03.09.2026

Get the Advantage

Did you know that many HVAC units still use classic resistive heaters with a standard operating temperature as high as 250°C? In the event of a fan failure or lack of airflow, this temperature can rise up to 400°C. This poses a real risk of overheating the housing and structural components.

Choosing the right heating system is not just a matter of efficiency, but above all, the safety of your facility and the people you invite into it. That is why in our air curtains (GUARD, GUARD ONE, and GUARD PRO series), we have moved away from outdated solutions.

We use modern PTC (Positive Temperature Coefficient) heating elements that guarantee:

✔️ Faster and more efficient heat exchange (thanks to a large air contact surface area).

✔️ Significantly lower operating temperature of only approx. 115°C.

✔️ Full self-regulation and safety. In the event of airflow failure, the PTC element automatically reduces power consumption, eliminating the risk of overheating.

✔️ Half the cool-down time.

Although PTC technology involves a slightly higher initial cost, for us, reliability, energy efficiency, and user safety are priceless. Our advantage is uncompromising quality.

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05.06.2026
Ready-to-use materials for HVAC designers
CAD files and Online device selection
05.06.2026
SONNIGER selection app
Selection program for heaters and air curtains
28.05.2026
Global reach
500 000 units sold worldwide
19.05.2026
MIX Destratifier
Selection and Application Benefits
19.05.2026
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Quality Tested in Laboratories
12.05.2026
Smart heating control
One controller, total control.
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