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How to Zone Your Heating
for Comfort & Savings

A zoned heating system moves away from the old fashioned "one thermostat fits all" approach and allows you to set different temperatures in different rooms based on your schedule.

You can program the kitchen to be warm for breakfast, but let the bedrooms cool down once everyone has left for the day. If you don't use your living room until after your evening meal, have it heat up for your arrival at 7pm.

This guide explains exactly how to do it.

Smart heating zoning control

The Benefits of Multi Zone Heating

The Golden Rule

You don't need to pay to heat a spare bedroom that nobody has stepped foot in for 3 weeks. Creating distinct central heating zones lets you heat the people, not the empty space.

There's little point in heating a spare bedroom that's rarely used; it simply needs to be 16°C to ensure the room doesn't get damp. If someone's coming over to stay - simply turn it up.

You can apply this process to your whole home and personalise rooms for your family. Some family members might prefer a cooler room for sleeping, so you can set their room to be a cooler 18°C for 11pm rather than wasting energy heating the room up unnecessarily.

Option 1: TRVs

Thermostatic Radiator Valves (Manual)

These are the standard numbered dials found on the side of most modern radiators. They are the simplest way to introduce basic zoned heating to your home.

  • How they work: They sense the air temperature around them and automatically restrict water flow into the radiator once the room reaches a set level.
  • Pros: Cheap, easy to install, stops rooms overheating.
  • Cons: They cannot follow a schedule (e.g. they can't turn down automatically when you leave for work) and cannot be controlled via a phone.
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Option 2: Smart

Smart Valves (Automated)

Smart valves replace your standard TRV head. They connect to your Wi-Fi and allow you to set individual schedules for every single room from your phone.

  • How they work: You replace the manual head with a battery-powered smart head. You can then say "Living Room 21°C at 6pm" via an app.
  • Pros: Complete control. Create schedules for individual rooms (e.g. Kitchen warm only in the morning). Can be controlled via Alexa/Google Assistant.
  • Cons: Higher upfront cost than manual valves.
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Option 3: Electric

Electric Radiators (Independent)

These are the ultimate in zoned heating because they work completely independently from your central boiler.

  • How they work: Each radiator has its own built-in thermostat and power supply. It doesn't need the boiler to be on to work.
  • Perfect For: Bathrooms (dry towels in summer without heating the house), home offices, or conservatories that you only use occasionally.
  • Pros: 100% efficient at point of use, precise digital thermostat built-in, no pipes required.
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How to get started

Ready to create your zoned heating system? Here is a simple checklist to get you going:

  • Audit your usage: Walk through your home and list when each room is actually used. (e.g., Bedrooms: 10pm-7am, Kitchen: 7am-9am & 5pm-8pm).
  • Check your valves: Look at your current radiators. If they have a dial with numbers (1-5), you already have TRVs! You can start zoning immediately by turning down unused rooms to '1' or 'Frost protection'.
  • Upgrade key rooms: Consider swapping the manual valve in your main living area for a Smart Valve first to test the benefits of scheduling.
  • Set the baseline: Keep unused rooms (like spare bedrooms) at a minimum of 16°C to prevent damp, rather than turning them off completely.
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Hints & Tips

Don't turn it off completely

It is generally more efficient to lower the temperature of a room (setback temperature) rather than letting it go completely cold. Re-heating a freezing cold room takes a lot of energy. Try setting "off" periods to 15-16°C instead.

Keep doors closed

Zoning only works if you keep the heat in the right place! If you are heating the living room but not the hallway, keep the living room door shut. Otherwise, your radiator will work overtime trying to heat the hallway too.

The Bedroom Strategy

Most people sleep better in a cooler room (around 18°C). Multi zone heating allows you to have a cosy warm living room (21°C) in the evening while your bedroom remains cool and comfortable for sleep, saving you money every single night.

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