No signup. No hidden inputs.
Put your room into the equation.
These screening tools show their assumptions. They help you ask better questions; they do not replace model documentation or a professional load calculation.
Room AC sizing
Start with the ENERGY STAR room-size table, then adjust for sun, occupants, and kitchen use.
Calculate →Tool 02Electricity cost
Estimate kWh and cost from input watts, schedule, duty cycle, and your electricity rate.
Calculate →