How to Drain & Refill Home Radiators

Written by steve smith
  • Share
  • Tweet
  • Share
  • Email

Home radiators provide great heat on cold winter days, but they have to be maintained in order to run properly. A home radiator should be flushed and refilled about once a year to keep it running as efficiently as possible.

Skill level:

Other People Are Reading

Things you need

  • Hose
  • Basic tools

Show MoreHide


  1. 1

    First, to flush a radiator, turn off the entire heating system and shut the water flow to the radiator from the boiler.

  2. 2

    Attach a hose or draining pipe to the heating unit's boiler and run it outside or to a large drainage area.

  3. 3

    Open the air vent on the radiator to release the pressure. Then drain the entire unit by opening up the heating boiler's system valve. Let the water flow into a drain until empty.

  4. 4

    To refill the radiator or flush it, open up the water feed valve and then fill the unit with water. To flush, let the water run out of the flush valve until the water comes out completely clean.

  5. 5

    To fill the boiler, close the flush valve on the radiator and let the unit fill up.

Don't Miss

  • All types
  • Articles
  • Slideshows
  • Videos
  • Most relevant
  • Most popular
  • Most recent

No articles available

No slideshows available

No videos available

By using the site, you consent to the use of cookies. For more information, please see our Cookie policy.