A sweating toilet bowl can cause mildew and mold growth in your bathroom. Toilet bowls sweat because the air around the toilet is considerably warmer than the temperature of the toilet water. This creates condensation and causes the toilet to sweat.

You can purchase an anti-sweat toilet kit to insulate the tank and reduce condensation. Home Depot carries it for a reasonable price. To install, you completely empty the water from the tank, then use a hairdryer to ensure that the sides are absolutely dry. Cut the foam and apply adhesive. Let it sit for 6 – 8 hours and it will be ready to be refilled and useable. The kits are inexpensive, easy to install, and are very effective.

The second option is to install a mixer valver which uses both hot and cold water to “mix” – you can adjust the temp as you want until it stops the condensation issue. Depending on how far away the hot water heater is, it may take quite awhile for the hot water to get there. In some cases, just running a hot water line is sufficient. This method works well but you may have to hire a plumber for the installation.

Lastly and more expensive, is to replace the guts of the toilet and replace with a “pressure assisted” unit, like Flushmate – 1 gallon per flush. This option is a water saver and works very well – no tank sweating at all.

You can always opt for a total toilet replacement – Pressure Assisted Toilet. The cost is around $300 on up, but well worth it. This toilet has a pressure tank in it inside the water tank.

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