If you have been asked for an electrical certificate, it is easy to mix up eicr vs pat testing. They are not the same job, they do not check the same risks, and one does not replace the other. That matters if you are a landlord, business owner, site manager, or homeowner trying to keep a property safe and compliant without paying for the wrong service.
The short version is simple. An EICR checks the fixed electrical installation of a property. PAT testing checks portable electrical appliances. One looks at the wiring, sockets, consumer unit, and overall condition of the installed system. The other looks at items you plug in and move around, such as kettles, monitors, extension leads, printers, vacuums, and power tools.
That distinction sounds straightforward, but the right answer often depends on how the building is used, who is responsible for it, and what level of risk is involved.
EICR vs PAT testing: what each one covers
An EICR stands for Electrical Installation Condition Report. It is a formal inspection and test of the fixed wiring in a property. The electrician is checking whether the installation is safe for continued use and whether there are signs of wear, damage, overloading, poor previous work, or non-compliance with current standards.
This includes things like the consumer unit, earthing and bonding, circuits, sockets, light fittings, switches, and any hardwired equipment that forms part of the installation. The report will usually identify observations, classify the level of risk, and say whether the installation is satisfactory or unsatisfactory.
PAT testing stands for Portable Appliance Testing. It focuses on electrical items that are plugged in rather than built in. That can include office equipment, kitchen appliances, extension cords, hand dryers, cleaning equipment, chargers, and tools. PAT testing usually combines a visual inspection with electrical testing where needed.
In practical terms, if the problem is in the walls, distribution board, or fixed circuits, that points toward an EICR. If the concern is an appliance someone plugs into a socket, that points toward PAT testing.
Why people confuse them
Most confusion starts because both services are about electrical safety and both may be needed at the same property. A rental home can need an EICR for the installation and PAT testing for any appliances supplied by the landlord. An office may need routine PAT testing for portable equipment while also arranging periodic EICRs for the building itself.
Another reason is that people often use the phrase “electrical certificate” as if it means one thing. It does not. The right test depends on what is being assessed.
That is where a lot of avoidable cost comes from. Some clients book PAT testing thinking it covers the condition of the building wiring. Others arrange an EICR and assume it covers every kettle, microwave, and extension lead on site. It does not.
Who usually needs an EICR
An EICR is commonly needed by landlords, commercial property operators, industrial sites, and anyone responsible for an older or heavily used installation. Homeowners may also want one if they are buying a property, planning renovations, noticing faults, or have not had the installation checked in years.
For landlords, this is often the more urgent of the two because the fixed installation is a legal safety issue in many rental situations. For businesses, an EICR is part of demonstrating that the electrical system itself is being properly maintained.
It is especially important in properties with high occupancy, older wiring, added circuits, signs of damage, or frequent nuisance tripping. In those cases, an EICR is not just a paperwork exercise. It can uncover genuine defects before they turn into a shutdown, fire risk, or injury.
Who usually needs PAT testing
PAT testing is most relevant where appliances are supplied, shared, moved, or used regularly by staff, tenants, residents, or contractors. Offices, rental properties, care settings, workshops, schools, and hospitality sites often fall into this category.
If you provide portable appliances as part of a tenancy or workplace, you have a clear reason to manage their safety. The same applies if your team relies on extension leads, power tools, cleaning equipment, or portable kitchen appliances.
PAT testing is also useful where there is a lot of wear and tear. A desk lamp in a private home may present very little risk if it is in good condition and rarely moved. A vacuum cleaner used daily by multiple staff members is a different story. The testing schedule should reflect that difference.
EICR vs PAT testing for landlords and agents
For landlords and property managers, the main question is not which one is better. It is whether you need one, the other, or both.
If you are responsible for the fixed electrical installation, an EICR is the key document. It shows whether the property wiring and installed components are safe for continued use. If you also provide appliances such as white goods, lamps, or portable heaters, PAT testing may be a sensible additional step.
That is where risk and practicality come in. A furnished rental with supplied appliances has a stronger case for PAT testing than an unfurnished property where tenants bring their own equipment. An estate agent managing multiple properties may benefit from keeping both types of testing on a planned schedule rather than dealing with them only when a tenancy changes.
What happens during each test
An EICR is more involved than PAT testing and usually takes longer. The electrician inspects the installation, carries out dead and live testing, checks protective devices, and records any defects or departures from current standards. Depending on the size and condition of the property, power may need to be isolated during parts of the inspection.
PAT testing is generally quicker and less disruptive. Appliances are visually checked for damage, cable faults, incorrect fuses, signs of overheating, or unsafe repairs. Where appropriate, test equipment is used to confirm electrical safety. Each item may then be labeled and logged.
For a busy site, this difference matters. A commercial client may be able to arrange PAT testing with minimal interruption, while an EICR may need a bit more planning, especially in occupied buildings or operational environments.
How often should they be done
There is no one-size-fits-all answer, and this is where poor advice causes problems.
EICR frequency depends on the type of property, how it is used, the age and condition of the installation, and any previous findings. Rental properties and commercial premises often follow set intervals or changes in occupancy, but defects, alterations, or incidents can justify earlier testing.
PAT testing frequency should be based on risk, not guesswork. Equipment used in a low-risk office by one person may need less frequent testing than appliances in a workshop, communal space, or care environment. The type of appliance matters too. Portable tools and extension leads usually deserve more attention than fixed desktop equipment.
A sensible contractor will not recommend the same schedule for every building. They should look at the actual use of the property and the equipment inside it.
Which one do you need right now?
If your concern is the building wiring, circuit safety, or landlord compliance, start with an EICR. If your concern is the safety of portable items people plug in and use, start with PAT testing.
If you run a workplace, manage rentals with supplied appliances, or oversee a site with both fixed systems and a lot of equipment, you may need both. They work together, but they are not interchangeable.
That is also why cheap, one-line advice can be misleading. A homeowner with no supplied appliances may have no real reason to book PAT testing at all. A business with dozens of extension leads and shared equipment should not assume an EICR covers everything. The right choice depends on what you are responsible for.
For property owners and managers who want clear answers without jargon, the best approach is to describe the building, the type of occupancy, and the equipment in use. A dependable electrician can then tell you what testing actually fits the job. If you need support across homes, rental properties, commercial units, industrial sites, or specialist settings, NS Electrical can help you book the right inspection instead of paying for the wrong one.
Good electrical safety is rarely about doing more for the sake of it. It is about checking the right things at the right time, so the paperwork means something and the property stays safe to use.