Filter Placement: Behind Returns vs. Under Furnace

When it comes to HVAC systems, filter placement might not seem like a big deal, but it can make a significant difference in your system's efficiency and air quality. Let's delve into the debate of placing filters behind returns versus under the furnace.

Filters Behind Returns:

Installing filters behind returns is a common practice. Placing filters here allows for easy access and replacement. These filters catch dust, pollen, and other particles before they enter the system, helping to maintain cleaner indoor air. However, since the filter is positioned farther from the furnace, it might not capture all particles, especially those heavier ones that settle before reaching the filter.

Filters Under Furnace:

Alternatively, some HVAC systems have filters positioned under the furnace. This placement ensures that all air passes through the filter before entering the system, potentially providing better filtration. However, accessing and replacing these filters can be more challenging and may require professional assistance.

So, which is better? Both placements have their pros and cons, but ultimately, the best choice depends on your specific HVAC system and needs. If easy access and replacement are priorities, filters behind returns might be the way to go. On the other hand, if superior filtration is your goal and you're willing to put in a bit more effort for maintenance, filters under the furnace could be the better option.

Remember, regular filter maintenance is key to keeping your HVAC system running smoothly and your indoor air clean. Whether your filters are behind returns or under the furnace, be sure to check and replace them regularly to ensure optimal performance. If you're unsure which placement is right for you or need assistance with filter maintenance, don't hesitate to reach out to us at Familia Mechanical for expert advice and service!