Air Purifiers

An air purifier draws room air through a multi-stage filtration system, trapping airborne particles such as dust, pollen, pet dander, mould spores, and smoke before recirculating cleaner air back into the room. Dimplex models use a True HEPA filter as the core stage, which captures 99.97% of particles as small as 0.3 microns, far smaller than the human eye can detect.

Yes, for many people it makes a meaningful difference. Air purifiers reduce the concentration of common triggers, including pollen, dust mite debris, and pet dander, that circulate in indoor air. Running a purifier continuously in a bedroom or living room lowers overall allergen load, which can ease symptoms over time. They are a complementary measure alongside regular cleaning, not a standalone cure.

The key figure to look for is the stated room coverage in square metres and the number of air changes per hour the unit can deliver. As a rule of thumb, aim for at least three to four full air changes per hour in your room. Each Dimplex model clearly states its recommended room size on the product page, making it straightforward to match the unit to your space.

Filter life varies by model and how heavily the unit is used, but our air purifiers typically require a replacement filter every six to twelve months under normal conditions. Running the unit in a high-pollution environment, near a busy road or in a home with multiple pets, will shorten that interval. Replacement intervals and filter costs are listed on each product page so you can factor running costs into your decision.

Place the unit where air can circulate freely around it, away from walls, corners, and large pieces of furniture. For allergy or sleep-related use, a bedroom is often the most effective placement, as this is where you spend the most continuous time. In open-plan spaces, positioning the purifier centrally or near the main source of pollutants, such as a kitchen, will give the best coverage.

Yes, our air purifiers are designed for continuous operation. Running the unit constantly at a lower fan speed is generally more effective and more energy-efficient than running it at full power for short bursts. Our models include a sleep or night mode that reduces noise output, making them well suited for use in bedrooms overnight.