Green Building Bible, Fourth Edition |
These two books are the perfect starting place to help you get to grips with one of the most vitally important aspects of our society - our homes and living environment. PLEASE NOTE: A download link for Volume 1 will be sent to you by email and Volume 2 will be sent to you by post as a book. |
Vanilla 1.0.3 is a product of Lussumo. More Information: Documentation, Community Support.
Posted By: Simon StillThey're not in any way similar....
The Airflow is a metal cased unit with a 570m3 max extract
The Kinetic BH is an ABS plastic case and 245m3.
Posted By: GotanewlifeI spent quite some time comparing MVHR units and 'no' I am confident that comparisons, in the form of Which tables et al, are not around. It is actually not so difficult once you realise that SFP can be calculated when not given. Just draw up your own table!
The Airflow has v sophisticated filters and everything is easily accessible, my Brookvent fails miserably against these criteria. If you really needed the max output of the Airflow you would need 3 Brookvents (still save nearly £50 though!). etc.
Posted By: cjardI just wonder where the premium goes
Posted By: joe90 I also dont see the point in paying double the cost for something 10% better.Neither did I until I started crunching the numbers.
Posted By: Simon StillApologies, I should have said the Kinetic Plus BH - VA's docs imply it's good for houses up to 280m2. Airflow's docs on the 145 imply it's good for houses up to 300m2..I thought it was all about cubic volume (m3) not square meterage (m2)? Confused!?
Posted By: ringiOn full priced elec that is about £70 per year assuming you are heating for half of the yearObviously any losses outside of the heating season are irrelevant but I am not sure exactly how PHPP assesses ventilation losses, whether the total ventilation loss is an annual figure or whether it is calculated purely as losses that add to the heat demand.
Posted By: cjardOne of the things I just LOVE about this building lark is that every question leads to.. more questions, more possibilities, and more struggle to make a decision.So having done as previously suggested, I contacted Airflow and got a quote. I have a house with a utility/boot room, open plan kitchen/family room (cathedral ceiling) , 3 bathrooms, a small toilet, 4 bedrooms (the master has a cathedral ceiling) and a large lounge - giving a volume for the house of 1070m3. As a result I'm told I need 2 Airflow Duplexvent units. Great!!
Posted By: GotanewlifeI like 0.5 ac/h for ballpark estimation purposes (for sizing the MVHR Unit) and to me having really roughly worked out from your house volume how much air you need to shift,But if what Gotanewlife says is right, I only need one Airflow unit, as the spec says one unit has a maximum air flow of 594m3/hr.
Posted By: cjardmore questions, more possibilities, and more struggle to make a decision.
Posted By: cjardI couldn't easily find the airflow info in the brochure though.
Posted By: TriassicBut if what Gotanewlife says is right [0.5ACH], I only need one Airflow unit, as the spec says one unit has a maximum air flow of 594m3/hr.
I have a house with a utility/boot room, open plan kitchen/family room (cathedral ceiling) , 3 bathrooms, a small toilet, 4 bedrooms (the master has a cathedral ceiling) and a large lounge - giving a volume for the house of 1070m3
Posted By: GreenfishNot sure on best way to deal with kitchen (extract) opening onto family room (supply) either.Well Airfow have suggested we extract around the cooker area and supply fresh air at the opposite corner of the room.
Posted By: GreenfishAlso how does the volume of extact rooms (kitchen, baths, utility) compare to the supply ones?I would say the extract rooms account for less than a 1/4 of the total.
Posted By: GreenfishLess that Gotanewwife's ideal ave of 0.5
Posted By: TriassicWhy would you have an extract in walk in wardrobe or the double height hall way?Don't know, why do you ask?
Posted By: GreenfishI will ask, I'd assumed there was a technical reason. I've also noticed the linen cupboard also has an extract? Does every room (other than kitchens and bathrooms etc) have to have an air inlet?Posted By: TriassicWhy would you have an extract in walk in wardrobe or the double height hall way?Don't know, why do you ask?