---
product_id: 720313620
title: "Falsken FTHT-20RF Heater Treater 20 Replacement Cartridge"
price: "$205.90"
currency: USD
in_stock: true
url: https://www.desertcart.us/products/720313620-falsken-ftht-20rf-heater-treater-20-replacement-cartridge
store_origin: US
region: United States of America
---

# Falsken FTHT-20RF Heater Treater 20 Replacement Cartridge

**Price:** $205.90
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Falsken FTHT-20RF Heater Treater 20 Replacement Cartridge
- **How much does it cost?** $205.90 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/720313620-falsken-ftht-20rf-heater-treater-20-replacement-cartridge)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

Falsken FTHT-20RF Heater Treater 20 Replacement Cartridge

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Falsken Water Systems |
| Part Number | FTHT-20RF |
| Item Weight | 1 pounds |
| Product Dimensions | 2.5 x 2.5 x 20 inches |
| Item model number | FtHT-20RF |
| Is Discontinued By Manufacturer | No |
| Size | 1 Count (Pack of 1) |
| Color | White |
| Item Package Quantity | 1 |
| Included Components | O-Ring, Lubricant and Filter Replacement Instructions Included |
| Batteries Included? | No |
| Batteries Required? | No |

## Images

![Falsken FTHT-20RF Heater Treater 20 Replacement Cartridge - Image 1](https://m.media-amazon.com/images/I/71YbUH6gb1L.jpg)

## Questions & Answers

**Q: Is this compatible with falsken S/N 33328**
A: If it’s 2.5”x20” it is

**Q: Are filter replacement instructions available online?**
A: Replacement instructions are included with the replacement filter...

**Q: Are replacement o rings included?**
A: Yes we include a replacement o-ring, lubricant and instructions with each replacement filter.

**Q: I have a falsken heater treater, cartridge number not checked - the housing is 20 inches long. s/n 28420. is the ftht-20rf the correct cartridge?**
A: Yes...that will be the correct replacement cartridge.

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**Shop now:** [https://www.desertcart.us/products/720313620-falsken-ftht-20rf-heater-treater-20-replacement-cartridge](https://www.desertcart.us/products/720313620-falsken-ftht-20rf-heater-treater-20-replacement-cartridge)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-19*