Removing a radiator is a manageable DIY task if done carefully. Whether you’re decorating, replacing an old unit, or fixing a leak, this step‑by‑step guide walks you through the process safely and cleanly.
Tools & Materials You’ll Need
Before you begin, gather the following:
- Adjustable spanner or radiator key
- Bucket or bowl
- Old towels or rags
- Screwdriver
- PTFE tape (for refitting later)
- Dust sheets or plastic cover
- Optional: Hose pipe (for outdoor draining)
Important Safety Checks Before You Start
Turn Off the Heating System
- Switch off your boiler or central heating system
- Allow the radiator to cool completely (hot water can cause burns)
Protect Your Floor
- Lay down towels or dust sheets
- Radiator water is usually dirty and can stain carpets or flooring
Step‑by‑Step: How to Remove a Radiator
Step 1: Turn Off the Radiator Valves
Radiators usually have two valves:
- Thermostatic Radiator Valve (TRV): Turn fully clockwise
- Lockshield Valve: Remove the plastic cap and turn clockwise using a spanner
⚠️ Count the number of turns on the lockshield valve so you can reset it later.
Step 2: Drain the Radiator
- Place a bucket under one valve
- Use a spanner to slowly loosen the nut
- Let the water drain out completely
💡 Tip: Tilting the radiator slightly helps remove trapped water.
Step 3: Fully Disconnect the Valves
Once drained:
- Unscrew both valve nuts completely
- Keep towels ready for any leftover water
If possible, cap the valves to prevent drips.
Step 4: Lift the Radiator Off the Wall Brackets
- Radiators are heavy—get help if needed
- Lift straight up to unhook it from the brackets
- Carefully carry it outside or to a safe area
What to Do After Removing the Radiator
Seal the Valves
- Use valve caps or plastic bags with tape
- Prevent leaks or pressure loss
Clean or Decorate
Now you can:
- Paint or wallpaper behind the radiator
- Clean sludge from the radiator
- Replace with a new unit
Common Mistakes to Avoid
- ❌ Not turning off the boiler
- ❌ Forgetting to count lockshield turns
- ❌ Underestimating how heavy radiators are
- ❌ Skipping floor protection
Can You Remove a Radiator Without Draining the System?
Yes—only if both valves fully isolate the radiator. In older systems, valves may not seal perfectly, so be prepared for water flow.
When Should You Call a Professional?
Consider a plumber if:
- Valves won’t close
- Water keeps flowing
- Pipes are corroded
- You’re removing multiple radiators
Final Thoughts
Removing a radiator is straightforward with the right preparation and patience. Take your time, protect your space, and don’t rush the draining process. If anything feels uncertain, it’s always safer to consult a professional.
Ready to refit your radiator or install a new one? Make sure to bleed it properly and check for leaks once the system is back on.