5%
Extra off selected analysers and kits.
The heating-season promotion applies to qualifying Testo 327 and Testo 300 products bought between 1 September and 31 December 2026.
Testo Autumn FGA Campaign 2026
Buy the setup
you actually need.
Go analyser only, choose a complete kit, book calibration or add the bits around it. Selected Testo 327 and 300 ranges get an extra 5% off for heating season, with the first service free when you register through TIM.
testo
Loading the current Testo flue gas range.
Free delivery over £100
On qualifying UK mainland orders
Authorised Testo stockist
Genuine UK instruments and support
Calibration from £119
Selected Testo flue gas models
UK customer support
Help before and after you buy
Shop the range
Start with what you need.
Hardware only, a ready-to-go kit, calibration or the accessories around it. Products and prices below are pulled from the current Test4Less catalogue.
Shop your way
One range.
One range.
Four ways in.
Start with what you actually need — an analyser, a complete kit, calibration, or the accessory that keeps your setup going.
Heating season offer
Save on the instrument. Save on the first service.
First
Service
Service
On Testo.
Register the qualifying instrument through Testo Instruments Manager and follow the claim process for the first service.
Promotion applies to qualifying purchases made during the stated offer period. Product eligibility, registration requirements and Testo promotion terms apply.
Testo calibration
Keep the analyser working.
Book the calibration you need, send the instrument in, and get it back into your kit without making the process harder than it needs to be.
First service free
Buy it now. Register it. Service it later.
The first-service part of the promotion is handled through Testo Instruments Manager. There are four things worth remembering.
Buy an eligible analyser.
Purchase a qualifying Testo 327 or Testo 300 analyser or kit during the promotion.
Keep the claim details.
Your qualifying purchase includes the information required for the first-service claim.
Add it to TIM.
Register the new instrument with Testo Instruments Manager and complete the required process.
Book it when it's due.
Arrange the qualifying first service through TIM when the instrument reaches its service date.
Useful to know
Offer questions.
The bits worth checking before you order or register the instrument.
Qualifying Testo 327 and Testo 300 flue gas analysers and kits bought during the promotional period are included. Product eligibility is subject to the campaign terms.
Yes. Where hardware-only versions are available, you'll find them under the Analysers filter above. Kits remain separate so you can choose the setup that suits the work you do.
Yes. Calibration can be ordered separately for supported Testo flue gas analysers through the Test4Less calibration range.
Register the qualifying instrument through Testo Instruments Manager, follow the supplied claim process and arrange the first service through TIM when it becomes due.
The promotional purchase period runs from 1 September to 31 December 2026.
Testo at Test4Less
Find your analyser.
Find your analyser.
Get back to the job.
Shop Testo flue gas analysers, complete kits, calibration and accessories in one place.
Shop the Testo range