7kW versus 22kW is mostly a supply and vehicle onboard charger conversation, not a status purchase. In the UK, prioritise a standards-based Type 2 AC install on a dedicated circuit, with smart scheduling if you use time-of-use tariffs. Compare written scopes for model, cable route, board work and warranty rather than badge marketing alone. Confirm live specs and any grant list entries before ordering.
What this guide covers
7kW versus 22kW is mostly a supply and vehicle onboard charger conversation, not a status purchase. This is an installation and buying brief for UK homes and light-commercial sites in September 2026, not a sponsored ranking.
Spec sheets change. Confirm live manufacturer data, installer warranties and any grant eligibility lists before you pay a deposit.
Why 7kW dominates UK homes
Most houses are single-phase. A 7kW-class wallbox fills daily miles overnight for many drivers without a service upgrade.
Marketing that pushes 22kW without three-phase context misleads buyers.
- Confirm supply type on the cutout or with the DNO paperwork
When higher AC helps
Three-phase homes, some larger vehicles and rapid turnaround fleets can benefit from 11kW or 22kW AC if the car accepts it.
Price the supply upgrade honestly before ordering the charger.
- Get the vehicle onboard AC limit in writing
Install notes
Never assume a 22kW unit will deliver 22kW on single-phase domestic supply.
Installation and electrical checks
A competent UK install covers dedicated circuit design, protective devices, earthing or open-PEN arrangements on PME supplies, mounting, weather sealing, testing and handover. Brand stickers do not replace those steps.
Ask for the charger model, tether length, cable route, board works, smart setup and exclusions in writing. Compare like for like across quotes.
Budgeting and next steps
Hardware price is only part of the bill. Labour, containment, posts and board upgrades often dwarf a mid-range wallbox sticker price. Use September 2026 planning bands around £800 to £1,400 including VAT for simple 7kW driveway jobs only as a starting illustration.
When you are ready, gather postcode, parking photos and board photos, then request local installer quotes with the shortlist of models you will actually accept.
Frequently asked questions
Is the most expensive charger the best?
Not automatically. Pay for features you will use: reliable app scheduling, suitable IP rating, load balancing, and a warranty your installer supports. Unused solar diversion or dual ports do not repay every buyer.
Can any electrician fit any brand?
You need a competent person for the electrical work and an installer familiar with the chosen unit's commissioning. Some grant routes also require authorised installer status. Ask for evidence relevant to your job.
Should I buy the unit myself?
Only if the installer will still warrant the full installation and the model is accepted for any scheme you need. Bundled supply can simplify call-outs.
What about 22kW at home?
22kW AC usually needs three-phase supply and a vehicle that can take it. Many UK homes are better served by 7kW single-phase overnight charging.
Core buying guides
Start with these high-intent guides, then dig into the rest of the library.
Related guides
Sources and further reading
How this guide was prepared
This guide was written by the Local EV Installers Editorial Team. We compare official guidance, legislation and established consumer information, separate general information from project-specific advice, and show publication dates and sources. We do not accept installer accreditation claims at face value.