Tesla Wall Connector (Gen 3) vs Simpson & Partners Home 7

The £174 question: function or furniture?

The Tesla Wall Connector (Gen 3) costs £475. The Simpson & Partners Home 7 costs £649 — £174 more. Both charge a single-phase home at roughly 7 kW, both support three-phase at 22 kW, and both mount on the same stretch of wall. The difference is what you're paying that extra £174 for.

• Tesla Wall Connector — £475, 7.3-metre cable, native Tesla app, four-year warranty. The default for a Tesla household on a fixed off-peak tariff.
• Simpson & Partners Home 7 — £649, UK-made anodised aluminium, 10-year enclosure warranty, OZEV-approved, smart tariff support. The charger you buy when the driveway faces the street.

Grant eligibility tips the maths

The Tesla Wall Connector is not OZEV-approved. The Simpson & Partners Home 7 is. For eligible renters and flat owners, the £500 OZEV grant covers the £649 unit outright and chips into the install costs too. That makes the Simpson & Partners effectively cheaper than the Tesla for anyone who qualifies — a reversal worth checking before you order anything.

For homeowners who bought after April 2022 — the majority of applicants — neither charger attracts the grant, and the £174 gap stands as printed.

Build quality and the warranty fine print

Simpson & Partners markets itself as the design-led alternative to the Andersen A3, and the comparison is fair. Anodised aluminium, multiple premium finishes including Accoya wood and Cotswolds Green, UK manufacture. At £649 it undercuts the Andersen A3 by £251 and offers a longer enclosure warranty — ten years versus five. If your charger will be visible from the pavement, the Simpson & Partners makes a credible case as the best-looking unit under £700.

The fine print matters, though. That 10-year warranty covers the enclosure — the aluminium shell. The internal electronics carry a three-year warranty. The Tesla Wall Connector's four-year warranty covers the whole unit, electronics included. Neither arrangement is dishonest, but they measure different things. A reader who values long-term electronic cover may find the Tesla's single four-year term more straightforward than the Simpson's split.

IP rating favours the Simpson & Partners: IP54 against the Tesla's IP44. On an exposed wall with no overhang, that gap is meaningful — IP44 handles splashing; IP54 handles dust ingress and heavier spray. The Tesla is better suited to a garage wall or a sheltered mounting spot.

Smart tariff support — and where the Tesla falls short

The Tesla Wall Connector schedules charging through the Tesla app. Set a window — say, 00:30 to 05:30 for Octopus Go — and the car waits. On a fixed off-peak tariff, that is all you need.

The Simpson & Partners Home 7 goes further. It integrates with Intelligent Octopus Go, letting the charger itself optimise sessions across the off-peak window. It also supports solar diversion and energy monitoring — features the Tesla lacks without additional hardware. On a variable tariff like Octopus Agile, a charger that can respond to half-hourly price signals has a structural advantage. The Tesla cannot do this natively; for that job, the Ohme Home Pro at £539 remains the specialist choice and costs £110 less than the Simpson & Partners.

The Simpson & Partners app is functional but less polished than the Tesla app. If you live inside the Tesla ecosystem — wall charger, car, Powerwall — the seamlessness of a single interface has real value. Switching to the S&P app means managing charging outside the Tesla app, which is a minor daily friction some owners will mind and others will not.

Cable length and install practicalities

The Tesla Wall Connector's 7.3-metre tethered cable is the longest in the market at this price. The Simpson & Partners comes with a 5-metre cable in its tethered version, or can be bought untethered — handy if you already own a Type 2 cable or share the charger between vehicles with different connectors.

One installation note: the Tesla Wall Connector has no built-in RCD or surge protection, so the installer adds both to the consumer unit. The Simpson & Partners includes the protection it needs. Factor that into install quotes — the Tesla's £400–£600 estimate can creep toward the upper end once protection devices are priced in.

Which to buy

Buy the Tesla Wall Connector if:

• You own a Tesla and want the native app experience at the lowest price — £475
• Your charger mounts in a garage or sheltered spot where IP44 is sufficient
• You use a simple fixed off-peak tariff like Octopus Go and a manual schedule is all you need

Buy the Simpson & Partners Home 7 if:

• The charger will be visible from the street and appearance matters to you
• You qualify for the £500 OZEV grant, which wipes out the unit price entirely
• You want smart tariff integration, solar compatibility, or the security of a 10-year enclosure warranty

For most Tesla owners — those charging in a garage on a fixed off-peak rate — the Wall Connector does the job for £174 less, and the app is already on your phone. The Simpson & Partners earns its price when the wall is the front of the house. If your real priority is tariff optimisation rather than aesthetics, the Ohme Home Pro at £539 splits the difference and does it better than either. Readers weighing the Simpson & Partners against the Andersen will find a more direct comparison on our Andersen A3 vs Simpson & Partners Home 7 page.