Mirror-Heaters.co.uk - suppliers of mirror heaters for a perfect fog free mirror

Frequently Asked Questions

Q. Why is My Mirror Foggy?

The fog on the bathroom mirror is caused by condensation. Falling air temperatures cause condensation, because warm air can hold more moisture than cold air.

When warm air in the bathroom is heated by the shower to temperatures as much as 100 degrees Fahrenheit, the air becomes saturated with moisture. When this saturated hot air comes in contact with the bathroom mirror, which may be as much as 30 degrees Fahrenheit less than the air temperature, the moisture begins to come out of the air and be deposited on the mirror surface. The clouds of steam in your bathroom are basically raining on your mirror.

Installing a mirror heater will keep the temperature of the mirror high enough to prevent condensation.

Q. How Easy is it to Fit a Mirror Heater?

Mirror demisters are simply stuck to the back of any standard or safety-backed mirror.

The mirror is normally connected to the existing room lighting system or extraction fan circuit. Just turn on your fan or switch on your light and your mirror heater automatically warms up to keep your mirror clear.

Q. How Long Will It Take For My Mirror To Demist?

Once switched on, a mirror heater will usually heat the mirror enought to prevent steaming up within 2 to 3 minutes.


Q. Can I Fit A Mirror Demister to Any Mirror?

Yes, all glass mirrors can be used in conjunction our mirror demister pad, glass temperature will reach no more than about 35 degrees C. Pads can be stuck directly to back of mirror glass or to wall.


Q. Are Mirror Demisters Suitable for Large Mirrors?

Yes, any size mirror can be fog free with our mirror heaters.

For very large mirrors a number of pads can be linked together for maximum coverage.


Q. What Size Mirror Heater Pad Should I Use?

Mirror heating pads only need cover the main viewing area of your mirror.

Always choose a pad size to allow a minimum of 100mm as unheated area around the mirror edges, this is to ensure sufficient glass area to bond the mirror to the wall if this is to be your fixing method.

Q. Can I Fit A Mirror Heater Pad In Any Electrical Zone?

Yes. Our mirror heating pads are double insulated (Electrical Class 11) so are suitable for all bathroom zones.


Q. Do I Need An Electrician To Connect My Mirror Demister?

It is not strictly necessary to have your mirror heater installed by an electrician, but always consult a qualified person if in any doubt regarding electrical circuitry or wiring regulations.


Q. Can I Cut a Mirror Demister Pad?

The mirror demister pad must not be cut or pierced as this may damage the insulation making it unsafe.

For advice on selecting the correct size of mirror demister please follow this link.

Q. Are Mirror Heaters Guaranteed?

Mirror Heaters are Guaranteed for a period of Ten Years from date of invoice, please retain your proof of purchase as you may require this in the event of a claim.

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