HeatingToo Big, Too Small, or Just Right?

furnaceSelecting the right furnace for your home might feel like something out of a children’s tale: you have to find the system that is just right. An oversized or undersized furnace can leave you dealing with a handful of issues, costing you both time and money. The best thing that you can do to avoid furnace repair in Everett, WA is to have your system professionally installed.

One common misconception amongst homeowners is that if the furnace physically fits within the space where it is housed, then it will work just fine. Without consulting with a trained professional, homeowners make decisions based on what will fit rather than what their home’s specific needs are. This usually leads to the purchase of an oversized or undersized unit. Below, we have listed the implications of installing an oversized or undersized furnace, as well as the tell-tale signs that your system might not be a good fit. 

Oversized Furnaces

There are many homeowners that believe that installing an oversized furnace is a smart choice since they think it’ll provide them with fast, sufficient heat. However, an oversized furnace generates way too much output. Often this leads to the thermostat shutting down the furnace before it’s had a chance to complete a full heating cycle. This puts a large amount of stress on the system, causing it to wear down faster.

Your furnace might be oversized if you notice:

  • High heating bills: Inefficiencies cause utility bills to skyrocket.
  • Short-cycling: Your system repeatedly turns on and off multiple times throughout the day.
  • Uneven heating: Some rooms might be significantly hotter than others.

Undersized Furnaces

An undersized furnace will put out too little heat to keep your home warm. Therefore, the furnace will stay on far longer than it’s designed to in an attempt to properly heat the home. This puts a tremendous amount of strain on the system, resulting in overworked parts. This will cause your system to wear down much faster than it is supposed to.

Your furnace might be undersized if you notice:

  • You are cold: If you’ve set a warm temperature and you are still cold, your furnace might be too small.
  • High heating bills: A small furnace will be inefficient, leading to costly utility bills.
  • Long run time: The furnace will run for extended amounts of time.

A Perfect Fit

Properly sizing a furnace doesn’t just mean getting the right physical dimensions, though that is important. A professional technician will look at the overall output of the system relative to the size of your home in order to determine if the furnace is an appropriate size. We recommend hiring a professional, as they are able to get a much more accurate calculation of how large your furnace needs to be.

Our technicians here at G & S Heating, Cooling, & Electrical can help you select the perfect furnace for your home. We start by planning what needs to take place before you actually purchase a furnace. We understand that not all furnaces are good for all homes, and there are a number of factors that need to be considered before installing one, including proper sizing.

For all of your furnace needs, contact G & S Heating, Cooling, & Electrical.


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Office: M-F 8am - 5pm
Services: 24/7
3409 Everett Ave,
Everett, WA 98201
1404 Riverside Drive, Suite G
Mount Vernon, WA 98273

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