Vaillant's ecoTEC Plus range is a common sight in newer UK installations, known for running quietly and efficiently — but like any boiler, it develops faults over time, and Vaillant-specific codes don't always mean the same thing as the equivalent code on a different brand.
Common Vaillant faults
- Failed ignition or loss of flame (F.28)
- Poor circulation, low pressure, or a pump fault (F.75)
- Water pressure too low (F.22)
For more codes across other brands, see our error codes page.
Genuine customer feedback
"Arrived promptly to repair my Vaillant boiler after another company let me down and left me without heating and hot water for days. Had it running again within the hour."
Verified customer · MyBuilder
New Vaillant installation pricing
| Model | Warranty | Combi swap |
|---|---|---|
| ecoTEC Plus | 10 yr | £2,699 |