Boiler and hot-water work sits in a different pricing bracket from everyday plumbing
UK homeowners often group plumbing and heating together, but the market still prices them differently. General plumbing might cover taps, toilets, wastes, leaks, and basic sanitary work. Boiler installation, gas appliance changes, and unvented-cylinder work attract higher pricing because the engineer must hold the right competence, commissioning takes longer, and paperwork matters. If the quote includes a combi swap, controls upgrade, magnetic filter, or system flush, those items should appear clearly rather than being hidden inside a vague allowance.