To run at peak efficiency, heating, ventilation and air conditioning (HVAC) unit must be kept clean. Efficiency saves power which, in turn, saves money.
Watch the 1-minute video above and learn how to replace an air filter. HVAC air filters should be changed at least quarterly, with more frequent replacements in certain homes:
Be aware, however, that not all air filters are created alike.
When it comes to air purification, you often get what you pay for as The Carey Brothers prove in this other 1-minute video. Using “The Salt Test”, we see with our own eyes how 99-cent filters are inferior to $16 ones.
The good news is that quality air filters can be found cheaply online.