Upgrade your home with the Aquafficient, Fischer’s innovative tankless electric water heater designed to deliver hot water quickly. Unlike traditional hot water cylinders, the Aquafficient uses a unique phase-change “heat battery” which stores thermal energy and transfers it directly to incoming cold water only when it’s needed — giving you instant hot water, reliable pressure, and minimal heat loss.
This smart, on-demand process means the Aquafficient only uses energy when hot water is called for, helping you to reduce waste and lower your operating costs. Once depleted, the heat battery automatically recharges, ensuring your household has a consistent supply of hot water 24/7.
The compact, tankless design makes the Aquafficient ideal for homeowners looking to save space and modernise older, inefficient hot water systems. With easy installation, it’s a future-ready choice for UK homes upgrading to an energy-efficient electric hot water system.
The Aquafficient tankless electric water heater is engineered for long-term reliability, with an impressive lifespan of around 40,000 heating cycles — that’s equivalent to roughly 50 years of use! For your peace of mind, it comes with a 10-year manufacturer warranty, ensuring homeowners have the same confidence we do in its performance and durability.
Thanks to its advanced heat-battery technology, the Aquafficient can store up to four times more usable heat than a traditional hot water cylinder, providing up to 280 litres of hot water (depending on the unit size). Despite the high output, its compact, space-saving design stands at half the height of a standard water cylinder, making it ideal for modern homes looking to not only gain more storage space, but an energy-efficient way to enjoy hot water.
The Aquafficient works seamlessly with Economy 7 tariffs and Solar PV systems too. Potential heat loss can be up to 4x lower than a conventional domestic water cylinder, with homeowners benefitting from reduced running costs and a lower carbon footprint.
Please find full details of our guarantee by reading our full terms and conditions.
Upgrading to our instant electric water heater shouldn’t be complicated and with the team at Fischer — it’s exactly that. We manage the entire process for you, from delivery to ensuring a smooth and hassle-free installation that immediately frees up valuable space. Most Aquafficient electric hot water systems can be installed in less than a day, with no need for large water tanks, ventilation work, or disruptive pipework.
Our qualified engineers make sure everything is fitted safely, tested thoroughly and ready to deliver reliable hot water from the get go — so you can start enjoying energy-efficient hot water without the stress shutting your existing system down for days on end.
Please Note: External plumbing components (thermostatic mixing valve, expansion vessel and pressure relief valve) will need servicing annually.
Switching to an instant electric water heater is just the beginning. The Aquafficient can be seamlessly integrated with other Fischer electric heating products, including our 40mm HeatCore radiators, creating a fully efficient, all-electric home heating and electric water heating system. Check out the Aquafficient Eco+ to learn more about how air source hot water heaters work.
With a fully electric home set up, this compatibility enables homeowners to maximise energy-saving solutions, enjoying cleaner electric energy across both their heating and hot water system.
Future-proof your home’s traditional hot water cylinder system with Fischer’s tankless, electric Aquafficient for reliable hot water all-year round.
