Mvhr design & costs

[lizzieuk1]

Morning all,

 

So architect has suggested it better to get the mvhr design done for the regs submission, says it will assist with meeting the part O Overheating requirements.  

Obv something we need to sort anyway so looking for advise/ suggestions for design & expected costs.

We are happy to install to save costs there though. 

 

Is bpc a good start? Not sure if I'm up to doing the full design but happy to have a go if it's achievable - bit concerned about time as need it fairly soon for bc submission and got another project on the go currently. 

 

[JohnMo]

Best place is read many of the previous threads that ask this very same question. They will guide you through the design process. There are many house designs and quoted costs. An installed system can be any where in the region £6k to 12k even more. We were quoted (192m² single storey) £10k, so did my own for under £2k.

 

Go on to the Paul heat recovery web site also, there is loads of information on there about design, flow rates etc.

[Adsibob]

3 hours ago, lizzieuk1 said:

says it will assist with meeting the part O Overheating requirements.

I don’t think this can be right. MVHR will not cool your house.

[Lofty718]

Architects are often totally clueless about a lot of things, do your own research and save a fortune😁

[G and J]

Pinch of salt needed with respect to your architect’s comments.

 

Our part O analysis was done by the same person who did our as designed SAP.

 

All they needed to know was that there will be MVHR, not the details.  
 

We are now building and at some stage info will be needed by our BCO re flow rates, etc.  but thats for later.

 

Free quotes are easily available but they don’t give you a design for free.  Methinks an interim design could easily be done by yourself if needed, you don’t have to implement it if later you go for a design and supply contract.  

[lizzieuk1]

On 07/06/2025 at 15:09, G and J said:

Pinch of salt needed with respect to your architect’s comments.

 

Our part O analysis was done by the same person who did our as designed SAP.

 

All they needed to know was that there will be MVHR, not the details.  
 

We are now building and at some stage info will be needed by our BCO re flow rates, etc.  but thats for later.

 

Free quotes are easily available but they don’t give you a design for free.  Methinks an interim design could easily be done by yourself if needed, you don’t have to implement it if later you go for a design and supply contract.  

Yes, my thoughts as well! I'm not sure why he thinks bc will need the mvhr design at this stage - we're keen to get the basics submitted but not going overboard so we can actually start building!

[lizzieuk1]

On 07/06/2025 at 14:32, Lofty718 said:

Architects are often totally clueless about a lot of things, do your own research and save a fortune😁

We've certainly had that experience previously, but, as not installed mvhr before or had to deal with part O, I was feeling a bit out of my depth disagreeing with him at the time.