---
product_id: 63670324
title: "No Toil, Castle One-Year HVAC Furnace Filter, 20\" x 36\" x 1\""
brand: "no-toil"
price: "447 kr"
currency: DKK
in_stock: true
url: https://www.desertcart.dk/products/63670324-no-toil-castle-one-year-hvac-furnace-filter-20-x
store_origin: DK
region: Denmark
---

# 1-year lifespan - 4-12x longer 400% more surface area for airflow MERV 8 - 93% dust removal No Toil, Castle One-Year HVAC Furnace Filter, 20" x 36" x 1"

**Brand:** no-toil
**Price:** 447 kr
**Availability:** ✅ In Stock

## Summary

> 🛠️ Upgrade your air game: Filter smarter, breathe better, last longer!

## Quick Answers

- **What is this?** No Toil, Castle One-Year HVAC Furnace Filter, 20" x 36" x 1" by no-toil
- **How much does it cost?** 447 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/63670324-no-toil-castle-one-year-hvac-furnace-filter-20-x)

## Best For

- no-toil enthusiasts

## Why This Product

- Trusted no-toil brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Proudly Made in USA:** Backed by US patent #10,183,249 B2 for trusted innovation
- • **Unmatched Longevity:** Lasts up to 1 year, replacing 20 standard pleated filters
- • **Energy & Eco-Friendly:** Reduces energy use and landfill waste by cutting filter replacements drastically
- • **Patented Triple-Layer Foam:** 3 layers of open-celled foam with a tacky center trap dust like flypaper
- • **Superior Airflow Efficiency:** High-flow MERV 8 rating ensures max air circulation with 93% particle capture

## Overview

The No Toil Castle One-Year HVAC Furnace Filter features patented triple-layer open-celled foam with a tacky center layer that captures 93% of harmful dust particles. With 400% more surface area than standard filters, it lasts up to one year—20 times longer than typical pleated filters—saving energy and reducing waste. Proudly made in the USA under patent #10,183,249 B2, it offers superior protection for your home and HVAC system while maintaining maximum airflow.

## Description

The Castle air filter is a new innovative HVAC filter that will last up to a year. This new filter will collect as much dust as 20 regular pleated filters. High air-flow with an open-cell, triple-layer core with a tacky media for collecting dust removes 93% of the most harmful airborne particles in your home (>5 microns). Treat yourself and your HVAC system to longer lasting filtration.

## Features

- Patented Filter Technology: Castle Filters use 3 layers of ¼-inch open-celled foam, with a patented tacky center layer that catches dust like fly paper. Proudly made in USA - US patent #10,183,249 B2
- MERV 8: The High-Flow MERV 8 air filter effectively removes 93% of the most harmful dust particles and offers superior protection of your equipment and home while still allowing maximum air-flow
- HVAC Filter: Castle Filters have 400% more surface area for dust and other particles to collect. The internal foam is treated with a sticky material to collect more dust while letting the air pass through
- Lasts One Year: The furnace filter holds up to 20 times more dust than a pleated filter. While pleated filters need to be replaced about once a month, the Castle Air Filter lasts one year which is 4-12x longer than the others
- Save Energy and Lower Land Fill Contribution: Castle Air Filter helps you save energy with its advanced filtration technology and also helps in generating less waste as it need not be changed every month like a standard filter

## Product Details

- **Brand:** No-Toil
- **Material:** Paper
- **Product Dimensions:** 36"L x 20"W x 1"Th
- **MERV Rating:** 8
- **Compatible Devices:** Furnace
- **Item Weight:** 0.97 Pounds
- **Global Trade Identification Number:** 00852020006117
- **UPC:** 852020006117
- **Number of Items:** 1
- **Manufacturer:** No Toil

## Images

![No Toil, Castle One-Year HVAC Furnace Filter, 20" x 36" x 1" - Image 1](https://m.media-amazon.com/images/I/81iMkRP9TvL.jpg)
![No Toil, Castle One-Year HVAC Furnace Filter, 20" x 36" x 1" - Image 2](https://m.media-amazon.com/images/I/712cRRqnQsL.jpg)
![No Toil, Castle One-Year HVAC Furnace Filter, 20" x 36" x 1" - Image 3](https://m.media-amazon.com/images/I/71+rRJ9Xt1L.jpg)
![No Toil, Castle One-Year HVAC Furnace Filter, 20" x 36" x 1" - Image 4](https://m.media-amazon.com/images/I/81Bir4SPUjL.jpg)

## Available Options

This product comes in different **Pattern Name, Style** options.

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**Shop now:** [https://www.desertcart.dk/products/63670324-no-toil-castle-one-year-hvac-furnace-filter-20-x](https://www.desertcart.dk/products/63670324-no-toil-castle-one-year-hvac-furnace-filter-20-x)

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-02-26*