When to commission the MVHR

[Adsibob]

We have almost finished plastering. Of the three floors, two are mostly done and the ground floor is half done. We won't be able to finish the ground floor for another few weeks. I'm keen to get the MVHR going soon, as the place could do with better ventilation. My understanding is that the risk of switching the machine on before the house is dust free is that all the pipes and the machine itself will get dirty with dust.

If I were to clean the rooms which are dust free, and keep the ducts closed on all the other rooms, could i just run the MVHR in the clean rooms until the others are clean?

[JohnMo]

We commissioned ours before the floor covering were down, but now (3 months later) have to replace all the filters, which I knew about and a cost I was planning for.  But also ensure you install filters in all extract points not just in the mvhr unit.

 

Until the floor covering, the paint etc is in place there will be dust.

[Adsibob]

Hmmm, maybe I should hire some fans and ventilate that way. Annoyingly, builders are too cold to keep the door open…