1. EEI rating is reduced if the product does not have an automatic thermostat.
2. EEI rating is reduced if the product does not have automatic timers, either daily or weekly
3. EEI rating is reduced if the product does not have distance operation (i.e operated by mobile phone)
4. EEI rating is reduced if the product does not have the ability to sense if the window is open in the room of operation.
5. EEI rating is INCREASED if the product runs on BIOMASS. These type of products (i.e Pellet stoves) have their energy efficiency inflated by 145% because the fuel is renewable.