We currently are out of stock on the used Robertshaw and Invensys Mercury switches. We do have the used White Rodgers millivolt Mercury Flame Safety Switches that perform the same, but look slightly different - please call for info (1-519-858-8924).

The Mercury Flame Safety Switch is found in many older gas fireplaces made by Majestic/Insta-flame DV34, DV36, Empress, Heatn'Glo, Hunter, Napoleon, Hevac, Clare and others. Due to the hazards of Mercury, this part is no longer produced. 

This may be the most cost effective way to repair your fireplace for the sale of your house!

If you would like more specific details on applicable fireplace models, please call 519-858-8924.