---
product_id: 132523074
title: "Filterbuy 20x25x5 Air Filter MERV 11 Pet & Allergy Defense (4-Pack) | Pleated HVAC AC Furnace Replacement for Honeywell FC100A1037, Lennox X6673 & More (Actual Size: 19.88 x 24.75 x 4.38)"
brand: "filterbuy"
price: "$1061.44"
currency: USD
in_stock: true
category: "Filterbuy"
url: https://www.desertcart.us/products/132523074-filterbuy-20x25x5-air-filter-merv-11-pet-and-allergy-defense
store_origin: US
region: United States of America
---

# 3x longer lifespan vs fiberglass Recyclable durable beverage board frame MERV 11 allergen & pet defense Filterbuy 20x25x5 Air Filter MERV 11 Pet & Allergy Defense (4-Pack) | Pleated HVAC AC Furnace Replacement for Honeywell FC100A1037, Lennox X6673 & More (Actual Size: 19.88 x 24.75 x 4.38)

**Brand:** filterbuy
**Price:** $1061.44
**Availability:** ✅ In Stock

## Summary

> 🛠️ Upgrade your air game — because your home deserves premium defense!

## Quick Answers

- **What is this?** Filterbuy 20x25x5 Air Filter MERV 11 Pet & Allergy Defense (4-Pack) | Pleated HVAC AC Furnace Replacement for Honeywell FC100A1037, Lennox X6673 & More (Actual Size: 19.88 x 24.75 x 4.38) by filterbuy
- **How much does it cost?** $1061.44 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/132523074-filterbuy-20x25x5-air-filter-merv-11-pet-and-allergy-defense)

## Best For

- filterbuy enthusiasts

## Why This Product

- Trusted filterbuy brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Healthy Home, Happy You:** Optimized filtration supports allergy relief & pet dander defense for your sanctuary
- • **Breathe Elite, Live Elevated:** MERV 11 synthetic media captures 95% of dust & allergens without airflow sacrifice
- • **Effortless Whole-Home Upgrade:** Fits major HVAC brands like Honeywell, Lennox & Carrier for seamless replacement
- • **Triple the Life, Triple the Value:** Electrostatically charged pleated filters last 3x longer than standard fiberglass
- • **Built to Last, Designed to Perform:** Durable dual wire-backed recyclable frames resist warping & extreme temps

## Overview

Filterbuy’s 20x25x5 MERV 11 air filters deliver superior allergen and pet dander protection with 95% dust capture efficiency. Featuring electrostatically charged pleated media and durable recyclable frames, these filters last 3x longer than fiberglass alternatives. Compatible with leading HVAC brands, they ensure easy installation and enhanced system performance for healthier indoor air.

## Description

Buy Filterbuy 20x25x5 Air Filter MERV 11 Superior Pet & Allergy Defense (4-Pack), Pleated HVAC AC Furnace Filters for Honeywell FC100A1037, Lennox X6673, and More (Actual Size: 19.88 x 24.75 x 4.38): Filters - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

## Features

- WHOLE HOUSE REPLACEMENT: 20x25x5 air filters for your furnace, air conditioner, or heat pump enhance HVAC system efficiency and support a healthy lifestyle (actual size: 19.88" x 24.75" x 4.38")
- MERV 11 PERFORMANCE: Protect your home or business from allergens, pets, and more with MERV 11 synthetic media (comparable with MPR 1200 & FPR 7) that captures 95% of dust without restricting air flow
- LONG-LASTING FILTRATION: Electrostatically charged media (made in the USA) with 8 pleats per foot traps more microscopic particles and lasts 3x longer than fiberglass models (replace every 180 days for optimal performance)
- SUPERIOR CONSTRUCTION: Easy installation beverage board (recyclable) frames with dual wire backing outperform flimsy cardboard designs by improving durability, preventing warping, and resisting extreme temperatures
- COMPATIBLE MODELS: Honeywell / Air Demon Filter Part Numbers F25 (#203720), F35 / F35R (#FC35A1027), F100 / F150 (#FC100A1037), F200 (#FC200E1037), Bryant (FILBBCAR0020, FILXXCAR0020, FILXXCAR0120), Carrier (CARF8250602, CARFC100A1037, CARL86469, EXPXXFIL0020, EXPXXLMC0020, EXPXXUNV0020, FILCCCAR0020, FILXXCAR-0020, FILXXCAR0120), Day & Night (MACPAK20), Lennox (X8790, X0586, X5426, X6661, X6673, X7751, BMAC-20C, HCC20-28, HCF20-10, HCF20-16), Payne (MACPAK20)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07S4HBFTN |
| Air Filter Construction | Pleated |
| Brand | Filterbuy |
| Brand Name | Filterbuy |
| Common Applications | Allergen Reduction, High Strength |
| Compatible Devices | Air Cleaner, Air Conditioner, Furnace, HVAC System, Heat Pump |
| Compatible Hvac Systems | Commercial, Industrial, Residential |
| Customer Reviews | 4.6 out of 5 stars 3,129 Reviews |
| EU Spare Part Availability Duration | 90 Days |
| Filter Airflow Direction | Variable |
| Filter Mounting Type | Slide In |
| Filter Shape | Rectangular |
| Included Components | Air Filters |
| Item Dimensions L x W x Thickness | 24.75"L x 19.88"W x 4.38"Th |
| Item Type Name | Air Filter |
| Item Weight | 15 Pounds |
| MERV Rating | 11 |
| Manufacturer | Filterbuy |
| Manufacturer Part Number | HRF20x25x5M11=CARpk4 |
| Material | Aluminum, Plastic, Polypropylene |
| Material Type | Aluminum, Plastic, Polypropylene |
| Max Temperature | 200 Degrees Fahrenheit |
| Max Velocity | 615 Cubic Feet Per Minute |
| Model Number | HRF20x25x5M11=CARpk4 |
| Number of Items | 1 |
| Product Dimensions | 24.75"L x 19.88"W x 4.38"Th |
| Product Grade | Replacement Parts |
| UPC | 717267215602 |
| Unit Count | 4.0 Count |
| Warranty Description | Defective items and products that were shipped incorrectly are subject to a refund or replacement on a case by case basis. Please contact our customer support team for more information if you experience any issues. |

## Product Details

- **Brand:** Filterbuy
- **Material:** Aluminum, Plastic, Polypropylene
- **Product Dimensions:** 24.75"L x 19.88"W x 4.38"Th
- **MERV Rating:** 11
- **Compatible Devices:** Air Cleaner, Air Conditioner, Furnace, HVAC System, Heat Pump
- **EU Spare Part Availability Duration:** 90 Days
- **Item Weight:** 15 Pounds
- **Max Temperature:** 200 Degrees Fahrenheit
- **UPC:** 717267215602
- **Air Filter Construction:** Pleated

## Images

![Filterbuy 20x25x5 Air Filter MERV 11 Pet & Allergy Defense (4-Pack) | Pleated HVAC AC Furnace Replacement for Honeywell FC100A1037, Lennox X6673 & More (Actual Size: 19.88 x 24.75 x 4.38) - Image 1](https://m.media-amazon.com/images/I/81vIbOiWU3L.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: Why should I change my air filter?**
A: To maintain a healthy lifestyle, as breathing dirty air can put you at risk to develop asthma, allergies, and other respiratory ailments. Plus, old filters can cause system defects which may lead to unwanted expenses via energy costs and repairs.

**Q: When should I change my air filter?**
A: We generally recommend replacing your filter every 90 days to keep your system running efficiently and air clean. But this is subject to change based on filter size and variable factors for pet owners, allergy sufferers, homes with children, etc.

**Q: Will these air filters fit my system?**
A: Most of our filters are universally compatible and will work with any furnace, air conditioner, heat pump, or HVAC system as long as you choose the proper size. But if you see a specific brand name on a listing, make sure it matches your unit model.

**Q: How many air filters do I need?**
A: This varies for every customer depending on specific needs such as the number of vents in your home. However, our selection includes package quantities that range from 1 to 12 filters, so no matter what your situation may be, we've got you covered.

**Q: How do I change my air filter?**
A: After finding the right size, turn off the power supply and remove the cover from your intake vent before taking out the old filter. Then just insert your new filter to match the direction of air flow, replace the cover, and turn the power back on.

## Frequently Bought Together

- Filterbuy 20x25x5 Air Filter MERV 11 Allergen Defense (4-Pack), Pleated HVAC AC Furnace Air Filters for Honeywell FC100A1037, Lennox X6673, Carrier,& More (Actual Size: 19.88 x 24.75 x 4.38 Inches)
- Filterbuy 16x25x5 Air Filter MERV 11 Allergen Defense (4-Pack), Pleated HVAC AC Furnace Air Filters for Honeywell FC100A1029, Lennox X6670, Carrier, & More (Actual Size: 15.75 x 24.75 x 4.38 Inches)
- Filterbuy 16x25x5 Air Filter MERV 8 Dust Defense (4-Pack), Pleated HVAC AC Furnace Air Filters for Honeywell FC100A1029, Lennox X6670, Carrier, & More (Actual Size: 15.75 x 24.75 x 4.38 Inches)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-08-13*