humidity our toilet tank is sweating buckets.  Looking for a quick Check to see if your flapper valve leaks. (Put food coloring in your tank.  It after a couple of hours without flushing the water in the bowl has begun to change color youReplace the flapper with a red 'Bulls Eye' model . -- jim)  If it leaks, the water will stay chilled in the tank.  There are also some insulating foam products to isolate the water from the tankHome Depot carries it for a reasonable price. I fixed my toilets with a $7 insulation kit sold at all homeYou just drain the tank, use a hairdryer to dry it, cut the foam and glue it in. In 8 hrs it's ready for use. You can save yourself considerable time by installing a hot water 'mixer' valve which is designed to solve just this problem. I tried the foam bit. It only lasted a couple of days, then the foamI had followed the directions very carefully. 'mixer' valve] will be more permanent.

I lived in a house that had already had one of those special mixerI had to run almost straight hot water to it, because it takes so long to get hot water through the line to the WC tank.  just got tired of paying the extra bucks for hot water and got one of those kits that go on the bottom outside of the tank which collects and drains the condensation off. I had the same problem, my tank sweated every winter.  swapped out toilets [for] about 200$.  This toilet has a pressure tank in it inside the water tank.   I solved the problem and got a nice toilet at the same time. The bathroom is the most humid place in the house because of takingDon't flush the toilet after taking a bath or shower. Try this and see if it works out OK. It is possible that the cold water going into the toilet tank while the air is moist in the bathroom is causing the tank to sweat. After a while the water in the tank should settle to the room temperature.

If you don't have a bathroom exhaust fan, maybe one should be installed to remove the moist air from the room. if you have a forced air heating system, and there is a register in the bathroom, open it wide and turn on the furnace fan to circulate the air out of the room. This should be done with the door partially open so that the air can escape from the room. It might not hurt to turn on the furnace also so that warm air can circulate through the bathroom and you will be fairly comfortable upon exiting the tub or shower. If you have a hot water baseboard heating system, then you will probably need an exhaust fan in the bathroom to exhaust the moist air. not circulate as rapidly over the fin tube system of a hot water heating system as it does with the forced air system. really quick fix is a two-piece terry toilet tank cover.   available in most stores--not even Bed, Bath and Beyond.  But you can but Montgomery Ward [I didn't know Montgomery Ward still existed --

Here are links to two more articles on this subject Tank to Bowl Kit for Mansfield Water-Saving Toilet Total Repair Kit with Dual Flush Valve Tub and Shower Trim Kit for Gerber Faucets PerforMAX Toilet Fill Valve and 3 in. Homes For Sale Wallace Pike Bristol Va Tub and Shower Rebuild Kit in Brushed Nickel for Price Pfister VerveParish T Shirts Lafayette LaNominal Compression Cross Handle Angle Stop Toilet Installation Kit in Oil Rubbed BronzeRhodesian Ridgeback Mix Puppies For Sale Florida Bath and Shower Splash Guard Kit in White (2-Piece) PerforMAX Toilet Fill Valve and Seal Kit Flapper Chain, Hook and Ring 3-Handle Valve Tub/Shower Rebuild Trim Kit for Sayco Faucets in Chrome

Windsor 3-Handle Valve and Handle Rebuild Kit 3 Valve Rebuild Kit for Tub and Shower with Chrome Handles for KOHLER Savoy Shower Valve Rebuild Kit Central Brass 3-Handle Tub and Shower Faucet Trim Kit in Chrome (Valve Not Included) Toilet Seat Hinges in White Old Style Rebuild Kit Fill Valve Installation Kit 3-Handle Tub/Shower Trim Kit for Price Pfister in Chrome A-41-A 1.6 GPF Closet Diaphragm Repair Kit 2 Valve Rebuild Kit for Tub and Shower with Chrome Handles for American StandardToilet Tank Liner Kit Store SKU # 1000514953 Toilet tank liner kit. Stops toilet tank sweating problems. Includes Styrofoam liner, five pre-cut sheets and one tube of liner adhesive. One year limited warranty. Call 1-800-465-6130 for details. Complete Toilet Repair Kit Fits 2 and 3-bolt tanks Fits all brands of toilets The Fluidmaster Complete Toilet Repair Kit lets you replace everything in your toilet tank at once.

This kit includes a 400A fill valve, an Adjust-A-Flush flapper, a flush valve, a tank lever, hardware and seals for your convenience. This complete toilet tank repair kit is for 1.6 Gal. per flush toilets. Contains a toilet flush valve with an adjustable water saving toilet flapper, a toilet fill valve, a chrome tank lever, and the bolts and gaskets for installation Chrome tank lever trims/bends to fit, no pre-measuring needed Flapper dials to adjust water volume for a custom flush This question is from Complete Toilet Repair Kit7 how to adjust water in tank This question is from Complete Toilet Repair Kit6 Is this normal that you have to keep HOLDING the knob for a complete FLUSH? My good old toilet flasher worked this way - you press the knob and go away.This one seems to be you press, HOLD (and watch and wait) until it's done, otherwise flush is not complete.Not sure but If that's how it's supposed to be then there's something wrong with them (or us)? This question is from Complete Toilet Repair Kit6 toilet, how can replace the sealant ruber ring at the bottom of the water tank, without breaking the plastic pipe that need to be removed