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Boiler central heating return temperature?

330d · 2025-11-24 19:01:00

I have balanced my central heating system in my house. All the heaters are showing a temperature at the top between 55-60c. And at the bottom they are 10-12c temperature drop. Reading online this is what is recommended. My boiler outlet temperature is currently set to 70c. I know this is higher than what is recommended and…

Comments

Mutton_Geoff Posts: 4,071 Forumite

25 November 2025 at 9:36PM

12C drop was for older boilers. Check the manual for yours, if it's condensing, then more likely 20C.

If the return is hotter and you've balanced all the rads then there is a bypass somewhere. Either a direct link with valve on it or it's the HW coil in your HW cylinder?

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