27 Brutal Mistakes That Are Raising Your Utility Bills Every Month

🔎 Disclosure: Heads up, babe: some links here are affiliate links, which means you might throw a tiny commission my way if you buy (zero extra cost to you). Only things you’d actually use and love get shared on this site.

What Will Change After This Article:

  • Monthly utility bills drop by fixing at least 3 small habits
  • Fewer surprise spikes show up on your power or water bill
  • Energy use becomes more steady and predictable each month

1. Leaving The Thermostat The Same When No One Is Home

An empty house does not need to feel like a hotel lobby, babe.

Start Small With This: Raise the AC by 4 degrees or lower the heat by 4 degrees when leaving for more than 4 hours.

This gets easier if you use a Programmable Thermostat to adjust temps without thinking about it.

2. Running The Dishwasher Half Full Instead Of Waiting

Half loads still use almost the same water and power as full loads, girl.

Here’s What To Do: Wait until the dishwasher is fully packed before pressing start unless something truly smells wild.

3. Washing Small Laundry Loads Instead Of Full Loads

Every load costs water and electricity even if the drum looks sad and empty.

The Easy First Step Is: Combine towels and clothes into one bigger load so the machine runs fewer times each week.

4. Using Hot Water For Every Load Of Clothes

Hot water costs more because the heater kicks on hard.

Use This Simple Trick: Switch to cold for everyday clothes and save hot only for heavy stains.

5. Letting The Dryer Run Twice Instead Of Cleaning The Lint Trap

A clogged lint trap blocks airflow and makes the dryer work longer.

Give This A Try: Pull out the lint screen and clear it before every single cycle.

6. Keeping Lights On In Empty Rooms All Day

Empty rooms do not need stage lighting, bestie.

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Instead, Try This: Flip lights off every time you leave a room even if you plan to come back soon.

7. Using Old Light Bulbs Instead Of LED Bulbs

Old bulbs burn more energy and burn out faster.

Begin With This: Replace the most used bulbs first like kitchen and living room lights.

It will be so much easier if you use LED Light Bulbs that last years and use less power.

8. Leaving Chargers Plugged In All The Time

Chargers still draw small power even when not charging anything.

One Easy Reset Is: Unplug chargers at night or plug them into a power strip you can switch off.

This is less annoying when you use a Power Strip With Switch to cut power fast.

9. Running The AC With Windows Slightly Open

Cool air escapes faster than you think when even one window cracks open.

The Most Doable Way Is: Walk through the house before turning on the AC and close every window tight.

10. Ignoring A Dripping Faucet For Weeks

One drip every second can waste gallons of water over time.

To Avoid Feeling Overwhelmed: Replace the worn washer or call for a quick fix as soon as you notice the drip.

11. Taking Long Showers Every Morning

Extra 5 minutes in hot water adds up across 30 days.

Here’s A Gentle Way To Start: Set a simple 7 minute timer on your phone and finish before it rings.

12. Watering The Lawn In The Middle Of The Day

Midday sun evaporates water before grass absorbs it.

Consider This: Water early morning or after sunset so more water reaches the roots.

13. Letting The Fridge Door Stay Open Too Long

Cold air spills out fast when the door stays open during snack debates.

Here’s A Small Step That Helps: Decide what you need first, then open the fridge and grab it quickly.

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14. Keeping The Garage Door Open With The AC On

Hot air floods in and forces the AC to work harder.

The Easier Approach Is: Close the garage door right away once the car is parked.

15. Not Sealing Small Gaps Around Windows

Tiny gaps let hot or cold air sneak in daily.

Here’s The Shortcut Version: Add weather stripping around drafty windows and doors this weekend.

This feels easier if you use Weather Stripping Tape to seal small gaps quickly.

16. Running The Oven For Small Meals Instead Of A Toaster Oven

Big ovens heat large spaces even for one small dish.

Start By Doing This Instead: Use a toaster oven or air fryer for small meals to cut power use.

17. Keeping The Water Heater Set Too High

Water heaters often run hotter than needed for safety.

If You’re Not Sure Where To Start: Lower the temperature to around 120 degrees to reduce energy use.

18. Ignoring Dirty Air Filters In The AC Unit

Clogged filters block airflow and make the system strain.

Do It Like This: Check and replace the air filter every 2 to 3 months.

This takes less time if you use High Efficiency Air Filters that trap dust and keep airflow smooth.

19. Using Space Heaters In Multiple Rooms At Once

Multiple heaters running together spike electric use fast.

The Less Stressful Way Is: Warm only the room you are sitting in and turn others off.

20. Letting The Dishwasher Air Dry Instead Of Turning Off Heated Dry

Heated dry adds extra energy after the wash cycle ends.

If You Want To Keep It Easy: Turn off heated dry and crack the door open to air dry instead.

21. Using The Washer During Peak Energy Hours

Peak hours often cost more per kilowatt.

Here’s A Quick Way: Run large appliances early morning or late evening when rates are lower.

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22. Forgetting To Turn Off Bathroom Fans

Bathroom fans pull out warm or cool air while running.

The Easy Starting Point Is: Turn the fan off 10 minutes after showers instead of letting it run all day.

23. Keeping The Pool Pump Running Longer Than Needed

Pool pumps draw steady electricity every hour they run.

To Make This Feel Less Heavy: Set the pump timer for the minimum hours recommended for clean water.

24. Leaving Outdoor Lights On All Night

Outdoor lights can run 8 to 10 hours without anyone noticing.

One Thing That Helps Is: Install motion sensors so lights turn on only when needed.

This gets faster if you use Motion Sensor Outdoor Lights to limit run time.

25. Not Comparing Utility Plans Once A Year

Rates change and better plans appear quietly, FYI.

Start This Way: Check your provider’s website once a year to compare current plan options.

26. Letting The Fridge Stay Overpacked And Block Airflow

Overstuffed shelves block cold air circulation inside the fridge.

To Make This Feel More Doable: Leave small gaps between items so air can move freely.

27. Ignoring An Old Or Faulty Thermostat

Old thermostats misread temperatures and cycle too often.

Here’s A Simpler First Move: Replace outdated thermostats with a basic programmable model.

You can make this easier if you use a Programmable Thermostat to control heating and cooling better.


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Lily Thompson

Hey, I'm Lily! I'm a mom who's really good at two things: making life easier and sharing what works. I created ''Like Mom Said'' after one too many moments of realizing: "My mom was right about this." Turns out, a lot of that old-school wisdom still holds up... it just needs a modern spin. Think of me as your friend who's always got a tip (and coffee in hand.)