FAQ
Let's address some frequently asked questions about AC power consumption.
Q: Can I run two window ACs on a single 15-amp circuit?
A: It depends on the wattage of each AC unit. A 15-amp circuit at 120 volts provides approximately 1800 watts of power (15 amps x 120 volts). If each AC unit consumes less than 900 watts, you can theoretically run both. However, consider the starting surge and leave some headroom for safety.
Q: How can I tell if my AC is energy efficient?
A: Look for the Energy Efficiency Ratio (EER) or Seasonal Energy Efficiency Ratio (SEER) rating on the AC unit. Higher numbers indicate greater efficiency. Energy Star certified models are also a good choice.
Q: Will running my AC constantly damage it?
A: Running your AC constantly won't necessarily damage it, but it can shorten its lifespan and increase your energy bill. It's more efficient to use a programmable thermostat to cycle the AC on and off as needed.
Q: Is it better to leave my AC on all day or turn it off when I leave?
A: This depends on several factors, including your home's insulation and the climate. In general, if you're only going to be gone for a short period (an hour or two), it's more efficient to leave the AC on. However, if you'll be gone for longer, it's better to turn it off and let the house warm up. When you return, the AC will have to work harder to cool the house down, but it will still save energy overall.