Mallusk, Northern Ireland - Leak in pressurised system soon after oil boiler install

[G M]

I recently got an external condensed boiler installed that was about a year old. No more than a few weeks after, my system is losing pressure. It is now losing about 1 bat every 12 hours or so and seems to be getting worse. I've been all round the house including crawling through the attic, but no signs of any leaks. I strongly suspect the oil boiler as there has been no issues with the heating system in 2 years since it was installed. I cannot find where the pressure loss is coming from, so maybe the boiler needs checked and serviced. I've been trying to sort this via the below post, but no luck so far. Thanks!

Help - System losing pressure after oil boiler was replaced

Hi folks, About a month ago, I replaced my oil boiler/burner with a used one that is about a year old. All seemed to be well after it was replaced however, within a week or two, the whole system has started losing pressure - approximately 0.2 bar every 2-3 hours. It seemed to happen a week or...

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