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Sep 30, 2021
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London
Member Type
DIY or Homeowner
Hi All,

I am getting a new Central heating system installed and looking for advice on the best design. The heating system will consist of the following components:

  • System Boiler.
  • Megaflo.
  • 2 Zone Underfloor heating.
  • 15 Radiators.

I have narrowed it to the Heatmiser Neo stat system or Honeywell Evohome, however open to suggestions.

As a minimum I am looking at 6 heating zones as below:

  • Two underfloor heating zones.
  • Two Upstairs zones, 1 for Bathrooms/ensuites and 1 for bedrooms.
  • Two Ground floor zones, 1 for Living Area /study and 1 for Bathrooms.

If I go with a Heatmiser system, then both UFH and central heating will be connected to Manifold and it will be a 6 Zone star circuit. I think in each central heating star circuit there will be a ring circuit. I will then be able to control each zone using a Neostat-v2 Thermostat.

If I go with the Honeywell Evohome then I think it will be a traditional ring system for central heating (may be divided into 2 zones for downstairs and upstairs) and manifold for UFH. I can then use the Honeywell smart TRV’s to control each radiator.

Now with Heatmiser, I think there will be increased meterage of pipes (I am using copper ) and I am fixed to 6 zones. I can go full star circuit and put each radiator in its zone but then it will be a substantial increase in meterage of pipes. However, it will be a modern system and also the cost of the Heatmiser system itself is not as high.

With Honeywell there is no increased meterage of pipes, Cost of Honeywell Evohome is Higher than the Heatmiser but gives the option to put each radiator in its zone. i.e. I can have more granular control of the heating system. With Evohome I can start small and then increase the smart TRV’s as I learn and start using the system.

Now I am not a heating expert or plumber. I have just gone through several articles to gather this knowledge. I will appreciate some advice from the veterans of this field.
 

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