Understanding Winter Energy Bills: What’s Normal vs. a Red Flag

By BVHVAC | January 12, 2026

If your energy bill seems higher than usual during winter, you’re not imagining things. Heating your home is one of the biggest energy expenses of the year. While some increase is expected, there’s a difference between a normal seasonal jump and a sign that something’s wrong.

What’s Considered Normal for Winter Energy Bills?

  • Temperatures drop significantly
  • Your heating system is running more often
  • You’re spending more time at home
  • Holiday lights, cooking, and guests increase usage

Most homeowners see a 20–50% increase in winter energy costs compared to fall, depending on weather, home size, and system efficiency.

Tip: Compare your bill to the same month last year, not just the previous month, for a more accurate benchmark.

Red Flags That Could Signal A Problem

If your bill spikes suddenly or continues climbing, your HVAC system or home may be working harder than it should

  1. A sudden, dramatic increase – This could indicate:
    • A malfunctioning heating system
    • Poor insulation or air leaks
    • An aging or inefficient furnace
  2. Your Home Feels Cold Despite High Bill
    • Heat loss through windows or doors
    • Dirty filters restricting airflow
    • A system that’s struggling to keep up
  3. Your System is Running Nonstop
    • Incorrect thermostat settings
    • A system that’s too small for your home
    • Mechanical issues reducing efficiency
  4. Uneven Heating Throughout the House
    • Ductwork leaks
    • Blocked vents
    • Poor system performance

Simple Ways to Lower Winter Energy Costs

  • Change your air filter every 1–3 months
  • Lower your thermostat by a few degrees when sleeping or away
  • Seal drafts around windows and doors
  • Use ceiling fans on low, clockwise rotation to circulate warm air
  • Keep vents clear of furniture and rugs

When to Call us

If high bills continue even after basic fixes, it’s time to schedule a professional inspection. An HVAC technician can:

  • Identify efficiency issues
  • Catch small problems before they become costly repairs
  • Ensure your system is running safely
  • Help extend the life of your equipment

Regular maintenance is one of the best ways to keep winter energy bills predictable and manageable.

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