Celsius infrared heat reaches walls, floors and furniture — not just the room air. Personally planned by LEWINA THERM.
This warming of building components and thermal mass works through reflected infrared heat that reaches 12 m deep into the room, and it can be regulated smartly via pulse control — digitally or via WIFI, controllable with or without an app.
Not every infrared heater is a Celsius. The patented crystal-glass technology differs fundamentally from ordinary heating foils and infrared resistance heaters:
Further down you can find out which Celsius model suits your room and how the technology works in detail.
Permanently mounted Celsius panels with digital or WIFI app control — for new builds and renovations. Also available as a modern flush-mounted installation with 5 cm of air clearance all round.
A flexible free-standing unit with no fixed installation — ideal for rented flats, offices or interim solutions.
Heat-emitting designer furniture such as our Cube, which can be placed freely in the room — heating technology that integrates invisibly or as a design centrepiece.
Celsius sauna panels with long-wave infrared-C heat, specially for the wellness area — suitable for rooms of up to 4 m³ per panel, for higher temperatures up to 38 °C, only with good insulation.
Infrared-A drying cabinet “Ripening and Drying” in spruce or Swiss stone pine (Zirbe) — for herbs, fruit, vegetables, berries, mushrooms, citrus fruit, chillies, your own spice production and even cured ham (Speck): gently from the inside out at 20–30 °C instead of dehydrating. For private and commercial use, also in use at agricultural schools.
Tap again for more information
After water damage or flooding, Celsius dries damp walls, floors and ceilings lastingly and neutralises mould, mustiness and odours from oil, mud or sewage water.
Individually planned drying and heating systems for farms: hay drying, post-ripening of fruit and cured ham, and on-farm propagation of EM (effective microorganisms).
| Type | Shape | Size (cm) | Output | Weight | Range | Suitable for |
|---|---|---|---|---|---|---|
| Square | 59.5 × 59.5 | 550 Wh | 14 kg | up to 12 m | 20–60 m³ | |
| Small, portrait | 30 × 59.5 | 280 Wh | 8 kg | up to 12 m | 5–25 m³ | |
| Small, landscape | 59.5 × 30 | 280 Wh | 8 kg | up to 12 m | 5–25 m³ | |
| Long, portrait | 36 × 115 | 550 Wh | 18 kg | up to 12 m | 20–60 m³ | |
| Long, landscape | 115 × 36 | 550 Wh | 18 kg | up to 12 m | 20–60 m³ | |
| Sauna | 59.5 × 59.5 | 800 Wh | 14 kg | – | up to 4 m³ per panel |
Planned in from the start, Celsius blends unobtrusively into modern timber constructions and supports an even indoor climate and comfortable warmth.
Can be retrofitted with just two hooks and is ready to plug in, with controls directly on the unit and no major interventions: no opened-up walls, no newly laid cables, no big building site.
With professional sizing, Celsius can heat an entire home — what matters are the building, the insulation and suitable planning.
Heat precisely where it is needed — a flexible addition to an existing heating system.
Celsius warms cool wall surfaces directly. If dampness persists, the structural cause should always be clarified first — we take care of that for you as part of the consultation.
The automatic control combines well with your own PV generation — for a more conscious use of self-generated electricity.
Ready for use immediately with no lead time — ideal for rooms that are not heated continuously.
With its own hotel function: the operating options can be restricted for guests, and several rooms or properties can be managed centrally via an app with Celsius WIFI.
Serious heating design does not simply calculate watts per square metre. What matters are room volume, insulation standard, window areas, external walls and building fabric, as well as usage and the desired room temperature. Only from these factors can it be determined how many panels make sense and in which position. We take the time for this — so that the plan fits your building and not the other way round.
INFRARED | ARCHITECT has 15 years of experience with alternative heating in new and old buildings
An alternative to the heat pump — an efficient heating solution?
Vitamin D3 and infrared — what does infrared have to do with vitamin D?
Infrared heating costs of a 92 m² flat — details on electricity consumption
Heating a kindergarten with infrared — is it possible?
Renovating an older building: in conversation with SV Mappes — drying out walls with Celsius
Not all infrared heating is created equal — the difference explained
LEWINA THERM is a sales partner of IWH GmbH (Infrarothimmel), the general distributor for Celsius. Celsius is a patented crystal-glass and frequency technology that differs fundamentally from conventional heating wire or heating foil. Conventional heating systems first warm the room air, which quickly rises again. Celsius works differently: long-wave infrared-C heat warms walls, floors and furniture through reflection and back-reflection. An integrated sensor (directly on the unit for Celsius Digital, via an additional hygrometer for WIFI) continuously records the actual demand and regulates power consumption automatically — and every room can be controlled individually.
Patented crystal-glass and frequency technology (43 patents) warms all reachable surfaces of walls, ceilings and floors as well as all furniture evenly through reflection and back-reflection — whether ceiling or floor, the warming stays within 1 °C. The air stays cooler, and convection is almost entirely eliminated.
Open PDF overview (in German) ↗Automatic power regulation via an integrated sensor with 8-step control continuously adjusts the output to the demand — every room individually controllable.
Open PDF overview (in German) ↗Each panel can be controlled individually via app over Wi-Fi (2.4 GHz), with dynamic power regulation up to 6,000 times per minute for particularly low consumption — in timber houses, values below 50 Wh can be achieved in rooms of 20 m². In addition: comfort control, hotel function, frost protection, programming and control of several houses from a single app, including ongoing updates: never an outdated heating system again.
Open PDF overview (in German) ↗No water-carrying heating pipes, no wear, 5-year warranty.
High-quality glass surfaces in various formats — heating technology that fits elegantly into the room.
Answers to the most important questions about Celsius and infrared heating — explained clearly, without the jargon.
Unlike convection heating, Celsius uses its long range of 12 m and infrared-C heat to warm all surfaces such as walls, floors, ceiling and furniture — instead of heating the air directly. This results in low convection and an optimal air humidity of 40–60%. Many people find this more pleasant, similar to natural warmth from the sun.
Yes, with professional sizing. What matters here are the building, the insulation and the number and position of the panels — a blanket statement without individual planning would not be credible.
The rated output (e.g. 550 watts) is not the continuous consumption: the automatic 8-step control continuously adapts the actual power consumption to the heat demand. Once the room is heated up and dry, consumption is often only 100–200 watts — a 20 m² room, for example, can be heated with a single panel.
Because no pipework is needed, purchase costs are often lower than for water-based heating systems. Running costs depend heavily on the building, the insulation and usage. A central heating system with all its ancillary costs usually costs more, requires ongoing maintenance and has to be completely replaced after 15–20 years at the latest.
That depends on room volume, insulation, window areas and the desired temperature — we determine the right size in a personal consultation.
Celsius is easy to retrofit without opening up walls or laying cables — even in listed buildings. Mounted ready to plug in with just two hooks and with controls directly on the unit — this makes retrofitting particularly easy.
Celsius’s automatic control combines well with your own PV generation — for a more conscious use of self-generated electricity. For this, the coordination with us should be planned in from the start.
Cool wall surfaces are often caused by damp building components. Celsius warms these directly: the dehumidification reaches up to 20 cm into the masonry, but takes time and energy until it is fully completed. This can be compared to a renovation — only directly within the building fabric, which permanently preserves the value of your building. If dampness persists, however, the structural cause should always be clarified first.
Installation is on the wall, with control — depending on the model — digitally or via app, for convenient room-by-room operation. Ready to plug in with a 120 cm cable and fastened with just two hooks — thanks to the low power consumption of the control technology, no additional wiring or fusing is required.
LEWINA THERM’s own reference projects will follow shortly — please feel free to ask us directly about installations that have already been completed.
Celsius infrared panels in a 500-year-old farmhouse — gentle warmth that blends unobtrusively into the historic timber structure. Value is also preserved by dehumidifying the old masonry — this helps prevent mustiness and mould and can also remove them.
Celsius infrared panels on the timber walls of a processing room: wall-mounted, so that work surfaces and floor stay clear.
This page is still under construction — another reference project will appear here soon.
LEWINA THERM stands for honest advice instead of sales pressure. Whether a single room, a historic building or an entire house — we listen to your situation, check the technical prerequisites and show you whether and how Celsius makes sense for you.
Whether it is LEWINA THERM, LEWINA HOLZBAU or a general enquiry — choose the right area below so that your message goes straight to the right place.
