Discover the Q.rad

The smartest heater in the world

The ultimate confort


Heating bill


Reused energy


High-end soft heat


Totally silent

Have you ever noticed that your personal computer was producing heat while processing tasks? At Qarnot, we decided to take advantage of this waste heat to deliver it directly to buildings. Qarnot designed the Q.rad, the first computing heater embedding microprocessors as a heat source and connected to the Internet.

A revolutionary fusion

The Q.rad is a smart and connected digital heater, fusion of an electrical heater and a high-performance computing server.

It relies on high-end hardware renewed every 3 to 5 years.

Free & green heating

The Q.rad produces heat by computation, the electricity consumption is measured by an embedded counter and related expenses are automatically refunded to the host.

The heat is a by-product of workload processing. Avoiding the use of cooling systems makes the Q.rad a 100% sustainable heating solution.

High-end soft heat

A Q.rad can heat up a 150 to 300 sq. feet room in a building meeting modern isolation standards.

The Q.rad is a system with high inertia and produces a high quality “soft” heat, as opposed to electrical convectors. The heat produced is homogeneous and stable, distributed evenly throughout the room, ensuring maximum comfort and a gentle feeling comparable to that of central heating.

An infrastructure for green computing

The heat generated by all the data centers in the world could already heat half of Europe’s households and doubles every 5 years. The digitalization of our economies call for drastically more energy efficient alternative models to data centers. Instead of concentrating servers in data centers, Qarnot distributes them within the city in the form of heaters, computing remotely for companies.

Our Computing Services

Timeless design

Materials & engineering

Qarnot transformed radiators with transitional and innovative design. The creation of the Q.rad was driven by a exacting vision for the highest standards of heating and engineering. The neat black aluminum monoblock dissipator embodies the high-quality soft heat of the Q.rad. It’s capped off by a unique crafted shelf available in different high-end materials (wood, Corian®, concrete).

Technical Specifications


65×62.5×15 cm




27 kg


Wood shelf

Anodized aluminium heatsink


0 dB


110/230V AC

RJ45 Ethernet


Temperature, CO2, humidity, luminosity, pressure


Capacitive touch

Mobile App



Gigabit Ethernet


3 computing units (Intel core i7 @ 4GHz)

Want to know more?

You want to know more about integrating Q.rads in your project?