Mechanical heat recovery ventilation

MHRV (outgoing warm air warming incoming cool air) has been a project in itself! In October we were still waiting for the main unit (even though we paid Allergy Plus in full at the end of June). John threaded the pipes with Alec in September

And connected the supply and extract ductwork to the plenums with Patrick. It was like a jigsaw puzzle where all the bits had to fit exactly as well as avoid the posi floor joists

External grilles and the internal ductwork still need to be connected to the unit in service void in the cloakroom (we have now the unit!)