Answer: Change your furnace filter… read on:
One of the most important elements of keeping your furnace running as efficient as possible is routine changing of your furnace’s air-filter. It’s easy to do. It’ll save you money, and, on unnecessary service calls. Basically, for you and your family, the simple routine changing of your home’s furnace filter will save you a bunch of headaches.
We compare it to routine changing of your car’s oil. The difference being anybody can easily change a furnace filter, it only takes a few minutes. Some filters, depending on the type of furnace you have are inserted sideways, some are inserted flat, and, they come in different sizes, but it’s not a big deal, your furnace is made so it can be easily done by the homeowner. And, make sure you do it when the furnace is off; it’s just safer that way.
When a furnace filter hasn’t been changed, and it needs to be, your furnace will still run – to a point, (a built in safety feature will shut it off automatically eventually) but your good air-flow is getting blocked, which means your system has to “labor” that much harder to get that nice comfortable temperature you want in your home. This means a lot less efficiency in flow delivery, and, your fuel bill goes up.
Too much gunk on your furnace filter causes an “air flow traffic jam,” your thermostat will never be satisfied, and, at times, it’ll let you know it by a “whistling” sound coming from the furnace. The filter “whistling” is saying “change me – change me.”
Below are links to a few videos on changing your furnace’s air-filter.
Well, from the people at South Hills Electric Heating Cooling, we hope we helped a little.