Water-to-Water Heat Pumps
Vaillant flexoTHERM exclusive — water-to-water heat pumps extract heat from groundwater, highest and most stable efficiency among all types of heat pumps.
Product sorting
List of products
Water-to-water heat pump set Vaillant flexoCOMPACT exclusive VWF 118/4 with...
The Vaillant flexoCOMPACT exclusive VWF 58/4 is a ground-water heat pump with an...
The Vaillant flexoCOMPACT exclusive VWF 88/4 is a ground-to-water heat pump with...
The Vaillant flexoTHERM exclusive VWF 117/4 is a ground-water heat pump for...
Vaillant flexoTHERM exclusive VWF 157/4 is an indoor ground-water heat pump from...
Vaillant flexoTHERM exclusive VWF 197/4 is a premium ground-water heat pump that...
Vaillant flexoTHERM exclusive VWF 57/4 is a ground/water heat pump designed for...
Vaillant flexoTHERM exclusive VWF 87/4 is a premium ground/water heat pump in the...
Listing controls
A ground water-to-water heat pump uses the nearly constant temperature of groundwater (via extraction and recharge wells) as a heat source throughout the year — this allows it to achieve the highest coefficient of performance (COP) among common types of heat pumps, even on freezing days. It requires a hydrogeological assessment and a permit for groundwater abstraction.
Frequently asked questions
- When is an investment in a ground water-to-water heat pump worthwhile? Mainly when there is sufficient groundwater availability on the property and higher heat loss of the building — the higher initial investment (wells) is offset by lower operating costs due to the high COP.