If your HVAC system is 10 years old or more, it probably has a single-speed air handler. A new energy efficient A/C with a variable-speed air handler has many advantages over the single-speed model. Here are some important benefits of upgrading to a variable-speed air handler.
A single-speed air handler can only run at one speed. It cycles between zero capacity and 100 percent throughout the day, delivering air using its full capacity regardless of your home’s demands. This is inefficient because full air delivery is usually needed for only a short period of time.
On the contrary, a variable-speed air handler adjusts its speed to deliver the exact amount of air needed, so it only consumes the amount of energy that your home requires. It runs nearly continuously, which means it doesn’t have to cycle on and off as frequently, making it consume less energy.
You’ve probably experienced that loud gush of air that comes from the ductwork when single-speed handlers start up. They also generate fan noise because they operate at maximum speed. Variable-speed handlers are quieter because they operate at lower speeds, and turn on and off less often.
Better Indoor Air Quality
When a single-speed air handler is off, contaminants remain suspended in the indoor air, which can exacerbate allergies and asthma. A variable-speed air handler works almost continuously, pushing air through the filter more frequently. Air is also pushed at a slower speed, allowing the filter to capture more contaminant particles.
Reduced Wear and Tear
Variable-speed air handlers cause less damage to HVAC systems than single-speed handlers because they don’t cycle on and off repeatedly.
A single-speed handler cycles on and off, causing temperature fluctuations. During an off cycle, your home can cool excessively as hot air rises. A variable-speed handler makes your house more comfortable by eliminating temperature swings.