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Unitherm: Take a closer look at Exhaust Air Heat Pumps

There’s a new kind of heat pump – one that doesn’t require an external unit in the garden or fixed to the exterior of a property – that is getting rave reviews in some sections of the heating industry – and one of the first of its kind is available now from renewable heating specialists Unitherm (stand E110).

Exhaust Air Heat Pumps work by drawing pre-heated, stale and humid air from bathrooms, utilities, kitchens and other wet areas of the home, passing it through a heat pump, which extracts the energy, and exhausting the cold stale air out of the home through a vent. The energy extracted by the heat pump is then used to heat radiators or underfloor heating, as well as a hot water cylinder, which is contained inside the all-in-one exhaust air unit.

An advantage of using an exhaust air heat pump is that you use the indoor air, which is always warm, as an energy source. The energy content of this indoor air is considerably higher than cold outdoor air. Another advantage is that the dwelling’s extract ventilation is provided for within the heating system. The indoor air becomes comfortable and no separate ventilation fan is needed.

While exhaust air heat pump systems are relatively new to the market, Unitherm is no stranger to the technology. Unitherm selects its exhaust air heat pump suppliers based on two key parameters; their system performance, and the innovation present in their units. The design and integration of exhaust air heat pumps into any project requires a total building evaluation and careful attention to detail.

Unitherm’s team of engineers is expert in exhaust air heat pump technology and has developed its own in-house software, ‘Unicalc’, to design systems to the highest standards with particular emphasis placed on enthalpy calculations. From system design, to compliance and commissioning, you’re covered with Unitherm.

The EAHP has a COP (efficiency) of 500%+ – that’s 9 times more than a central plant and 6 times more than a gas boiler. The savings to the end user are substantial over the lifetime of the system.

The new exhaust air heat pumps from Unitherm are the e-VEN 3.5kW and 5kW units that ventilate the home, collecting energy from the air before it leaves the building. It handles the ventilation via its duct connection, provides domestic hot water and space heating with control of up to two independent heating zones.

The capacitive graphical touch screen, the Bluetooth and the wi-fi connection and the intuitive cloud based Android/iOS/web application makes this system easy to use and monitor.

You can see the new exhaust air heat pumps on show at the Unitherm stand (E110) at InstallerSHOW.

Also brand new on the stand you’ll find the new Phase Change Material (Heat Battery) – eSTOR which is a thermal energy storage cylinder and heat battery system available in 5kW and 10kW options that is tuned for use with a low temperature heat pump but compatible with multiple heat sources – heat pumps, boilers and solar PV systems. It offers emergency back-up storage of thermal energy and offers load shifting ability to help reduce costs by lowering tariffs.

Also worth finding out about at the show is Unitherm’s highly popular underfloor heating options, information on Unitherm’s Training Centre, its MCS Sign Off Service that takes all the hassle out of installing heat pumps for installers and the range of Vaillant, Panasonic and LG air source heat pumps supplied.

Book your free visitor pass and head for the stand to talk to the friendly Unitherm team about your projects and training needs, or visit www.unitherm.co.uk

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