The monthly cost of running a central air system depends on factors such as the size and efficiency of your unit, local electricity rates, and the climate in your area. On average, homeowners can expect to pay between $60 and $200 per month for central air usage.
Heating, Ventilation, and Air Conditioning (HVAC) systems are what keep you warm in the winter, cool in the summer, and comfortable all year long. In the process of creating this warm or cool air, your HVAC systems consume energy. This ends up having a very big impact on your monthly energy bills.
"It depends on the size of the house, the wattage and the BTUs," said Eric Goranson, a Seattle-based designer and home renovation expert who hosts Around the House, a podcast and nationally syndicated radio show. "But the average monthly cost for most people is anywhere from $70 to $144 a month in the summer."
However, generally speaking, a central air conditioner will consume between 3000 and 3500 watts per hour. While window units use between 900 and 1440 watts per hour, portable units consume between 2900 and 4100.
The average unit has a 500 watt fan, which uses almost as much energy over the course of the year as a refrigerator, resulting in a $50/month bill. During the summer months, the ducts in your attic and close to your walls can fill with warm air, resulting in the fan blowing hot air into your house.
The fan will constantly blow air into your room if you have the thermostat turned “ON.” If it is on “AUTO,” it will only turn the fan on when heated air needs distribution. So yes, running HVAC continuously throughout the day and night is perfectly safe!
With cost as the primary consideration, many people opt to use ceiling fans or standing fans in place of air conditioning to save money. A typical ceiling fan will use about 99% less energy to operate than your central air conditioning unit.
Your AC system uses more electricity if some parts, like the capacitors, motor and condenser, fail. Further, your air conditioner will be less efficient due to too much strain on the functioning parts. If you don't address the issue, your system might experience a total breakdown.
The monthly cost of running a central air system depends on factors such as the size and efficiency of your unit, local electricity rates, and the climate in your area. On average, homeowners can expect to pay between $60 and $200 per month for central air usage.
As it turns out, the most efficient way to keep your home cool and the bills low is to leave the AC running—ideally, with the temperature turned up toward the upper 70s.
If you're wondering whether a central air conditioner is a lot more energy savvy than window types then the answer, quite simply, is yes. Central air conditioning systems are more energy-efficient than window air conditioners, meaning you'll save money on your monthly energy bill.
Air conditioners can cost anywhere between $0.32 and $1.87 to run per hour depending on the type and where you live. Investing in one or more fans for your home can be a great idea to keep your cooling costs down this summer. The upfront cost may be a bit higher but it'll pay itself in no time.
Then you might have a 30,000 BTU air conditioner, which uses approximately 2.5 kW of power when it's running. This means you'd use between 42-48 kWh and pay from $4.62 to $5.28 per day, or about $138-$158 per month.
Well, it depends. After all, turning the AC on and off costs more initially. However, leaving your AC on all day consumes more energy and adds wear and tear to your system, which may cost you more money for repairs in the long run.
When it's hot out, running your central air conditioning can easily account for more than half of your electric bill. If you're on a fixed or tight budget, estimating your monthly bill with central air can help you find strategies to minimize those costs.
While every unit is different, and every homeowner has a different understanding of when their central air conditioner is broken beyond repair, it's fair to say that, with proper maintenance and care, you can expect a good 15 to 20 years of cooling from a new high efficiency air conditioning system.
Central AC is a whole-home cooling system wherein the air is cooled in one location and circulated throughout to/from rooms with fans and through ductwork. Typically, a central AC system uses 3,000 to 5,000 watts per usage hour (running on the cool setting).
Using a calculator to find your average monthly power usage is the easiest way to determine how much energy your AC uses. You can check your energy bill, which will have information on how many units of electricity you used that month and what those units cost.
Although many people believe that it is more costly to turn your AC on and off vs. leaving it on, this is entirely false. People often base this belief on the idea that powering on your system requires a burst of energy, so leaving it running would minimize energy usage by reducing these bursts.
For many of us, 70 degrees is the ideal indoor temperature, but when it is close to 100 degrees outside, your AC unit will be working quite hard to meet these expectations. Consider setting your thermostat at 75 degrees to 80 degrees in your home if the outside temperature is approaching triple digits.
The short answer is yes, it is cheaper to leave your air conditioner on all day. But this does not mean that you should leave it on full blast, keeping your home so cold that you need a sweater or jacket to be comfortable.
The average kWh in the US costs about $0.12 so it costs about $43 per month, or about $520 per year, to run a fan continuously.