Don't Be Fooled By These 6 Common HVAC Myths!

When it comes to heating and cooling your home, there’s a lot of misinformation out there. Many homeowners fall for common HVAC myths that promise energy savings or better performance but actually do more harm than good. These misconceptions can lead to higher energy bills, unnecessary wear on your system, and even costly repairs. 365 Mechanical is here to debunk six of the most common HVAC myths so you can make informed decisions and keep your system running efficiently all year long. Don’t let these myths fool you—let’s set the record straight!

Myth 1: If it’s not broke, don’t fix it.

Fact: Regular HVAC maintenance is a smart, cost-effective way to keep your home comfortable year-round. Over time, dust and debris build up, making your system work harder, increasing energy costs, and leading to more frequent repairs. Routine maintenance prevents small issues from becoming costly breakdowns, extends equipment life, and boosts efficiency. Investing in regular upkeep is a simple way to protect your comfort and save money long-term. 365 Mechanical offers a year-long maintenance plan including two clean and checks a year.  You also get year-round member benefits, adding extra value and peace of mind.

Myth 2: You only need to change your filter once a year.

Fact: For clean air and optimal HVAC performance, change your filter every three months. Dust, dirt, and allergens build up over time, restricting airflow and making your system work harder. This reduces efficiency, raises energy bills, and adds wear to your equipment. Regular filter changes improve air quality, boost efficiency, and extend your system’s lifespan.

Myth 3: Closing the vents in unoccupied rooms helps save money and is more efficient.

Fact: We've all done this, right? Closing vents in unused rooms may seem like a way to save energy, but it can actually harm your HVAC system. It increases air pressure in the ducts, leading to leaks, reduced efficiency, and potential damage. Your system is designed to heat or cool a specific area, and closing vents does not reduce the amount of heating or cooling it produces. Instead of saving money, it makes your system work harder, raising energy bills and causing unnecessary strain. Keeping vents open ensures balanced airflow, efficiency, and a longer system lifespan.

Myth 4: Thermostat placement doesn’t matter.

Fact: Thermostat placement plays a crucial role in the efficiency and effectiveness of your HVAC system. If placed near heat sources, sunlight, or drafts, it may misread temperatures, causing your system to run too long or shut off too soon. This can lead to discomfort and higher energy bills. For accurate readings, better efficiency, and consistent home comfort, it’s essential to place the thermostat in a central location away from these temperature fluctuations.

Myth 5: Duct tape can be used to repair ducts…It’s called duct tape.

Fact: Despite its name, duct tape isn’t suited for ductwork repairs. It can’t withstand extreme temperatures and will dry out, peel, or lose adhesion over time and potentially make the problem worse. While certain types of foil tape are made for duct repairs, they’re not typically something homeowners have readily available. Instead of a temporary fix, professional duct testing ensures proper sealing and long-term efficiency.

Myth 6: You should only run your HVAC system when you need it.

Fact: Turning your HVAC system on and off as needed may seem efficient, but it actually uses more energy. Variable-speed systems run at lower, steady speeds, often as low as 25% capacity, using less energy than single-stage systems that operate at full power with frequent stops and starts. A smart thermostat can help regulate usage, preventing unnecessary heating or cooling when you're away. Running your system consistently at optimal speeds improves efficiency, reduces wear, and lowers energy costs.