Hot Water CylinderEdinburgh

Unvented cylinders deliver mains-pressure hot water (great for powerful showers) and are ideal for Edinburgh homes with good mains pressure (typically 1.5–3 bar). Vented cylinders are suited to properties with naturally low mains pressure or older plumbing systems. Edinburgh's mains pressure varies by area — we test at free survey and recommend the correct system for your property.

Vented copper cylinder installed in Edinburgh: £900–£1,600 including cylinder, immersion heater, and connections. Unvented cylinder installed: £1,400–£2,800 including expansion vessel, pressure reducing valve, safety valves, and G3 certification. Thermal store: £2,000–£4,000 installed. Prices include VAT and all required compliance documentation.

Yes — we install hot water cylinders across all Edinburgh areas including Morningside, Stockbridge, Leith, Bruntsfield, Marchmont, Murrayfield, Corstorphine, Newington, Portobello, Trinity, Inverleith, Blackhall, Liberton, Gorgie, and all surrounding Lothians areas. We carry G3 qualified engineers for unvented cylinder work.

As a guide: 1–2 people (1 bathroom) — 120–150L; 3–4 people (2 bathrooms) — 180–210L; 4–5 people (2+ bathrooms) — 250–300L; 5+ people or large Edinburgh homes — 300L+. We calculate using actual demand modelling based on your peak hot water usage patterns and simultaneous outlet requirements.

Yes — unvented cylinders must be annually serviced by a qualified G3 engineer (this is often a building standards requirement and a warranty condition). We check the expansion vessel pre-charge pressure, test the temperature/pressure relief valve, inspect the pressure reducing valve, and check all safety devices. Annual service cost in Edinburgh: £120–£180.

Common causes of low hot water pressure in Edinburgh homes: gravity-fed vented system (solution: unvented cylinder or shower pump), partially closed service valve, blocked strainer on cylinder, failing pressure reducing valve on unvented system, or scale buildup in the cylinder coil. We diagnose the root cause at survey and recommend the most cost-effective fix.

Yes — we regularly carry out this conversion in Edinburgh homes. The work involves removing the cold water header tank (usually in the loft), installing a new unvented cylinder with its associated safety components, and ensuring adequate mains supply pressure (minimum 1.5 bar dynamic). We notify Building Control as required and issue G3 certification on completion.

Yes — unvented hot water cylinder installation in Scotland requires a building warrant application to City of Edinburgh Council and must be installed by a G3-qualified engineer. We handle the building warrant notification and issue all required completion certificates. This is important for home sale conveyancing.

Yes — solar thermal and solar PV diverters (e.g. Immersun, Solar iBoost) can heat your cylinder for free when the sun shines. Edinburgh averages 1,400 hours of sunshine per year and solar diverters can heat up to 60% of your annual hot water from surplus solar generation. We can specify cylinders with twin coils for both boiler and solar input.

A straightforward like-for-like vented cylinder swap takes 1 day. Unvented cylinder installation (with expansion vessel, PRV, and safety gear) takes 1–2 days. Converting from vented to unvented (removing loft tank, replumbing) takes 2–3 days. We always restore your hot water before leaving on day one.