Drain Your Boiler to Heat Your Home Efficiently

Time: 1 - 1.5 hours

Your boiler had a rough few months. Time to show it some TLC, people. Draining your boiler once yearly clears out any mineral and sediment buildup that made a home there over the past few months. Trust us — you don’t want that stuff blocking heat flow to the water. So grab a wrench, a hose, and a bucket, and we’ll show you how to drain your boiler for more efficient heating.

What's in it for you?

Efficient heating
Lower costs

Drain Your Boiler to Heat Your Home Efficiently:

  1. Turn off your water supply and boiler. Go in the basement and find your main water valve — a handle on the water pipe connecting it to the outside water supply. Turn it to the left. Now, find your boiler control switch (also in the basement) and shut it off. Safety first, always.

  2. Drain residual water in the pipes. Run hot water in any sink or tub. When the water stops flowing, you’ve successfully decreased the pressure in your pipes.

  3. Connect a hose to the boiler drain valve. Look for a valve on the front side of the boiler tank near the bottom. Connect one end of a garden hose to it. The other end goes into a large bucket.

  4. Drain the boiler tank. Time to open your boiler drain valve and let the water flow until the tank is drained. Careful, it’s hot — you should probably wear gloves.

  5. Clean the boiler tank. Once the boiler tank is fully drained, turn the cold water back on so it circulates in your tank and stirs up lingering sediment. Turn it off again to decrease tank pressure and let the sediment drain. Repeat and repeat and repeat until no more sediment comes out of the hose.

  6. Congrats, you’re done. Close the drain valve, remove the hose and switch the water supply back on. It will take awhile for the water to heat up again, but your boiler will heat your home more efficiently — until next year when you’ll need to drain your boiler again.

Pro Tip: Add some water softener to your water supply. It’ll prevent future sediment and mineral buildup and keep your boiler heating efficiently for much longer.

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