DIY PAT Testing vs Hiring a Professional: Which Is Better?

PAT testing equipment is available for purchase, leading some to consider doing it themselves. But is DIY PAT testing a good idea? Here are the pros and cons.

Can You Legally Do Your Own PAT Testing?

Yes, technically. There is no legal requirement for PAT testing to be carried out by a specific type of professional. However, the person carrying out the testing must be competent — meaning they must have the knowledge, training, and experience to do the work safely and correctly.

The Case for DIY

If you have a small number of appliances and some electrical knowledge, buying or hiring a PAT tester and doing it yourself can save money. Basic PAT testers start from around £200 to £400. You can test at your own convenience and retest whenever you like without booking anyone.

The Case Against DIY

Professional PAT testers bring several advantages that DIY cannot match. They have formal training and experience, meaning they can identify faults that a novice might miss. They use professionally calibrated equipment that is maintained to a higher standard. They provide fully documented certificates that are recognised by insurers, local authorities, and courts. They carry professional indemnity insurance that covers their work. And critically, they understand the nuances of testing — knowing which tests to apply to which appliance class and how to interpret borderline results.

Insurance and Liability Considerations

If an appliance causes injury or damage, your insurer will want to see evidence that it was properly tested. A certificate from a qualified professional carries significantly more weight than self-produced records. Some insurance policies specifically require professional testing.

Our Recommendation

For peace of mind, legal protection, and professional documentation, we recommend using a qualified PAT testing service. The cost is modest compared to the potential liability of an electrical incident, and the professional certificate provides robust evidence of your duty of care.