Testo Winter Promotion 2026

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• FREE GIFT
  In Stock - Express Delivery Available

  Testo 300+ Flue Gas Analyser (Choice of Sensor)

  From £504.00 (ex VAT)
  £604.80 (inc VAT)
  • Advanced combustion analyser for boilers
  • Smart-touch display for intuitive operation
  • Measures multiple gas parameters simultaneously
  • Robust design with magnetic holder and Bluetooth connectivity
  More info
  This product has multiple variants. The options may be chosen on the product page
• FREE GIFT
  In Stock - Express Delivery Available

  Testo 300+ Flue Gas Analyser Advanced Kit (Choice of Sensor)

  From £799.20 (ex VAT)
  £959.04 (inc VAT)
  • Measures O2, CO, NO, draught, pressure, and temperature
  • Equipped with Bluetooth for simultaneous multi-gas testing
  • 5-year warranty and long-lasting battery for reliable use
  • Advanced touchscreen for detailed, real-time data display
  More info
  This product has multiple variants. The options may be chosen on the product page
• FREE GIFT
  In Stock - Express Delivery Available

  Testo 300+ Flue Gas Analyser Smart Heat Pump Kit

  £959.20 (ex VAT)
  £1,151.04 (inc VAT)
  • CO measurement up to 8,000ppm
  • Bluetooth capability for multi-probe usage
  • 5-year warranty and long battery life
  • Full kit with Testo 550i manifold and Bluetooth accessories
  More info
• FREE GIFT
  In Stock - Express Delivery Available

  Testo 300+ Flue Gas Analyser Smart Kit (Choice of Sensor)

  From £879.20 (ex VAT)
  £1,055.04 (inc VAT)
  • Measures CO up to 8,000 ppm, oxygen, and optional nitric oxide
  • Includes Bluetooth-enabled accessories for simultaneous measurements
  • Five-year sensor lifespan with reduced servicing requirements
  • Provides instant reports and remote monitoring via the Testo Smart App
  More info
  This product has multiple variants. The options may be chosen on the product page
• FREE GIFT
  In Stock - Express Delivery Available

  Testo 300+ Flue Gas Analyser Standard Kit

  £743.20 (ex VAT)
  £891.84 (inc VAT)
  • CO sensor measures up to 8,000 ppm with H₂ compensation
  • 5-inch touchscreen with smart Bluetooth connectivity
  • Parallel measurements with Testo Smart Probes
  • 10-hour battery life and 5-year sensor lifespan
  More info
• FREE GIFT
  In Stock - Express Delivery Available

  Testo 300+ Flue Gas Analyser Ultra Smart Kit (Choice of Sensor)

  From £919.20 (ex VAT)
  £1,103.04 (inc VAT)
  • Measures O2, CO up to 8,000 ppm, and optional NO for gas analysis
  • Equipped with Testo Smart App for remote monitoring and reporting
  • Bluetooth connectivity for up to 4 probes
  • 5-year sensor lifespan and a 10-hour battery life
  More info
  This product has multiple variants. The options may be chosen on the product page
• FREE GIFT
  In Stock - Express Delivery Available

  Testo 327-1 Flue Gas Analyser Advanced Kit

  £559.20 (ex VAT)
  £671.04 (inc VAT)
  • Domestic boiler commissioning and servicing
  • Displays 4 measurements at once
  • Tightness and let by testing
  • Flow and return temperature
  More info
• FREE GIFT
  In Stock - Express Delivery Available

  Testo 327-1 Flue Gas Analyser Standard Kit

  £439.20 (ex VAT)
  £527.04 (inc VAT)
  • Carries out all required domestic tests
  • Multi fuel including natural gas, LPG, kerosene and oil
  • Shows 4 readings at once
  • CO over exposure protection
  More info