Guide complet : préparer son installation de chauffage pour l’hiver

Complete guide: preparing your heating system for winter

Complete Guide: Preparing Your Heating System for Winter

Winter is approaching, and it's essential to prepare your heating system to ensure performance, energy savings, and daily comfort. In this article, Green Negoce explains how to perform a power flush, check your expansion vessel, bleed your radiators, control pressure, and treat the circuit water.

1. Power Flushing: The Foundation of Efficient Heating

Over time, circuits accumulate sludge, corrosion deposits, and scale. Regular power flushing helps restore hot water circulation and improve your efficiency.

Why Power Flush?

  • Radiators cold at the bottom
  • Black water during bleeding
  • Noisy or inefficient boiler
  • Unstable pressure

Power Flushing Methods

Chemical Power Flush: addition of cleaning product + rinsing.

Hydrodynamic Power Flush: powerful cleaning using specialized machine.

Magnetic Sludge Separator: essential to prevent sludge return.


2. Checking the Expansion Vessel

The expansion vessel stabilizes the pressure in your circuit. A faulty vessel can cause breakdowns, pressure variations, or safety shutdowns.

How to Check Your Vessel?

  1. Turn off the boiler
  2. Depressurize the circuit
  3. Check the air-side pressure of the vessel
  4. Compare to the recommended value: 0.8 to 1.2 bar

When to Replace It?

  • Valve that leaks water
  • Unstable pressure or pressure that regularly drops
  • Perforated diaphragm
  • Boiler that exceeds 2.5–3 bar

 

3. Bleeding Radiators: An Essential Step

Bleeding allows air trapped in the radiators to be released, which is responsible for heat loss and noise.

How to Bleed Correctly?

  1. Turn on the boiler for a few minutes then turn it off
  2. Open the bleed valve with a key
  3. Let the air escape until a clear stream of water appears
  4. Close the valve and adjust the boiler pressure

4. Pressure Control: The Final Touch

Incorrect pressure leads to inefficient heating. The ideal system pressure is generally between 1 and 1.5 bar.

If Pressure is Too Low

Fill the circuit via the filling valve.

If Pressure is Too High

Check the expansion vessel first.

5. Bonus: Heating Water Treatment

Treating the water helps reduce corrosion, scale, sludge, and extends the lifespan of your system.

Recommended Products:

  • Corrosion inhibitor
  • Sludge remover
  • Scale inhibitor
  • Biocide for underfloor heating

 

Conclusion: Prepare Your System Now

A well-maintained system before winter guarantees efficient, reliable, and economical heating. Green Negoce offers a complete range:

  • Expansion vessels
  • Sludge separators
  • Power flushing products
  • Water treatments
  • Boiler and radiator accessories

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