Once our self build is complete I am contemplating starting to build holiday houses (1 at a time) that we would let out most of the year.
The budget would be roughly:
Build: £300000 - 330000
Assuming we would be putting no money ourselves (we would have around £250,000 equity in our new house), does anyone know the best way to finance such a build?
I did self-certify, this is the report I submitted to building control, who happily accepted it, even though it doesn't follow the guidance (I only found the guidance after I'd sent them this) Mechanical Ventilation and Heat Recovery system Test Report.pdf
I'd increase the inlet vents, and if this doesn't do it, increase the inlet fan speed, but try the vents first, as that's the lowest energy loss option.
Thanks for the reply Jeremy. Yes, looking at it I do think I need to get those figures closer. What would be the best approach for this - increase the inlet speed relative to the exhaust or adjust the vents?
Sorry to be cheeky, but do you have a template for your cert that you could share? I'm assuming you self-certified?
TBH, the building regs background ventilation rate is, IMHO, way too high. I run ours a lot lower and we find that the air quality is very good indeed. I have a suspicion that they set the 0.3 l/s per m2 figure following some advice with regard to venting volatile organics from the house furnishings, and I think someone made an error somewhere.
I'd try to get the intake/exhaust rates a bit closer, just for better heat exchanger efficiency, then fudge the data to satisfy building control. I strongly suspect that you wouldn't be the first to do this...