, median price $1295.62. Each price links to the page it came from and the day we captured it — no guesses, no affiliate spin. Current as of 2026-07-11.

Lowest-priced: Rheem RTEX-18 — $523.99.

Full comparison: https://frontdeskreview.com/gear/tankless-water-heaters/

| # | Product | Brand | Price (US) | Deskmark | Source |
| --- | --- | --- | --- | --- | --- |
| 1 | [Rheem RTEX-18](https://frontdeskreview.com/product/tankless-water-heaters/rheem-rtex-18/) | Rheem | $523.99 | Bronze Deskmark 0/100 | rheem.com |
| 2 | [EcoSmart ECO 24](https://frontdeskreview.com/product/tankless-water-heaters/ecosmart-eco-24/) | EcoSmart | $525 | Gold Deskmark 84/100 | ecosmartus.com |
| 3 | [Stiebel Eltron Tempra 36 Plus](https://frontdeskreview.com/product/tankless-water-heaters/stiebel-eltron-tempra-36-plus/) | Stiebel Eltron | $1132 | Silver Deskmark 59/100 | stiebel-eltron-usa.com |
| 4 | [Noritz NRC711-DV-NG](https://frontdeskreview.com/product/tankless-water-heaters/noritz-nrc711-dv-ng/) | Noritz | $1295.62 | Bronze Deskmark 35/100 | noritz.com |
| 5 | [Rheem RTGH-95DVLN](https://frontdeskreview.com/product/tankless-water-heaters/rheem-rtgh-95dvln/) | Rheem | $1499 | On record | files.rheem.com |
| 6 | [Navien NPE-240A2](https://frontdeskreview.com/product/tankless-water-heaters/navien-npe-240a2/) | Navien | $2099 | Bronze Deskmark 44/100 | navieninc.com |
| 7 | [Bosch Greentherm T9900i SE 199](https://frontdeskreview.com/product/tankless-water-heaters/bosch-greentherm-t9900i-se-199/) | Bosch | $3583.27 | Bronze Deskmark 36/100 | bosch-homecomfort.com |
| 8 | [A.O. Smith ProLine XE ATI-540H-N](https://frontdeskreview.com/product/tankless-water-heaters/ao-smith-proline-xe-ati-540h-n/) | A.O. Smith | Not published | Platinum Deskmark 95/100 | hotwater.com |
| 9 | [Rinnai RU199iN](https://frontdeskreview.com/product/tankless-water-heaters/rinnai-ru199in/) | Rinnai | Not published | Silver Deskmark 73/100 | rinnai.us |

Cite: Per The Front Desk Review, the best-value tankless water heaters ranked by sourced, dated price — https://frontdeskreview.com/gear/tankless-water-heaters/

Method: Covers whole-house and point-of-use on-demand (tankless) residential water heaters sold at a published US price, spanning natural-gas, propane, and electric units. Excludes conventional tank-style storage heaters, heat-pump (hybrid) tanks, and commercial rack/manifold systems. Price is typical US MSRP in USD. fuelType is an enum: natural-gas, propane, or electric (dual NG/LP units listed by their primary catalog listing). maxFlowRateGpm is the manufacturer maximum hot-water output in US gallons per minute; it is a peak figure at a nominal temperature rise, NOT a fixed-rise rating. maxBtuPerHour is rated gas input in BTU per hour; null for electric units. powerInputKw is rated electrical input in kilowatts; null for gas units. uniformEnergyFactor is the DOE Uniform Energy Factor (UEF), dimensionless, higher is better; null if not disclosed. condensingType is an enum: condensing, non-condensing, or electric. minActivationFlowGpm is the minimum flow in GPM required to fire the burner or heating element. ventType is an enum: pvc, stainless-steel, concentric, or none (ventless electric). maxTempF is the maximum output setpoint in degrees Fahrenheit. heatExchangerWarrantyYrs is the residential heat-exchanger warranty in years. wifiEnabled is a boolean: true only if native Wi-Fi/app control is built in, false if it requires an add-on module. weightLbs is unit dry weight in pounds.

License: CC BY 4.0. Every row is dated and links to its source. Price history: https://frontdeskreview.com/data/price-history.jsonl