Check the capacity specified for the existing system or by its designer, then compare it with the usable space. A larger stated volume is not automatically a better replacement if the connections or application differ.
Cold water cisterns and header tank choices
Replacing a water tank starts with the space around it, not just the stated capacity. MacBlair lists rectangular cold-water cisterns in several gallon sizes, a galvanised 10-gallon header tank and an enclosed 50-gallon tank with a lid. Measure the access route as well as the final installation position before selecting a vessel.
The listed tanks include compact and larger rectangular shapes, so compare external dimensions, capacity and the manufacturer's intended application. A lid is specified on the enclosed 50-gallon option; check each other product individually for supplied covers and fittings. For pipework changes, the pipe fittings range covers the wider connection work.
Look at the existing inlet, outlet and overflow positions before replacing a tank. If the project also involves the stored hot-water side of the system, the cylinder range is separate from these cold-water vessels. Match the replacement to the system design and its installation instructions.
Water Storage Tanks FAQs
Measure the loft hatch and the full route to the installation point, then compare those measurements with the tank external dimensions. Allow for handling room; capacity alone does not tell you whether the tank can be moved into place.
The listed enclosed 50-gallon model explicitly includes a lid, but do not assume the same for every tank. Check the supplied components for each product before ordering.
No. A header or cold-water storage tank holds water for the system, while a hot-water cylinder stores heated water. Identify which vessel is being replaced before choosing a product.
Compare inlet, outlet and overflow locations with the existing pipework and confirm the tank is intended for that application. Follow the manufacturer instructions for support, fittings and access for future inspection.