Achieving CSH Level 3 - Exemplar 1a - End Terrace/Semi Detached 2 storey house MECHANICAL VENTILATION WITH HEAT RECOVERY APPROACH
BUILT FORM
Semi-detached 2 storey house
Ground floor area 45.65m2, first floor area 45.65m2
Sheltered sides = 1
THERMAL ENVELOPE
'U' values for external elements
VENTILATION
Design air permeability = 4.0 m3/hour/m2 at 50 Pa
Mechanical ventilation system with heat recovery (system SAP Appendix Q registered)
Kitchen + 2 additional wet rooms
Rigid, insulated ductwork
Specific fan power = 0.75 w/l/s
Heat exchange efficiency = 69%
HEATING AND HOT WATER
Gas fired condensing combi boiler - 90.3% efficient, SEDBUK band A
No secondary heating to lounge
LIGHTING
10 no. fixed dedicated low energy light fittings
CONSTRUCTION DETAILS
Accredited construction details used
SPECIAL FEATURES
Flue gas heat recovery system applied to boiler.