By the HomeEVCharger.co.uk – The UK's Independent EV Charging Guide Team · Updated May 2026 · Independent, reader-supported

How to Choose a Certified EV Charger Installer UK: 7 Things to Check

Installing an EV charger at home is a significant decision, and choosing the right installer matters far more than picking the charger itself. A poor installation can mean safety risks, future compatibility problems, and expensive remedial work. The good news: there's a clear checklist of credentials and practices that separate legitimate, competent installers from the rest.

Here's what you need to verify before handing over your money.

1. OZEV Approval Status

The Office for Zero Emission Vehicles (OZEV) grant scheme—currently offering up to £350 towards a home charging point installation—only covers work done by certified installers. This isn't just about squeezing every penny of the grant; OZEV-approved installers have passed safety and competency assessments.

Check the OZEV registered installer list directly. Search for your postcode and cross-reference the installer's name. If they claim OZEV approval but aren't on the list, that's a red flag.

2. NICEIC or NAPIT Membership

Both NICEIC and NAPIT are independent electrical safety bodies. Membership means the installer has been vetted, carries professional insurance, and their work is covered by a defects warranty (typically 6 years). These bodies also handle disputes if something goes wrong after installation.

Ask for their membership number and verify it on their respective websites—don't just take it on trust. The fee to join these schemes isn't trivial, so genuine members are serious operators. If an installer won't provide this or says they're "working towards" membership, look elsewhere.

3. Public Liability and Professional Indemnity Insurance

A certified installer should carry at least £1 million in public liability insurance (covering damage to your property or injury during installation) and professional indemnity insurance (covering design or installation errors that cause problems later).

Request a copy of their current insurance certificate. Don't settle for verbal assurances. Insurance protects you if the installer damages your electrics, your car, or your property—and it's worthless if it's expired or doesn't cover the work they're about to do.

4. Electrical Safety Certification

Your installer must provide an EICR (Electrical Installation Condition Report) before work starts and an EIC (Electrical Installation Certificate) afterward. These aren't optional paperwork; they're legal requirements for electrical work in the UK and essential for insurance claims and future home sales.

If they hand you a vague "completion certificate" or promise the paperwork "later," they're cutting corners. Proper documentation shows the work was done to Building Regulations and Part P standards.

5. Experience with Your Vehicle and Supply

Not all chargers suit all cars, and not all houses suit all installation approaches. An experienced installer will ask about your vehicle, your current electrical supply (single-phase or three-phase), and your driving patterns.

For example, if you have a 100A single-phase supply and you're installing a 22kW three-phase charger, your house may need an upgrade—a good installer will flag this upfront and give you a clear cost estimate. They should also be familiar with potential issues specific to your region (congested networks in certain areas, for instance).

6. Three Quotes Minimum

Get at least three quotes before deciding. Prices vary for genuine reasons: some installers may recommend a supply upgrade you don't strictly need; others may spot a cheaper alternative on your property. Comparing quotes also surfaces whether someone is unusually cheap (and likely cutting corners) or unusually expensive.

A thorough quote should itemise labour, materials, any groundwork, and supply upgrades separately. Vague quotes—"£1,200 all in, final cost depends on the job"—are harder to compare and more likely to feature surprise add-ons.

7. Post-Installation Support and Warranty

Ask what happens if the charger stops working six months in, or if there's an issue with the installation. A reputable installer should offer a warranty covering their labour (usually 1–2 years) and work with charger manufacturers on product warranties.

They should also be reachable for advice. If you can't get them on the phone in three weeks' time, you'll regret it.

The Practical Checklist

Before you commit:

• Verify OZEV approval on the official register
• Check NICEIC or NAPIT membership directly with the body (not just their claim)
• Request and verify current insurance certificates
• Confirm they'll provide an EIC and EICR in writing
• Get quotes in writing with itemised breakdowns
• Ask about post-installation support and warranty terms
• Check reviews on Trustpilot or Google, but read recent ones (circumstances change)

Costs and Timescales

A straightforward installation in a house with adequate electrical supply typically costs £800–£1,200 installed. If your supply needs upgrading, expect an additional £500–£2,000. The OZEV grant covers £350, so your net cost is usually £450–£1,650 depending on your circumstances.

For more detail on what you might spend, see our [EV charger installation costs guide].

Final Thought

A cheap installer who cuts corners today becomes an expensive problem tomorrow. The right installer—certified, insured, and experienced—adds perhaps £200–£300 to the cost but removes the risk entirely. That's a worthwhile trade-off.

If you're also exploring funding options, check our [guide to EV grants and schemes].