Alpha Boilers: E-Tec and InTec Range
Alpha is a UK-focused brand often specified in new-build and social housing installations, and the E-Tec and InTec ranges turn up fairly often on our service rounds as a result..
Alpha is a UK-focused brand often specified in new-build and social housing installations, and the E-Tec and InTec ranges turn up fairly often on our service rounds as a result.
How the range is built
Alpha boilers use a fairly compact chassis similar in spirit to other budget-to-mid-range combis, prioritising ease of volume installation over unusual engineering.

What we see go wrong
PCB and sensor faults are the most frequent issue, along with occasional flow switch problems affecting hot water response.
Servicing and parts
Parts availability is reasonable for current models; because Alpha is used heavily in new-build, spares supply chains are generally active.
Common Alpha boiler callouts
- No hot water despite central heating working
- Intermittent PCB-related lockouts
- Flow switch faults affecting hot water detection
- New-build commissioning and warranty-period servicing
Who does the work
- Gas Safe registered engineers — registration 554328
- Worcester Bosch accredited installer
- John The Plumb Ltd, company registration 10026483
Book an Alpha boiler diagnostic
Let us know what the boiler is or isn't doing and whether it's still under warranty before we visit.
Questions we get asked
Is Alpha a budget boiler brand?
We won't put a value judgement on it — it's a brand commonly specified in new-build and social housing, and we service it like any other.
Why does my Alpha boiler heat radiators but not hot water?
A faulty flow switch or diverter valve is the usual cause, which we can diagnose on the same visit.
Do new-build Alpha boilers need particular care during the warranty period?
Keeping up with annual servicing protects most manufacturer warranties, Alpha included, so it's worth not skipping it.
