Event three of our series of four half-day Passivhaus events held in conjunction with AECB CarbonLite.

What Building Services are necessary for a Passivhaus? This half day session explores the different services required in true low energy buildings.

The second part of the session looks at how the choice of fuel for heating and hot water system can be different from conventional buildings: The Passivhaus requirement for heating systems is to produce a continuous trickle of heat, rather than a conventional system switched on and off by a time switch.

The design of hot water systems can be improved to minimize losses, using radial plumbing in small diameter pipes, and there is a short group exercise on this. The definition of Primary Energy is explained and how to pass the Passivhaus requirements for this, in particular the effect of fuel choice and the difficulties communal heating systems can bring.