My water heater is sweating badly what should i do?

heater shell could sweat from time to time ..
depends on installation /location /current climate and ambient temperatures
NO not normal
if water is near wiring or running down the side seams or bottom

This particular model of water heater is intended for under-counter use. That should not place it in an environment that is conducive to condensation. Water heaters are usually well insulated to prevent heat loss and as a side effect, condensation. If you have not had this problem before now, I would suspect a tiny leak somewhere rather than sweating. If you have always had this issue, then you may not be using the right product for the installation or may not have it in the proper temperature environment.

IF it is older (and the date should be on the label) they usually start leaking when they go bad. However, you need to make sure that it is not sweating from condensation.

Without seeing how the plumbing to your heater is piped, its hard to say.I would venture to say that the heater is ok, unless its very old, and you just have to repair the leaking pipe. If its plumbed in Copper, and you are not familiar with sweating a joint, then you may need a plumber, however if its Galvanized (iron), CPVC or Poly you could do it yourself. If you could e-mail me a picture or two, I could tell you exactly what to do. If its leaking bad, you need to shut the power off and turn the water off to the heater, should be a valve located in the cold water line near the heater, which will turn water off to heater but leave it on in the rest of the house.
Bud

Sounds like you have a bad thermostat. You can change the thermostat, but if the heater is more than 8 or 10 years old you might be better off to replace the entire heater. Thermostat replacement is easy:
1 turn off the gas 2 drain the heater 3 unscrew pilot, main burner, and thermocouple lines from bottom of thermostat. 4 unhook gas line from thermostat. 5 unscrew thermostat from heater tank. Use pipe sealer when you install new thermostat, and gas line fittings. burner and thermocouple lines seal on a taper seat and do not need sealer. after reassembly check for leaks with soapy water, not a match, light the pilot and turn up the temp. The heater may sweat quite a bit while it is heating up the first time, this is due to the cold water on the inside and the fire on the outside. some water may drip in the bottom of the heater and you might think you have a leak, but let it heat up completly, if the water is still dripping after the tank is hot then you need to find the leak.

If your water tank is leaking, is it dripping from above or actually leaking thru the bottom?. Can you find the source? Feel around and try to find wet spots above and around it. If it's not leaking from the water pipes or T&P valve, it's your tank leaking. You'd be wise to have it checked out in the morning, before it gets worse. Hopefully your catch pan has a pipe attached to divert water to the outside or to a sump pump or floor drain. Water heaters do sweat, but you can tell the difference if it continues to leak for several hours.

thats normall it just lets of presure when needed which will cause a little water

could be a pin hole leak some where on the tank and the insulation is absorbing it for now if it is older then 6 years and u havent replaced the anode rod or flushed the tank once a year you should probibly look to replace it