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System boiler to combi conversions

Removing a hot-water cylinder and changing to a combi boiler can alter how a home supplies hot water. Corva treats a system conversion as a survey-led project, with suitability checked before a final quotation.

Will a combi suit the household?

The number of bathrooms, incoming water supply and simultaneous demand matter. A combi is not automatically the right answer for a home with several showers in use together. We review how the property is used and explain the alternative of retaining a suitable stored hot-water system.

More than a boiler exchange

Cylinder removal, redundant pipework, controls and the boiler’s connections can add work. Flue and condensate routes also need assessment. Explain whether you expect cupboards or loft spaces to be cleared and who will make good the space afterwards.

Plan the changeover

A conversion may involve periods without heating or hot water and coordination with other trades. Ask for the installation stages, access requirements, removal arrangements and what happens if hidden issues are found. Online indicative prices cannot settle all of these details.

Good to know

System boiler to combi conversions: your questions

Clear answers before you arrange the next step.

Is a combi always cheaper to run?

No universal saving can be promised. Suitability, appliance performance, household demand and controls all affect the result.

Can I get an instant fixed price for a conversion?

A conversion needs manual review and a survey to confirm the work. Any initial estimate is subject to that assessment.

Will the old cylinder be removed?

Removal and disposal arrangements must appear in the agreed scope, along with any redundant pipework and making good.

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