Our Stiebel has been running for 2 years now with a perfect track record so far. It supplies hot water to 2 bedrooms in the back of the house. We live in OKC, OK and can have some pretty cold temps outside but the Tempra 24 keeps up and can kick out enough hot water even on those really cold mornings when you need a good HOT shower.
I got the Tempra "Plus" because it will restrict flow rate to maintain water outlet temp if necessary, something the standard Tempra will not do. Also, its nice to have the digital display on the front of the unit, so you can see whats going on when the unit is in operation. We have the temp set to 128F; the max output temp is 140F. It's totally silent in operation, only thing I notice is that it actually will slightly dim the lights in the house when it kicks on.
Installation is simple enough, with the electric feed being the most difficult part to get done at my house. We have the heater mounted in a closet in our hallway, where it just hangs on the wall taking up no room at all. The 24 does require very heavy electric feed to produce such a large temp rise with cold inlet temps, while keeping total flow rate high enough for a hot shower. The electric requirement is 2 x 60 amp single phase 240v circuits. That's a total of 240 amps maximum going to this beast - more than many homes can supply having only 200A service at the main panel (240 amps because each 240v single phase circuit consists of 2 legs of 120v so you'll need room for 4 60A breakers in your panel - plus the main CB must support the 240A max draw)
Efficiency: all I can say is WOW. Ditching out liquid propane fired hot water tank was one of the best decisions I've made. Now we only pay for the hot water we use instead of keeping 50 gallons hot 24/7. This has reduced our LP use a bunch - our monthly LP bill dropped substantially. I can't precisely say how much we're saving by ditching the LP system (since we also run LP heat here on very cold days) but its between $20 and $40 bucks a month. Our electric bill hasn't changed either, and we have a precise record of our electric use as reported by our "smart" meter on the house.
All in all, I give it 5 stars because of its superb performance, efficiency, ease of installation, and high quality design + construction.
| Brand | Stiebel Eltron |
|---|---|
| Special Feature | Advanced Flow Control, temperature memory presets, energy efficiency |
| Color | White |
| Wattage | 18000 watts |
| Voltage | 208 Volts |
| Style | Tempra 24 Plus (Discontinued Model) |
| Mounting Type | Wall |
| Is Electric | Yes |
| Manufacturer | Stiebel Eltron |
| Item Depth | 5.2 inches |
| UPC | 094922100672 784497732131 987652362826 |
| Manufacture Year | 2018 |
| Global Trade Identification Number | 00094922100672 |
| Part Number | Tempra 24 Plus |
| Item Weight | 16.1 pounds |
| Product Dimensions | 21.7 x 20.1 x 9.6 inches |
| Item model number | Tempra 24 Plus |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Certification | certified frustration-free |
| Special Features | Advanced Flow Control, temperature memory presets, energy efficiency |
| Included Components | tankless heater |
| Batteries Included? | No |
| Batteries Required? | No |
| Warranty Description | 7 years leakage/ 3 years parts |
