Where Should a Central Heating Thermostat Be Placed?

Your central heating thermostat placement has a bigger impact on your central-heating system than most homeowners realise. Put it in the wrong spot and your boiler can run longer than necessary, radiators can heat unevenly, and rooms can feel colder or warmer than they should.

At Boilers2go, we often see perfectly good heating systems working inefficiently simply because the thermostat is in the wrong location.

This guide explains where a thermostat should go in a typical UK home, what to avoid, and how placement changes with smart thermostats and zoning.

The golden rules of thermostat placement

Most heating engineers follow a few simple principles when deciding where a thermostat should be installed.

The thermostat should be:

• mounted on an internal wall

• positioned around 1.5 metres above the floor

• placed away from radiators, windows, and draughts

• located where it reflects the average temperature of the home

• installed in a regularly used room

These guidelines help the thermostat measure room temperature accurately so the boiler and radiators respond correctly.

Best thermostat locations in a typical UK home

Different homes suit different thermostat locations, but some areas consistently work better than others.

Living room interior wall (best for most homes)

For many UK households, the living room interior wall is the most practical thermostat location.

Because it’s usually the most-used room in the home, it reflects real comfort levels better than quieter spaces. Warm air circulates naturally through the house from this area, helping the heating system respond appropriately.

This location works especially well in open-plan homes, family houses, and radiator-based central-heating systems.

The only thing to watch for is furniture blocking airflow or placing the thermostat too close to a TV or radiator.

Hallway (traditional central location)

The hallway thermostat is the traditional choice in many UK homes, particularly where wiring already exists.

Because hallways sit between rooms, they often provide a balanced average temperature across the house. This can help prevent one room overheating while others remain cold.

However, hallways can also be affected by front-door draughts or lower usage, which sometimes makes the heating feel less comfortable in living spaces.

Hallway placement still works well in two-storey terraced homes or smaller properties.

Dining room or kitchen-diner (modern layouts)

In newer homes with open-plan layouts, the dining area or kitchen-diner can be a good thermostat location.

These spaces tend to sit centrally in the home and are used regularly throughout the day. The key is keeping the thermostat away from ovens, cookers, and direct sunlight, which can cause inaccurate readings.

This location is often suitable in new-build homes or open-plan renovations.

Places to avoid putting a thermostat

Some locations almost always cause inaccurate temperature readings and inefficient heating.

Common problem spots include:

• directly above or near a radiator

• on an external wall

• in direct sunlight

• inside kitchens near cooking appliances

• at the top of the stairs

• next to doors or draughty areas

These locations can cause the thermostat to misread room temperature, which makes the boiler cycle incorrectly and the heating feel inconsistent.

Smart thermostat placement

Smart thermostats give more flexibility because many models are wireless or use radiator-level temperature control.

Systems like tado°, Nest, and Hive allow the main thermostat to be placed in the room that matters most, usually the living room, while radiator valves or sensors handle temperature differences elsewhere in the home.

In these setups, the thermostat often acts as a comfort reference point rather than the sole temperature controller.

That’s why living-room placement works particularly well with smart-heating systems.

Single-storey vs two-storey homes

Thermostat placement can also depend on the layout of the home.

In bungalows or single-storey homes, placing the thermostat in the living room usually works best.

In two-storey homes, a hallway thermostat can still work well, although many households now combine a living-room thermostat with thermostatic radiator valves (TRVs) upstairs to balance temperatures.

Because heat naturally rises, upstairs rooms often need less heating control than downstairs living areas.

Boilers2go installation advice

In most radiator-based heating systems, placing the thermostat in the main living area gives the best balance between comfort and efficiency.

For underfloor heating, thermostats are often placed slightly lower on the wall and positioned centrally to reflect floor temperature more evenly.

When upgrading to a smart thermostat, the receiver usually sits near the boiler while the thermostat can be positioned in the most practical room for comfort.

If replacing an older wired thermostat, installers sometimes reuse existing wiring in the hallway unless moving the thermostat significantly improves heating control.

The bottom line

For most UK homes, the best thermostat location is:

An internal wall in the main living area, about 1.5 metres above the floor.

This usually gives the most accurate temperature reading and helps the boiler, radiators, and central-heating system run efficiently.

Hallways can still work well, but comfort-focused placement in a living space is often the better choice — especially with modern heating controls.