| KEY COMPONENTS | |
| The minimal key elements of a Passive House typically involve the following: | |
| Passive House element | Typical Passivhaus Standard Required for Irish Climate |
| Super Insulation (walls, floor, roof): | U < 0.15 W(m2K |
| Triple Glazing: | U < 0.8 W(m2K) |
| Mechanical Heat Recovery Ventilation: | Heat recovery efficiency > 75% |
| Small capacity back-up heating system: | Pellet boiler, compact unit, gas, etc |
| Heat delivery: | Normally through air ducting, but could be underfloor heating or radiators |
| Solar shading: | Often required over south facing windows to prevent overheating in summer |
| Household appliances: | A-rated recommended |
| Lighting: | CFL or LED recommended |
| On-site renewables: | Thermal solar collectors for domestic hot water recommended |
| Precise detailing of your project will ultimately require testing and verification in the PHPP software | |
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