Andersen Quartz vs CTEK Chargestorm Connected 3: £391 apart, different worlds

A design charger and a car-park unit walk onto a driveway

These two chargers have almost nothing in common beyond a Type 2 socket. The Andersen Quartz at £695 is a compact, good-looking home charger with eleven finishes and a seven-year warranty. The CTEK Chargestorm Connected 3 at £1,086 is a 24 kg slab of Scandinavian engineering — three-phase native, OCPP on both versions, MID-approved metering, built-in MRCD Type B protection. It belongs on the wall of a business with a three-phase supply. That it also *works* at home does not mean it was *designed* for one.

• Andersen Quartz — a single-phase home charger with smart-tariff integration, IP65, and Andersen's fit-and-finish reputation. £695.
• CTEK Chargestorm Connected 3 — three-phase commercial hardware that happens to fit a domestic wall. OCPP 2.0.1, ISO 15118, MID meter. £1,086.

The £391 gap is the price of three-phase capability and protocol flexibility you may never touch.

Why the Andersen Quartz is the obvious single-phase pick

On a standard UK single-phase supply, both chargers deliver roughly the same charge speed — around 7.2–7.4 kW. The Quartz does this for £391 less, with a warranty two years longer, in a body that weighs under 5.2 kg rather than 24 kg. It speaks to Intelligent Octopus Go and OVO Charge Anytime natively through the Andersen app, so off-peak scheduling is handled without third-party middleware. Its included CT clamp manages solar diversion. Its IP65 rating beats the CTEK's IP54 for exposed installations.

The CTEK, wired single-phase, is a charger paying rent on hardware it cannot use. You get a 22 kW inverter running at a third of its capacity, a three-phase contactor doing nothing, and OCPP compliance that matters to fleet managers but not to someone charging a Model 3 overnight. The MID meter is genuinely useful if you need auditable billing — say, for an employer reimbursing home charging — but most domestic owners do not.

When the CTEK earns its price

Three-phase supply. That is the dividing line. If your home already has three phases — or you are upgrading as part of a heat-pump or battery install — the CTEK delivers 22 kW from the wall without a surcharge. The Andersen Quartz *offers* a 22 kW three-phase variant, but it adds £195 to the base price, bringing it to £890. The gap narrows to £196, and the CTEK's extras start to matter: OCPP 2.0.1 means you are not locked to a single vendor's backend; ISO 15118 plug-and-charge is forward-looking; the built-in MRCD Type B saves the £150-odd an installer would spend on an external one.

The CTEK is also OZEV-approved. For eligible renters and flat owners, the £500 grant brings the effective unit price to £586 — less than the Quartz at full retail. The Quartz is *not confirmed* on the OZEV list, so grant-eligible buyers should verify before committing.

One caveat on smart tariffs: the CTEK has no first-party app for tariff integration. Scheduling runs through OCPP-compatible platforms like Monta. If you want the set-and-forget simplicity of Octopus Intelligent Go talking directly to your charger, the CTEK cannot do it. The Quartz can. For variable tariffs like Octopus Agile, neither charger chases half-hourly rates — that job still belongs to the Ohme Home Pro.

Install cost matters here more than usual

The Quartz's typical install runs £435–£800. The CTEK's runs £900–£1,300 — and higher if a three-phase sub-main is involved. Added to unit prices, the all-in cost of the CTEK can reach £2,386 before any grant, versus roughly £1,100–£1,495 for the Quartz. That is a significant spread. Buyers considering the CTEK should get a three-phase install quote *before* committing to the hardware.

The verdict

Buy the Andersen Quartz if:

• Your home is single-phase — which is most UK homes
• You want native smart-tariff integration with Intelligent Octopus Go or OVO Charge Anytime
• You care about finish, weight, and a seven-year warranty

Buy the CTEK Chargestorm Connected 3 if:

• You have or are installing a three-phase supply and want 22 kW from day one
• You need OCPP 2.0.1, MID metering, or ISO 15118 for business or fleet use
• You are OZEV-eligible and the £500 grant closes the gap

For the overwhelming majority of UK Tesla owners on a single-phase supply, the Quartz is the better charger at the better price. It is not the cheapest on the market — a Hypervolt Home 3 Pro at £690 or a Tesla Wall Connector at £478 will charge just as fast — but if Andersen's design language is what drew you here, the Quartz delivers it without the CTEK's irrelevant overhead. The CTEK is a fine piece of hardware looking for a three-phase wall. If yours is one, it belongs on the shortlist alongside the Zaptec Go 2. If it is not, save the £391.