Flue Gas Analyser Calibration: Costs, Where to Go and How Often
- 1. Get it calibrated with the manufacturer
- 2. Where else can you get a flue gas analyser calibrated?
- 3. An approved third-party calibration centre
- 4. Through your merchant
- 5. Behind Anton Flue Gas Analysers: The Manufacturer’s Perspective
- 6. How much does flue gas analyser calibration cost?
- 7. Anton
- 8. Kane
- 9. Testo
- 10. TPI
- 11. Sauermann
- 12. Why calibration costs rise after a few years
- 13. Working out which service year you’re in
- 14. Why you need to get your flue gas analyser calibrated
- 15. What happens if your analyser goes out of date
- 16. How to get it calibrated without losing days
- 17. Proving your analyser was in date
- 18. You can sync your analyser readings straight into a certificate with GES
- 19. Tap Import Readings
- 20. GES finds your analyser
- 21. Readings drop straight in
- 22. Flue gas analyser calibration FAQs
- 23. How often does a flue gas analyser need calibrating?
- 24. Can I calibrate a flue gas analyser myself?
- 25. How long does calibration take?
- 26. Does calibration have to be done by the manufacturer?
- 27. What does a flue gas analyser calibration certificate prove?
- 28. Is flue gas analyser calibration a legal requirement?
- 1. Get it calibrated with the manufacturer
- 2. Where else can you get a flue gas analyser calibrated?
- 3. An approved third-party calibration centre
- 4. Through your merchant
- 5. Behind Anton Flue Gas Analysers: The Manufacturer’s Perspective
- 6. How much does flue gas analyser calibration cost?
- 7. Anton
- 8. Kane
- 9. Testo
- 10. TPI
- 11. Sauermann
- 12. Why calibration costs rise after a few years
- 13. Working out which service year you’re in
- 14. Why you need to get your flue gas analyser calibrated
- 15. What happens if your analyser goes out of date
- 16. How to get it calibrated without losing days
- 17. Proving your analyser was in date
- 18. You can sync your analyser readings straight into a certificate with GES
- 19. Tap Import Readings
- 20. GES finds your analyser
- 21. Readings drop straight in
- 22. Flue gas analyser calibration FAQs
- 23. How often does a flue gas analyser need calibrating?
- 24. Can I calibrate a flue gas analyser myself?
- 25. How long does calibration take?
- 26. Does calibration have to be done by the manufacturer?
- 27. What does a flue gas analyser calibration certificate prove?
- 28. Is flue gas analyser calibration a legal requirement?
Just like a car needs its MOT, flue gas analysers need calibration. Many even lock you out completely once the calibration date passes and won’t let you take a reading at all, so you’re off the tools until you can find another or it’s been serviced.
This guide covers where to send yours, what flue gas analyser calibration costs across the main brands, and how to prove your readings were taken on an in-date analyser.
- 1. Get it calibrated with the manufacturer
- 2. Where else can you get a flue gas analyser calibrated?
- 3. An approved third-party calibration centre
- 4. Through your merchant
- 5. Behind Anton Flue Gas Analysers: The Manufacturer's Perspective
- 6. How much does flue gas analyser calibration cost?
- 7. Anton
- 8. Kane
- 9. Testo
- 10. TPI
- 11. Sauermann
- 12. Why calibration costs rise after a few years
- 13. Working out which service year you’re in
- 14. Why you need to get your flue gas analyser calibrated
- 15. What happens if your analyser goes out of date
- 16. How to get it calibrated without losing days
- 17. Proving your analyser was in date
- 18. You can sync your analyser readings straight into a certificate with GES
- 19. Tap Import Readings
- 20. GES finds your analyser
- 21. Readings drop straight in
- 22. Flue gas analyser calibration FAQs
- 23. How often does a flue gas analyser need calibrating?
- 24. Can I calibrate a flue gas analyser myself?
- 25. How long does calibration take?
- 26. Does calibration have to be done by the manufacturer?
- 27. What does a flue gas analyser calibration certificate prove?
- 28. Is flue gas analyser calibration a legal requirement?
- 1. Get it calibrated with the manufacturer
- 2. Where else can you get a flue gas analyser calibrated?
- 3. An approved third-party calibration centre
- 4. Through your merchant
- 5. Behind Anton Flue Gas Analysers: The Manufacturer's Perspective
- 6. How much does flue gas analyser calibration cost?
- 7. Anton
- 8. Kane
- 9. Testo
- 10. TPI
- 11. Sauermann
- 12. Why calibration costs rise after a few years
- 13. Working out which service year you’re in
- 14. Why you need to get your flue gas analyser calibrated
- 15. What happens if your analyser goes out of date
- 16. How to get it calibrated without losing days
- 17. Proving your analyser was in date
- 18. You can sync your analyser readings straight into a certificate with GES
- 19. Tap Import Readings
- 20. GES finds your analyser
- 21. Readings drop straight in
- 22. Flue gas analyser calibration FAQs
- 23. How often does a flue gas analyser need calibrating?
- 24. Can I calibrate a flue gas analyser myself?
- 25. How long does calibration take?
- 26. Does calibration have to be done by the manufacturer?
- 27. What does a flue gas analyser calibration certificate prove?
- 28. Is flue gas analyser calibration a legal requirement?
Get it calibrated with the manufacturer
The manufacturer is a safe bet and always a good place to get your analyser calibrated, especially if you want to extend your warranty. These prices are ex VAT, as of writing this article in autumn 2026.
Kane
Expect to pay approximately £165 for a calibration with Kane. They don't publish prices pubicly, so log into the KANE dashboard with your serial number to get a figure for your analyser.
Same day turnaround times.
Book with KaneAnton
£115 a year for a Sprint Pro 1 to 4, or £184 for a Pro 5 or 6. Year five steps up to £219 and £289. Guaranteed two working days.
Book with AntonTesto
£139 a year for most domestic models, including the 310, 320, 327 and 300, with the third-year service at £179. The commercial 300LL and 330LL run £169 to £219. A 24-hour express service is available.
Book with TestoTPI
Approximately £95 a year for a DC710 or 709R and £110 for a DC711, with return carriage included. Year six steps up to £195 or £210. TPI quote you after inspection rather than charging a flat fee upfront.
Book with TPISauermann
£112.50 for an Si-CA 030 or 130, and £128.50 to £198.23 for an Si-CA 230 depending on how many sensors it carries. Delivery both ways is included and they quote three working days.
Book with SauermannWhere else can you get a flue gas analyser calibrated?
Apart from sending it back to the manufacturer directly, you have a couple of options.
An approved third-party calibration centre
You can also use an independent centre that the manufacturer has approved. Plenty of engineers assume calibration has to go back to the manufacturer directly, but these centres can be more convenient depending on your location.
Make sure you’re going to an approved centre, as this will keep your warranty valid.
Through your merchant
Some merchants will take the analyser off you and handle the send-off. Handy if you’d rather not trust it to a courier yourself, though it usually adds a few days to the round trip.
One reason many engineers prefer going to their merchant is because they’ll often offer a rental unit while your analyser is away being calibrated, so there’s no downtime at all for your work.
GAS ENGINEER PODCAST
Behind Anton Flue Gas Analysers: The Manufacturer’s Perspective
How much does flue gas analyser calibration cost?
Budget somewhere between £100 and £250 a year for a domestic analyser, depending on the make and model. Commercial kits will be more expensive.
Rates may vary depending on whether you go to the manufacturer, a merchant, or an approved service centre.
All prices below are ex VAT and correct as of time of publishing.
Anton
Anton charge £115 a year for a Sprint Pro 1 to 4, and £184 for a Sprint Pro 5 or 6. In your fifth year, this increases to £219 and £289 respectively.
Kane
Kane don’t directly publish their calibration prices, but you can expect to be charged around £165 for popular models like the 258 and 458s, £235 for the 460 and 958, ad £275 for the 988. In the fifth year, they’ll charge an extra £40 to £70 on top, depending on the model. For specific prices, log into the KANE dashboard.
Testo
Testo charge £139 a year for most domestic models, including the 310, 320, 327 and 300. The commercial 300LL and 330LL are £169 to £219.
TPI
Much like the up-front cost for their analysers, TPI generally works out the cheapest: roughly £95 – £110 a year, with return carriage included. However, TPI’s process is to quote you after inspection rather than quote a flat fee upfront.
Sauermann
Sauermann charge £112.50 for an Si-CA 030 or 130, and £128.50 to £198.23 for an Si-CA 230, depending on how many sensors it carries. Delivery both ways is included and they quote three working days.
In the market for a new analyser? To find out which analyser is best suited to your work, check out our flue gas analyser buying guide that recommends a range of specific models.
Why calibration costs rise after a few years
Every manufacturer charges a flat fee for the first few years, but things get more expensive the older your analyser is. This is because analysers are complex scientific instruments with delicate internal sensors that usually need replacing or a closer look after about ~5 years.
| Make | Normal year | Step-up year | Step-up cost |
|---|---|---|---|
| Testo (most domestic models) | £139 | Year 3 | £179 |
| Testo 300+ | £139 | Year 5 | £199 |
| Anton Sprint Pro 1–4 | £115 | Year 5 | £219 |
| Anton Sprint Pro 5–6 | £184 | Year 5 | £289 |
| Kane 258 / 458s | approx. £165 | Year 5 | approx. £205 |
| Kane 458s IAQ / 460 / 958 | approx. £235 | Year 5 | approx. £295 |
| TPI DC710 / 709R | £95 | Years 6 and 12 | £195 |
| TPI DC711 | £110 | Years 6 and 12 | £210 |
| Sauermann Si-CA 030 / 130 | £112.50 | No fixed year | Sensors changed as needed |
Sauermann are the exception: they cover years one to five at a flat rate and charge for sensors only if they actually need changing.
Working out which service year you’re in
If you’ve owned the analyser a while and lost track, the manufacture date is usually printed on the back. Testo print theirs as four digits for month and year, so 1218 is December 2018, or three digits where the first is the year, so 704 is April 2017. Count forward from there to get your service year.
Why you need to get your flue gas analyser calibrated
The short answer is that sensors drift. An analyser that read accurately when you bought it won’t in three years, and there’s no way to tell by just looking at it.
Plus, it’s a compliance requirement as you carry out work under Gas Safe:
- BS 7967 requires it. The standard covering portable combustion gas analysers sets out annual service and calibration.
- Your warranty depends on it. Manufacturers tie cover to the annual service being done by them or an approved centre. Missing it invalidates the warranty.
- An inspector may ask for the certificate. Without one, the combustion readings on everything you’ve issued since it lapsed are open to question.
What happens if your analyser goes out of date
Readings taken on an out-of-calibration analyser are void. In practice, most analysers won’t even let you try, since they lock out and become unusable once the calibration date passes.
If you let it run well past the date (for example, if you weren’t using that specific analyser) calibrating will usually cost extra.
The bigger risk is what it does to work you’ve already signed off. Combustion readings are the evidence that an appliance was left safe, and a lapsed calibration undermines all of them. It’s one of the more avoidable ways engineers get caught out in inspections.
How to get it calibrated without losing days
Servicing an analyser might only take a few days, but if you’ve only got one and the calibration crept up on you, it can make life a little difficult.
- Book it for when you’re off work
- Use the express option
- Keep track of your calibration date
- Send it off through your local merchant who will offer a rental unit
Proving your analyser was in date
A calibration certificate proves the analyser was accurate. It doesn’t prove which analyser you used on which job, or when.
That gap is where things get awkward months later, when a customer queries a service or an inspector picks a certificate at random. Gas Engineer Software closes it by pulling readings straight off your analyser over Bluetooth, which works with Kane, Anton and TPI models.
The figures land in the record exactly as the analyser reported them, alongside a dated report carrying the calibration information the analyser supplied. So the job record itself shows what the analyser read, when it read it, and that it was in date at the time.
USING YOUR ANALYSER WITH GES
You can sync your analyser readings straight into a certificate with GES
Tap Import Readings
As you build the certificate, tap Import Readings on the combustion section to pull your figures across.
GES finds your analyser
With Bluetooth on, GES searches and connects to your Kane, Anton or TPI analyser.
Readings drop straight in
Every figure lands in the record exactly as the analyser read it, with the report & calibration date attached for proof.
Flue gas analyser calibration FAQs
How often does a flue gas analyser need calibrating?
Once a year, every year, whether it seems to be working properly or not.
Can I calibrate a flue gas analyser myself?
No. It needs certified reference gas and equipment you won’t have in the van. It has to go to the manufacturer or an approved centre.
How long does calibration take?
Usually two to three working days once they’ve got it, plus transit. Anton guarantee two working days, Testo offer 24-hour express and Kane offer same day.
Does calibration have to be done by the manufacturer?
No. An approved third-party centre is fine and keeps your warranty valid. Check the approval before you send it.
What does a flue gas analyser calibration certificate prove?
That the analyser measured accurately against certified reference gas on the date of calibration. It says nothing about which jobs you then used it on, which is why your job records matter as much as the certificate.
Is flue gas analyser calibration a legal requirement?
It’s required by BS 7967, it’s a condition of your manufacturer warranty, and a Gas Safe inspector will expect to see a valid certificate. Readings taken outside the calibration period are void.