What are common furnace filter sizes?

What are common furnace filter sizes?

Here are some of the most common furnace and AC filter sizes:

• 10 X 20 X 1”
• 14 X 20 X 1”
• 16 X 24 X 1”
• 18 X 30 X 1”
• 20 x 20 x 1.
• 16 x 25 x 1.
• 20 x 25 x 1.
• 20 x 25 x 4.

How do I know what size filter for my furnace?

Usually, the filter size is printed along the edge of the filter’s frame. Note that the size listed in bold on the frame of the filter is the filter’s nominal size, which likely differs from its actual size.

Do furnace filters have to be exact size?

Since air filters are most often sold by their nominal dimensions, it is crucial to learn how to properly measure your air filter. When making your purchase, you should order your filter by its nominal size, rather than its actual size.

What is the standard filter size?

Standard air filter sizes include:

How do I know which furnace filter to buy?

The easiest way to find out what size filter to get for your furnace is to simply remove your current filter and look at its dimensions. These are typically printed along one of the sides of your filter.

What is the standard size air filter for House?

For example: 16x20x1, 20x20x1, 16x25x1, 20x20x1 are all standard sized air filters. Every unit has a specific sized filter which allows the it to perform correctly and efficiently. Most AC and HVAC units use standard sized filters, but some do require a custom size air filter to be purchased and installed.

Can I use any filter for my furnace?

But you can’t just pick any furnace filter off the shelf. In order to effectively protect your system, (whether it’s a furnace or air handler) while improving indoor air quality, a filter needs to be properly sized, installed, and rated.

How do I know what furnace filter to buy?

Is it OK to use a slightly smaller furnace filter?

If the filter is too small, it won’t cover the entire space and may allow dust and dirt to flow past. If you’re not sure what size filter you need, check the manufacturer’s specifications or ask your HVAC technician for help choosing the right product.

Can I use a slightly smaller furnace filter?

For most systems you can use a standard sized filter within 5/8-in smaller than the air filter housing. If you are not able to find a standard sized filter within that parameter, you will need to order a custom sized air filter.

What is the standard size air filter for house?

Can I use a 1-inch furnace filter instead of 5?

If your system only fits a 1-inch or 2-inch filter, a high MERV rating could be detrimental. A 1-inch filter with less surface space will get clogged fairly quickly and need to be replaced much sooner than a thicker filter.

Can I use a 1-inch furnace filter instead of a 4 inch?

While a 4-inch-thick filter is more efficient than a 1-inch filter, the right size depends on your furnace. If you measure the filter slot, and it’s large enough to accommodate the thicker filter, then you can use it. However, if the slot is less than 4 inches wide, you’re stuck with using that thickness.

What happens if I put the wrong size filter in my furnace?

The biggest concern when you use the wrong size air filter is that it may not effectively prevent dust from building up on your HVAC system’s motors and blowers. This dirties up your furnace which could affect its performance or possibly harm the system’s internal components, leading to costly repairs or replacements.