🔧 How to Install a Radiator: A Step-by-Step Guide for DIYers

Installing a radiator might sound intimidating, but with the right tools and guidance, it’s a project that many DIY enthusiasts can tackle. Whether you're replacing an old radiator or fitting a new one, follow this easy radiator installation guide to get it done safely and efficiently.

🧰 Tools & Materials You’ll Need:

• New radiator

• Adjustable spanner

• Pipe wrench

• Radiator valves (TRV or manual)

• PTFE tape

• Pipe cutter (if modifying pipework)

• Radiator brackets

• Spirit level

• Drill and wall plugs

• Bucket and old towels

🛠️ Step 1: Turn Off the Heating & Drain the System

Before starting, make sure your heating is off and your system is cool. Locate the drain valve (usually near the boiler) and release the water from the system. Use a bucket to catch the water and prevent spills.

📏 Step 2: Measure and Mark

Hold the new radiator against the wall and use a spirit level to mark where the brackets will go. Make sure it’s level and sits high enough off the floor for airflow and easy cleaning.

🔩 Step 3: Fit the Brackets

Drill into the marked positions, insert wall plugs, and screw the radiator brackets in securely. Double-check that they’re level—this ensures your radiator won’t lean or strain the pipework.

🔧 Step 4: Attach the Radiator Valves

Wrap PTFE tape around the valve threads to ensure a watertight seal. Screw them into the radiator, taking care not to overtighten. Connect the valves to the existing pipework. If the pipe layout doesn’t match, you may need to cut and adjust the piping.

🧲 Step 5: Hang the Radiator

Carefully lift the radiator onto the brackets. Make sure it clicks or slots into place securely.

💧 Step 6: Refill & Bleed the System

Close the drain valve and refill your central heating system via the boiler. Once filled, bleed the radiator to release trapped air using a radiator key. You’ll hear a hiss as the air escapes—close the valve when water starts to come out.

✅ Step 7: Test Your Radiator

Turn on the heating and check for leaks around the valves and pipework. Your radiator should start to warm up evenly. If not, you may need to bleed it again or balance the system.

🛡️ Safety Tips:

• Always wear protective gloves and eyewear when cutting or drilling.

• If in doubt, call a professional—especially when dealing with gas lines or major pipework.

• Dispose of old radiators and water waste responsibly.

📌 Final Thoughts:

Installing a radiator can be a satisfying project that adds warmth and efficiency to your home. Make sure to choose the right size and style with the help of our radiator sizing guide and radiator design trends posts.

Need help choosing a radiator? Check out our radiator buying guide for expert tips!