Air Purifiers

You might need these too

Customers Rated Us 4.6/5 Stars!

Customers Rated Us 4.6/5!

Trustpilot
Trustpilot

Shop Affordable Air Purifiers

Our range of affordable air purifiers covers HEPA filter units, dehumidifier and purifier combos, aroma diffusers with built-in humidifiers, and replacement HEPA filters for existing units. Whether you are searching for cheap air purifiers to improve air quality in a bedroom or living room, or a dehumidifier model to manage moisture and reduce humidity, the range includes compact and larger capacity options suited to Australian homes. For broader heating and cooling appliances, explore our heating, cooling and air quality collection, or browse our humidifiers range for dedicated ultrasonic and mist options. Comparing cheap air purifiers by filtration type and coverage area is the most practical starting point, and all orders come with fast delivery and a 12-month warranty.

Air purifiers, dehumidifier combos, and aroma diffusers: understanding the three types

The products in this range serve three distinct purposes worth understanding before choosing. For those also managing indoor comfort year-round, our fans collection covers air circulation options, and heaters are worth exploring for seasonal warmth alongside improved air quality. Standard HEPA air purifiers draw air through filters to capture particles including dust, pollen, and pet dander, making them the most direct option for indoor air quality improvement. Dehumidifier and air purifier combos address both moisture levels and airborne particles in a single unit, suiting rooms where humidity is a recurring concern. Aroma diffusers with a built-in humidifier function add fragrance and gentle moisture to the air rather than filtering it, and suit spaces where ambience is the priority over allergen capture.

HEPA filtration and what to compare when choosing an air purifier

HEPA filtration is the key technology across the dedicated air purifier models in this range. HEPA filters capture very fine particles by drawing air through a dense filter medium, making them effective for reducing airborne dust, pollen, and similar particles in enclosed spaces. For those also managing indoor cleanliness more broadly, our vacuum cleaners and steam cleaners collections are practical complements to a purification setup. Several models feature multi-stage filtration, including four-layer and four-stage HEPA systems that combine a pre-filter for larger debris with the main HEPA layer for finer particles. Replacement HEPA filters are sold as a standalone product in this range, so checking filter availability and compatibility with your chosen model before ordering is a worthwhile step.

Room size, dehumidifier capacity, and where to position your unit

Matching the purifier or dehumidifier to the size of the room is the most important pre-purchase decision. For those also managing indoor heating alongside air quality, our heaters and fireplaces collections cover seasonal comfort options worth exploring at the same time. Small and compact units suit bedrooms and offices, while larger capacity dehumidifier models are better suited to living rooms or high-moisture areas. Dehumidifiers in this range are measured in litres capacity, so checking the stated coverage area on the product listing and comparing it to your room dimensions is the most reliable approach before buying. Position the unit away from walls and curtains to allow air to circulate freely through the intake vents, and avoid corners where airflow tends to be more restricted.

Sleep modes, timers, and features worth checking before you buy

Beyond filtration, a few additional features in this range make some models better suited to specific uses or locations. For those also exploring the wider home comfort and appliance range, our outdoor heating collection covers seasonal solutions for outdoor spaces, and the broader appliances hub is worth browsing for related home comfort products. Sleep mode reduces fan speed and noise for quieter overnight operation, which is the most practical feature for bedroom placement where noise during sleep is a consideration. Timer controls allow you to set the unit to run for a defined period rather than leaving it on indefinitely, which can also help manage energy use throughout the day. One model in this range features both sleep mode and a timer, making it particularly well suited to overnight bedroom use.

Why Shop at Factory Buys

Factory Buys is rated highly on Trustpilot by Australian customers, with consistent feedback on fast delivery and product value across our appliance range. Every air purifier comes with a 12-month warranty, and our support team is available from 8am to 8pm, seven days a week.

Which air purifier size suits your room and daily use?

Choose based on the room size you actually want to cover, then check the purifier’s recommended coverage or CADR details on the product listing. If you will run it overnight, prioritise a model designed for quieter use. For larger open plan areas, you may need a higher capacity unit or use it in the room where you spend the most time.

What features matter most: HEPA filtration, noise level, and timer?

Start with the filtration type, because that drives performance. A true HEPA filter and a suitable pre filter can help with fine particles and everyday dust, but check the listing for the exact filter grade and what it is designed to capture. Noise level matters for bedrooms and offices, so look for decibel ratings and a sleep mode. A timer helps you run it efficiently.

Where should you place it for best airflow in your home?

Place it in the room you want to improve most, ideally where air can circulate freely. Leave space around the intake and outlet vents, and avoid pushing it tight against walls, curtains, or furniture. Keep it away from corners if possible, and position it where it will not be blocked by foot traffic. The listing or manual often notes recommended clearance, so check that.

How often will you need to replace or clean filters?

It depends on the model and your environment, so use the product listing and manual as your guide. Many units have a washable pre filter you can clean regularly, while the main filter is typically replaced after a set period or when an indicator light prompts it. Homes with pets, smoke, or high dust usually need more frequent cleaning and replacement.

What delivery, warranty, and returns apply if it arrives damaged?

All orders are dispatched from our warehouse within 1 to 2 business days. Delivery typically takes 1 to 12 business days, depending on your location and the courier. All products include a 12 month warranty, and our Customer Support team is available 8 am to 8 pm, 7 days per week. If you need help at any stage, visit our Contact Us page and include your order number plus a short description so we can assist sooner.