MasterTherm Heat Pump

MasterTherm heat pumps provide unattended and year-round heating of your property. A ‚fit and forget‘ system, there is little interaction necessary between homeowner and heat pump aside from a regular service by the installer. The low operating cost of a heat pump provides great savings, ensuring a quick return on investment..

What is the efficiency of the heat pump?

Efficiency and COP (the ratio between output and input) of the heat pump is dependent on the temperature difference between the primary source of heat (e.g. earth, air, water), and the required temperature of the water in the heating system. The larger the temperature difference, the lower the efficiency of the heat pump performance.

The highest efficiency heat pump is when it is combined with a low temperature heating system (e.g. underfloor heating or wall heating). MasterTherm heat pumps are equipped with a standard weather compensator that controls the temperature of the heating system depending on the outside air temperature. This achieves the best possible efficiency of the heat pump in all operating conditions.

Warms up enough to your house?

The heat pump is able to seamlessly heat any property, should the unit be adequately sized. Although the system is capable of providing 100% of the demand, it is quite common for the system to be integrated with another source; a bivalent system. Commonly integrated with solar thermal, during the summer this can provide the majority of the hot water requirement.

Air Source Heat Pumps (Air-Water)

We recommend to size the heat pump so that the system covers 100% of the demand at temperatures to -3° C without the use of additional sources; monovalent operation. The heat pump alone covers the majority of heat consumption. In the event of extremely low external temperatures, the heat pump may be supplemented by a second heat generator (LPG boiler etc); bivalent operation. This operation is more common in retrofit installations of older properties where the existing boiler is retained.

Ground/Water Source Heat Pumps (Ground-Water/Water-Water)

We recommend to size the heat pump so that the system covers 100% of the demand at temperatures to 0° C without the use of additional sources; monovalent operation. The heat pump alone covers the majority of heat consumption. Collectors placed in the ground/water are less susceptible to weather change and so dips in temperature do not place as much strain on the system.

There is no real benefit to fitting a second heat generator (LPG boiler etc) as the source temperature does not fluctuate severely. Should you opt for a bivalent system, there may be certain cost savings involved (smaller collector required).

The Microgeneration Certification Scheme (MCS) dictates that all heat pumps (unless bivalent) should be sized to meet 100% of the demand of the building (domestic applications only).