Will my house burn down if i water cool..?

A house fire wouldn't be very likely. Any of the connections, lines, manifolds, the rad or even the sump could drip, squirt or spray. You can test it without your PC running to reduce risks and check it regularly.

if it leaked it would only ruin your computer hardware that would be it really it might trip a fuse or something but thats all really (setup water cooling on a old pc before doing it on your main computer then leave the computer powered on for a few hours maybe a day just so it can settle)

warning !!!!!

Don't attempt to dump mineral oil in your electronics just a friendly warning they will still short out got an old keyboard your not partial to give it a try :) for anyone who don't know or is not old enough for years on end they used Oils in electric power transformers in fact many of these types of transformer are out there in use today any how these transformer are also a huge source of the PCB pollution in our environment today , they used the oil for cooling how ever when the transformer leaked poof shorted out the transformers ..

burnt oil from these transformers which it use to be legal just to dump full of this oil after it had heated and cooled for year and burnt as the transformer rotted and started to leak the oils got in to the ground and the water table lakes rivers and such ..

even WD40 will cause electronics to short out it will displace water and is designed to evaporate quickly how rever if sparyed on a powered item it will short it out ..

facts about mineral oil not only will it conduct electric VOltage, it is not effeceint for cooling ..

Facts about mineral oil and electronics it will destory electronic and if you decided to cool with it you would need to figure out hows to proof the computer hard drive power supply CPU and other parts from the oil also you will need to find away to cool the oil as it is poor at conducting the heat away .. mineral oil is a corosive , and the vicosity of the oil would mess up laser reader such as DVD and cd drives recorders..

this from some one with over 50 year XP in the eletronic feild still very much active today ..

oil would liturally hold heat in the computer it is not only a conductor but has insolateing properties ..

your house wouldnt burn down even in the most extreme circumstances.

if you are worried about the system leaking, measure up all the tubes and connect it all together outside the case, fill the system and let it run for a few days, if there are any leaks you can fix them.

if there was a leak of the system, the coolant is usually none conductive so will not short out the components it comes into contact with.

if you used a conductive coolant and it leaked and it shorted out the components it came into contact with, either the PSU would short out and fail, the fuse in the PSU would fail and break the connection or your circuit breaker in your house would trip.

the PSU would also be above the tubes, so the only time there would be a fire hazard (if there was one) is when you turn it on creating a flow of electricity, if there was a short you could simply pull the plug on it to prevent a fire.