Google Nest Installation in London: Thermostats, Doorbells, Cameras and Protect

• Google does not provide, sell or take payment for installation and accepts no liability for it; it suggests finding a trained installer through Google Search and checking them yourself
• Its help pages describe Nest Pros as independent companies or contractors, not Nest employees, and the Pro Finder link they give now redirects to Google's US store
• If a Heat Link needs replacing because of a boiler problem, Google's UK help sends you to its installation partner BOXT, whose booking page asks for a case number from Google Nest customer care

• Thermostats: the Nest Learning Thermostat (3rd gen) with its Heat Link, and the Nest Thermostat E with its battery Heat Link E, fitted, moved or refitted
• Heat Links: a faulty 3rd gen Heat Link swapped like for like at the wall, once you have asked Google Nest customer care whether BOXT can replace it free
• Doorbells: the Nest Doorbell (battery), on its battery or on existing bell wire, and the older wired Nest Hello, refitted or replaced
• Cameras: Nest Cam (battery), Nest Cam Outdoor (wired, 2nd gen), Nest Cam Indoor (wired, 3rd gen), the Nest Cam with floodlight, and older Nest Cam and Nest Cam IQ models
• Nest Protect: expired or chirping alarms replaced, battery or wired 230 V
• Wi-Fi and displays: Nest Wifi Pro, older Nest Wifi and Google Wifi, Nest Hub displays and the Google Home Speaker, set up with one of them as the home's Matter and Thread hub

• No new thermostats: Google said in April 2025 that it will no longer launch new Nest thermostats in Europe, and press reports said the 3rd gen and Thermostat E would stay on sale while stocks last
• Not for UK heating: the Nest Learning Thermostat (4th gen) and the Nest Thermostat (2020) are sold in the US and Canada only, and Google says thermostats made for those countries will not work with European systems, which need a Heat Link and high-voltage support, so JACK pros do not fit imported ones
• 2nd gen support ended: from 25 October 2025 the Nest Learning Thermostat (2nd gen, Europe version, 2014) was removed from the Nest and Google Home apps and stopped getting updates, though the schedule on the device keeps running
• Nest Protect stopped: Google announced in March 2025 that it no longer makes Nest Protect, and its help pages now say the alarm is no longer for sale but is still supported

• JACK pro: a 3rd gen Heat Link in place of your programmer, timer or receiver, at the same spot or an external wiring centre, on the existing wiring
• JACK pro: a Heat Link E in place of your wired room thermostat, on its two existing wires
• Gas Safe engineer: Gas Safe Register says a boiler case held on by screws is normally a functional case that only a registered engineer should remove, so JACK sends any wiring at the boiler, including OpenTherm and a first connection on a boiler with no external controls, to a Gas Safe registered engineer
• Gas Safe engineer, too: a Heat Link E that Google's UK terms place next to the boiler, where there is no room thermostat or the boiler has a built-in receiver, unless a wiring centre outside the boiler can take it
• G3-qualified installer: the controls of an unvented (pressurised) hot water cylinder

• No mains work at all: battery doorbells and cameras, plug-in Nest Cams, Nest Wifi, Nest Hub and Google Home Speaker set-ups, and battery Nest Protects
• Not notifiable, and done by JACK pros: a Heat Link on existing controls wiring, a Nest doorbell on an existing bell transformer or a like-for-like transformer swap on the same supply, a Nest Cam with floodlight in place of an outside light on the same circuit, a wired Nest Protect replaced on its existing wiring, and an outdoor socket spurred from an existing circuit
• Notifiable, so not booked through JACK: a new circuit from the consumer unit, a transformer on a new way in it, a consumer unit change, and any electrical addition or alteration within a bathroom's zones

• Wi-Fi at the front: UK versions of the Nest Doorbell (battery), Nest Cam (battery), Nest Cam with floodlight and Nest Protect join 2.4 GHz Wi-Fi only, and Ofcom notes that brick internal walls make Wi-Fi harder to spread, so the signal is checked where the device will sit
• Boiler cupboards: Google's UK guide asks for at least 30 cm of space either side of a 3rd gen Heat Link and keeps the thermostat within 30 m of it, which a tight cupboard or a loft boiler may not allow
• Flats: a front door onto a shared corridor is normally a fire door, and the gov.uk fire door guidance says changes to it should have the agreement of the building's Responsible Person, so a Nest doorbell goes on the wall beside it, with consent
• Leasehold, rented and listed homes: Google's UK installation terms put getting consents, such as a landlord's permission or listed building consent, on the customer before work starts

• Activity zones, so the camera wakes for your path and not for every passer-by on a London pavement
• The angle: looking down on your own door, drive or garden rather than into a neighbour's window or garden
• Audio: off unless you need it; in 2021 a County Court found that a neighbour's doorbell and cameras recording audio far beyond his own property breached data protection law
• Your side of it: telling the neighbours, a small notice where a camera sees the street, and deleting clips you no longer need

A vetted pro prices your Nest job from the model and your photos, and the JACK app shows that fixed price before you book.

On heating, where the Heat Link goes moves the price most: a 3rd gen Heat Link in place of a programmer on the same wiring is the plainest job, while hot water on a cylinder, an S-plan or Y-plan wiring centre or an old wired thermostat to take out of the circuit adds to it. Anything that must be wired at the boiler itself is left out of the price and handed to a Gas Safe registered engineer.

On doorbells and cameras, power comes first: a battery doorbell or Nest Cam with a good 2.4 GHz signal is the lightest job, a weak bell transformer is swapped on its existing supply, and the Nest Cam with floodlight is priced as electrical work on your outside-light circuit. For a camera high on a gable, your pro can ask another pro on JACK to help through the Pro2Pro feature.

JACK does not sell devices, so the Nest kit is yours to buy. Accessories the job needs, such as a bell transformer, a fused spur or an outdoor junction box, are agreed and added at cost before you book, and so is parking where it has to be paid for. Several devices go on one booking for one fixed price. Prefer to pay for time? As a guide, hourly hire is typically £45–£95 per hour for smart home work and £55–£110 per hour for electrical work, and a full-day handyman booking is a flat £350–£400 for up to 8 hours on site.