Quick Answer: Does air filter size make a difference?

The air quality detector at the air inlet of the air purifier finds that the air quality is poor and the red light is on, prompting the user that the current air temperature is relatively poor. This is normal, just wait for the air purifier to purify the air in the room and slowly return to orange or green.

Is a bigger or smaller air filter better?

Not typically. The best air filter is the one that fits your HVAC unit correctly. You won’t benefit from a larger air filter if it doesn’t even fit into the wall. Make sure you measure your air filter to find the one that fits best.

Do air 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.

Is it OK to use a smaller air filter?

An improperly sized air filter doesn’t do its job. When it’s too small, it lets dust, mold, and other contaminants into your air vents. These then spew into your air, providing air quality problems.

IMPORTANT:  How many miles will an oil filter last?

Can you have too big of an air filter?

Air Filter Problems with Poor Fit

If you purchase a filter that’s too large, it won’t slide into the slot correctly. If the filter is too small, it won’t cover the entire space and may allow dust and dirt to flow past.

What size air filter should I buy?

Actual Size: The actual size of an air filter is typically written in the fine print on the frame of the filter and is usually 0.25″-0.5″ smaller than the advertised, nominal size. The actual size is what you’d find if you used a ruler to measure the exact dimensions of the filter.

How do I know what size air filter to buy?

Follow these 3 easy steps to measure your HVAC filter size:

  1. Step 1 – Measuring Length and Width (L x W). (If your filter is not a square, the smallest measurement goes first).
  2. Step 2 – Measure the thickness (Depth) of your filter from front to back.
  3. Step 3 – Put Your measurements together (L x W x D).