This time of year we get allot of furnace service calls. Most of them are complaints that the furnace is just blowing cold air. This is typically a safety feature feature that has either malfunctioned, or is working just fine. The main safety feature that does this is called a high limit control, this device keeps the internal temperature of the furnace from getting to hot. If the furnace overheats the limit switch will recognize the problem and shut off the burners leaving the blower on. This allows the furnace to cool back down. On some furnaces if the limit switch is activated for more than three minutes it will lock out the furnace for three hours. The easiest way to diagnose this is to shut the power off to the furnace and turn it back on, of this fixes it for a few moments, than this is the problem.
You can prevent these problems from changing your filter on a regular basis. If you have a one inch thick filter I recommend changing your filter on a monthly basis. (even of the package says longer) If you have gone a long time without changing your filter and this problem persists, you might need a tune up, or a repair. A tune up will allow us to go inside the furnace and clean out the blower, adjust the gas input and make sure everything is running smooth. Good luck, and let us know if we can help out in any way.
Knowing a few things about your home heating system and furnace may save you from having to call someone if you have no heat.
ReplyDeleteFurnace Toronto
Learning a thing or two about your furnace will definitely benefit you when it breaks down or if you simply need to check it. It is true that some furnaces have a certain threshold of temperature, and when it reaches it, the system will automatically shut down to prevent damages. Therefore, furnaces are somewhat different from one another, and it will be great if you can ask a professional for some knowledge or techniques that you can use.
ReplyDeleteDarryl Lorio
This was us all winter long, I hate the cold. It was a pretty tough winter but I made it though it. I'm on the hunt for furnaces in Edmonton I might be able to replace with because I can't deal with a winter like that again. We would turn the heat on or up and it would just be cold air more than seventy percent of the time. I guess we'll see what I can get, wish us luck!
ReplyDeleteGreat tips! I didn't have many problems with my furnace in Edmonton this winter, but I am just expecting it to give me a lot of issues this upcoming winter.
ReplyDelete