Unopened Dallas contractor crate backed by our 3-Year Warranty.
Engineered and manufactured in Germany to strict industrial tolerances, the Stiebel Eltron Tempra 24 Plus delivers uninterrupted, on-demand hot water for modern residential homes. Designed for whole-house applications.
Automatically adjusts flow during peak household demand to guarantee constant, non-fluctuating water temperature.
Designed and built in Germany with solid copper heating chambers and solid-state microprocessor controls.
Saves up to 12 square feet of floor space compared to 50-gallon conventional water heater tanks.
| Specification | Factory Rating |
|---|---|
| Power Rating | 24 kW at 240V (18 kW at 208V) |
| Amperage Draw | 100 Amps (Requires 2 × 50 Amp double-pole breakers & 2 × 8 AWG wire runs) |
| Max Flow Rate | 4.68 GPM (At 35°F rise); 2.74 GPM (At 60°F rise) |
| Min Flow to Activate | 0.37 GPM (1.4 L/min) |
| Working Pressure | 150 PSI max (tested to 300 PSI) |
| Plumbing Connections | 3/4-inch NPT male brass fittings |
| Specification | Factory Rating |
|---|---|
| Heating Element Material | Solid copper cylinder chambers with nichrome bare-wire elements |
| Temperature Range | 68°F – 140°F (20°C – 60°C) digital adjustable |
| Dimensions (H × W × D) | 14-1/2" × 16-5/8" × 4-5/8" |
| Weight | 15.4 lbs (7.0 kg) |
| Certifications | ETL listed to UL 499, CSA certified, Lead-Free compliant |
| Warranty | 3-Year Limited Warranty on parts & copper chambers |
Ships insured from 5800 Industrial Blvd, Dallas, TX with free hydraulic liftgate unloading at your driveway.
Seal verified, pallet-strapped, and dispatched within 1 business day.
Carrier tracking link and warranty papers emailed on pickup.
Local terminal calls ahead to schedule your delivery window.
Lowered smoothly to ground level — no dock or forklift needed.
Ordered the Stiebel Eltron Tempra 24 Plus Tankless Water Heater after getting tired of sitting in the dark during Gulf storms. Freight delivery arrived on a liftgate truck right onto my concrete driveway. Hooked it into our manual transfer switch with a 50A cord and ran our central 4-ton AC, two refrigerators, well pump, and all household lights. Electric start fired right up on fuel.
Driver called me 24 hours ahead of time to coordinate delivery. Unit was bolted onto a heavy pallet and wrapped securely. Added oil, connected fuel source, and pushed the start button. Purrs like a kitten and the digital meter makes monitoring voltage and hours simple. Couldn't ask for a better machine at this price point.
The fuel versatility on this Stiebel Eltron Tempra 24 Plus Tankless Water Heater was the main selling point for me. Being able to connect directly to propane or natural gas means no more storing 50 gallons of stale gasoline in the garage. Build quality is solid industrial grade and the frame feels bulletproof.
Tested the wireless remote start from about 80 feet away through the back patio door—started immediately. It is surprisingly quiet for an engine of this displacement. Very impressed with the packaging and complete hardware kit included.
Need transfer-switch sizing, natural gas BTU flow, or liftgate scheduling confirmed before ordering? Talk directly with our Dallas equipment desk.
It requires 240V single-phase electrical service with two separate 50-Amp double-pole circuit breakers and two runs of 8/2 AWG copper wire. A 200-Amp main household electrical panel is recommended.
Unlike cheap heaters that drop water temperature when multiple fixtures turn on, the Tempra 24 Plus automatically slows the flow slightly to ensure every drop comes out at your exact target setpoint.
Yes. In southern and central US climates, it easily supports 2 to 3 simultaneous showers. In northern winter climates, it comfortably handles 1 to 2 simultaneous high-flow showers.
No. Because it is 100% electric, zero combustion or gas venting is required, allowing it to be installed inside closets, utility rooms, or bathrooms.
Because it heats water only on demand and never stores 50 gallons of standby water, it typically reduces water heating energy costs by 15% to 25%.
Groundmark provides free residential delivery from Dallas, TX, a 30-day return policy, and full 3-year warranty backing.
Ships free from our Dallas depot (5800 Industrial Blvd) via insured LTL freight with a 24-hour advance call and hydraulic liftgate lowering to your driveway.
We acquire unclaimed contractor freight allocations directly into our Dallas warehouse. Every unit is 100% factory-sealed (0.0 hrs) with our serialized 3-Year Warranty.
