Heat Pump Explorer
Air–Water 7 · 10 · 15 kW Proven classic
HOTJET ZETXe
Reliable alternative to ZETXp
Same platform as ZETXp, proven by thousands of installations. Inverter, 3 circuits as standard.
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Air–Water 7 · 10 kW The coming standard
R290
HOTJET ZETXp
Natural refrigerant R290, GWP 3
Natural R290 propane refrigerant with minimal climate impact. Ready for EU regulations beyond 2027.
Learn more → Air–Water 15 · 20 kW Higher output
R290
HOTJET 15-20 ZETXp
R290 propane for larger buildings
Three-phase 400V power, larger housing. For family homes, apartments and commercial buildings with 10–30 kW heat loss.
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Air–Water 10 · 15 kW All indoors
HOTJET ZETXi
Complete indoor installation
No outdoor unit, no noise for neighbours. Ideal for terraced houses and dense residential areas.
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Ground–Water 7 · 10 · 15 kW Ground–Water
HOTJET Wx
Most efficient, longest lifespan
Geothermal source = stable output all year round. SCOP over 5, lifespan 25+ years.
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Water–Water 7 · 10 · 15 kW Water–Water
HOTJET Wx Coax
No intermediate exchanger, direct output
Coaxial heat exchanger directly in the borehole. Fewer components, higher efficiency.
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Air–Water 5 kW Compact
HOTJET Mini
Smallest air-source heat pump
Minimal dimensions, maximum output per m². Passive houses, low-energy buildings.
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Air–Water 20 · 25 · 35 · 45 · 55 kW Indestructible
HOTJET ONE2
Simple. Robust. Reliable.
Minimal component count, maximum serviceability. Engineered to run trouble-free for years.
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Accessories 70 kW Accessory
HOTJET FW
Flow-through DHW module
Hygienic hot water without a tank. Plate heat exchanger 70 kW, flow rate 25 l/min.
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Accessories Accessory
HOTJET HMD
Hydromodule – wall-mounted hydraulic unit
Complete solution in one cabinet: Siemens control, 7.5 kW electric boiler, circulation pump, 3-way valve and webserver.
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Accessories Accessory
HOTJET RZ
Switchboard – control & protection
Electrical cabinet with Siemens control. Manages heating circuits, boiler, pumps and valves.
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Hybrid 10 + 25 kW Hybrid
HOTJET H25/10
Pellet boiler + heat pump in one
Hybrid system: 25 kW pellet boiler + 10 kW heat pump. Siemens controller picks the cheapest source.
Learn more → 24/7 Remote Monitoring
We monitor your heat pump online. We diagnose issues before you notice them.
PV-Ready
Automatic use of surplus energy from solar panels. Charge the tank when the sun is shining.
Everything included
Controller, 3-way valve, pool valve, mobile app. No surcharges.
Why Hotjet?
Competitors often charge extra for “feature packs”. With us, everything is included in the base price.
Made in the Czech Republic
Full control over every step. From design to dispatch, everything in Bolatice.
R290 propane
Natural refrigerant with GWP 3. Ready for EU regulations ahead of the competition.
Mobile management
Siemens Cloud. Control, monitoring and diagnostics from anywhere.
Individual approach
Tailored consultation and advice. 28,000+ references as proof.
28,000+
installations in Europe
20
years of experience
A+++
energy class
Not sure which heat pump is right for you?
We’ll help. No obligation, no sales pressure.
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