Paurav

Thanks for your responses and suggestions folks! I feel comfortable of fitting wall vents now and may go for 2nd floor ceiling vents above the high open internal voids to take in most hot rising air for recycling. My thought is, with heigh voids across of 3 floors, an air recycling system between ground to ceiling will be highly beneficial. Haven't found any MVHR system with cooling yet, but would be good to get fresh cold air during few hot and humid days we get in London. Please send your best unit/system suggestions. As we are in initial stages of the build, we have designed and are aiming for max air tightness or <5 m3/hr/m2 with no leaky door and window seals. The kitchen extractor has air seals too. Trickle vents can all be replaced with MVHR ducts and should not be needed anymore. Only opening for a few times a day would be our front door to enter/exit the house. Although, its hard to measure what figure we could get at this stage and I need to form a decision for MVHR immediatly. We got Stroma involved and I will be speaking to their ventilation experts during next week. Thanks for suggesting BPC, I will send our plans for their advise too.

Hello, We are building an end-terrace house. Its a 2 bed house with living space and kitchen on the ground, one bedroom on the first floor and one on second (loft conversion). The house has 2 x high voids from ground floor to the 2nd floor ceiling (sloping roof in the front and flat roof at the back). It was struggle to get our fire strategy approved, but we finally have it approved too. At present, we are building the concrete slabs and beams and bricks are on site. We have decided to hire Stroma for environmental checks who will initiate their works soon. Being a tech guy, I am too keen on having an eco-friendly house and feel fitting an MVHR will bring lots of benefits in terms of heat recovery, fresh air, more oxygen, etc. But am concerned on the requirements of having too many ducts and vents. Please feel free to answer on these questions for me to move more towards a firm decision: 1. To avoid having too many ducts running across the floor, can we fit the entire system on a single side-wall with all wall vents in the bathrooms and rooms at all levels? i.e. can we have a complete system without a ceiling vent? In worst case, we can have vents in the roof, but feel it will need a lot of ducts. 2. Would be be feasible to fit the main unit on ground floor? 3. What will be vastest cost effective small sized system which can send in oxygenated/healthy air and also have cooling functionality? Thanks, P