Premium hydronic climate control
Comfort in summer and winter, with energy from your own roof.
Heat pumps powered by solar panels, a buffer tank and quiet fan coils in every room. We design and install the complete system.
How it works
From the sun to every room
- Solar panelsThey produce electricity on the roof. The heat pumps use it directly and the rest comes from the grid.
- Heat pumpsIn winter they extract heat from the outdoor air, in summer they reject it. They work best with low-temperature water.
- Buffer tankThe buffer tank holds the hot or chilled water and evens out the heat pump starts. Midday solar surplus can be stored here.
- Supply and return risersThey carry the water to each apartment or zone, where consumption can be metered separately.
- Fan coilsThey heat, cool and dehumidify each room, with the temperature set separately.
Benefits
One system, all year round
- Heating and coolingThe same pipes and terminals, winter and summer.
- DehumidificationIn summer the fan coils remove moisture from the air.
- Energy from the roofThe heat pumps use the electricity the panels produce.
- Clean façadesWith a rooftop plant, no outdoor units on the façade.
- Each room at its own temperatureA thermostat or remote control in every room.
- QuietTangential fans with DC Inverter motors and quiet modes.
- Fair cost sharingA heat meter per apartment with a shared plant.
- App controlModels with Wi-Fi+ work with Smart Life, Google Home and Alexa.
For every building
Choose your building type
The Sollis collection
Terminals, zoning, ventilation and control
Hydronic terminals for low-temperature water, zoning with a single concealed fan coil, air conditioning without an outdoor unit, heat recovery ventilation and thermostats.
Product technical data come from the Sollis 2024 catalog.
All productsComplete HVAC services
One partner, from the first visit to commissioning
You don't have to coordinate the designer, the equipment supplier and the installer yourself.
Technical assessment
We visit the building and look at the roof, the existing system, the electrical connection and the consumption. We tell you what can and cannot be done.
Design
We calculate heating and cooling loads and size the heat pumps, the hydraulic circuit, the terminals and the solar array.
Heat pumps and solar panels
The panels on the roof power the heat pumps. Daytime surplus energy can be stored as hot water in the buffer tank.
Fan coils and terminals
We choose the right terminal for every room: wall-mounted, recessed, false-ceiling or bathroom units.
Installation
Hydraulic, electrical and solar installation, coordinated with the contractor, the owners' association or the building manager.
Commissioning
Hydraulic balancing, settings, tests and training for the people who use and manage the system.
Heat recovery ventilation
Fresh air with the windows closed, recovering part of the heat from the exhaust air.
Automation and control
Room and zone control from a thermostat, an app or the building management system.
Dedicated consulting
Tell us about your building
Tell us what you have: an apartment block, offices, an industrial building, a hotel, a guesthouse or a house. We come back with the questions we need answered, arrange a visit and prepare the quote.
Quotes and consulting