Common HVAC Myths Debunked – Insights from The Heat Shop Geelong

February 24, 2026
News,

When it comes to heating and cooling, there’s no shortage of advice floating around. Unfortunately, much of it is outdated or simply incorrect. At The Heat Shop Geelong, we often help homeowners separate fact from fiction so they can stay comfortable while keeping energy costs under control.

Myth 1: Bigger systems heat and cool better
An oversized system may seem like a good idea, but it can actually reduce comfort and efficiency. Units that are too large cycle on and off frequently, wasting energy and creating uneven temperatures. Correct sizing ensures consistent comfort and lower running costs.

Myth 2: Closing vents saves energy
Many people close vents in unused rooms hoping to reduce energy use. In reality, this can disrupt airflow and increase pressure in ductwork, forcing the system to work harder. Keeping vents open maintains proper balance and efficiency.

Myth 3: Thermostat adjustments heat or cool faster
Turning the thermostat to extreme temperatures won’t speed things up. HVAC systems work at a steady rate, so setting realistic temperatures improves comfort and avoids unnecessary energy use.

Myth 4: Maintenance isn’t necessary if the system works
Even if your unit seems fine, dust buildup, worn components and clogged filters reduce efficiency over time. Regular servicing helps extend system life, improve air quality and prevent costly breakdowns.

Myth 5: Ceiling fans cool rooms
Fans don’t lower the temperature — they circulate air to create a cooling effect on your skin. Using fans alongside your air conditioning can improve comfort while allowing higher thermostat settings.

Understanding these common myths helps you make smarter decisions about your home comfort. If you want reliable advice or a system check-up, the experienced team at The Heat Shop Geelong is ready to help you stay comfortable year-round.