Question: What Type Of Filter Is Best For A Furnace?

How often should I change my furnace filter?

every 90 daysThe general rule is to change a furnace filter—usually located behind a return-air vent or in a slot on the furnace itself—at least once every 90 days.

Depending on your lifestyle and the type of furnace filter you choose, you may want to swap it out more often..

Can I use a thicker furnace filter?

Furnace filters can range anywhere from 1″to 5″ in thickness. In general, the thicker the furnace filter is the more efficiently your unit work and the longer it will last.

Is a 4 inch furnace filter better than a 1 inch?

You’ll change 4-inch filters a lot less than 1-inch filters. … That means they have more surface area to catch particles, making them last 3–5 times longer than 1-inch filters. Most HVAC technicians recommend changing 1-inch air filters every 30 days, while 4-inch filters can be changed every 3–6 months.

How do I know what filter my furnace needs?

Furnace filters are sized by width, length and thickness. The size on the filter is usually expressed in inches (example: 16″x20″x1″). A filter that is the wrong size will typically not fit, or may not stay in place, once installed. The owner’s manual for your furnace should tell you what size you need.

What MERV rating can my furnace handle?

The ideal MERV filters for both air filtering and furnace efficiency are 7-13, experts say. These filters can be used without any modifications to your equipment. Your system may handle MERV 14-16 with no discernable stress. However, many residential systems require modifications to pull air through these filters.

Is a 2 inch filter better than a 1 inch?

When it comes to a 1 inch vs 2 inch furnace filter you could use a 2 inch filter if your vent is deep enough and a 2 inch filter will generally last longer since it has more media.

Can I cut a furnace filter to fit?

Bending or cutting the filter also decreases its structural integrity. The whole filter can collapse while installed, creating not just a performance issue and a potentially costly repair, but also possibly creating unsafe conditions.

What happens if you put furnace filter in backwards?

When a furnace filter is placed backwards, the fibers can’t do their job properly. This means your furnace has to work harder to generate the same air flow, resulting in increased energy costs. Particles are also allowed to build up irregularly, making the furnace working even harder to draw air.

Does furnace filter brand matter?

If you want a more efficient filter, that will trap the smallest of particles, you will want to choose a filter with a higher MERV rating. Overall, brand is not important. What is important, is the filter rating. For example, replacement Honeywell furnace filters can be purchased through various filter manufacturers.

Do expensive furnace filters make a difference?

More expensive (electrostatic) furnace filters capture smaller particles and need less changing than cheaper (pleated) and the cheapest (woven fiberglass) filters. If you have allergies, consider electrostatic filters.

Which air filter is designed just to protect the furnace?

Fiberglass air filtersFiberglass air filters are constructed from a fiberglass material and have a thin, flat surface. They are designed to protect your HVAC system, not to improve the air quality in your home. These filters remove less than 10% pollutants in the air and get a MERV rating between 1 and 4.

Is it better to use cheap furnace filters?

Cheap fiberglass filters are designed to stop dust, debris and hair from gunking up the system. While they do little to filter out allergens and other irritants, using them keeps your HVAC system clean and efficient. … They can add more resistance to airflow, which makes the system more expensive to operate.

Are pleated furnace filters better?

Pleated filters can be highly efficient and durable. They usually span MERV ratings of 5-12 and have a much-extended lifespan compared to their counterparts. Pleated filters are also exceptionally good as indoor air quality solution for allergy sufferers.

What type of filter should I use in my furnace?

Higher rated filters allow less air to flow through though and can force your furnace to work harder and possibly malfunction. A MERV rating between eight and 11 is adequate for most homes. To be safe, you should check if your furnace manufacturer has a maximum MERV rating your model of furnace can use.

Should I buy expensive furnace filters?

Yes, in general, the more expensive air filters are more effective, but a single person with no pets and allergies might not need as much filtration as a family of five with three pets and a child with asthma. Also consider how long your air filter will last.