Lm-therm. We control the climate.

Control cabinet heaters and
control cabinet cooling units
for the perfect protection!

Lm-therm. Anyone can do simple.

Customised solutions
in control cabinet air conditioning.

Lm-therm. Cable good. All good.

Individual cable production –
precise, fast, flexible.

Customized control cabinet air conditioning for almost every application.

Dangers from humidity, condensation and frost for your valuable electronics? Too cold or too warm for your control system?

We are the solution to your problem if standard control cabinet heating is not suitable. Our strength are customized solutions for control cabinet climate control and industrial climate control. We enable individual mounting types, lengths and connectors of the contection cable, special voltages, adaptations to enclosure Sizes and much more. Get in touch with us. We will be pleased to advise you.

Of course we can also provide standard. Lm-therm offers solutions in the field ofcontrol cabinet heaters, control cabinet cooling units and Peltier control cabinet cooling units. In addition, at Lm-therm you will find filter fans, outlet filters, controllers, thermostats, hygrostats and control cabinet lights for almost every application. Discover our solution expertise for yourself.

Do you need advice on your thermal management? We will be pleased to help you.

Learn more

Our core competencies


Whether control cabinet heating with integrated thermostat, PTC control cabinet heating, control cabinet heating with fan or special solution: Lm-therm offers the perfect control cabinet climate control.
100% “Made in Germany”.


Peltier cabinet cooling units and control cabinet cooling units (indoor/outdoor) create an optimum climate and protect electronics from overheating. Our products also protect indoor and outdoor control cabinets.


Control cabinet fans prevent heat pockets and ensure greater operational reliability. Rely on the experience of Lm-therm and protect your electronics with the right filter fan, roof fan or outlet filter.


Control the climate in the control cabinet with the control cabinet thermostats and hygrostats from Lm-therm and use them to control control control cabinet heaters or control cabinet cooling units. We offer the right solutions for you!

Explosion protection

Ensure the operational safety of control systems and electrical devices in potentially explosive atmospheres with us and rely on the Ex heaters and Ex controllers from Lm-therm. We manufacture up to 400 W Ex control cabinet heaters in Zone 1/21!


Perfect light distribution, energy efficiency and flexible mounting are just some of the advantages of our lights. Switch cabinet lights from 400 lm to 700 lm are available as well as lights with and without motion detectors.

Cable technology

Our cable production for stranded wires, cables and cable harnesses is possible both in customized individual pieces and small series as well as in large series. Conductor cross-sections of 0.14 mm²-195 mm² are no problem for our production machines.

Assembly of components

We are your partner for component assembly, including logistics. Use us as an extended workbench and rely on our expertise as experts in the assembly of components. Reliable, flexible and high-quality – Lm-therm.

We are your specialists for customized control cabinet climate control. We have developed our online calculation tool to give you the opportunity to quickly obtain information about the control cabinet climate control you require.

You can also take advantage of our technical consulting in the field of thermal management. Our enclosure climate control experts will be glad to assist you here, especially in the area of special solutions for control cabinet heaters and Peltier cooling units.

Where standard is no longer a solution, we come into play. We develop and supply your control cabinet air conditioning according to your individual requirements. We offer you customized solutions and special constructions for enclosure heating and Peltier cooling solutions.

Thanks to our many years of experience, we are able to meet your special requirements in the field of control cabinet air conditioning – especially for control cabinet heaters and Peltier cooling units. Take advantage of our decades of experience. We will be glad to advise you.

Why Lm-therm?

A one-stop shop

All the required components of industrial climatisation for the areas of heating, cooling, ventilation and controlling from one source, including our own cable production and assembly of components!

Partnership and quality

Our goal is long-term partnership with our customers that is shaped by trust. We have been ISO 9001 certified since 2001. We aspire to durable products of high quality.

Competent advice

Together we analyse the problem and work out a perfect solution. We offer you advice and support you every step of the way. Whether the solutions are standard or customised, we can do it!


With our know-how and our own production, we can respond flexibly to customer needs. From lot size 1 to serial production, even where delivery times are critical.

Special solutions

Lm-therm is a specialist in customized control cabinet air conditioning. With more than 25 years of experience, we are able to develop and successfully implement individual solutions for enclosure climate control.


You can reach us by phone at +49 8543 6246 030 from Monday to Thursday from 8:00 a.m. to 5:00 p.m. and Fridays until 1:00 p.m.


We provide you with catalogues, brochures, technical documents and other useful materials in our downloads section.