Winter Night Energy Flow
| 1) Daylight sensors and motion detectors control electric lighting | 2) Warmed interior structure of home radiates heat at night as interior air temperatures drop | 3) Mitsubishi Zuba high efficiency air source heat pump forced air heating system provides backup heating | 4) Heat drawn from 454 liter (120 gallon) super insulated solar hot water storage tank. |
5) 454 liter (120 gallon) super insulated backup storage tank heated by Mitsubishi heat pump water heater |