Andersen A3 vs Sync Energy Link

The Sync Energy Link has a £530 lower recorded unit or package price: £465 against £995 for the Andersen A3.

Using each product's recorded installation basis, the Andersen A3 is £1,430–£1,655 installed and the Sync Energy Link is £865–£1,065 installed. These are planning ranges, not quotes; cable routes and electrical remedial work can change the result.

Both the Andersen A3 (7.4kW) and Sync Energy Link (7.4kW) are single-phase chargers, delivering around 7–7.4kW on a standard UK home supply.

On a standard UK single-phase supply, both will charge a Tesla Model 3 Long Range (75kWh battery) from 20% to 80% in approximately 5–6 hours overnight. Even a Tesla Model Y with its larger battery completes a typical daily top-up well within an overnight window. For the vast majority of UK Tesla owners, single-phase 7kW charging is more than sufficient — you'll wake up to a full battery every morning.

The Andersen A3 offers: Andersen app, Smart tariff support, Solar integration, Scheduled charging, Hidden cable system, Wi-Fi connected. The Sync Energy Link offers: Sync Energy app with Octopus Go and Agile schedule modes, Tariff Sense cost tracking, Auto Solar Charging (CT clamp in the box), Dynamic load balancing, Wi-Fi + Ethernet + Bluetooth; 4G on G models (3 years of data), OCPP 1.6J, Metal box: 40A Type A RCD, 40A MCB and Type 2 SPD built in, PEN fault protection built in.

Breaking these down by category: for connectivity, the Andersen A3 uses Wi-Fi connected, while the Sync Energy Link uses Wi-Fi + Ethernet + Bluetooth; 4G on G models (3 years of data). For energy management, the Andersen A3 provides basic monitoring, compared to the Sync Energy Link's Sync Energy app with Octopus Go and Agile schedule modes, Tariff Sense cost tracking, Dynamic load balancing.

Both the Andersen A3 and Sync Energy Link support solar integration, allowing you to charge your Tesla using surplus solar energy rather than drawing from the grid.

The Andersen A3 supports solar diversion through its energy management system. The Sync Energy Link supports solar diversion through its energy management system.

The Andersen A3 integrates with smart energy tariffs, automatically charging at the cheapest off-peak rates. The Sync Energy Link doesn't have built-in smart tariff integration — you'd need to set manual charging schedules or rely on your car's built-in timer.

The Andersen A3 supports smart tariff scheduling with popular EV tariffs.

The Andersen A3 comes with a 7 years warranty, while the Sync Energy Link offers 3 years. The Andersen A3 offers 4 years more coverage.

For weatherproofing, the Andersen A3 is rated IP54 (weatherproof), while the Sync Energy Link is rated IP65; IK10 (metal box) / IK08 (plastic box). Any rating of IP54 or above is suitable for a UK outdoor installation.