Water heaters
WATER HEATERS
WH water heater
wall mounted
Scaldacqua WH a parete
Specifications Models
Download
Maximum efficiency
Thanks to the pipe-in-pipe system, cold water is initially introduced through side channels within the inlet pipe, thus avoiding direct contact with the water in the tank. Subsequently, the water is distributed 360° through 116 microholes, which ensure its uniform emission. This allows cold water to be heated immediately upon entering the tank, limiting its impact on the upper layer of hot water, without breaking the thermal stratification. The result is a 24% increase in
domestic hot water production.
Electrical safety is built directly into the structure of heat pump water heaters.
The Shock Proof system involves the use of special brass connectors, both inlet and outlet,
completely insulated from the tank. This configuration eliminates the need to install
additional dielectric connectors, because the structural insulation provides effective
protection against any accidental electrical discharge.
The wall-mounted models are equipped with a large micro-channel heat exchanger (condenser) wrapped directly on the domestic water tank. Each duct is composed of 18 microchannels of 1 mm thickness, a configuration that significantly increases the useful surface area for heat exchange, improving product efficiency by up to 30 percent.
The aluminum-titanium alloy from which they are made ensures excellent resistance to high
thermal stress and corrosion, helping to maintain performance over time.
The water heaters are also equipped with a 1.2 kW electrical resistance made of Incoloy superalloy enriched with Molybdenum: a combination of iron, nickel and chromium that is highly resistant to high temperatures, enhanced by a rare element such as Molybdenum that quadruples the protection against corrosive wear compared to standard solutions available on the market.
The digital control system enables complete management of the heat pump water heater, allowing the tank temperature to be displayed in real time and the desired set points to be set according to the selected operating mode.
Five operating modes are available: Automatic, ECO, ELEC, Quiet and Holiday.
In addition, it is possible to activate the sterilization function, which can be programmed on a daily
or weekly basis, and the Boost function.
The ECO mode allows the user to define up to three daily time slots in which the unit produces DHW, while the ELEC mode allows exclusive operation via electric heating element.
The Boost function simultaneously activates the heat pump and the heating element to ensure rapid heating of DHW. The Sterilization function can also be programmed with dedicated day and time by setting a specific set point.
Each mode or function is associated with a dedicated icon that appears on the main control screen when activated. The device is Smart Grid Ready: it can receive external signals (dry contacts) from third-party control systems to adjust set points or interrupt
production at time slots with higher energy cost.
Electricity consumption in kWh can also be monitored from the control panel, with weekly and monthly details.
Complete control with the MyTadiran app
The MY TADIRAN application enables complete remote management of the device, such as real-time temperature display, complete remote control of all features, and weekly and monthly monitoring of electricity used.
Extend the warranty up to 5 years on Mono-Multi Split!
Activating My Tadiran automatically allows you to get anextension to +5 years* of warranty on all parts of single-multi split products (excluding labor), in addition to the 2 years of full coverage.
For all other products, the warranty is 2 years full coverage +
3years on replacement parts ( excluding labor)
*If you purchased a mono-multi split before 07/31/2025.
WH water heater
underfloor
Tadiran’s new air-to-water heat pump water heaters use the natural refrigerant R290, a choice aligned with the latest trends in households for sustainable, environmentally friendly solutions. This natural gas provides efficient, environmentally friendly and comfortable hot water.
These models integrate a solar coil for added versatility.
Scaldacqua WH a pavimento
Specifications Models
| Data | |
| Volume (L) | 185L |
| Type | floor |
| Power Supply (Voltage/Frequency) | 220-240V/50Hz |
| Max pressure (bar) | 7 |
| Corrosion protection | magnesium anode |
| IP Grade | IPX4 |
| inverter | Yes |
| Rated power consumption of heat pump only (W) | 320 |
| Maximum heat pump absorption (W) | 535 |
| Maximum input power (W) | 2035 |
| Default setpoint (°C) | 56 |
| DHW temperature range with el resistor. (°C) | 35℃-75℃ |
| DHW temperature range without heating element (°C) | 35℃-65℃ |
| Refrigerant / Quantity (kg) | R290/0.15kg |
| Ozone Depletion Potential (ODP) | 0 |
| Global Warming Potential (GWP) | 3 |
| Sound Power dB(A) at 7℃ | 50dB(A) |
| Data | |
| Volume (L) | 240L |
| Type | floor |
| Power Supply (Voltage/Frequency) | 220-240V/50Hz |
| Max pressure (bar) | 7 |
| Corrosion protection | magnesium anode |
| IP Grade | IPX4 |
| inverter | Yes |
| Rated power consumption of heat pump only (W) | 320 |
| Maximum heat pump absorption (W) | 535 |
| Maximum input power (W) | 2035 |
| Default setpoint (°C) | 56 |
| DHW temperature range with el resistor. (°C) | 35℃-75℃ |
| DHW temperature range without heating element (°C) | 35℃-65℃ |
| Refrigerant / Quantity (kg) | R290/0.15kg |
| Ozone Depletion Potential (ODP) | 0 |
| Global Warming Potential (GWP) | 3 |
| Sound Power dB(A) at 7℃ | 50dB(A) |
Download
Maximum efficiency
Underfloor models integrate a compressor with inverter technology, which can modulate the absorbed power according to the actual demand for domestic hot water production.
This system makes it possible to improve energy efficiency, avoiding waste and optimizing operation at every stage of use. To complete the configuration, DC fans ensure the reduction of electricity consumption, with estimated savings of 40% to 50% compared to AC fans. The integration of these two technologies ensures consistent high performance even in harsh environmental conditions, such as particularly cold outdoor temperatures or particularly high hot water set points.
To optimize heat exchange, the water heaters integrate a large micro-channel exchanger (condenser) that wraps around the lower part of the tank.
Each duct is divided into 18 micro-channels 1 mm thick, a configuration that amplifies the exchange surface area and allows an increase in efficiency of up to 30 percent.
The structure of the micro-channels is made of a special aluminum and titanium alloy to ensureb high resistance to both high temperatures and corrosion.
In the 200- and 250-liter models there is an additional heat exchanger as standard, designed for connection with auxiliary energy sources such as boilers or solar thermal systems, with a maximum flow temperature of 85 °C.
The underfloor water heaters employ a 1.5 kW electric heating element made of Incoloy superalloy, enriched with Molybdenum. Incoloy is an alloy composed of iron, nickel and chromium, known for its high resistance to high temperatures. Molybdenum is a rare metal that increases resistance against corrosion phenomena by up to 4 times compared to traditional solutions on the market.
The digital control system enables complete management of the heat pump water heater, allowing the tank temperature to be displayed in real time and the desired set points to be set according to the selected operating mode.
Five operating modes are available: Automatic, ECO, ELEC, Quiet and Holiday.
In addition, it is possible to activate the Sterilization function, which can be programmed on a daily
or weekly basis, and the Boost function.
The ECO mode allows the user to define up to three daily time slots in which the unit produces DHW, while the ELEC mode allows exclusive operation via electric heating element.
The Boost function simultaneously activates the heat pump and the heating element to ensure rapid heating of DHW. The Sterilization function can also be programmed with dedicated day and time by setting a specific set point.
Each mode or function is associated with a dedicated icon that appears on the main control screen when activated. The device is Smart Grid Ready: it can receive external signals (dry contacts) from third-party control systems to adjust set points or interrupt
production at time slots with higher energy cost.
Electricity consumption in kWh can also be monitored from the control panel, with weekly and monthly details.
Complete control with the MyTadiran app
The MY TADIRAN application enables complete remote management of the device, such as real-time temperature display, complete remote control of all features, and weekly and monthly monitoring of electricity used.
Extend the warranty up to 5 years on Mono-Multi Split!
Activating My Tadiran automatically allows you to get anextension to +5 years* of warranty on all parts of single-multi split products (excluding labor), in addition to the 2 years of full coverage.
For all other products, the warranty is 2 years full coverage +
3years on replacement parts ( excluding labor)
*If you purchased a mono-multi split before 07/31/2025.
Accutherm Thermal Battery
Accutherm thermal batteries are modern energy-saving thermal storage tanks made of a high-performance phase change material (PCM) for reliable, safe and efficient hot water supply in a much smaller space than an ACS storage tank.
With their sleek and super-compact design, Accutherm batteries furnish the home and save valuable space. In addition, they are easy to install, have less environmental impact, and involve no routine maintenance requirements.
Accutherm E
Specifications Models
| Electrical resistance power at 230 V, 50 Hz | W | 1.800 |
| Equivalent ACS tank volume | L | 140 |
| V40* | L | 199 |
| Heat losses (kWh/24h) | W | 0,67 (28,1) |
| Energy efficiency class | C | |
| Nominal water flow rate | L/min | 15 |
| Minimum network pressure | bar/MPa | 1,5 /0,15 |
| Maximum working pressure | bar/MPa | 5/0,5 |
| Recommended mixing valve temperature | °C | 45-55 |
| Annual electricity consumption | kWh/year | 1.398 |
| Weight of product in use | kg | 140 |
* V40 refers to the volume (in liters) of hot water available at 40°C. Note: It is recommended that a mixing valve be installed at the hot water outlet to prevent the risk of scalding.
| Electrical resistance power at 230 V, 50 Hz | W | 1.800 |
| Equivalent ACS tank volume | L | 212 |
| V40* | L | 301 |
| Heat losses (kWh/24h) | W | 0,77 (32,1) |
| Energy efficiency class | C | |
| Nominal water flow rate | L/min | 20 |
| Minimum network pressure | bar/MPa | 1,5 /0,15 |
| Maximum working pressure | bar/MPa | 5/0,5 |
| Recommended mixing valve temperature | °C | 45-55 |
| Annual electricity consumption | kWh/year | 2.690 |
| Weight of product in use | kg | 178 |
* V40 refers to the volume (in liters) of hot water available at 40°C. Note: It is recommended that a mixing valve be installed at the hot water outlet to prevent the risk of scalding.
Download
Accutherm X
Specifications Models
| Electrical resistance power at 230 V, 50 Hz | W | 1.800 |
| Equivalent ACS tank volume | L | 128 |
| V40* | L | 167 |
| Heat losses (kWh/24h) | W | 0,67 (28,1) |
| Energy efficiency class | A+ | |
| Nominal water flow rate | L/min | 15 |
| Minimum network pressure | bar/MPa | 1,5/0,15 |
| Maximum working pressure | bar/MPa | 5/0,5 |
| Recommended mixing valve temperature | °C | 45-55 |
| Weight of product in use | kg | 136 |
* V40 refers to the volume (in liters) of hot water available at 40°C. Note: It is recommended that a mixing valve be installed at the hot water outlet to prevent the risk of scalding.
| Electrical resistance power at 230 V, 50 Hz | W | 1.800 |
| Equivalent ACS tank volume | L | 192 |
| V40* | L | 271 |
| Heat losses (kWh/24h) | W | 0,77 (32,1) |
| Energy efficiency class | A+ | |
| Nominal water flow rate | L/min | 20 |
| Minimum network pressure | bar/MPa | 1,5/0,15 |
| Maximum working pressure | bar/MPa | 5/0,5 |
| Recommended mixing valve temperature | °C | 45-55 |
| Weight of product in use | kg | 187 |
* V40 refers to the volume (in liters) of hot water available at 40°C. Note: It is recommended that a mixing valve be installed at the hot water outlet to prevent the risk of scalding.
| Electrical resistance power at 230 V, 50 Hz | W | 1.800 |
| Equivalent ACS tank volume | L | 256 |
| V40* | L | 333 |
| Heat losses (kWh/24h) | W | 0,84 (34,9) |
| Energy efficiency class | A+ | |
| Nominal water flow rate | L/min | 25 |
| Minimum network pressure | bar/MPa | 1,5/0,15 |
| Maximum working pressure | bar/MPa | 5/0,5 |
| Recommended mixing valve temperature | °C | 45-55 |
| Weight of product in use | kg | 233 |
* V40 refers to the volume (in liters) of hot water available at 40°C. Note: It is recommended that a mixing valve be installed at the hot water outlet to prevent the risk of scalding.
Download
How it works
The PV key allows Accutherm's heating system to be converted from mains power supply to different types of power supply: Photovoltaic, Heat Pump, Boiler.
Features
Space-saving innovation
Up to 4 times smaller than conventional ACS tanks.
Integrate your PV system whenever you want
Just add the Optimino PV key to harness your energy at no cost.
Maximum simplicity
Easy to install, with less piping, no anodes and routine maintenance requirements.
Maximum efficiency
Vacuum insulation panels for minimized heat loss.
Cheaper bills
You can use off-peak power supply or photovoltaics at no cost.
Comfortable showers
It turns showering into a true moment of well-being and comfort.
Legionella protection
Thanks to the instantaneous exchanger and innovative design, there is no requirement for time-consuming anti-legionella cycles.
10-year warranty
Unique 10-year warranty on heating element and storage, including PCM (Plentigrade P58 high-performance phase change material for instant hot water supply).
Choose your Accutherm
Dimensions
CONTACTS