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TECHNOTHERM Frost Guard

Series FW 501 frost guard for basements/conservatories

The TECHNOTHERM FW 501 frost guard is a small electric convection heater for frost protection and light temperature control. A heating element warms the air inside the unit; it rises out at the top as warm air, while cooler air flows in from below. The integrated room thermostat measures the temperature and automatically switches the heater on and off between about 5 and 16 °C. This keeps the room frost-free without constantly heating. Overheat protection switches the unit off if the temperature is too high and back on again after it cools down.

High-quality technology – developed and manufactured in-house by TECHNOTHERM in Germany.

Safe and EU-compliant: Our systems meet all European safety and environmental requirements.

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Reliably protects small rooms from frost

Ideal for basements, guest WC, storage rooms, conservatory, or overwintering plants up to approx. 15 m³.

Simply plug in and let it run

Plug into the socket, set the desired temperature on the rotary thermostat, and the frost guard regulates automatically. No maintenance, no chimney, no pipe system.

Safe and compact

Overheat protection, drip-water protection IP21, and metal housing, plus a handy format and only about 1 kg in weight. Fits discreetly on the wall.

Effective frost protection

Reliably keeps rooms up to approx. 15 m³ frost-free and ensures stable basic temperature control.

Convection heat

The air-guided heating element generates gentle, rising warm air—ideal for small utility rooms, basements, or storage rooms.

Integrated thermostat

Automatic control in the range of approx. 5–16 °C—prevents unnecessary energy consumption and protects against frost damage.

High safety

With integrated overheat protection and automatic restart for safe continuous operation.

Robust construction

500 W output in a durable metal/stainless-steel housing—ideal for demanding environments.

Drip-water protection IP21

Suitable for damp rooms such as basements or unheated utility rooms.

Compact & flexible to install

Space-saving design, suitable for wall mounting and includes a safety plug—ready for immediate use.

Technical Data

Model	Performance	Dimensions (W x H x D)	weight [approx.]	Order number	Inquire
Frost Guard 500	0.5 kW	240 x 240 x 105 mm	1 kg	427000501	Inquire now

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installed. planned. invested.

Downloads

All information, such as installation and operating instructions as well as data sheets, can be found in our download area.

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Inquire about Product

	Modell	Leistung	Abmessung B x H x T	Gewicht [ca.]	Bestellnummer
Auswahl: Frost Guard 500	Frost Guard 500	0.5 kW	240 x 240 x 105 mm	1 kg	427000501

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TECHNOTHERM Frost Guard

Reliably protects small rooms from frost

Simply plug in and let it run

Safe and compact

Effective frost protection

Convection heat

Integrated thermostat

High safety

Robust construction

Drip-water protection IP21

Compact & flexible to install

Technical Data

More Products

TECHNOTHERM Church Pew Heating KBH

TECHNOTHERM Combination Heater CVS E RT

TECHNOTHERM Combination Heater CPH E RT

TECHNOTHERM Combination Heater CHM RF

Electric Heating, simply better

installed. planned. invested.

Downloads

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Space to insert a question?

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Inquire about Product

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