What to Do If Your Bill Spikes Unexpectedly (Even Though it's Not Summer)

Brady Hartung
Brady Hartung on Monday, December 1, 2025
Blog Winter Electricity Bills

A higher winter electricity bill can feel confusing, especially when you are not running your AC all day. Even though your usage may seem lower, colder months often trigger patterns that raise energy consumption without you noticing. The good news is that most winter bill spikes have simple explanations, and there are practical ways to lower your electricity bill going forward.

Why Winter Bills Can Rise Even When You Feel Like You Used Less

Winter usage can be sneaky. In summer, we expect higher bills because the AC works hard. In winter, the sources of increased usage are quieter, spread across the day, and often tied to habits you do not think about.

Here are the most common reasons your electricity bill increases during colder months.

Your Heater Uses More Power Than You Think

Electric heating systems draw a lot of electricity, especially when temperatures drop suddenly. Even small thermostat changes make a big difference.

A few things to remember:

  • Heat pumps, space heaters, and electric furnaces can run for long stretches

  • Every degree you raise the thermostat requires more energy

  • Cold snaps trigger longer run times even if you do not notice

Heating is often the single biggest source of winter bill spikes.

Space Heaters Add Up Fast

Space heaters feel harmless because they are small, but they use a surprising amount of electricity.

A typical space heater:

  • Runs at around 1500 watts

  • Costs far more to run for a few hours than many major appliances

  • Adds up quickly if you have more than one running each day

If you use multiple space heaters or leave one on for long periods, the impact shows up fast on your bill.

More Time Indoors Means More Usage

Shorter days and colder weather often mean:

  • More lights left on

  • More electronics in use

  • More cooking

  • More laundry and dishwashing

These small changes stack up and push total usage higher without feeling like a heavy increase day to day.

Holiday Decorations and Guests Add Up

If this spike hits around late fall or winter holidays, extra usage may come from:

  • Holiday lights

  • Hosting guests

  • More laundry

  • More cooking

  • Extra hot water use

Even energy efficient decorations contribute a little, and when combined with heating, the total is higher than expected.

Cold Weather Affects How Efficient Your Home Is

Cold outdoor temperatures change how your home holds heat. You may not notice drafts or gaps until a cold front rolls in.

Common issues include:

  • Drafty windows

  • Old weather stripping

  • Air leaking through doors

  • Poor insulation in attics or older walls

When warm air escapes, your heater works harder and uses more power.

Your Water Heater Runs More in Winter

Water heaters use more electricity in colder months because:

  • Incoming water is colder

  • Showers run hotter and longer

  • Appliances need more energy to heat water

This increases usage even if your number of showers or laundry loads stays the same.

How to Lower Your Electricity Bill in Winter

Here are simple steps that can help bring usage back down.

Warm your home smarter, not harder

  • Keep your thermostat a little lower and use blankets or layered clothing

  • Set a schedule so the heater runs less at night or when you are away

  • Avoid big temperature swings

Use space heaters sparingly

Try limiting them to one room and only when you are present. They should not run all day.

Seal small leaks that let warm air escape

  • Replace worn weather stripping

  • Add simple window insulation film

  • Use door drafts where needed

These small fixes help your heater run less.

Switch to LED holiday lights

They use far less electricity and stay cooler.

Run appliances during lower use times

If you are on a plan like PowerShift, shifting laundry or dishwashing to off peak hours can help lower your bill.

Use Rhythm’s weekly Smart Alerts

These alerts show what you used and what your next bill might look like. That gives you time to adjust before the billing cycle ends.

When Your Bill Spike Might Need Attention

If you see a big jump that does not match the weather or your habits, you might want to:

  • Check for appliances running longer than usual

  • Review your usage patterns through your Rhythm dashboard

  • Make sure no heater, space heater, or water heater is stuck running

  • Look for abnormal spikes in Smart Meter data