5 Signs Your Heater Core is Leaking

Replacing Your Heater Matrix

1. You will need: drill, foam padding, spanners or socket set.
2. Step One: Remove the Heater Box.
3. Step Two: Remove the Heater Matrix.
4. Step Three: Fit the New Heater Matrix.
5. Step Four: Replace the Heater Box.

The dashboard has to be completely removed to access the area where the heater matrix is located and, while the actual job of replacing the heater matrix isn’t particularly complicated for a competent mechanic, the whole task can take several hours.

1. Your Car Smells Sweet. You may notice a sweet smell from your vents.
2. Your car windows become foggy.
3. Your car is blowing cold air into the cabin.
4. Your car is devouring coolant.
5. Your car’s cabin is cold, but the engine is hot.

In water-cooled systems, the heater matrix works by taking hot water from your engine through a hose when you turn on your heating system. The ventilation fan forces air through the matrix. This then warms up the air before it makes its way into the cabin via a number of vents.

The heater matrix (in most cars) is typically buried within the dash/footwell area, requiring around five to six hours labour to remove and refit everything, so it’s an expensive job unfortunately.

Radweld is compatible with coolant. Just pour and go. It seals holes in radiators, hoses, and the heater matrix. It will treat systems up to 14L capacity.

No. Scientifically tested, K‑Seal will not cause any harm to your car or its engine, nor will it damage the pump. It simply does what it says on the bottle: seals holes in your coolant system and cracks in your head gasket with ease, without the risk of blockages.