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| When it comes to heating and cooling your home, there’s no shortage of advice—especially on the internet. But not everything you hear about HVAC systems is true. In fact, believing some common myths could be driving up your energy bills or even damaging your system over time. At Precision Temperature, we’re setting the record straight. |
 1. Myth: Closing vents in unused rooms saves energyTruth: Closing vents can actually throw off your system’s airflow balance, making it work harder and less efficiently. Modern HVAC systems are designed to distribute air evenly, and blocking that flow can lead to pressure build-up, duct leaks, and even damage to your system’s components. |
 2. Myth: Lower you set the thermostat, the faster your home coolsTruth: HVAC systems cool at a set rate. Setting the thermostat to 60°F when you want 72°F doesn’t cool things faster—it just makes your system run longer than necessary, wasting energy. |
 3. Myth: Bigger HVAC systems are always betterTruth: Oversized systems can cool or heat your home too quickly without properly dehumidifying the air or distributing airflow evenly. This leads to hot and cold spots and can shorten the lifespan of the equipment due to short cycling. |
 4. Myth: You only need to change your filter once a yearTruth: Most homes need a filter change every 1–3 months—especially in dusty environments, if you have pets, or during heavy use in summer. A clogged filter restricts airflow, reducing efficiency and increasing wear and tear. |
 5. Myth: Maintenance is unnecessary unless something breaksTruth: Regular HVAC maintenance is like an oil change for your car—it keeps things running efficiently and catches small problems before they become expensive repairs. Routine inspections extend system life and save money over time. |
 6. Myth: Ceiling fans cool a roomTruth: Fans don’t lower the temperature—they move air to help you feel cooler. Leaving them on in empty rooms wastes electricity. Use fans to complement your AC, not replace it. |
 7. Myth: Duct tape is fine for sealing air ductsTruth: Despite the name, duct tape actually performs poorly on HVAC ductwork, especially over time. Instead, use mastic sealant or foil-backed tape rated for HVAC systems. |
| Want to Cut HVAC Costs the Right Way? Understanding how your system works—and avoiding common mistakes—can go a long way toward lowering your bills and preventing costly repairs.If you’re not sure whether your system is running as efficiently as it should, give us a call. Our team at Precision Temperature is happy to help with inspections, maintenance, and honest advice. 📞 619-588-5321 📍 Serving all of San Diego County |
