Which way does the filter go in a central air unit?

The arrow on your filter should always face the unit and away from the return air duct that carries the air that will be heated or cooled. HVAC systems push the cool or warm air out and pull spent air in, recirculating the air throughout your home.

What happens if you put home air filter in backwards?

By installing your filter backwards, air will have a harder time flowing through the filter and your air handler will have to work harder to make up for the loss of airflow. This could lead to higher utility bills and possibly damage your furnace or air conditioner.

Can I change my HVAC filter myself?

The filter of the unit, especially if it’s an HVAC unit that will tend to get nearly year-round use, should be changed by the homeowner at least every three months, but possibly more often. Check your filter’s condition and change it once a month if: You run your unit six months a year to year-round.

Why does my central air have two filters?

Scenario 1: Your HVAC system has multiple return ducts. This is the most common reason why your central air system has two air filters. Having multiple return vents solves this problem, but it also requires air filters at each vent to properly filter the air and prevent particulates from getting into your fan motor.

Can a dirty air filter cause AC not to cool?

A dirty air filter restricts the flow of cold air, causing it to build up inside the air conditioner and lower the internal temperature. Uneven Cooling: Even if it’s not enough to cause freezing, that restricted airflow isn’t good for your air conditioner’s cooling power.

Can I put a filter on a return vent?

Do not put filters in your supply vents. Your AC system should have a proper fitting filter on the return side. By placing a good fitting, high quality filter on the return vent, you will remove particles from the air before they can enter the AC system. Filters for supply vents are a bad idea.

How often should the HVAC filter be changed?

For basic 1″–3″ air filters, manufacturers typically tell you to replace them every 30–60 days. If you suffer from light to moderate allergies, you could install a better air filter or replace them even more regularly.

How much does it cost to change HVAC filter?

Reduced air flow signifies a dirty air filter. This type of repair costs an average of $50 for a house call fee plus the cost of the air filter. Air filters range in price from $25 to over $100, depending on the MERV (minimum efficiency reported value) of the filter and whether or not it is HEPA-rated.

Can you run Central AC without filter?

Can Your AC Run without a Filter? Even though your air conditioning system will work without a filter, experts recommend against it because it can cause severe damage to your AC system and then you’ll need to pay for expensive repairs.