Air Quality & Ventilation · Accessories & Add-ons
Air Quality Monitors: What Else You'll Need
By the Nest & Yard editorial teamUpdated 2026-08-094 min read
Our pick: the Aranet4 Home Wireless Indoor Air Quality Monitor, Accurate CO2, Temperature & Humidity Sensor — the best Air Quality Monitors we tested, from £189.00.
Investing in an air quality monitor is a great step towards understanding the environment inside your home, but ensuring it delivers accurate and ongoing readings requires more than just the sensor itself. Alongside these devices, many accessories are frequently overlooked that can significantly enhance their functionality and longevity – think about secure mounting options, protective cases for transport, or potentially replacement sensors depending on usage. This guide explores the essential add-ons and consumables commonly needed alongside air quality monitors to help you get the most from your investment and maintain reliable data collection.
See the full range in Air Quality Monitors.

#1 Pick
Aranet4 Home Wireless Indoor Air Quality Monitor, Accurate CO2, Temperature & Humidity Sensor£189.00
Pros
- Precision NDIR CO2 sensor is widely regarded as one of the most accurate available
- Long battery life with a clear e-paper style display
- Bluetooth history logging tracks trends over weeks
Cons
- Significantly pricier than basic plug-in CO2 monitors

#2 Pick
SwitchBot CO2 Detector with Built-in Hygrometer, Temperature & Humidity Monitor, Bluetooth, 2-Year Data Storage£53.99
Pros
- Tracks CO2 alongside temperature and humidity in one device
- Stores up to 2 years of data for trend tracking
- Works standalone over Bluetooth, WiFi hub optional
Cons
- Full remote WiFi features require a separate SwitchBot Hub

#3 Pick
GoveeLife Smart Air Quality Monitor, PM2.5, WiFi, Temperature & Humidity Sensor, App Alerts£56.50
Pros
- WiFi connectivity enables remote monitoring and app alerts
- Tracks PM2.5 alongside temperature and humidity
- Colour-changing display gives an at-a-glance air quality read
Cons
- Full alert history requires the Govee Home app and account

#4 Pick
Amazon Smart Air Quality Monitor, Tracks PM2.5, VOCs, Humidity & Temperature, Works with Alexa£69.99
Pros
- Tracks PM2.5, VOCs, humidity and temperature in one compact device
- Works with Alexa for voice-announced air quality updates
- Can trigger compatible smart plugs or purifiers automatically
Cons
- Best value when already using an Alexa smart home setup
FAQ
My air quality monitor arrived with just the sensor unit and base – what else should I be looking for?
Most units don’t include a power adapter, so you’ll need to purchase one suitable for the unit's voltage. Some models also lack adhesive pads or mounting fixings; check the included accessories list carefully before purchasing additional ones.
I’ve noticed some monitors require calibration – what does this involve and do I need any special equipment?
Calibration often involves comparing readings with a known reference source, such as a calibrated hygrometer. The manufacturer's instructions will detail the calibration procedure, but you may need to purchase a separate calibrator if one isn’t included.
What kind of batteries do air quality monitors typically use?
Many smaller units rely on AA or AAA batteries – ensure you have spares readily available as they can drain quickly. Larger, more sophisticated models might utilise lithium-ion rechargeable batteries which are often sold separately.
Do I need a separate SD card for data logging with some monitors?
Certain air quality monitors record data to an SD card; these cards are usually not included and you’ll need to purchase one compatible with the device's specifications – typically Class 10 or UHS-I.
How do I clean the sensor unit, and is a specific cleaning solution required?
Cleaning the sensor is crucial for accurate readings; use a soft, dry cloth to gently wipe it down. Avoid using any liquids unless specifically recommended by the manufacturer – excessive moisture can damage the sensor.
I’m concerned about dust affecting my monitor’s readings - what’s the best way to minimise this?
Positioning your air quality monitor away from direct sunlight and drafts is vital, as these can disrupt airflow. Consider a small screen or cover to shield the sensor from dust accumulation.
Do I need any additional cables for connecting the monitor to my computer?
Some models offer USB connectivity for data transfer; however, a suitable USB cable (likely USB-A to USB-B) is generally not included and needs purchasing separately.
I’m interested in using the data collected – do I need any software or apps?
The monitor might come with basic accompanying software, but you may prefer a more comprehensive analysis tool. Many manufacturers offer dedicated desktop applications for reviewing and exporting your air quality data.
Are replacement sensors readily available if one fails?
Replacement sensor units are sometimes available through the manufacturer or specialist retailers – however, compatibility is key; ensure you purchase an exact match to your original model.
What about a stable surface for my air quality monitor? Do I need a specific type of stand?
While some monitors have a small base, a level and stable surface is essential for accurate readings. A small tripod or adjustable desk stand can provide this if the included base isn’t suitable.
In depth
Air quality monitors are increasingly popular in the UK as people become more aware of the impact indoor air pollution has on their health. However, purchasing an air quality monitor is only the first step. To truly benefit from its readings and understand your home’s air quality effectively, you'll need to consider a range of supplementary products and consumables that aren’t always immediately apparent in the initial purchase. Many buyers focus solely on the sensor itself, overlooking the essential supporting elements needed for accurate data and ongoing maintenance.
Firstly, think about placement and stabilisation. Most monitors are relatively small, but they still require a stable surface to function correctly. The base unit often comes with a simple plastic stand, which may be adequate for a flat table or desk. However, for more reliable readings, particularly in rooms with uneven floors or where vibrations might occur – from appliances, for example – you’ll need to consider additional stabilisation solutions. These could range from small rubber feet designed to grip surfaces, to weighted bases that offer greater resistance to movement. Furthermore, some monitors benefit significantly from being positioned on a higher surface, allowing the sensor to capture data from a broader area of the room, and in this case, a small shelf or sturdy box would be useful for support. It’s crucial to select a location away from direct sunlight, heat sources (radiators, ovens) and drafts – these can all skew readings, so careful placement is paramount, often necessitating additional support or positioning aids.
Consumables are another frequently underestimated cost. Air quality monitors rely on sensor elements that gradually degrade over time due to dust accumulation and chemical reactions. The frequency with which you’ll need to replace these depends heavily on the monitor's design and the air quality in your environment, but it’s a recurring expense. Some monitors incorporate self-cleaning mechanisms – often utilising UV light or small brushes – but these require occasional maintenance themselves. Replacement sensor elements are usually available for purchase directly from the manufacturer or through authorised retailers, though availability can vary. Regular cleaning of the exterior housing is also important to maintain accuracy; using a soft, damp cloth is generally sufficient, avoiding harsh chemicals that could damage the sensors. It’s wise to keep a small supply of replacement filters on hand if your monitor utilizes them – these will need to be swapped out periodically depending on air quality levels and usage frequency.
Beyond direct consumables, consider data logging and analysis capabilities. While many monitors display real-time readings on their screens, you may wish to track trends over time to identify patterns and assess the effectiveness of any changes you make to improve your home’s air quality. This is where external data loggers or software come into play. Some monitors have connectivity options – Bluetooth or Wi-Fi – allowing you to transmit data to a smartphone app or computer for recording and analysis. However, this functionality often comes as part of a subscription service that provides access to advanced reporting features. If you're not interested in the subscription, you’ll need to explore alternative logging solutions; these could be basic USB data loggers or even spreadsheet software for manual entry. The level of detail you require will dictate the complexity and cost of your chosen solution.
Furthermore, don't forget about calibration and maintenance. Air quality monitors are sensitive instruments and can drift out of calibration over time due to environmental factors or sensor degradation. Most manufacturers provide instructions on how to perform a basic self-calibration using known reference gases – this typically involves exposing the sensor to specific concentrations of pollutants and adjusting its readings accordingly. However, for more accurate calibration, you may need to send the monitor to the manufacturer’s service centre for professional adjustment. This is particularly important if you live in an area with exceptionally high pollution levels or if you're using the monitor for critical applications (e.g., monitoring air quality in a hospital). Regular checks of the sensor itself – ensuring it’s free from obstructions and that all connections are secure – are also vital to maintain accuracy.
Finally, consider potential integration with other smart home systems. Some newer monitors offer compatibility with voice assistants or allow you to control their settings via smartphone apps. However, this functionality often relies on a stable Wi-Fi connection and may require additional hardware (e.g., a hub) to facilitate communication. If you’re looking for seamless integration, it's worth researching the monitor's compatibility with your existing smart home ecosystem before making a purchase. Remember to factor in the cost of any necessary accessories or subscriptions when budgeting for your air quality monitoring setup – these can add up significantly over time and are often overlooked during the initial assessment.
The Nest & Yard editorial team
Written and reviewed by our UK-based team of home improvement and gardening writers, who research specs, pricing and customer reviews before every recommendation. Reviewed and updated on 2026-08-09.