When should I replace my 5 inch furnace filter?

How long does a 5 inch filter last?

A good rule of thumb is to change 1-2 inch filters every three months, 4 inch filters every six months and 5 inch filters every 12 months. Signs your air filter needs changed: The filter is visibly dirty.

Is a 5 inch filter worth it?

5-inch air filters are more expensive up-front. However, they can provide you a better service in terms of air quality, longer life, and energy cost savings. That means it’s more cost-effective than smaller filters.

Can I use a 4 inch filter instead of 5?

Going down in thickness by an inch shouldn’t be a big deal – for example, you should be able to use a 4-inch filter instead of a 5-inch filter. … Higher MERV ratings work best when the filter is 4” thick or thicker because they trap extremely small particles, which means contaminants will build up quickly on the screen.

Should furnace filter be changed summer?

The same HVAC system that moves air throughout your home during the winter, will be moving the air throughout your home in the summer. … Frequent filter changes will help to increase the lifespan of your entire HVAC system. So, yes, your furnace filter needs to be changed even in the summer.

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How often should filters be changed?

Here are averages that may help you know how regularly you should get a new air filter at your residence: Vacation house or one occupant and no pets or allergies: every 6–12 months. Ordinary suburban home without pets: every 90 days. One dog or cat: every 60 days.

What happens when you don’t change furnace filter?

Short Cycling

If the air filter is not serviced often enough, it will eventually become clogged to the point that air cannot pass through it. When the furnace is operating, the lack of air flow will trap the heat in the system. … Without a new air filter, the furnace will overheat every time it starts up again.

Is a 5 inch furnace filter better?

Most air filters are 1 inch thick, but some systems can accommodate filters 2 to 5 inches thick. In our tests, we found that the thicker the filter, the better it works and the longer the replacement intervals. That means it’s better for you and for your heating, ventilating, and air conditioning (HVAC) system.

What happens if your furnace filter is too big?

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.

Does furnace filter size matter?

Does Size Matter? You’ve guessed it! The answer is yes. It is essential to use the right size air filter for your HVAC unit to keep your system running smoothly and to reap all the benefits your air filter has to offer.

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