Time and Temperature Zone Control TTZZ
Time and Temperature Zone Control (TTZZ) refers to heating systems that allow for the independent programming of both the time of heating and the temperature in different areas or zones of a building. This can both help improve comfort levels and help improve energy efficiency of the system.
Such systems work by using multiple thermostats or smart thermostatic radiator valves (TRVs) to control separate heating circuits or zones, allowing energy to be focussed on areas in use. This is different from now relatively rare single-zone heating systems, which effectively use just a single thermostat to control the entire space heating for a building. These systems may also compensation boiler control also know as weather compensation, including an external sensor allowing it to compensate for external temperatures to improve efficiency.
With the onset of the Internet of Things (IoT) and smart technology many of these systems can now be wifi controlled, meaning they can be controlled and monitored remotely from a smart phone or laptop.
[edit] Related articles on Designing Buildings
- Boiler.
- Building standards.
- Heat exchanger.
- Heat interface units.
- Heat meter.
- Heat recovery.
- Heat transfer.
- Radiant heating.
- Sequence control.
- Smart Homes and Buildings market.
- Thermal comfort.
- Thermostat.
- Time and Temperature Zone Control TTZZ.
- Types of boiler.
- Weather compensation.
- Zone control.
Featured articles and news
Building Safety recap January, 2026
What we missed at the end of last year, and at the start of this...
National Apprenticeship Week 2026, 9-15 Feb
Shining a light on the positive impacts for businesses, their apprentices and the wider economy alike.
Applications and benefits of acoustic flooring
From commercial to retail.
From solid to sprung and ribbed to raised.
Strengthening industry collaboration in Hong Kong
Hong Kong Institute of Construction and The Chartered Institute of Building sign Memorandum of Understanding.
A detailed description fron the experts at Cornish Lime.
IHBC planning for growth with corporate plan development
Grow with the Institute by volunteering and CP25 consultation.
Connecting ambition and action for designers and specifiers.
Electrical skills gap deepens as apprenticeship starts fall despite surging demand says ECA.
Built environment bodies deepen joint action on EDI
B.E.Inclusive initiative agree next phase of joint equity, diversity and inclusion (EDI) action plan.
Recognising culture as key to sustainable economic growth
Creative UK Provocation paper: Culture as Growth Infrastructure.
Futurebuild and UK Construction Week London Unite
Creating the UK’s Built Environment Super Event and over 25 other key partnerships.
Welsh and Scottish 2026 elections
Manifestos for the built environment for upcoming same May day elections.
Advancing BIM education with a competency framework
“We don’t need people who can just draw in 3D. We need people who can think in data.”
Guidance notes to prepare for April ERA changes
From the Electrical Contractors' Association Employee Relations team.
Significant changes to be seen from the new ERA in 2026 and 2027, starting on 6 April 2026.
First aid in the modern workplace with St John Ambulance.
Solar panels, pitched roofs and risk of fire spread
60% increase in solar panel fires prompts tests and installation warnings.
Modernising heat networks with Heat interface unit
Why HIUs hold the key to efficiency upgrades.
























