Overnight temp drop 0.3/hour in my MVHR+SIP house, is this good?
Don't know if this is a sensible way to measure the effectiveness of insulation, but I'm interested to know how this compares to, say, a conventionally-built new-build UK house and a new-build passivhaus.
It's 17.5 degrees inside right now at 11am, was 21 at midnight when the heating went off. So that's about 0.3 degrees of temp loss per hour. It's been an average of about -1.5 outside during that time.
The house is very airtight (it was measured when constructed ~15 year
Let's tabulate it.
@jack -0.04 °C.h-1
@SteamyTea -0.132 to -0.296 °C.h-1 can call that 0.21 °C.h-1
@haddock -0.3 °C.h-1
@MikeGrahamT21 -0.33 °C.h-1
@Nick Thomas -0.5 °C.h-1
So my old 1987 house, with some minor modifications, is petty good.
I am not sure how much of that is to do with being a terrace, or small, or at a colder internal temperature, or a higher external temperature.
My place is TF, so can we knock that 'thermal mass' nons