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Common HVAC Myth: Closing Vents in Unused Rooms Saves Money

Let’s Clear the Air About a Persistent Heating Myth

One of the most common misconceptions we encounter at Lambert Heating & Air Conditioning is that closing vents in unused rooms will save money on heating costs. This widespread belief actually couldn’t be further from the truth, and here’s why:

What Really Happens When You Close Vents

When you close vents in unused rooms, you:

  • Create increased pressure in your ductwork
  • Force your furnace to work harder against the added resistance
  • Potentially cause damage to your heating system
  • Risk creating cold spots that could lead to frozen pipes

The Science Behind It

Your HVAC system is designed to heat your entire home based on its square footage. When you close vents, you’re not making the system more efficient – you’re actually disrupting the balanced airflow it needs to operate properly.

The Better Solution

Instead of closing vents, we recommend:

  • Getting regular maintenance for optimal efficiency
  • Installing a programmable thermostat
  • Ensuring proper insulation throughout your home
  • Having your ductwork professionally inspected

If you’re concerned about heating costs in your Sioux Falls area home, contact Lambert Heating & Air Conditioning for a professional evaluation of your system’s efficiency. We’ll help you find real solutions that actually save money while maintaining your comfort.