Designed to maximize energy efficiency and reduce waste, the new battery thermal coil from Tadiran offers instant domestic hot water production and combines performance high performance and compact size, representing the ideal choice for modern needs of renewable energy.
Designed to maximize energy efficiency and drastically reduce the technical footprint, Tadiran’s new thermal coil offers instantaneous domestic hot water production, thanks to its 22 mm diameter finned copper-aluminum tube heat exchanger.
Accutherm’s main innovation lies in going beyond the traditional concept of a “kettle.” While classic systems store heat by heating large volumes of water, this thermal battery uses the phase-change material Plentigrade P58®. This is a non-toxic and non-flammable substance that, by exploiting the change of state, can store up to four times the energy density of water. This provides the same amount of heat as a bulky traditional tank in an extremely thin and compact module that can easily blend into a cabinet or under a countertop.
Technical longevity is one data point that certifies the soundness of the investment. The PCM material used has been tested to withstand more than 40,000 phase change cycles, which translates into an estimated service life of about 50 years without any degradation of storage capacity. Unlike steel boilers, which suffer from corrosion and scale buildup over time, reducing their efficiency, Accutherm maintains its technical performance consistent for decades, ensuring that hot water production is always hygienic and free of bacterial hazards due to the total absence of stagnant water in the system.
The adoption of this technology becomes particularly convenient in renovation contexts where space is at a premium, such as in small city apartments or cramped technical rooms. A concrete example of its usefulness is found in homes that aim for maximum hygiene: because Accutherm produces hot water instantaneously only when withdrawal is required, the stagnation of water typical of large tanks is avoided. This eliminates the risk of bacterial and Legionella growth at the root, making expensive and time-consuming high-temperature thermal disinfection cycles unnecessary.
In terms of operational efficiency, Accutherm boasts a Class A+ energy rating. This excellence is ensured by the use of vacuum insulation panels (VIP), which reduce heat loss dramatically: it is estimated that switching from a conventional boiler to an Accutherm system can generate savings of up to 1,000 kWh per year. A further quantum leap is achieved by integrating Accutherm with a photovoltaic system. In this configuration, the system behaves like a real storage battery, but of the thermal type. During peak solar production hours, when the energy produced by the panels exceeds the house’s instantaneous consumption, Accutherm uses that surplus to charge itself with heat. That energy, which would otherwise be sold to the grid at little profit, remains stored inside the PCM material to be returned in the form of hot showers during the evening or early morning, significantly increasing the household’s share of its own energy consumption.
For those who do not have a hydronic heat pump or want a more streamlined solution, Tadiran has developed the Full Electric version. Unlike the standard version, which acts as an exchanger powered by an external source, the Full Electric model is optimized to run completely autonomously thanks to an integrated electrical heating element. This version is an ideal candidate to replace old inefficient electric water heaters, offering a much more stable hot water supply and a smaller footprint, while maintaining the same ease of installation requiring only a water connection and a power outlet.
Tadiran’s Accutherm represents the evolution of the modern water heater as it transforms heat into a manageable and compact resource. Thanks to the energy density of PCM Plentigrade P58®, the system provides high instantaneous hot water production while occupying a fraction of the space required by traditional water heaters. Its versatility makes it perfect both for integrations with photovoltaics, where it maximizes self-consumption, and as a high-tech replacement for electric water heaters
in its Full Electric version. With models covering needs from 128 to 192 liters equivalent, Accutherm combines total hygienic safety, energy savings and space-saving design for every contemporary housing need.