How to Test for Leaks in a Floor Furnace

With regular maintenance, you can detect floor furnace leaks before they become a major and costly problem. Even a small, slow leak will damage the particle board subflooring and quickly cause decay. Also, leaking water can also damage carpeting, permanently stain walls and cause a dangerous fire hazard. Read on to learn how to regularly inspect and maintain your floor furnace to prevent expensive damage.

Tools and Materials
  • Hose
  • Bucket
  • Flashlight
  • Gloves
  • Pipe wrench
Step 1 – Check for Leaks

Check for leaks 2 to 3 times each year. Start from inspecting the tank to make sure that all its connections are properly linked and safe. If you see any fittings that are rusty or show signs of decay, replace them with new parts. Don’t forget to look under the tank for rust, which is an indicative of a leak. Search around the areas that will be directly affected and where the water will most likely go through. This will confirm the source of the leak.

Step 2 – Test the Valve Pressure

Annually test the pressure-relief valve to make sure that it is working. The main role of the pressure valve is to release pressure once the tanks overheat. Excessively hot water can also cause the valve to leak so its important to test the temperature pressure relief valve.

Make sure to turn off the gas or electricity before testing the valve if it’s working. Pull the lever and release the water unto the bucket. If the valve is indeed working, you will hear the pressure going through it or you will see the water out the valve otherwise replace it if it’s not working.

Step 3 – Drain the Tank

Schedule to drain the tank completely twice a year. Sediments that stay at the bottom can cause corrosion on the tank and will cause leaks. Make sure to turn off the electricity or gas before draining the tank. Attach the hose unto the draining valve located beneath the heater and release the water on a safe area.

Open the pressure-relief valve after the draining valve. Once complete, close both pressure and draining valve, and turn on the power source.

You may also want to look the insides of the tank and check it for any rust staying on its bottom or a microscopic hole could exist inside which could not be seen by the naked eye on the outside. If it does then you will most likely need to replace the water heater.