Solvis Integrated Heating Energy Systems –

Smart Heating & Hot Water Solutions

Elegance. Efficiency. Intelligent Energy Management.

The Solvis system range — including SolvisBen, SolvisMax, and SolvisStrato — delivers a fully integrated approach to modern energy management for residential and commercial applications. Designed around flexibility, sustainability, and performance, these systems combine heating and hot water production into one intelligent platform.

Built on advanced thermo battery storage technology, Solvis systems optimise energy use by storing and distributing heat efficiently across your entire building. Whether for hydronic heating, shower hot water, or large-scale applications such as pool heating, the system adapts seamlessly to your needs.

SolvisBen

SolvisMax

SolvisStrato

Key Advantages of the Solvis System Range:

• All-in-One Energy Solution: Heating, domestic hot water, floor heating, radiators, towel rails, and pool heating from one integrated system

• Thermo Battery Storage Technology: Efficient energy buffering for maximum performance and minimal waste

• Hydronic Heating Excellence: Silent, even, and comfortable heat distribution throughout the building

• Wood Fire & Solar Integration: Compatible with wood-fired heating, solar thermal systems, and renewable energy sources

• Thermo Solar Capability: Maximises solar gain for sustainable hot water and heating support

• Heat Pump Integration: Seamless connection to modern high-efficiency heat pumps

• Instantaneous Hot Water: Reliable on-demand hot water supply without delay

• Existing System Compatibility: Can be connected to existing boilers and storage tanks for easy upgrades

• Off-Grid Ready Solutions: Ideal for remote locations or energy-independent living

• Remote Access Control: Full system monitoring and control via smartphone or browser from anywhere

• Scalable & Modular Design: Easily expand or upgrade without replacing core components

From high-end residential homes to complex commercial installations, Solvis systems are engineered to deliver long-term efficiency, comfort, and energy independence.

Solvis transforms energy into comfort — combining smart engineering, renewable integration, and future-ready design in one complete solution.

The Compact All-in-One Heating Solution

The Ultimate Flexible Energy Manager

The Central Management System

SolvisBen – The Compact All-in-One Heating Solution

SolvisBen is a compact, high-efficiency heating system designed for modern homes. It combines heating, hot water, and future energy integration in one smart unit—ideal for new builds or space-limited installations.

Key Benefits:

• Compact all-in-one unit (ideal for homes without basements)

• Integrated fresh water system for hygienic, on-demand hot water

• Low energy consumption and operating costs

• Highly durable with long service life

• Flexible: can switch between gas and oil

• Expandable with solar thermal, PV, or other energy sources

Typical Applications:

• Residential homes and new builds

• Energy-efficient houses

• Off-grid or hybrid energy systems

• Projects with limited installation space

SolvisMax – The Ultimate Flexible Energy Manager

SolvisMax is a powerful, future-proof heating system designed for maximum flexibility. Acting as a central energy manager, it integrates multiple energy sources and adapts to changing energy needs over time.

Key Benefits:

• Compatible with multiple energy sources (gas, oil, solar, heat pump, wood, etc.)

• Large stratified storage tank for maximum efficiency

• Hygienic fresh water system with high comfort

• Extremely energy-efficient (can reduce heating costs significantly)

• Fully modular and expandable at any time

• Future-proof system for long-term energy independence

Typical Applications:

• Residential and commercial buildings

• Large homes or multi-family houses

• Pool heating

• Sustainable and renewable energy projects

• Off-grid or energy-independent systems

• Complex heating setups with multiple energy inputs

SolvisStrato – The Central Energy Storage & Heat Management System

SolvisStrato is a high-performance stratified buffer tank designed as the core energy storage and control unit for advanced heating systems. It efficiently manages and distributes heat from multiple energy sources, making it ideal for large-scale and hybrid installations.

Key Benefits:

• Central “energy manager” for complex heating systems

• Connects multiple heat sources (solar, gas, heat pump, CHP, etc.)

• Advanced stratified storage for maximum efficiency

• Hygienic fresh water preparation (on-demand, no Legionella risk)

• Extremely low heat loss thanks to high-quality insulation

• Scalable for large systems and high energy demand

Typical Applications:

• Commercial buildings (hotels, schools, hospitals)

• Multi-residential and apartment complexes

• Pool heating

• Large solar thermal systems (>15 m² collector area)

• Hybrid and renewable energy systems

• Extension or upgrade of existing SolvisMax systems

Operational Setup

From an operational point of view, the Adsorption Chiller Aggregates consists of the following three cycles:

(1) Hot-Water Circuit
By means of the hot-water circuit (driving circuit), thermal energy is being supplied to power the Adsorption Chiller Aggregates and the heat exchange that happens inside of it.

(2) Re-cooling Circuit
The heat that has been supplied to the Adsorption Chiller Aggregates (heat from the object about to be cooled and heat to dry the equipment) will be removed through the re-cooler by redistribution to the environment at mean temperature level.

(3) Cold-Water Circuit
Utilising the cold-water circuit, heat will be removed from the object about to be cooled.

How it works

The mechanics of a module consist of the following 4 phases:

Phase 1: Desorption / Adsorption
The desorber is flooded with hot water (hot-water circuit). As a result the cooling agent, which has accumulated on the inner surface of the silica gel, is being expelled and liquefied on the condensator. The heat that is being generated during the liquefaction is being discharged through the re-cooler.

At the same time, the adsorber adsorbs the water vapor that is being created inside the evaporator when the object to be cooled takes in the heat supplied through the cold-water circuit. The heat that is being created during the adsorption process will be discharged – together with the liquefaction heat – into the environment. Operational phase 1 will run until the required cold-water temperature set point has been reached.

Phase 2: Heat Reclamation
Immediately after phase 1 the 3-way valves in the flow section of the three circuits will be set such that the previously desorbed Adsorber 1 will now be flooded with re-cooling water. The energy, which initially was stored in the desorber, will not be simultaneously claimed at the mean temperature sink; but instead will be pumped in the driving circuit over a period of time.

The return of Adsorber 2, which will be desorbed following the adsorption process, will for a set time supply the re-cooling circuit. Only after a certain temperature difference between the two adsorber returns has been reached, will phase 2 be terminated by switching of the 3-way-valves in the return section of the three circuits.

Phase 3: Desorption / Adsorption
The desorber will be flooded with hot water (drive temperature) and simultaneously adsorbed. The process of adsorption/desorption takes place analogously to phase 1.

Phase 4: Heat Reclamation
Immediately after phase 3 the 3-way-valves will switch in a manner such that the previously desorbed Adsorber 2 will now be flooded with re-cooling water. The heat reclamation process takes place analogously to phase 2.

Discover the potential

Drastic Energy Saving

Running only on ~50°C hot water as its energy source, Fahrenheit Chillers require little input energy to achieve large scale cooling capacities.

Expandable Interconnection

Fahrenheit Chillers can be interconnected which will result in a higher cooling capacity of up to 240kW or a greater heating output of up to 800kW respectively.

Heatpump Operation

A supporting heatpump operation mode can be selected with Fahrenheit Chillers to benefit heating requirements.

Use a modular solar hydronic heating system in conjunction with a Fahrenheit adsorption chiller to get free cooling.

The Fahrenheit Chiller is really a World Wonder – you input Hot Water and Cool Water comes out!

This cooling process is totally mechanical and does not rely on electricity to make cool water. Now this is a very big step in sustainable energy, as a combined Solar Hydronic system with a Fahrenheit Chiller results in FREE Heating & Cooling in most Australian regions!

Thanks to Fahrenheit German engineering, it is only a low energy input of 50°C – 95°C water temperature to get achieve an output of 8 – 21°C chilled water!

The low solar harvesting temperature even on cloudy days from a SOLVIS Solar System in its high flow rate, is enough to supply not only residential homes but even Commercial / Industrial projects up to 240kW!

Quick Example:
For an Australian residential house of 650m2 with sufficient insulation barriers in place, the whole house could be cooled with chilled water between 10-14°C through underfloor pipes or ceiling cooling pipes.

This process would result in a constant and comfortable room temperature, in South Australia if the outside temperature was 42°C and with the same cooling input as above, the room temperature can be held at a constant < 22°C.

Technical Information

Please download the PDFs below for more information about this product.

Fahrenheit Brochure

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