Hotjet WX Ground-to-Water Heat Pump

Type: Ground-to-water
Source: Ground collector / borehole
Regulation: Inverter (variable speed)
Control: SIEMENS
Cooling: Flexible (passive + active)
Operation: Heating, cooling, DHW

HOTJET WX ground-to-water – stable output all year round

Underground temperatures are constant. While an air-source heat pump has to work harder in freezing weather, the WX ground-to-water has a constant heat source – delivering higher COP and lower running costs.

Copeland inverter, Siemens control, passive and active cooling. Energy class A+++.

Why ground-to-water

Stable output – independent of weather, heats the same in January as in March
Higher COP than air-to-water – the source stays at a constant 8–12 °C
Quiet operation – no fan, no outdoor unit
Free passive cooling – in summer, use the ground’s natural cool directly, without the compressor
38–40 dB – virtually inaudible

Two types of ground source

Horizontal collector – pipes at 1.2–1.5 m depth, requires sufficient plot area (approx. 2× the heated floor area)
Vertical borehole – 50–150 m deep, smaller plot, higher investment, hydrogeological survey required

Included in Delivery

Heat pump (heating + cooling)
Siemens control
Electric boiler
Circulation pump
Webserver + app for iOS/Android

Type	Ground-to-water
Source	Ground collector / borehole
Regulation	Inverter (variable speed)
Control	SIEMENS
Cooling	Flexible (passive + active)
Operation	Heating, cooling, DHW

WX ground-to-water	7 Wx	10 Wx	15 Wx
Compressor	Copeland Scroll Variable Speed
Models	7 Wx / 10 Wx / 15 Wx
Suitable for heat losses	4–9 kW	5–15 kW	10–22 kW
Output min/max (B0/W35)	2.6–9.4 kW	3.6–13 kW	5.5–19.7 kW
Heating output / COP B0/W35	3.7 kW / 5.1	5.3 kW / 4.95	7.97 kW / 4.8
Maximum output water temperature	65 °C
Sound power LWA B0/W35	38 dB	39 dB	40 dB
Energy class (with regulator)	A+++/A+++
Weight	132 kg	137 kg	142 kg
Dimensions (w × d × h)	594 × 694 × 1000 mm
SVT code for subsidies	SVT31212	SVT31211	SVT31210