Will the systems ruin my kitchen and appliances if it goes off?

No. The wet chemical agent is a low pH solution that reacts with the cooking grease and the heat of a fire to go through a process called saponification (turns into a thick soap like foam) to starve a fire of oxygen.

Where the agent comes into contact with other appliances that are not on fire it remains liquid and can be quickly and easily cleaned away. Please see material data sheet here

It is worth noting that the clean up following a discharge of an Ansul system is much quicker, easier and less costly than dealing with a kitchen fire. Ansul systems can be recharged on site and our Maintenance team can offer response to call out times of 4 hours.