{"id":497,"date":"2026-02-12T08:56:04","date_gmt":"2026-02-12T08:56:04","guid":{"rendered":"https:\/\/mywarmhome.co.uk\/newsite\/?page_id=497"},"modified":"2026-05-07T06:56:37","modified_gmt":"2026-05-07T06:56:37","slug":"thermostats","status":"publish","type":"page","link":"https:\/\/mywarmhome.co.uk\/newsite\/thermostats\/","title":{"rendered":"Thermostats"},"content":{"rendered":"\n
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Mywarm<\/p>\n\n\n\n

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Thermostats control the temperature<\/p>\n\n\n\n

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Heating systems<\/strong> make warmth.
Insulation<\/strong> keeps it.
Controls<\/strong> decide how wisely it\u2019s used.<\/h1>\n\n\n\n

Clear, independent<\/strong> advice for a efficient home.<\/h2>\n\n\n\n
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Heating Control Basics.<\/h2>\n\n\n\n

Controls come in various forms. <\/em><\/p>\n\n\n\n

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In this section, we focus on the controls used in homes to manage heating systems. Modern controls have evolved beyond simple on\/off switches, incorporating smart features and connectivity for greater efficiency and convenience.
Gas boilers have to be installed to a standard called boiler plus, which sets out certain regulations to improve efficiency.
Boiler plus document here<\/a><\/p>\n\n\n\n

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Controls on a central heating system can be standard on and off, on and off with temperature limits (thermostats or interlocks<\/a>), zone controls for each part of the house and smart controls on apps.<\/p>\n\n\n\n\n

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Part L<\/a> states.<\/h2>\n\n\n\n
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Each room will be fitted with a thermostat controller, this means adding TRVs to every radiator. Except those in whichever room houses the central thermostat.<\/p>\n<\/blockquote>\n<\/div>\n<\/div>\n\n\n\n\n

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Every heating system requires a way to monitor the ambient temperature, this is done using room thermostats.
While the thermostat doesn\u2019t directly control the radiators, it signals the boiler when the desired temperature has been reached, prompting it to turn off or reduce output. <\/p>\n\n\n\n

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When the temperature drops below the set limit, the boiler switches back on to maintain the desired warmth.
This cycle continues automatically. <\/p>\n\n\n\n

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In addition to the room thermostat, thermostatic radiator valves (TRVs) are installed on radiators to regulate their individual temperatures. Once a radiator reaches its set level (typically between 1 and 5), the TRV closes to prevent overheating. Different rooms can have different TRV settings based on personal preference and heating needs.<\/p>\n\n\n\n

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A heating system controlled by a room thermostat should have at least one radiator without a TRV\u2014this is known as the control radiator. It helps regulate the room\u2019s temperature without shutting off automatically like other radiators. Typically, the control radiator is placed in a hallway, where air changes frequently due to doors opening and closing. <\/p>\n\n\n\n

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It should also be located in a room without additional heat sources, such as a fireplace or ovens etc.<\/p>\n<\/div>\n\n\n\n

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Many modern room thermostats now include programmable heating schedules, allowing them to act as the primary control interface for the heating source, whether it\u2019s a boiler, heat pump, or another system. <\/p>\n\n\n\n

Heating systems housed in unheated spaces (garages etc) will usually have auxiliary thermostats to protect the system from freezing (frost stat). This is basically just a room thermostat set at a low setting within that space or connected to the pipework.<\/p>\n<\/div>\n\n\n\n

Thermostatic radiator valves (TRV’s).<\/h2>\n\n\n\n

A TRV, or thermostatic radiator valve, is a device that controls the temperature of a radiator by adjusting the flow of hot water. These can be standard or smart. Only one side of a radiator has a TRV, and the other has a restrict or valve called a lock shield, which can be used for system balancing<\/a>\u00a0and shutting off.<\/p>\n\n\n\n

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A smart thermostatic radiator valve (TRV) is a radiator valve that can be controlled remotely using a smartphone, tablet, or RF remote. The head of the TRV is what controls the temperature by forcing a pin to close the valve.
Most TRV heads can be interchanged, but the mechanical pin needs to be in good condition to continue working effectively.<\/p>\n\n\n\n

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Types of TRV’s.<\/h2>\n\n\n\n