Hive · Thermostats
Hive Active Heating 2 Installation in London
Updated
Hive Active Heating 2 is the name many homes still know their Hive by: the Hive 2 thermostat, launched in 2015, with buttons on older units and a touch interface on newer ones, plus a wired version. A vetted JACK pro moves, refits, re-pairs or replaces it with a current Hive model, for a fixed price before you book.
In short
Yes. A JACK pro in London works on older Hive Active Heating 2 systems: moving the thermostat to a better room, refitting it after decorating, re-pairing it with a new Hive Hub, or swapping it for a current Hive Thermostat or Mini using the app's replace option. Work at the existing receiver stays on the existing wiring; anything at the boiler itself needs a Gas Safe engineer.
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Start the request here, then add extra photos or videos from the JACK app if the pro needs more detail.
Active Heating 2: key facts
- Hive model codes
- Active Heating 2: SLT3 and SLT3b. Active Heating 2 Wired: SLT5. The first Hive thermostat was SLT2 Source: Hive smart heating guides (model list)
- Power
- Wireless models: 4 × AA batteries. Wired model: 3 × AA, and it must stay on its wall fitting Source: Hive Thermostat product page and FAQ (hivehome.com)
- Receivers
- Single channel (SLR1) for combi boilers, dual channel (SLR2) for boilers with a hot water cylinder Source: Hive Thermostat user guide, May 2026 (PDF)
- Hubs
- The original Nano 1 hub was switched off by Hive on 1 August 2023; the current Nano 3 hub connects by Ethernet or Wi-Fi Source: Hive product news (discontinued products)
- Replacing it
- In the Hive app, 'Add' then 'Upgrade or Replace' walks through swapping in a new thermostat Source: Hive Thermostat Mini product page (hivehome.com)
Model details come from Hive's UK product pages, user guides and installation guides. Hive can change a design or what comes in the box, so check your own kit and send a photo of it with your request. Last checked 31 October 2026.
How the Active Heating 2 is powered and mounted
Hive's support pages describe the Hive 2 thermostat as launched in 2015 and changed a little over the years, so there are units with physical buttons and units with a touch interface. Hive's guides still call the system Active Heating, and the installation is the same as today's in principle: a battery thermostat talking to a mains receiver by the boiler, with a hub at the router.
The wired Active Heating 2 thermostat (SLT5) is different: it takes three AA batteries but is wired to its wall plate, and Hive says it must always be fitted to that wall fitting. Moving it means moving its cable, which the pro prices from a photo.
Older Hive guides said some receivers could clip onto certain existing timer backplates. Hive's 2025 installation guide no longer mentions that, so the pro plans for a full swap of the old receiver.
What the pro checks first
- The thermostat and receiver model codes, from photos or the device
- Whether the hub is a switched-off Nano 1 or a current model
- That the existing receiver still powers up and switches the boiler
What the pro does on the Active Heating 2
- Existing receiver checked: lights, wiring and the fused spur
- Thermostat moved, refitted or replaced, and placement checked against Hive's rules
- New hub set up at the router if the old one has gone
- Devices re-paired and the old thermostat removed from the app
- Boiler tested from the receiver after any wiring work
Before you book: what to send
- A photo of the thermostat, and the back of it if you can see a model code
- A photo of the receiver by the boiler and of your hub
- What you want: moved, re-paired after a fault, or replaced with a new model
How Hive installation is priced
A vetted pro prices your job from photos of the boiler, your existing controls and the Hive kit, and the JACK app shows you that fixed price before you book.
Full pricing guide for Hive installationFrequently asked questions
My Hive hub stopped working in 2023. What do I need?
If it was a first-generation Nano 1 hub, Hive switched those off on 1 August 2023. A current Hive Hub, set up at the router and paired with your thermostat and receiver, brings the app back; the thermostat and receiver can usually stay.
Can I keep my old receiver and just change the thermostat?
It depends on the receiver model, and Hive publishes no compatibility list. Hive's app has an upgrade or replace option for swapping in a new thermostat, and the pro checks the receiver model from your photos first, because the receiver also decides whether hot water and OpenTherm are available.
How much does Hive Active Heating 2 installation cost in London?
It is a fixed price for your Active Heating 2, worked out by a vetted pro from the model, a photo of where it is going and what power is there now, and shown in the JACK app before you book. Other devices can go on the same booking for one price. If you would rather pay for time, hourly hire for smart home is typically £45–£95 per hour as a guide.
Often booked together
Thermostat installation
The current Hive Thermostat with the dial: receiver wired in, boiler tested, thermostat placed and paired.
Thermostat Mini installation
Hive's dial-free thermostat: receiver fitted, Mini placed and paired, schedules set up in the app.
Hub installation
The Hive Hub (Nano 3): placed for range, connected, and paired with every Hive device.
More Hive thermostats
Hive thermostat installation
The Hive Thermostat, the Thermostat Mini and older Hive thermostats: fitted, placed well and paired.
All Hive installation guides
Hive Thermostat, Mini, receiver, hub and radiator valves fitted in London by vetted pros who work at the wall, not inside the boiler. Fixed price first.
Related services in London
Sources
The device facts and rules on this page come from these pages, checked on 31 October 2026.
- Hive smart heating guides (model list)
- Hive support: identifying your Hive Thermostat model
- Hive Active Heating 2 installation guide (PDF)
- Hive Active Heating 2 Wired Thermostat user guide (PDF)
- Hive product news (discontinued products)
- HSE L56: Safety in the installation and use of gas systems and appliances (code of practice)
- Gas Safe Register: who can legally work on a gas appliance (factsheet)
Jack All Trades (JACK) is an independent London service. It is not part of, affiliated with or endorsed by Hive, Centrica or British Gas. Hive product names are used only to describe the devices JACK pros install, and prices are set by JACK pros, not by Hive. JACK pros do not work inside boilers or claim Gas Safe registration.
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Send photos of your boiler, your current controls and your Hive kit in the JACK app, see a fixed price from a vetted local pro, and pick a time that suits you.
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