Nilans VGU EAHPs operate on a simple principle: They combine a Central extract (CMEV) system with an Air Source Heat Pump for domestic hot water (DHW) production. This way the heat pump runs on peak efficiency all year round and there is good continuous extraction in the kitchen and in all wet rooms.
EAHPs are not MVHR systems and therefore do not recover heat as such.
Exhaust Air Heat Pumps combine a continuous extract ventilaiton system (MEV) with an air source heat pump and a cylinder. These are being used to produce hot water (DHW) and space heating via a wet central heating system.
The advantages are that there is no outdoor heat pump unit needed. Also the coeficiency of performance (COP) of the heat pump is increased as only warm room air is being used to operate the heat pump.
The disadvantage is that there are larger background vents needed in all habitable rooms, often 100mm holes in the external wall with louvres. These can cause drafts, which can sour the user experience.
These systems are often being used in apartments, where plant space is at a premium.
The Nilan Cube 5 (formerly VGU180) is ideal for apartments (45-80 m2), when an external heat pump is not an option. Key parameters:
The Cube 5 is an exhaust air-to-water heat pump with 180l hot water storage. It can produce 226l of 40 deg.C hot water. It can be used for a wet space heating system (radiators), too.
The EAHP is equipped with a supplementary heater, heat pump combination heater and temperature control. The refrigerant is R290.
It is used as CMEV system, extracting from your kitchen, bathroom & other wetrooms, utility and WCs. These rooms should not have background ventilators (trickle vents), but these are needed in all habitable rooms.
This overview shows which Nilan system is suitable for which type of property.
The Cube 5 (VGU180) is suitable for:
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Look here for an overview over the different heating and cooling technologies that we offer.
Nilan VT 300 is a versitile indoor heat pump cylinder that can be used as A) Exhaust Air Cylinder for an MVHR, B) Exhaust Air Heat Pump (CMEV) and C) operated with outdoor air.
The Nilan Compact P/ P2 is a all-in one system, which includes MVHR with heat pump for DHW and space heating/ cooling.
