Jump to content

Feeling lost on best ventilation choice


luz624

Recommended Posts

Hello,
 
I am not particularly clued up on the technical world of ventilation, so please bear with me... I have been feeling quite stressed trying to figure out an optimal ventilation system.
I am completely renovating my 70m2 2-bedroom ground floor period conversion flat. As part of this, I will be adding decent insulation, using breather membranes, etc. 
 
While energy saving is important, for me it is definitely secondary to the health goals. I would primarily like to achieve - (1) optimal levels of humidity (to reduce chance of mould, as we have had this previously), and then (2) clean, filtered air (no VOCs, pollen, spores etc filtered out). 
 
I believe a MVHR system is the gold standard, and I am trying to see if that's possible to fit, however I am extremely limited on space. I am trying to see if I could fit in under the bathroom vanity and build a cupboard around it.. however I know that's going to be extremely tight. I think I could maybe get the main unit in, but I'm unsure about distribution boxes. 
 
Alternatively, I have briefly looked at dMEV in each of the wet areas - which could help (1) humidity levels. I would then have to ensure there's adequate ventilation through trickle vents etc in the rest of the property, and use a standalone air filter. 
 
I don't know much about PIV, and if this is an option? Though it looks like space would be an issue with that too. 
 
Any thoughts on best approach?
Link to comment
Share on other sites

MVHR is a game changer in a flat - I have built 92 of then some with and some without. Never had a condensation whinge where we have installed it.

 

Solarcrest have done our stuff (and are doing my house although a 3,000 sq. ft. house doesn't really call for it tbh). Solarcrest supply, install and commission the lot with a 7 year warranty. Others seem to supply and point to a installer - there have been issues for some who have gone down this route.

  • Like 1
Link to comment
Share on other sites

Good to remember that there are rectangular ducts available and reduced size ( 75mm and 50mm ) round ducts too. CVC Direct supplied me with 225mm x 25mm for a project where we managed to hide the equivalent of 92mm round duct in the 35mm service void of an MBC TF build. Not a single bit of boxing in anywhere. They do supply only + design, or supply and fit and, I use them in both capacities with exceptionally good results. Great team and a fantastic pre / after sales support service too.

@luz624 Just read that it's for a flat here, so without plans to show rooms vs outside walls etc it's a little tricky to offer much more advice. Do you have plans you can upload?

  • Like 1
Link to comment
Share on other sites

The external walls are essentially at the front of the property (Victorian terrace), the W.C./shower area, and the extension where the kitchen area is. The rest of the walls are party walls with neighbours. My husband thinks a slimline MVHR unit could be wall mounted where I've marked in green (and then the planned kitchen units pushed in a little). And the unit either boxed into a kitchen cupboard, or a false wall type thing added with a concealed door for maintenance. 

 

The roof here will be a pitched roof, but I'm unsure how the ducting would fit into this (apologies again - all so new to me!)  Could the ducting run through the rafters/insulation.... or would we need a separate service void...? Sorry if that's a stupid question

 

 

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...