I’m looking to replace my existing Drayton Digistat 3 thermostat with a modern, wireless smart thermostat. I have a Keston gas central heating boiler and would like recommendations for a good-quality, reasonably priced system that is compatible with my existing boiler. My priorities are: * Wireless thermostat (no wired wall-mounted controller). * Smartphone app control, allowing me to adjust the heating when I’m away from home or before I return. * Easy-to-use app and straightforward programming. * Ability to set automatic heating schedules for weekdays and weekends. * Simple temperature adjustment and remote on/off control. * Reliable system without unnecessarily complicated features or expensive ongoing subscriptions. I’m considering brands such as Drayton Wiser, Tado or other suitable alternatives, but I’m open to recommendations. Please provide: 1. Your recommended thermostat and why. 2. Confirmation that it is compatible with my Keston boiler. 3. Total cost including the thermostat, receiver and installation. 4. Whether any additional hub or subscription is required. 5. Your availability and experience installing smart heating controls. I’m looking for someone experienced who can recommend the best-value option and supply and install it.