£1,000 – £2,300 to replace a standard tank water heater
That’s about 8% below the UK national average for Cardiff.
Get a free quote from local pros →In Cardiff, Wales, to replace a standard tank water heater typically runs £1,000–£2,300. Cardiff tends to run below the UK national average (about 8% lower), thanks largely to lower local labor costs. These figures come from national project ranges adjusted by ZeroFi’s local cost index — the same one that powers our instant estimates. All figures are in pounds sterling (GBP) and typically include VAT awareness — check whether a quote includes VAT.
Read the full water heater replacement guide →
In Cardiff, Wales, expect £1,000–£2,300 to replace a standard tank water heater — about 8% below the UK national average. Your exact price depends on tank vs. tankless and fuel type and unit capacity and efficiency. Describe your job to get a real quote from local pros.
Cardiff tends to run below the UK national average (about 8% lower), thanks largely to lower local labor costs.
Describe your project on ZeroFi and we’ll match you with vetted Cardiff pros who can quote it — free, no account needed, usually the same day.
Describe your job and get matched with vetted Cardiff pros — free, in seconds.