Please post any feedback, comments or discussion points.
Hi The committee
Very good agm etc. a few comments with regard to the debate on Passiv Haus and net zero carbon having thought about it since arriving home.
I think that we should aim for net zero carbon but the way to that goal has to be tempered with common sense. In my opinion we have to prioritise in the following way
insulation and airtightness
High efficiency windows and doors
low energy lighting and appliances
heat recovery ventilation
all above to be to Passiv Haus standard
Domestic hot water top up by pellet, logs or fossil fuel.
I agree with Cath Hassels comments about not discouraging the use of renewables which seems to be the committees stance, they should be secondary to the envelope but encouraged where possible, they are valid in the reduction of co2 emissions.
Then if a client can afford it we have to have the possibility to fit pv and solar thermal and rain harvesting and wind turbine (minimum viable size 5kwp, if site is suitable)
so orientation has to be correct, ducting fitted for cables and flow and return pipes for solar thermal on all builds at an early stage.
From my experience pv and wind are very effective trouble free technologies which should not be dismissed lightly, some if not all of my clients are willing to pay the price for these and I wouldn't want the AECB to discourage them, obviously after the initial Passiv Haus details have been satisfied. If the client cannot afford them at the time of building it should be simple to install them later, they are effective.
If there is a possibility of community ownership and larger installations these should be encouraged because of the far greater efficencies possible but my clients tend to be one offs.
Solar thermal whilst being the most cost effective technology is not the easiest for the uninitiated to cope with and probably the technology most badly set up and ineffective.
As was mentioned we have to educate people, they have to understand the working of their houses and the effort that may be required keep them running efficiently.
Mob : 07970 119107 www.touchwoodhomes.co.uk