An air purifier kit is a modular, high-airflow purifier you can order pre-built or assemble yourself in about half an hour. CleanAirKits designs portable, hospital-grade MERV-13 purifiers around one idea: spread the airflow across a large filter area so you move a lot of clean air quietly and cheaply. This site exists to help you understand what a kit is, see the full range at a glance, and choose the right model for your room — whether you want to build it yourself or open the box and switch it on.
What is an air purifier kit?
A traditional air purifier is a sealed appliance: what you buy is what you get. An air purifier kit flips that. It is a modular system built around a sealed enclosure, an array of quiet low-pressure fans and genuine MERV-13 filtration, supplied so that you choose the parts that matter and put it together — or have it delivered assembled.
The "kit" approach has three practical advantages:
- Modular by design. You pick the filters, guards and finishes; when a filter is spent you simply swap it, with no tools and no rebuilding.
- Buildable in 20–30 minutes. The hard engineering — the sealed, leak-free enclosure and the fan tuning — is done for you. Assembly is straightforward and needs no special skills.
- Pre-assembly option. Prefer not to build? Choose the pre-assembled option and it arrives ready to run.
The physics is the same one that made high-airflow DIY purifiers famous: push air through a large filter area at low resistance and you capture far more of a room's particles per hour than a small single-panel unit ever could.
The range: which kit for which room
There are four kits in the range, each aimed at a different room and need. Every one uses hospital-grade MERV-13, runs under 35 dB and costs about £2 a year in electricity.
| Kit | Airflow | Best for | Price |
|---|---|---|---|
| Fanless Kit | Depends on your fans | Silent DIY builds (bring your own 120mm fans) | £179 |
| 5-Fan Luggable | 369 m³/hr | Bedrooms and medium rooms, up to ~450 sq ft | £229 |
| Carbon 4-Fan | MERV-13 + activated carbon | Kitchens and odours | £279 |
| 7-Fan XL | 681 m³/hr | Living rooms and open-plan, 600–750 sq ft | £279 |
If you want a simple rule of thumb: match the kit to the room. Choose the 5-Fan Luggable for a bedroom or medium room, the 7-Fan XL for a large or open-plan space, the Carbon 4-Fan wherever cooking smells or odours are the problem, and the Fanless Kit if you want to supply your own fans for a bespoke, near-silent build.
MERV-13 filtration: what it actually removes
Every kit in the range uses genuine MERV-13 filtration, the same class used in hospitals and good commercial buildings. In real terms that means capturing roughly 93% of airborne particles across a wide size range.
- Fine dust and pollen — the everyday triggers behind sneezing, itchy eyes and a stuffy home.
- Smoke and wildfire particles — the fine fraction that ordinary fabric filters miss.
- Many airborne respiratory particles — the reason high-MERV filtration became a public-health tool.
The Carbon 4-Fan adds a layer of activated carbon on top of the MERV-13 media. Where MERV-13 traps particles, carbon adsorbs gases and odours — cooking smells, fumes and general staleness — which is why it is the kit of choice for kitchens and anywhere the problem is a smell rather than a speck.
Build it yourself or order it assembled
The whole point of a kit is choice, and that starts with how you get it.
Build it yourself (20–30 minutes)
If you enjoy making things, or simply like knowing exactly how your device goes together, every kit can be assembled at home in about twenty to thirty minutes. No tools of note, no cutting, no tape — the enclosure is engineered to seal properly on its own. The Fanless Kit (£179) takes this furthest: you supply your own quiet 120mm fans and build a silent, custom purifier entirely to your taste.
Order it pre-assembled
Prefer to skip the build? Add the pre-assembly option and your kit arrives fully assembled, tested and ready to switch on. You still get the modular benefits — easy filter swaps, guards and finishes — without lifting a screwdriver.
Either way the finished purifier is identical in performance. The kit format simply lets you decide how involved you want to be.
Running cost and noise: the numbers that matter
Two things decide whether a purifier stays switched on: how much it costs to run and how much it intrudes. The whole range is engineered to win on both.
- Under 35 dB. Quiet enough to run in a bedroom overnight or a home office all day. You will forget it is on.
- About £2 a year to run. At roughly 15W, leaving a kit on continuously costs about the same as a couple of coffees across a whole year.
- Energy Star Most Efficient 2026. The low-pressure fan arrays are matched to the filters, so they waste far less energy than a single fan straining against resistance.
Because performance is Intertek-tested, these are measured figures rather than marketing claims — the difference between a device you trust and one you second-guess.
What's included, and what you can choose
Each kit ships as a complete, sealed system with everything needed to move clean air — the enclosure, the MERV-13 filtration (plus activated carbon on the Carbon 4-Fan), and, on the fan-equipped models, the tuned low-pressure fan array. The Fanless Kit is the exception by design: you bring your own 120mm fans.
Because it is a kit, you also get to choose:
- Filters — standard MERV-13, or MERV-13 with activated carbon where odours are the issue.
- Guards and finishes — so the unit suits a living room, a nursery or an office.
- Assembly — build it yourself, or add the pre-assembly option.
Every kit also comes with the free Veya app for monitoring and control, ships across the UK and EU, and is backed by a 30-day money-back guarantee so you can try it in your own home with nothing to lose.
Why choose a kit over a sealed appliance
Sealed appliance purifiers lock you in: a proprietary filter, a fixed look, and a small filter face that limits airflow. A kit is the opposite on every count.
- More clean air. The large-area, multi-fan design moves far more air than a comparable single-panel unit — up to 681 m³/hr on the 7-Fan XL.
- Cheaper to live with. Around £2 a year to run, with simple filter swaps rather than costly cartridges.
- Made to fit your room. Pick the model, the filtration and the finish — and decide whether to build it or receive it ready-made.
- Honest performance. Intertek-tested and Energy Star Most Efficient 2026, not just rated on paper.
In short, a kit gives you hospital-grade filtration and high airflow, on your terms, at a running cost you will barely notice.
