How long does a boiler replacement take?

A straightforward swap typically takes one day (6-8 hours). If the boiler is being relocated or the system needs significant pipework changes, it can take 2 days.

Will I have heating during the installation?

No, the heating system will be drained and offline during the installation. Plan for a day without heating and hot water. Most plumbers can have the new boiler running by evening.

Should I get a combi or system boiler?

Combi boilers are compact and heat water on demand, great for smaller homes. System boilers use a cylinder and can supply multiple taps simultaneously, better for larger families. Your plumber should advise based on your house size and water demand.

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Boiler Replacement Cost Ireland 2026: Pricing Guide

Boiler Replacement Cost Ireland 2026: Standard combi boiler replacement €3,500 to €4,500. System boiler with cylinder €4,000 to €5,500. Boiler relocation add €500 to €1,500. Full heating system replacement €6,000 to €10,000+. Your plumber must be RGI registered for gas boiler work. SEAI offers grants for heat pump installations. Quote should include old boiler removal, new A-rated condensing boiler, flue, controls, powerflush, and commissioning.

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