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Symptomes That You Must Need to Replace Your Furnace


Your furnace is 15 years or older

Typically, furnaces that are older than fifteen years will start having maintenance issues, and it is very likely that you will need to at least consider getting a replacement. If your furnace is more than fifteen years old, and the cost of repairs usually amount to 15% of the price of a brand new one, then you need to seriously consider replacing it as it is very likely that it will malfunction again pretty soon. In addition, regardless of the age of the furnace, if the cost of repair is almost 50% of the price of a brand new one, do not go through with the repairs, it is more cost-effective to buy a new one instead.

Popping – This is caused by thermal cycling of some parts of the furnace. Thermal cycling is the expansion and contraction of some of the metal parts of the furnace whenever it turns on and off. If the humming noises have become quite audible then the blower fan motor of your furnace might be malfunctioning. Squealing – If you hear squealing noises then there is certainly something wrong with your furnace’s blower or inducer.

Your furnace is making a lot of noise

Even when they are still brand new, furnaces tend to make a bit of noise whenever they turn on and off. However, if the usual noises are starting to get increasingly louder, and there are a couple of new noises added into the mix, then it might be time to get a brand new furnace.

The following is a list of the common/uncommon furnace noises, and the possible reasons behind them:

  • Rattling – This is usually caused by the ducts getting loose from their brackets, or a loose screw or a piece of sheet metal fell into the duct work, rattling whenever air is pumped through the ducts.
  • Popping – This is caused by thermal cycling of some parts of the furnace. Thermal cycling is the expansion and contraction of some of the metal parts of the furnace whenever it turns on and off.
  • Humming – Usually, the electrical fan motor of your HVAC system will create humming noises, but it should never be too loud, or even noticeable. If the humming noises have become quite audible then the blower fan motor of your furnace might be malfunctioning.

When you notice even one of these signs, then it is quite possible that you need to replace your old furnace.

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