storage heater: meaning, definition, pronunciation and examples
B2Technical/Everyday
Quick answer
What does “storage heater” mean?
An electrical heater that stores thermal energy during off-peak hours when electricity is cheaper, then releases it gradually as heat throughout the day.
Audio
Pronunciation
Definition
Meaning and Definition
An electrical heater that stores thermal energy during off-peak hours when electricity is cheaper, then releases it gradually as heat throughout the day.
A domestic heating appliance, typically large and heavy, containing refractory bricks or ceramic blocks that are electrically heated at night. It is designed for efficiency in contexts with time-of-use electricity tariffs, providing background heating without constant power draw during peak daytime hours.
Dialectal Variation
British vs American Usage
Differences
The term is far more common in British English due to widespread use of Economy 7 and similar off-peak electricity tariffs. In American English, the concept exists but is less prevalent; alternative systems like heat pumps or forced-air furnaces are more typical.
Connotations
In the UK, it often connotes older housing stock, rental properties, or a cost-effective but sometimes sluggish heating solution. In the US, it is a specialized term with stronger technical connotations.
Frequency
High frequency in UK domestic energy contexts; low-to-medium frequency in US technical/engineering contexts.
Grammar
How to Use “storage heater” in a Sentence
install a storage heaterreplace the storage heaterthe storage heater charges overnightstorage heater with a thermostatVocabulary
Collocations
Examples
Examples of “storage heater” in a Sentence
verb
British English
- The system is designed to storage-heat the building overnight.
- We need to storage-heat the core of the structure.
American English
- [Rarely verbed; 'utilize thermal storage' is preferred]
adverb
British English
- [Not used adverbially]
American English
- [Not used adverbially]
adjective
British English
- storage-heater tariffs
- storage-heater technology
American English
- thermal-storage heating
- off-peak heating system
Usage
Meaning in Context
Business
Discussions of energy tariffs, retrofitting properties, or manufacturing domestic appliances.
Academic
Papers on energy efficiency, load shifting in electrical grids, or thermal mass in building design.
Everyday
Talking about home heating bills, describing a cold flat, or discussing renovations.
Technical
Specifications for heating systems, calculations of thermal capacity, or electrical wiring regulations.
Vocabulary
Synonyms of “storage heater”
Strong
Neutral
Weak
Vocabulary
Antonyms of “storage heater”
Watch out
Common Mistakes When Using “storage heater”
- Using 'storage heater' to mean a heater in a storage room. Confusing it with a 'water heater'. Incorrectly calling it a 'radiator'. Mispronouncing as 'story-heater'.
FAQ
Frequently Asked Questions
No, they are designed to work optimally with time-of-use tariffs that offer significantly cheaper rates during specific off-peak hours (e.g., overnight).
You can control its output to some degree, but its core heating cycle is automatic, based on a timer charging it during the cheap period. You cannot instantly generate more heat once its stored energy is depleted.
Their running cost depends entirely on the off-peak electricity rate. They can be very cost-effective compared to standard electric heaters used during peak hours, but usually less efficient than modern heat pumps.
They contain dense blocks of refractory material (like clay bricks or ceramic) with high thermal mass, which are heated by embedded electrical elements. The heat is then released through convection or a fan.
An electrical heater that stores thermal energy during off-peak hours when electricity is cheaper, then releases it gradually as heat throughout the day.
Storage heater is usually technical/everyday in register.
Storage heater: in British English it is pronounced /ˈstɔːrɪdʒ ˈhiːtə/, and in American English it is pronounced /ˈstɔːrɪdʒ ˈhiːtər/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “[No common idioms for this technical term]”
Learning
Memory Aids
Mnemonic
Think of a 'heat battery'—it STORES heat (like a battery stores charge) and is a HEATER.
Conceptual Metaphor
A HEATER IS A BATTERY (it stores and discharges energy).
Practice
Quiz
What is the primary economic principle behind using a storage heater?