Determining the appropriate allocation of the electric bill when one roommate has purchased a personal air conditioner can be a matter of negotiation and agreement between the roommates. There is no definitive rule on this matter, as it depends on the specific circumstances and the agreements made within the household. However, here are a few factors to consider when discussing the issue:
Individual usage: If the roommate with the personal air conditioner is the primary user and benefits significantly from it, it may be reasonable to expect them to cover the additional electricity costs associated with running the device.
Overall apartment temperature: If the personal air conditioner significantly affects the temperature and comfort of the entire apartment, including common areas, it may be appropriate to share the additional electricity costs among all the roommates.
Energy efficiency: Consider the energy efficiency of the personal air conditioner. If it is an energy-efficient model that consumes less electricity compared to other cooling options, it may be fair for the roommate with the air conditioner to pay a smaller portion of the additional costs.
Roommate agreement: It's important for roommates to have open and honest communication about the situation. Discuss and come to an agreement that everyone finds fair and reasonable. This may involve considering factors such as usage patterns, the size of the apartment, and the financial situations of each roommate.
Ultimately, the key is to establish a consensus that considers the needs, preferences, and financial circumstances of all the roommates. Clear communication and compromise are essential in finding a solution that works for everyone involved.