Hotjet 15-20 ZETXp Heat Pump
- Type: Air-to-water
- Installation: Outdoor (External)
- Refrigerant: R290 propane (GWP 3)
- Heat loss: 10–30 kW
- Power variants: 15, 20 kW
- Output temperature: Up to 75 °C
- Regulation: Inverter (variable speed)
- Control: SIEMENS (3 heating/cooling circuits)
- Power supply: 400V / 3~ / 50 Hz
- Cascade: Yes
- Defrosting: Reverse cycle
HOTJET 15-20 ZETXp – Higher Output for Demanding Buildings
The high-output variant of the proven ZETXp for larger family homes, apartment buildings and commercial properties. Natural R290 (propane) refrigerant with a GWP of just 3 and output temperature up to 75 °C.
Three-phase 400V power supply and a larger housing (1325 × 605 × 1300 mm) allow coverage of heat losses up to 30 kW. The Copeland YHV scroll inverter compressor ensures energy class A+++ in both categories.
Why 15-20 ZETXp
- R290 propane (GWP 3) – the future of refrigerants, ready for post-2027 EU regulations
- Output up to 75 °C – ideal for older houses with radiators, no need to replace them
- SCOP W35: up to 4.87 – among the highest values on the market
- 400V three-phase power – stable operation for higher outputs
- All features included – PV support, hybrid operation, pool heating, cooling, webserver
- 48–50 dB – quiet operation certified to the strictest standards
- Custom colour finish – powder-coated in any shade
Power Variants
| Model | Building heat loss | Real heating output |
|---|---|---|
| ZETXp-15 | 10–25 kW | up to 22 kW |
| ZETXp-20 | 15–30 kW | up to 29 kW |
Included in Delivery
- Heat pump with heating and cooling function
- Siemens control system (3 circuits)
- Electric boiler 7.5 kW
- Circulation pump
- Webserver + app for iOS/Android
- PV support, hybrid operation and pool heating
Smart Management
Every unit has a built-in webserver with a lifetime Siemens Cloud licence. Access is available to the homeowner (mobile app), the installer and the manufacturer. Remote diagnostics, parameter configuration and predictive maintenance — 90% of service requests are resolved remotely.
R290 and Legislation
R290 propane is not an F-gas — there are no obligations related to refrigeration technician certification. A standard heating installer can perform the installation. After 2027, F-gas regulations in the EU will tighten, making the investment in R290 an investment in the future.
ZETXp vs. ZETXe
ZETXp uses R290 propane and the Copeland YHV compressor with higher efficiency and an output temperature of 75 °C. ZETXe uses the Copeland XHV compressor. Both lines share an identical platform.
| Type | Air-to-water |
|---|---|
| Installation | Outdoor (External) |
| Refrigerant | R290 propane (GWP 3) |
| Heat loss | 10–30 kW |
| Power variants | 15, 20 kW |
| Output temperature | Up to 75 °C |
| Regulation | Inverter (variable speed) |
| Control | SIEMENS (3 heating/cooling circuits) |
| Power supply | 400V / 3~ / 50 Hz |
| Cascade | Yes |
| Defrosting | Reverse cycle |
| 15-20 ZETXp | 15 ZETXp | 20 ZETXp |
|---|---|---|
| Compressor | Copeland YHV Scroll Variable Speed | |
| Refrigerant | R290 propane (GWP 3) | |
| Models | 15 ZETXp / 20 ZETXp | |
| Suitable for heat losses | 10–25 kW | 15–30 kW |
| Output temperature | Up to 75 °C | |
| SCOP W35 (underfloor heating) | 4.87 (A+++) | 4.84 (A+++) |
| SCOP W55 (radiators) | 4.14 (A+++) | 4.13 (A+++) |
| Sound power LWA A2/W55 | 48 dB | 50 dB |
| Energy class (with regulator) | A+++/A+++ | |
| Power supply | 400V / 3~ / 50 Hz | |
| Dimensions (w × d × h) | 1325 × 605 × 1300 mm | |
| Weight | 190 kg | 230 kg |
| R290 refrigerant | 1.3 kg | |
| Heating connections | G 5/4 | |
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