A number of air-conditioning system is designed to cool the room instead of the whole house. While the central air conditioners often require higher voltage connections in the room air conditioner may often be connected to any 15- or 20-amp, 115-volt household circuit. If you have a larger room air conditioner may need a special 115-volt circuit. Only in the most extreme cases, you ever need a special 230-volt circuit.
Room air conditioners are often vented or window mounted in such a way that they can effectively expel the hot air.
Please note that there is an energy efficient air conditioning alone won’t have a big impact on your energy bills as using an approach that involves the whole house. If you combine proper maintenance and modernization of equipment with sufficient insulation, weatherisation and thermostat settings, you can reduce your electricity bill by 50%.
Maintenance is always important to keep your unit operating at peak efficiency. Make sure to replace the filter and clean the coils will help ensure unit lasts. Proper operation is also important, keeping windows and doors closed will be important, along with good insulation. Other common problems which may lead to a drop in performance will freon leak or electrical fault.
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