PAT Testing Legal Requirements & Frequency Checker
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PAT Testing Frequently Asked Questions
What people also ask about
Commercial PAT Testing
Need to know a little more about where you stand on pat testing compliance? Take a look at our frequently asked questions! If you do not find the answer you are looking for, please check our PAT testing in Sussex page or simply contact our team for a no-obligation discussion.
Is PAT testing a strict legal requirement in the UK?
No single UK law mandates annual PAT testing by name, but the Electricity at Work Regulations 1989 and the Health and Safety at Work Act 1974 legally require employers and duty holders to maintain all electrical systems and appliances in a safe condition. Regular Portable Appliance Testing is the most widely recognised way to prove compliance to the HSE, auditors, and commercial insurers.
How often should commercial appliances be tested?
There is no fixed universal schedule—testing frequency is determined by a risk assessment based on equipment type and environment. High-risk workplaces such as construction sites, commercial kitchens, schools, and public-facing venues typically require formal testing every 3 to 12 months, whereas lower-risk offices may only need formal testing every 1 to 4 years.
Do you need to PAT test new equipment?
No—brand-new electrical equipment does not require immediate formal PAT testing. Under HSE and IET guidelines, new appliances supplied by reputable manufacturers already comply with UK safety regulations. However, you should still perform a quick visual check upon delivery for transit damage, log the item into your asset register, and schedule its first formal test based on your workplace risk level (usually 12 to 48 months later).
How long does a PAT test certificate last?
There is no fixed legal expiry date for a PAT certificate—instead, validity is determined by a formal risk assessment. In low-risk office environments, desktop IT equipment may only require formal re-testing every 2 to 4 years, whereas higher-risk environments—such as commercial kitchens, schools, construction sites, and HMOs—typically require testing every 6 to 12 months. Your engineer will recommend your next due date on your compliance report.
Is PAT testing a legal requirement for landlords and holiday lets?
While no standalone law mandates annual PAT testing by name, UK landlords and holiday let operators are legally required to ensure all supplied electrical appliances are safe.
Under the Electrical Equipment (Safety) Regulations 1994 and Homes (Fitness for Human Habitation) Act 2018, regular PAT testing is the standard, recognised way to prove due diligence to local councils, letting agents, and landlord insurance providers—especially for HMOs and furnished short-term lets.
What items need PAT testing in a workplace?
Any electrical appliance with a plug that can be moved or connected to a standard mains socket should be included in your inspection schedule.
This includes office and IT gear (desktop PCs, monitors, laptop chargers, printers, and extension leads), kitchen and breakroom items (kettles, microwaves, coffee machines, and fridges), and commercial or site tools (110V power tools, floor cleaners, portable heaters, and workshop equipment).
How often should office appliances be PAT tested?
In a standard low-risk office, stationary equipment (like desktop PCs and monitors) typically only needs formal electrical testing every 24 to 48 months, supported by regular visual user checks. Moveable items—such as laptops, extension leads, and shared kitchen appliances—are subject to more wear and tear and should generally be tested every 12 to 24 months.
What is PAT testing called now?
PAT testing is now officially referred to as EET (Electrical Equipment Testing) or ISITEE (In-Service Inspection and Testing of Electrical Equipment) under the 5th Edition of the IET Code of Practice.
The terminology was updated to clarify that fixed, stationary, and built-in appliances require inspection alongside traditional “portable” plug-in items—though most businesses and insurers still refer to the process simply as PAT testing.
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