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HVAC Tips

Why Your Heat Bills Spike in December—and How to Keep Them Down

December is here in Bel Air—cold mornings, chilly nights, and suddenly your energy bill is higher than expected. If you’re wondering why your heat costs seem to skyrocket, you’re not alone. Your HVAC system works harder in winter to keep your home warm and comfortable, but there are steps you can take to reduce strain and save money.

Let’s explore the main reasons your December heating bills climb—and what you can do about it.

Why Your Heating Costs Increase in December

  1. Colder Outdoor Temperatures – The colder it gets outside, the harder your HVAC has to work to maintain a comfortable indoor temperature. Even a few degrees can significantly increase energy use.
  2. Longer Run Times – With shorter days and longer nights, your heater runs more hours each day. That consistent runtime naturally drives up your energy bill.
  3. Drafts and Poor Insulation – Leaky doors, windows, and poorly insulated areas let warm air escape and cold air in. Your system has to run longer to compensate.
  4. Clogged or Dirty Air Filters – Restricted airflow forces your system to work harder, wasting energy and increasing bills.
  5. Thermostat Settings – Setting your thermostat too high, or keeping it at a constant temperature, can cause your heater to run excessively. Even a few degrees lower can save energy without sacrificing comfort.

Simple Ways to Reduce Your Heating Costs

  • Adjust Your Thermostat: Try lowering the temperature by 2–3 degrees and use programmable or smart thermostat settings to reduce runtime when you’re asleep or away.
  • Replace or Clean Air Filters: Regular filter maintenance improves airflow and efficiency.
  • Seal Drafts and Insulate: Check doors, windows, and attics for leaks or gaps to keep heat inside.
  • Use Ceiling Fans Wisely: Running fans clockwise on low pushes warm air down from the ceiling.
  • Close Unused Rooms: Limit heating to occupied spaces to reduce energy use.

When to Call a Professional

If you’ve tried these tips and your heat bills are still higher than expected, it may be a sign of a bigger issue—like a malfunctioning thermostat, leaky ducts, or an inefficient system. Ignoring these problems can lead to higher costs and potential breakdowns.

Let Aire Serv of Bel Air Help

At Aire Serv of Bel Air, we specialize in diagnosing HVAC issues that drive up heating costs. From system tune-ups and duct inspections to thermostat optimization and filter replacements, our trained technicians help your home stay warm, comfortable, and energy-efficient all winter long. Don’t let high heat bills take over this December—contact us today!

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About Aire Serv

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At Aire Serv, we strive to keep the air in which we live and breathe comfortable and clean, so people live healthier, happier lives. Since 1992, our brand has stood for excellence and putting customers first. When you see the name Aire Serv, you can expect quality services and customer attention. With over 200 locations across the United States and Canada, Aire Serv is a trusted name in the field of heating and air conditioning installation, maintenance, and repair.

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