PuroAir MegaFilter 20x25x1 MERV 13 + Activated Carbon | 4-Pack Heavy-Duty HVAC Filter

Meet the PuroAir MegaFilter, a 20x25x1 HVAC filter engineered to support cleaner, fresher indoor air. This 4-pack blends rugged construction with advanced multi-layer filtration to meet everyday home needs without compromising airflow. Designed for compatibility with most air conditioners and furnaces, it offers an easy path to a noticeable upgrade in air quality.

Three-layer filtration for a broader clean

The MegaFilter relies on a three-layer build that works together to capture a wide range of particles and odors. A prefilter confronts larger debris, a MERV 13 filter tackles smaller particulates, and the CarbonTech activated carbon traps odor compounds, helping air feel crisper and more comfortable as you go about your day.

• Three-layer design: prefilter, MERV 13, and activated carbon for multi-stage filtration
• CarbonTech layer helps reduce odors from cooking and smoke for a fresher space

What you may notice in everyday use

In homes with pets or during peak pollen seasons, occupants often perceive less dust and a more pleasant scent profile. The filter is built for heavy-duty performance while aiming to preserve steady airflow through typical HVAC systems.

• 4x stronger filtration than lower-grade options for 1–3 micron particles, based on lab testing context
• 3x longer life than traditional fiberglass filters, delivering lasting value

Fit, install, and compatibility

Designed for a near-perfect fit within 20x25x1 housings, the MegaFilter actually measures 19.75" x 24.75" x 0.75". In many setups, installation is quick—about 30 seconds—making routine replacement straightforward in compatible furnaces and air conditioners.

Getting help and what’s in the box

If you have questions about fit or installation, our team in Arizona is ready to assist. Each pack contains four high-performance filters to cover multiple filter cycles and keep your space feeling fresh.