Looking for an electric hot water system without a bulky traditional cylinder? The Ocean Water Solution from Trust Electric Heating stores thermal energy in a compact unit and supplies mains-pressure hot water when you need it.
Ocean is a compact electric hot water solution designed to replace or complement a home’s existing hot water arrangement. Instead of relying on a large conventional water-storage cylinder, it stores heat in a phase change material (PCM). When hot water is needed, that stored thermal energy is used to heat water.
It is aimed at households considering a gas-free hot water solution, a replacement for an ageing cylinder or a more space-efficient arrangement. The correct size and installation depend on your home’s hot water demand and available services.
Ocean uses Sunamp Plentigrade® phase change material for latent heat thermal energy storage. The material absorbs energy when it changes state and releases stored energy later. This allows substantial heat storage in a compact form.
Electricity charges the thermal store; when a hot tap is opened, the system transfers that stored heat to incoming water. It is not the same as a traditional cylinder holding a large volume of heated water.
Ocean supplies hot water at mains pressure, which can be particularly useful when replacing an older gravity-fed system. Actual shower and tap performance will still depend on your incoming mains supply and plumbing.
With thermal energy stored in phase change material, Ocean can reduce the space needed for hot water storage compared with some traditional cylinder installations. This may help free up valuable cupboard or utility space.
Ocean is designed with hot water recovery in mind. Suitability for consecutive showers, baths and other household demand depends on the selected unit, electrical supply and the way your home uses hot water.
Ocean is an electrically charged hot water solution, so it can be considered by homes without mains gas or by homeowners planning to move away from a gas-based hot water system.
An electrically charged hot water system may be able to use electricity generated by solar panels or supplied during cheaper tariff periods, subject to suitable controls and installation design. Savings depend on the tariff, usage and system configuration; they are not guaranteed.
Ocean may be worth discussing if you have weak gravity-fed hot water, an ageing hot water cylinder, limited cupboard space or a plan to move towards an all-electric home. A proper assessment should consider your household’s peak demand, water pressure and flow rate, electrical supply, placement and access for maintenance.
Installation matters: Units need to remain accessible for maintenance. Some locations, including unheated lofts and garages, can create freezing or warranty risks unless the manufacturer’s specific conditions are met. Always confirm the appropriate location and any insulation requirements before installation.
Ocean is a compact electric hot water solution that stores thermal energy using phase change material and supplies mains-pressure hot water when required.
No. Ocean is an electric hot water solution and does not require gas to heat the stored energy.
Ocean supplies mains-pressure hot water. It may improve performance when replacing a low-pressure gravity-fed system, but the result depends on incoming mains pressure, flow rate and the property’s plumbing.
Ocean uses Sunamp Plentigrade phase change material, which absorbs and releases thermal energy as it changes state.
Depending on the electrical design, controls and tariff, an electric hot water system can be configured to take advantage of off-peak electricity or solar generation. Suitability should be confirmed for the specific Ocean installation.
Thinking about upgrading your hot water? Tell us a little about your home and our team can help you explore the right Ocean solution.
Since joining Trust in May 2026, Harry has brought creativity, energy and fresh ideas to the marketing team. He enjoys curating digital content to reflect demand and preferences, helping to keep the Trust brand engaging, relevant and connected to its audience.
Harry Otuechere
Marketing Executive
Tags: Ocean Hot Water, General Guides.
Looking for a smarter way to heat your water? Discover how the innovative Ocean Hot Water Solution delivers mains-pressure hot water without the need for a bulky traditional cylinder. Our FREE guide explains how the technology works, its benefits and why it could be the perfect solution for your home. Download Your FREE Guide Now
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