Heat Pump Air Filters

Our long-lasting heat pump filters, proudly made in the USA, are designed to capture dust and allergens while keeping your HVAC system efficient. Durable and reliable, these high-quality heat pump filters ensure cleaner air and better performance for your home.

Available Heat Pump Filter Sizes

How to Choose the Right Heat Pump Air Filter Size

 

Selecting the correct filter size is crucial for HVAC efficiency and indoor air quality. Follow these three simple steps to ensure a perfect fit:

  • Check the Existing Filter – Look at the dimensions printed on your current filter. Common sizes include 12x12x1, 16x25x1, and 20x20x1, but your system may require a custom size.
  • Measure Your Filter Manually – Use a tape measure to record length (L), width (W), and thickness (T) in inches. Round up to the nearest whole number for standard sizing.
  • Refer to Your HVAC Manual – If your current filter is missing, your system’s manual should list compatible filter sizes. You can also check with your manufacturer or HVAC technician for recommendations.

Pro Tip: Always replace your heat pump air filter with the correct size to prevent airflow restrictions and maintain energy efficiency.

Heat Pump Air Filter Sizes and Custom Options

 

Heat pump air filters come in a variety of sizes, including 0.5-inch, 1-inch, 2-inch, and 4-inch filters, to fit different HVAC systems. If your system requires a unique size, custom heat pump air filters are also available to ensure proper airflow and efficiency.

Common Filter Sizes:

  • Standard Sizes: 1-inch, 2-inch, 4-inch filters
  • Custom Filters: Whole-house or specialized filter options
  • How to Find Your Filter Size: Check your current filter’s length, width, and depth, or refer to your HVAC system manual.

Need a custom air filter? Contact us to find the perfect fit!

Frequently Asked Questions About Heat Pump Filters

How Often Should Heat Pump Filters Be Changed?

The replacement schedule for heat pump filters depends on the filter type and usage. Fiberglass filters should be cleaned or replaced every 30–60 days, while pleated filters should be replaced at least every six months. Professionals recommend changing filters every 90–120 days for optimal air quality and HVAC efficiency. Homes with pets, smokers, or allergy sufferers should replace filters more frequently to maintain clean indoor air.

Where Are The Filters Located On A Heat Pump?

The heat pump filter is typically installed on the air return side of the unit. Depending on the HVAC setup, it can be found in different locations. In vertical units, often located in closets or crawl spaces, the filter is usually behind a grille on the bottom or front of the unit. In other systems, it may be placed in wall, floor, or ceiling vents near the thermostat. If unsure, checking the HVAC manual or consulting a professional is recommended.

What Filter Should I Use With A Heat Pump?

For optimal efficiency and air quality, a 4-inch MERV 11-13 media filter is recommended. These filters capture fine particles like dust, pollen, and mold spores while maintaining strong airflow with minimal resistance. They also help extend HVAC lifespan by reducing strain on the system. Wonderfil’s MERV 8 filters are a reliable and affordable option for residential use. See what our customers are saying about their performance.

Is MERV 14 Too High For Residential Use?

MERV 14 filters can be too restrictive for most home HVAC systems, potentially reducing airflow and causing the system to work harder. This can lead to increased energy consumption, a shorter HVAC lifespan, and poorer indoor air quality if circulation is compromised. For a balanced approach, MERV 8-13 filters provide effective filtration without overburdening the system.