How to top up pressure on a Vaillant combination boiler.

At Snug & Chill we specialize in diagnosing and repairing boiler pressure loss for residential clients. A drop in boiler pressure can lead to inefficient heating and hot water, and often indicates an underlying issue such as leaks, airlocks, or a faulty valve. Our expert technicians provide thorough inspections, identify the root cause of pressure loss, and offer reliable solutions to restore your system’s performance. Trust us to keep your heating system running smoothly so you can stay Snug this winter!

[@coffeeomilk2396]

Do you open the cold or the hot water

[@LeviDegroen]

The cold valve is on the right side.
The heating valve which allows the water into the heating system is on the left side.
If you leave the right valve on it will switch off the hot water to your taps.
Note never leave both valves on at the same time unless you’re topping up the pressure.
I hope this answers your question.