Hotjet WX Water-to-Water Heat Pump

Type: Water-to-water
Source: Underground or surface water
Regulation: Inverter (variable speed)
Control: SIEMENS
Cooling: Flexible (passive + active)
Operation: Heating, cooling, DHW

HOTJET WX water-to-water – COP up to 6.4

Underground water stays at around 10 °C year-round. That’s the most stable heat source available – which is why the WX water-to-water achieves COP up to 6.4. Every kilowatt-hour of electricity produces over six kilowatt-hours of heat.

Same platform as the WX ground-to-water: Copeland inverter, Siemens control, energy class A+++.

Why water-to-water

COP 6.4 – the highest efficiency of any heat pump type
Lowest running costs – stable source = minimal compressor input
Quiet operation – 38–40 dB, no fan
Passive and active cooling – use the water’s natural cool in summer
Weather-independent – performs the same at -20 °C or +35 °C outdoors

What you need

Source well with sufficient flow rate
Absorption well for returning cooled water
Hydrogeological survey – water quality (iron, manganese) and source capacity
Water extraction permit

Included in Delivery

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

Type	Water-to-water
Source	Underground or surface water
Regulation	Inverter (variable speed)
Control	SIEMENS
Cooling	Flexible (passive + active)
Operation	Heating, cooling, DHW

WX water-to-water	7 Wx	10 Wx	15 Wx
Compressor	Copeland Scroll Variable Speed
Models	7 Wx / 10 Wx / 15 Wx
Suitable for heat losses	4–10 kW	5–15 kW	10–20 kW
Output min/max (W10/W35)	4–11 kW	4.5–15.2 kW	7–23 kW
Heating output / COP W10/W35	4.5 kW / 6.4	6.3 kW / 6.4	9.46 kW / 6.2
Maximum output water temperature	65 °C
Sound power LWA	38 dB	39 dB	40 dB
Energy class (with regulator)	A+++/A+++
Weight	130 kg	135 kg	140 kg
Dimensions (w × d × h)	594 × 694 × 1000 mm
SVT code for subsidies	SVT31215	SVT31214	SVT31213