---
product_id: 706082360
title: "45i Replacement Filter Compatible with BreatheSmart 45i and Flex Air Purifier, 3-in-1 H13 True HEPA+ High-Efficiency Activated Carbon Filter+ Pre Filter, B4-Pure, 2 X True Hepa+4 X Carbon Filter"
brand: "isinlive"
price: "A$28"
currency: AUD
in_stock: true
reviews_count: 5
url: https://www.desertcart.com.au/products/706082360-45i-replacement-filter-compatible-with-breathesmart-45i-and-flex-air
store_origin: AU
region: Australia
---

# low energy consumption tech 3-in-1 advanced filtration 99.97% particle capture 45i Replacement Filter Compatible with BreatheSmart 45i and Flex Air Purifier, 3-in-1 H13 True HEPA+ High-Efficiency Activated Carbon Filter+ Pre Filter, B4-Pure, 2 X True Hepa+4 X Carbon Filter

**Brand:** isinlive
**Price:** A$28
**Availability:** ✅ In Stock

## Summary

> 🌬️ Elevate your air game—because fresh air is the new luxury!

## Quick Answers

- **What is this?** 45i Replacement Filter Compatible with BreatheSmart 45i and Flex Air Purifier, 3-in-1 H13 True HEPA+ High-Efficiency Activated Carbon Filter+ Pre Filter, B4-Pure, 2 X True Hepa+4 X Carbon Filter by isinlive
- **How much does it cost?** A$28 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/706082360-45i-replacement-filter-compatible-with-breathesmart-45i-and-flex-air)

## Best For

- isinlive enthusiasts

## Why This Product

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

## Key Features

- • **Energy-Smart Design:** Advanced low-density tech reduces energy use while maximizing filtration power
- • **Triple-Stage Purity:** Fine Nylon + H13 True HEPA + Activated Carbon for unmatched air clarity
- • **Odor & VOC Neutralizer:** Activated carbon filter eliminates pet, cooking, and wildfire odors effortlessly
- • **Value-Packed Replacement:** Includes 2 True HEPA + 4 Carbon filters—premium quality without premium price
- • **Ultra-Fine Particle Defense:** Captures 99.97% of particles down to 0.01 microns—breathe elite clean air

## Overview

The 45i Replacement Filter is a premium, compatible upgrade for Alen BreatheSmart 45i and Flex air purifiers featuring a 3-in-1 filtration system (Pre-filter, H13 True HEPA, Activated Carbon). It captures 99.97% of airborne particles as small as 0.01 microns and neutralizes odors from pets, cooking, and wildfire smoke. Designed with energy-efficient technology, this cost-effective pack includes 2 True HEPA and 4 activated carbon filters, recommended for replacement every 6-8 months to maintain optimal air quality.

## Description

1

Review: This 45i replacement cartridge is exactly what I needed for my air purifier. The quality is excellent—it fits perfectly, works just as well as the original, and helps keep the air in my home feeling clean and fresh. What really makes this a great buy is the affordable price without sacrificing performance. It’s a solid option for anyone looking to maintain their purifier without overpaying for name-brand filters. I’ll definitely be purchasing this again when it’s time for the next replacement!
Review: Good price and fast shipping. I had no issues with this product.

## Features

- 【COMPATIBLE MODELS】The premium 45i Pure replacement filter is specfically compatible with A-len BreatheSmart 45i and Flex Air Purifier. Compared to Part # B4-Pure. NOTE: This is not a OEM product. Any use of the brand name or model designation for this product is made solely for purposes of demonstrating compatibility.
- 【3-IN-1 FILTRATION】 Our 45i Pure replacement filter for A-len BreatheSmart 45i air purifier features 3-stage filtration system: ①Fine Nylon Preliminary Filter ②H13 Grade True HEPA Filter ③Activated Carbon Filter. It's specifically customized for pet dander and cooking odor, lint, pollen, smokers, wildfire season, gases, etc.
- 【HIGH PERFORMANCE】These FLEX true HEPA air filters for Alen BreatheSmart air purifier can attach 99.97% of airborne particles down to 0.01 microns such as pollen, pet dander, lint, dust, hair. And the activated carbon filter can attach most unpleasant odors such as pet odors, cooking, vocs, wildfire.
- 【PREMIUM QUALITY】Our Flex air purifier replacement filter is adopt advanced lower energy consumption and lower density structure technology verified by the manufacturer, with higher efficiency and less pressure to ensure maximum performance.
- 【COST-EFFECTIVE 】- Package includes 2 x True Hepa +4 X Actived Carbon Flex & 45i replacement filter. It is recommended to replace your 45i filter every 6-8 months for optimal performance (depending upon your usage and environment). Filter made of FSC-Certified paper

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CRRTK2BQ |
| Batteries Required? | No |
| Batteries included? | No |
| Brand | isinlive |
| Compatible Devices | Air Purifier |
| Customer Reviews | 4.6 4.6 out of 5 stars (93) |
| Date First Available | 12 Jan. 2024 |
| Item Weight | 1.68 kg |
| Material Type | Nylon |
| Model | Flex/45i Pure Replacement Filter |
| Part Number | LYH0008-AHJ-2 |
| Product Dimensions | 36.83 x 27.89 x 5.08 cm; 1.68 kg |

## Product Details

- **Brand:** isinlive
- **Compatible devices:** Air Purifier
- **Manufacturer:** isinlive
- **Material:** Nylon
- **Number of items:** 2
- **Unit count:** 2.0 count

## Images

![45i Replacement Filter Compatible with BreatheSmart 45i and Flex Air Purifier, 3-in-1 H13 True HEPA+ High-Efficiency Activated Carbon Filter+ Pre Filter, B4-Pure, 2 X True Hepa+4 X Carbon Filter - Image 1](https://m.media-amazon.com/images/I/413GrfkNnWL.jpg)
![45i Replacement Filter Compatible with BreatheSmart 45i and Flex Air Purifier, 3-in-1 H13 True HEPA+ High-Efficiency Activated Carbon Filter+ Pre Filter, B4-Pure, 2 X True Hepa+4 X Carbon Filter - Image 2](https://m.media-amazon.com/images/I/41l61qBrAYL.jpg)
![45i Replacement Filter Compatible with BreatheSmart 45i and Flex Air Purifier, 3-in-1 H13 True HEPA+ High-Efficiency Activated Carbon Filter+ Pre Filter, B4-Pure, 2 X True Hepa+4 X Carbon Filter - Image 3](https://m.media-amazon.com/images/I/41ps6eJYVSL.jpg)
![45i Replacement Filter Compatible with BreatheSmart 45i and Flex Air Purifier, 3-in-1 H13 True HEPA+ High-Efficiency Activated Carbon Filter+ Pre Filter, B4-Pure, 2 X True Hepa+4 X Carbon Filter - Image 4](https://m.media-amazon.com/images/I/51IOQqQgAmL.jpg)
![45i Replacement Filter Compatible with BreatheSmart 45i and Flex Air Purifier, 3-in-1 H13 True HEPA+ High-Efficiency Activated Carbon Filter+ Pre Filter, B4-Pure, 2 X True Hepa+4 X Carbon Filter - Image 5](https://m.media-amazon.com/images/I/51KeTJps9-L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by A***C on 30 July 2025*

This 45i replacement cartridge is exactly what I needed for my air purifier. The quality is excellent—it fits perfectly, works just as well as the original, and helps keep the air in my home feeling clean and fresh. What really makes this a great buy is the affordable price without sacrificing performance. It’s a solid option for anyone looking to maintain their purifier without overpaying for name-brand filters. I’ll definitely be purchasing this again when it’s time for the next replacement!

### ⭐⭐⭐⭐⭐ Review
*by J***E on 13 November 2025*

Good price and fast shipping. I had no issues with this product.

### ⭐⭐⭐⭐⭐ Review
*by B***R on 26 October 2025*

They’re a perfect fit for my Allen air purifier for a very good price and come two to a package. Excellent filters.

## Frequently Bought Together

- 45i Replacement Filter Compatible with Alen BreatheSmart Flex and 45i Pure Air Purifier, 3-in-1 H13 True HEPA+ Activated Carbon Pre Filter, B4-Pure, 2 X True Hepa+4 X Carbon Filter
- Alen Air Purifier BreatheSmart 45i HEPA with Pure Filter for Large Rooms up to 1600 Sq. Ft. - Perfect for Bedrooms - Captures Allergens, Dust, & Mold

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-02-25*