GB/T 24986.5-2026Reliability test and evaluation methods for household and similar electrical appliances — Part 5: Particular requirements for room heaters (English PDF)
家用和类似用途电器可靠性试验及评价 第5部分：室内加热器的特殊要求
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
July 30, 2026
Implementation date
February 1, 2027
Scope
GB/T 24986.5-2026 is the English-translated version of 家用和类似用途电器可靠性试验及评价 第5部分：室内加热器的特殊要求.
GB/T 24986.5-2026 is the Chinese standard "Reliability test and evaluation methods for household and similar electrical appliances — Part 5: Particular requirements for room heaters".
Its scope clause reads: This document specifies the parameters and indicators for reliability evaluation of household and similar indoor heaters (hereinafter referred to as "heaters"), and the distribution assumption.
The test method is described, including the design, evaluation method, fault criteria and statistics, data processing, result determination, test record and reporting requirements.
This document applies to all types of portable and stationary heaters. Single-phase appliances have a rated voltage not exceeding 250 V, while other appliances have a rated voltage...
Heaters with a voltage not exceeding 480 V. This document does not apply to the following heaters. --Heats installed within the building structure; --Central heating system; --A heater connected to the air duct; --Wallpaper, blankets, curtains, or pipes fitted with soft electric heating elements; --Household thermal storage indoor heater; --Bathroom electric heater (bathroom heater).
Its clauses include terms and definitions; parameters and indicators for reliability evaluation.
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Document preview — GB/T 24986.5-2026
National Standard of the People's Republic of China
- ICS
- 97.100.10
- Classification
- Y 60
- Replacing
- GB/T 24986.5-2017
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1.Scope1
- 2 Normative references1
- 3.Terms and Definitions1
- 4.Parameters and Indicators for Reliability Evaluation1
- 5.Distribution Hypothesis2
- 8.Fault diagnosis and statistics5
- 9 Data Processing6
- 10.Test records and test reports7
- Appendix A (Informative) Recommended MTTFF Values for Heaters8
- Appendix B (Informative) Recommended MTBF Values for Heaters9
- Appendix C (Informative) Typical Heater Failures10
- References11
1 Scope
This document specifies the parameters and indicators for reliability evaluation of household and similar indoor heaters (hereinafter referred to as "heaters"), and the distribution assumption.
The test method is described, including the design, evaluation method, fault criteria and statistics, data processing, result determination, test record and reporting requirements.
This document applies to all types of portable and stationary heaters. Single-phase appliances have a rated voltage not exceeding 250 V, while other appliances have a rated voltage...
Heaters with a voltage not exceeding 480 V.
This document does not apply to the following heaters.
--Heats installed within the building structure;
--Central heating system;
--A heater connected to the air duct;
--Wallpaper, blankets, curtains, or pipes fitted with soft electric heating elements;
--Household thermal storage indoor heater;
--Bathroom electric heater (bathroom heater).
2 Normative references
The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are listed below.
For references to this document, only the version corresponding to that date applies. For undated references, the latest version (including all amendments) applies.
GB/T 2900.99-2016 Reliability of Electrical Engineering Terminology
GB/T 5080.1-2012 Reliability testing – Part 1.Test conditions and statistical test principles
GB/T 5080.7-1986 Verification test of failure rate and mean time between failures under the assumption of constant failure rate in equipment reliability testing
Test Plan
GB/T 24986.1-2020 Reliability testing and evaluation of household and similar electrical appliances – Part 1.General requirements
QB/T 4096.1-2024 Performance of Indoor Heaters for Household and Similar Purposes - Part 1.General Requirements
3 Terms and Definitions
GB/T 2900.99-2016, GB/T 5080.1-2012, GB/T 5080.7-1986, GB/T 24986.1-2020, QB/T 4096.1-
The terms and definitions defined in 2024 and the following terms and definitions apply to this document.
3.1 independent fault
Product failure that is not directly or indirectly caused by another product failure or malfunction.
[Source. GB/T 2900.99-2016, 192-03-06, with modifications]
4 Parameters and Indicators for Reliability Evaluation
4.1 Selection of Reliability Evaluation Parameters
4.1.1
The reliability parameters selected for the heater refer to the Mean Time Before First Failure (MTTFF) and Mean Time Between Failures (MTBF).
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Editions of GB/T 24986.5
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 24986.5-2026 | Reliability test and evaluation methods for household and similar electrical appliances — Part 5: Particular requirements for room heaters | current edition | Current |
| GB/T 24986.5-2017 | Reliability test and evaluation methods for household and similar electrical appliances — Part 5: Particular requirements for room heaters | previous edition | In force until 1 February 2027 |
This page sells the current edition, GB/T 24986.5-2026. Earlier editions are listed for reference only.
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Related Standards
GB/T 24986.1-2020 — Testing evaluation methods for reliability on household and similar electrical appliances —Part 1: General requirements
GB/T 24986.2-2024 — Testing evaluation methods for reliability on household and similar electrical appliances—Part 2: Particular requirements for refrigerators appliances
GB/T 24986.4-2017 — Evaluation methods for reliability on household and similar electrical appliances—Part 4: Particular requirements for room air conditioners
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