The term ‘thermal comfort’ describes a person’s state of mind in terms of whether they feel too hot or too cold.
Environmental factors (such as humidity and sources of heat in the workplace) combine with personal factors (ie your clothing) and work-related factors (how physically demanding your work is) to influence your ‘thermal comfort’.
'An acceptable zone of thermal comfort for most people in the UK lies roughly between 13°C (56°F) and 30°C (86°F), with acceptable temperatures for more strenuous work activities concentrated towards the bottom end of the range, and more sedentary activities towards the higher end.'
During working hours the temperature in all indoor workplaces must be reasonable.
There’s no law for minimum or maximum working temperatures, eg when it’s too cold or too hot to work. However, guidance suggests a minimum of 16ºC or 13ºC if employees are doing physical work. There’s no guidance for a maximum temperature limit.
Employers must stick to health and safety at work law, including:
Employees should talk to their employer if the workplace temperature isn’t comfortable.