Can you put too much inhibitor into a central heating system?

Can you put too much inhibitor into a central heating system?

Can You Add Too Much Inhibitor? The simple answer is no. You can never add too much inhibitor to your central heating system and dosing it up cannot cause any damage. Adding more inhibitor is only a good thing for your system as it will provide even more protection.

Why is my header tank full of sludge?

REASON: When your system expands, it pumps the expanded water into the header tank. This water will be hot and contain the sludge in the system. You may also consider turning down the pump setting from 111 to 11.

Why is the header tank overflowing?

The most common cause of an overflowing header tank is a fault with the float mechanism, which may not be rising to the correct level and therefore not stopping the supply of water to the tank. This causes it to overflow through the outlet pipe (causing that cascade of water!).

How long does inhibitor last in a heating system?

In an optimally running system you would top up your inhibitor every year, which could potentially keep your system clean and serene for 8-10 years.

How often should I add radiator inhibitor?

once a year
Central heating inhibitor will need to be changed once a year or so. It will break down over time, meaning minerals and rust build up once more. This means regulating your system’s inhibitor intake ensuring it runs steadily and consistently. You should always top up the inhibitor every time your system is drained.

How do you unblock a vented heating system?

A steel draw tape is brilliant for clearing blockages in pipes. You could try clearing a section at a time,remove radiator,connect hose to either lockshield or trv end & run to outside drain,then flush that section,repeating process around the house, also take radiators outside & flush out with hose.

How do you backfill a central heating system?

How to refill a central heating system efficiently

  1. Drain out the water. The first thing to do is to drain all the water out of your system.
  2. Close all bleed & drain valves. At this point, you will be ready to refill your central heating system.
  3. Bleed out the air from your rads.
  4. Switch on the boiler & check for leaks.

How do you clean a header tank?


  1. Turn water off, and drain tank either by pumping the water out, or draining down the heating system just enough to empty the tank.
  2. Clean all the sludge.
  3. First put inhibitor in the tank, then fill the rest with water.

How do I clean the header on my central heating tank?

How to use it:

  1. Step 1: Turn off the boiler, mains water supply and drain down the system.
  2. Step 2: Locate the central heating expansion tank and feed.
  3. Step 3: Add Everbuild P11 Central Heating System Cleanser to the expansion tank.
  4. Step 4: Turn on mains water supply, refill the system and restart the boiler.

Why is my overflow pipe outside dripping?

Overflow pipe dripping outside So, in summary, if you see an overflow pipe leaking outside, the likely cause is an overflowing toilet cistern, cold water or central heating feed and expansion tank. Or it could be your boiler overflow pipe dripping due to a faulty combination boiler.

How do I stop my expansion tank overflowing?

High water feed pressure When the pressure of the water flowing into the tank is too high, the tank will fill up faster than the water is being drained from it, leading to an overflow. Although this issue is rare, it is a serious one and can be fixed by turning the water flow down using the isolation valve.

Begin typing your search term above and press enter to search. Press ESC to cancel.

Back To Top