Check 04 of 9 · Included in every service

Combustion Flue Analysis (CPA)

Accurate gas-to-air ratio testing for safe & efficient boilers on the Isle of Wight

Flue gas analyser connected to a Vaillant combi boiler during a service
Combustion analysis during a boiler service

As part of our comprehensive boiler servicing across the Isle of Wight, we carry out a detailed Combustion Performance Analysis (CPA), also known as a flue gas analysis. This test measures the gas-to-air ratio inside your boiler to ensure complete and efficient combustion.

Correct combustion is essential for both safety and efficiency. If the gas-to-air mixture is incorrect, your boiler may burn fuel inefficiently, leading to higher energy bills, increased wear on internal components, and in severe cases, the risk of carbon monoxide production.

Using calibrated flue gas analysis equipment, we measure carbon monoxide (CO), carbon dioxide (CO₂), oxygen levels, and flue temperature. These readings confirm whether your boiler is operating within manufacturer specifications and current UK gas safety standards.

For homeowners in Newport, Ryde, Cowes, Sandown, Shanklin, Ventnor and across the Isle of Wight, this test provides reassurance that your heating system is running safely and economically.

Benefits of a combustion analysis include:

  • Improved energy efficiency
  • Lower fuel consumption
  • Reduced emissions
  • Early detection of developing faults
  • Extended boiler lifespan

If adjustments are required, we make precise calibration changes to ensure your boiler is performing exactly as it should.

Reviews

Trusted by homeowners across the Island

“Very happy customer here. [Isle of Wight Boilers] provides a very efficient & professional boiler service. I won’t hesitate to use [them] again & I’m more than happy to recommend IOW Boilers.”

Lisa Rowe Boiler service

“[The engineer] was fantastic, came out on weekend as our boiler stopped working. Very knowledgeable and super friendly. Cannot recommend enough.”

Matt Sprooles Breakdown

“Used Isle of Wight Boilers for our annual boiler service and have absolutely no hesitation in recommending. A very efficient and thorough job; we are extremely pleased.”

David W Annual service

“Very professional and thorough service carried out by Isle of Wight Boilers. Highly recommend.”

Nicholas Morter Boiler service

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