Tulloch PriestCo-founder, Gas Engineer Software · Co-founder of Gas Engineer Software

Capping Off A Boiler When It's Not ID Has Consequences

25 Nov 2025 · 0 min

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0:11

Capping off a boiler when it's not actually defective causes unnecessary problems. Manufacturers design and test their equipment, so their instructions are the authority on safe operation. Follow the specs instead of being overly cautious.

I never penalise someone for being overly cautious, but complaints do get made because people are too cautious. They cap off boilers that are only at risk.
I think you mentioned in the last one, you also need to look at the manufacturer's—
100%. Manufacturer's instructions always, always come first. Manufacturers are the ones that have designed the appliance. They have tested the appliance. What they state goes, basically.

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