• MVHR ventilation with auto-humidistat will be controlling humidity levels also.

    Does this work through trickle vents in each room venting out in to central spaces, or does it rely on you having doors open, or are you running ducting pipes to each room? Feels like it will have to shift a significant amount of air if the external surfaces of the room are made airtight?

  • We’re installing a whole-home centralised system, with supply/exhaust ducts to every room. This relies on the whole house being as airtight as possible, with no trickle vents, in order to keep the system balanced and recover as much heat from the exhaust air as possible.

    The system needs speccing and sizing appropriately for the size of your house, and commissioning to suit via adjusting fan flow rates and plenum restriction.

    You can get single-room decentralised ‘dMVHR’ units, but they’re nowhere near as effective

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