The smarter way to replace your boiler

  • Get FREE Quotes today
  • Compare quotes & save money
  • Over 5,000 engineers across the UK
Tell us about your job
Get Free Quotes

Finding the Best Flue Gas Analysers – Our Top Five Picks

There’s no denying that a flue gas analyser is going to set you back some serious cash, but it is a vital piece of equipment when you want to test flues and complete boiler services.

Before you spend a lot of money on your new flue gas analyser, let us take you through the best on the market right now and answer some of your most pressing questions.

Our Top Picks Summarised

If you are keen to get to the answers and don’t have time to read all the information we’ve shared, then take a quick look at our top six picks:

  1. The Testo 310 – if you are looking for the very best, then this is the one to choose. It comes with a 10hr battery, a condensate trap, printer kit and filters, meaning you are good to go!
  2. The Testo 327-1 – this device is seriously pricey, but we found that it gives the best testing performance and is simple and easy to handle.
  3. The Anton eVo2Kit3 Sprint – this device is all about bulk readings and can store up to 200 at any time. You can also use it to send the readings directly to your PC for printing.
  4. The Kane 455 – if you are looking for a simple solution that has a printer, then this is the device for you, and it also comes with a KMCP2 probe too!
  5. The Regin Probe Regxa 1 – if your budget is the most important factor for you, then this is the one you need; it’s low in cost but works well.

Our Selection Method

When it came to picking the best flue gas analyser, we used a clear rating process that focused on four main areas:

  • How easy the device is to use
  • How long the battery lasts when in use
  • How many readings the device can store
  • How simple it is to print the results and whether the device had printing capabilities

Once we analysed these four areas, we were then able to rank order each device to get the five best picks.

Getting to Know Our Top 5 Flue Gas Analysers

The Testo 310

Interestingly Testo models have achieved both first and second place for the best flue gas analysers, but this is not a real shock when you consider that they are one of the most well-known brands. The Testo 310 offers high-quality support with a simple-to-use design. 

The Testo 310 provides the capability to get Direct O2, glue gas, CO and ambient temp measurements, as well as being able to switch to a range of different gas types with ease, making your job quicker to complete.

It comes with a 10-hour battery, a USB charging port and can be up and running in half a minute! It’s also made from tough and durable materials and comes with a condensate trap and probe filters to help you keep it in good working order and a printer kit. For £500, you are really getting a great piece of kit!

The Testo 327-1

The Testo 327-1 is another great choice that is just 500g in weight and comes with a 5-hour battery life that is simple to recharge when it runs out.

In terms of measurements, you can get Ambient CO readings and draught measurements as well as combustion efficiency, CO2, CO and O2 levels, as well as temperature readings. 

Each of the readings can be stored and printed without any hassle either. It’s not as good as the Testo 310, but it comes in a close second place!

The Anton eVo2Kit3 Sprint

If you have a bit of money to play with, then the Anton eVo2Kit3 Sprint is worth checking out and comes in at £760. It has a range of great capabilities and can provide temperature readings, ratios of CO and CO2, efficiency information and can store up to 200 readings that you can print later.

Each of the readings can be accessed directly from the handset, or you can send them directly to your computer to look at and print later. 

The device comes with a full 12 months warranty and comes with batteries, and a probe. However, we were disappointed that the kit doesn’t come with a carry case which can be purchased separately.

The Kane 455

Another well-known brand is Kane, with devices that are trustworthy and high-quality but that comes with a hefty price tag. The 455 is no different and comes with an analyser, batteries, printer, probe and rubber boot.

It’s easy to use and provides you with combustion tests, temperature information, pressure tests and more, making it easy to complete the testing that you need with one device.

The printer is also a great addition and runs via infrared. Sending all your results to the printer is also super simple and can be done from the handset whenever you need it.

The Regin Regxa 1 Probe

Finally, sometimes the affordability of an item is the most important factor, especially when cash flow is tight. The good news is that the Regin Regxa 1 Probe comes in at around £300 and offers accurate testing capabilities too.

It is designed to provide you with all the domestic gas testing you need and works with gas, LPG, oil and butane systems. The only downside is that it does not come with a carry case, so you will need to factor in buying one to your overall budget.

The device is covered by a year’s warranty, which gives you peace of mind that you are covered if anything should go wrong.

Common Questions About Flue Analysers

If you are not sure what to look for in your flue analyser, then check out the common questions that we get asked and the answers that we have provided:

What Does a Flue Gas Analyser Do?

Flue gas analysers work to measure fossil fuel emissions that are produced by appliances, helping to work out if a device is working properly or not. They can also be used to measure CO2 levels and the air quality of a property, helping to keep the occupants safe.

How Do I Understand Flue Gas Analyser Readings?

When it comes to understanding the readings on your flue gas analyser, you are looking for a ratio of no more than 0.004 for flue gases, no more than 350PPM for CO concentration, and the readings should be completed by a Gas Safe engineer to ensure they are accurate.

Can I Calibrate My Flue Gas Analyser?

No – you should not attempt to complete a calibration yourself, as the manufacturer will do this for you to ensure the device is working properly and the readings can be trusted.

Which Flue Gas Device Should I Buy?

You will see that our top choice for a flue gas analyser is the Testo 310, as it is tough, simple to operate and has a great battery life. We also love it as it has a printer as part of the package and can be easily charged with a USB charging port.