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Thread: Combined ventilation unit with Heat exchanger & chiller unit (domestic installation)

  1. #1
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    Default Combined ventilation unit with Heat exchanger & chiller unit (domestic installation)

    I am looking for a ventilation unit that will allow me to draw hot stale air out and draw in fresh air that can be heated (if necessary) from the stale air being expelled. The ventilation unit will draw from 5 bathrooms and also a 'hub cupboard' containing electronic equipment (hot air) and then feed fresh air back in to the house via outlets (upstairs and downstairs). I would also like to be able to cool the incoming air during warmer periods (Spring & Summer). It seems I need a combined heat exchanger/chiller unit but I have no idea who manufactures them for the UK?

  2. #2
    Moderator toscal's Avatar
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    I know they do these in the States.
    Maybe try searching the Home Time website for ventilation systems.
    I think they have also popped up on the Renovation Nation program on Quest with Steve Thomas. I did see a system that basically took the stale air from the ceiling and roof spaces, then extracted the heat via a heat exchanger and pumped in fresh warm air. It also had a chiller/heating unit attached to it as well.
    Have you looked on Ventaxia's website or Xpelair
    IF YOU CAN'T FIX IT WITH A HAMMER, YOU'VE GOT AN ELECTRICAL PROBLEM.
    www.casatech.eu Renovation Spain Blog

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    Thanks for the feedback. Checked out all the links and Home Time is US based so was useful but I am based in the UK so need UK or european suppliers. Looked at Ventaxia and Xpelair and will follow up. Also found a company in Holland called Recair http://www.recair.com/contact-information/ and have emailed them requesting more tech data. If I can find a unit that can cool and heat passing air then next step will be to integrate with a controller that can open and close certain vents based on room occupancy.

  4. #4
    Moderator toscal's Avatar
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    Most US manufacturers for this type of system will have a EU version or can ship a 220V/240V version. I do know of a few people who have bought Carrier AC/Heat Pump inverter type units in the US and had them shipped over to Spain, worked out cheaper than getting the units in Spain. Mind you these are big heating and cooling units that provide AC in summer and underfloor heating in the winter, they also automatically switch over from one to the other. Spares would be the only problem.
    IF YOU CAN'T FIX IT WITH A HAMMER, YOU'VE GOT AN ELECTRICAL PROBLEM.
    www.casatech.eu Renovation Spain Blog

  5. #5
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    Try searching for MHRV - Mechanical Heat Recovery Ventilation. Lot's of UK suppliers, try somewhere like the homebuilding and renovation website for a start. http://www.homebuilding.co.uk/
    I fitted one to our house about 6 years ago when we completely renovated it, very similar to yours by the sound of it, extractors in the kitchen, bathrooms (4), utility and my from above 'Node 0' where the servers and kit live. The house never feels stuffy and the bathrooms are nice and dry feeling without mechanical extractors running. I bought mine from http://www.allergyplus.co.uk/ and fitted it myself. They were very good with helping with the design and tips for fitting it.

    Hope this helps
    Kevin W.

  6. #6
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    Thanks to both toscal & Kevin, very useful info and I have been in contact with a number of UK based vendors who will come and survey (for free) and enable me to determine airflow rates and best locations for the incoming and outgoing vents. It will all come down to quality and cost as usual For the record, the most suitable companies for my requirement appear to be Envirovent http://www.envirovent.com/ and CVCDirect http://www.cvcdirect.co.uk/index.html

    Thanks again for your input !!

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