Your garage might not be the first place you think of when you see a high electric bill. But it can quietly waste energy every month. Many people overlook simple habits or setups in their garage that cost them money. These mistakes are easy to make, and they add up over time. If you want to lower your electric bill, start by looking at your garage. Here are seven common garage mistakes that could be driving your electric bill up—and what you can do about them.
1. Leaving the Garage Door Open Too Often
It’s easy to leave the garage door open, especially if you’re working on a project or just running in and out. But every time you do, you let outside air rush in. In summer, hot air pours in and makes your garage—and sometimes your house—warmer. In winter, cold air does the same. This forces your heating or cooling system to work harder, using more electricity. Try to keep the door closed as much as possible. If you need ventilation, open a window or use a fan instead. Even a few minutes with the door open can make a difference, especially during extreme weather.
2. Using Old or Inefficient Garage Lighting
Many garages still use old fluorescent or incandescent bulbs. These lights use more electricity than modern LED bulbs. If you leave the lights on for hours, the cost adds up. LEDs use less power and last much longer. They also give off less heat, which helps keep your garage cooler in the summer. Swap out old bulbs for LEDs. You’ll see a drop in your electric bill, and you won’t have to change bulbs as often.
3. Running a Second Refrigerator or Freezer
A lot of people keep an extra fridge or freezer in the garage. It’s handy for drinks or bulk food, but it can be a big energy drain. Older models are especially bad—they use much more electricity than newer, energy-efficient ones. And if your garage gets hot in the summer, the fridge has to work even harder. If you really need a second fridge, make sure it’s an Energy Star model. Otherwise, consider unplugging it when you don’t need it. You can also check if your utility company offers rebates for recycling old appliances.
4. Poor Insulation and Air Leaks
Garages are often poorly insulated. Gaps around doors, windows, or walls let outside air in and inside air out. This makes it harder to keep your home at a steady temperature. If your garage is attached to your house, this can affect your whole home’s energy use. Seal cracks and gaps with weatherstripping or caulk. Add insulation to the walls and ceiling if you can. Even insulating the garage door can help. These steps keep your garage more comfortable and lower your electric bill.
5. Charging Power Tools and Devices All the Time
It’s easy to leave battery chargers plugged in, even when you’re not using them. Many chargers draw power even when they’re not charging anything. This is called “phantom load” or “vampire power.” Over time, it adds up. Unplug chargers when you’re done. Use a power strip to make it easier to turn everything off at once. This small habit can save you money every month. It also helps your chargers and batteries last longer.
6. Storing Heat-Producing Appliances in the Garage
Some people keep space heaters, dehumidifiers, or even old computers running in the garage. These appliances use a lot of electricity. They also make the garage warmer, which can affect your home’s temperature. If you need to use these devices, try to limit how long they run. Look for energy-efficient models. And always turn them off when you leave. If you’re using a dehumidifier, empty it often so it runs efficiently.
7. Ignoring Smart Technology
Smart plugs, timers, and thermostats can help you control energy use in your garage. But many people don’t use them. A smart plug can turn off lights or appliances automatically. A timer can make sure your garage door closes after a set time. A smart thermostat can control heating or cooling if your garage is climate-controlled. These tools are easy to set up and can save you money without much effort. If you’re not using smart tech in your garage, you’re missing out on easy savings.
Small Changes, Big Savings
Your garage might seem like a small part of your home, but it can have a big impact on your electric bill. Fixing these common mistakes doesn’t take much time or money. But the savings can be real. Start with one or two changes and see how your bill responds. Over time, these small steps add up. You’ll use less energy, save money, and make your home more comfortable.
What garage mistakes have you noticed in your own home? Share your tips or questions in the comments below.
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