Warmflow heat pumps use the latest variable speed compressor technology to produce heat at the rate you need. This gives the heat pump a wide output range & it automatically modulates within this range depending on your heat demands. To optimise the efficiency of the appliance it is equipped with the latest EC motor variable speed circulating pumps, which matches its speed to the hydraulic resistance and the heat demand of the system and extraction rate of the ground loop. For ease of installation all pumps and sealed heating system components including a 12lÂ expansion vessel are conveniently housed within the heat pump casing. This speeds up installation and minimises wiring and plumbing needed on site. The unit also has an inbuilt monitoring system, which monitors flow temperature, flow rates and system temperatures for easy commissioning. A dedicated wiring centre greatly simplifies connection to external wiring and sensors making this heat pump very installer and service friendly.