---
product_id: 616888842
title: "45i Replacement Filter Compatible with Alen BreatheSmart Flex Bh400 & 45i Air Purifier, 3-in-1 45i HEPA Filter+ Activated Carbon Pre Filter, B4-Pure/ Fl40, 2 Hepa+4 Carbon Filter"
brand: "isinlive"
price: "€ 62.75"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.ie/products/616888842-45i-replacement-filter-compatible-with-alen-breathesmart-flex-bh400-45i
store_origin: IE
region: Ireland
---

# low energy consumption tech 3-in-1 triple filtration 99.97% particle capture 45i Replacement Filter Compatible with Alen BreatheSmart Flex Bh400 & 45i Air Purifier, 3-in-1 45i HEPA Filter+ Activated Carbon Pre Filter, B4-Pure/ Fl40, 2 Hepa+4 Carbon Filter

**Brand:** isinlive
**Price:** € 62.75
**Availability:** ✅ In Stock

## Summary

> 🌬️ Breathe smarter, live fresher — don’t let stale air hold you back!

## Quick Answers

- **What is this?** 45i Replacement Filter Compatible with Alen BreatheSmart Flex Bh400 & 45i Air Purifier, 3-in-1 45i HEPA Filter+ Activated Carbon Pre Filter, B4-Pure/ Fl40, 2 Hepa+4 Carbon Filter by isinlive
- **How much does it cost?** € 62.75 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/616888842-45i-replacement-filter-compatible-with-alen-breathesmart-flex-bh400-45i)

## 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 structure reduces energy use while maximizing filtration performance.
- • **Value-Packed Filter Set:** Includes 2 HEPA and 4 activated carbon filters—enough to keep your air fresh for up to 16 months.
- • **Triple-Stage Purification Power:** Fine Nylon + HEPA + Activated Carbon filters work in harmony to eliminate pollen, pet dander, odors, and smoke.
- • **Ultra-Efficient Particle Capture:** Captures 99.97% of airborne particles down to 0.3 microns for cleaner, healthier air.
- • **Seamless Compatibility & Easy Reset:** Specifically designed for Alen BreatheSmart 45i & Flex models with simple filter reset for hassle-free maintenance.

## Overview

The 45i Replacement Filter by isinlive is a premium, compatible 3-in-1 filtration system designed for Alen BreatheSmart 45i and Flex air purifiers. Featuring a fine nylon pre-filter, HEPA filter, and activated carbon layer, it captures 99.97% of particles as small as 0.3 microns and neutralizes odors from pets, cooking, and smoke. Engineered with energy-efficient technology and supplied as a cost-effective 6-filter pack, it ensures long-lasting, high-performance air purification with easy installation and reset.

## Description

Full description not available

## Features

- 【COMPATIBLE MODELS】The premium 45i Pure replacement filter is specfically compatible with Alen 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 Alen BreatheSmart 45i air purifier features 3-stage filtration system: ①Fine Nylon Preliminary Filter ②HEPA 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 HEPA air filters for Alen BreatheSmart air purifier can attach 99.97% of airborne particles down to 0.3 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 Hepa Filters+4 X Actived Carbon Flex & 45i replacement filters. 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
- 【MAINTENANCE TIP】After installing a new 45i replacement filter, press the FILTER button for 5 seconds to reset your air purifier. The indicator will switch from red to green. For any setup or usage issues, you can reach us for prompt support.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand Name | isinlive |
| Model Info | Flex/45i Pure Replacement Filter |
| Item Weight | 3.69 pounds |
| Product Dimensions | 14.5 x 10.98 x 2 inches |
| Item model number | Flex/45i Pure Replacement Filter |
| Part Number | LYH0008-AHJ-2 |
| Color | 45I-2 |
| Compatible Device | Air Purifier |
| Included Components | 2 Hepa Filters, 4 Activated Carbon Filters |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Brand:** isinlive
- **Product Dimensions:** 14.5"L x 10.98"W x 2"Th
- **Compatible Devices:** Air Purifier
- **Air Filter Construction:** Pleated
- **Number of Items:** 6
- **Manufacturer:** isinlive
- **Product Grade:** high
- **Unit Count:** 2.0 Count
- **Common Applications:** Appliances

## Images

![45i Replacement Filter Compatible with Alen BreatheSmart Flex Bh400 & 45i Air Purifier, 3-in-1 45i HEPA Filter+ Activated Carbon Pre Filter, B4-Pure/ Fl40, 2 Hepa+4 Carbon Filter - Image 1](https://m.media-amazon.com/images/I/71-VGiYl-tL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works great
*by D***K on June 17, 2025*

His filters were great for a lot less than the brand name. Good quality.

### ⭐⭐⭐⭐⭐ Great value
*by S***. on April 22, 2025*

The price, quality, and delivery time were all excellent!

### ⭐⭐⭐⭐⭐ Quality and Contents
*by S***A on March 4, 2025*

Seems to work well... The carbon filter is on the side facing the back of the unit. On the front side, there is the normal thin black fabric material that acts as a lint, hair, and dust first stage filter. It came with two (2) extra first stage filters. Greatly appreciated. I did not notice any reduction in air flow due to the carbon filter. The fit was perfect, no binding or loose fitting. Worth the price I believe. Good luck.

## 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 Ireland*
*Store origin: IE*
*Last updated: 2026-02-17*