Mitsubishi Electric brought a new range of domestic hot water cylinders to market on 16 March 2023, describing it as a replacement for its earlier cylinder line and a complement to its residential heat pumps1. The company said the range is unvented and pre-plumbed, with eight standard and slimline variants available in capacities of 150L to 300L1.
The cylinders arrive with components already fitted. Mitsubishi Electric states the model includes pre-plumbed pumps, filters and valves, which it says reduces overall installation time1. It is also MELCloud enabled, which the company describes as giving users control and monitoring of the product, and an optional two-zone space heating control is offered, which it says improves comfort and reduces energy use1.
Robert Taylor, Senior Product Manager, led the team that designed and developed the range1. He said:
"We wanted to raise the bar with our new Pre-Plumbed Cylinder. It's been designed with intuitive installation connections in mind. With refined component design, performance has been improved so that it provides efficient and rapid heating of water. In addition to this, it comes with premium quality insulation to reduce heat loss and running costs."
The announcement gives no prices, no efficiency figures, no cylinder heat loss ratings and no warranty terms for the new range1. It also does not state which heat pump models the cylinders are intended to pair with, or whether the range replaces the earlier cylinders entirely or sits alongside them1. Those details have not been reported.
| Feature | Detail as stated |
|---|---|
| Type | Unvented, pre-plumbed |
| Variants | Eight, standard and slimline |
| Capacities | 150L to 300L |
| Pre-fitted parts | Pumps, filters, valves |
| Controls | MELCloud enabled; optional two-zone space heating control |
| Insulation | Described as premium quality |
Why it matters for households
A hot water cylinder is the store that decides how much hot water a home has available and how much heat it loses while standing idle. For a household running a heat pump, the cylinder is not a separate accessory but part of the same system, and the way it is plumbed and controlled affects how hard the heat pump has to work to reach the temperatures needed for bathing and washing1.
Pre-plumbing shifts some of the work from the installer's visit to the factory, which the company links to shorter installation times1. For a household, that can matter where labour is a large share of the quoted cost, though no figures are given here1. Insulation is the other practical point: the company says the cylinder's insulation reduces heat loss and running costs, which is the difference between paying to heat water once and paying to keep reheating it1. The optional two-zone control is presented as a comfort and energy measure rather than a hot water one1.
How a cylinder of this kind fits alongside other options is set out in the site's guide to hot water cylinders, and the specific case of pairing storage with a heat pump is covered under hot water cylinders for heat pumps. Buyers comparing brands can look at the wider list of hot water cylinder manufacturers in the UK.
What happens next
No dates for availability, pricing or further product phases are given in the announcement1. The company directs readers to a dedicated page for the range, but the announcement itself sets out no next steps1.
Sources1 cited
- Phase 2 Cylinder announcement | Mitsubishi Electric, les.mitsubishielectric.co.uk