Heat Alarms

A heat alarm is a fire detector that sounds when the temperature around it rises past a fixed point or climbs unusually fast, instead of reacting to smoke. That makes it the go-to choice for kitchens, garages and lofts. We stock mains and battery heat alarms from Firehawk, Hispec and X-Sense, including RF-linked models and fast-fix mains units with rechargeable lithium back-up.

Matching bases and deep pattresses are available too. Trade account holders get trade pricing, and we deliver in-stock orders next working day across NI and ROI when placed by 5pm.

SMK4896 In-Stock

Deep Pattress for FIREX Mains Alarms

£2.57 inc. VAT

VST-BASE In-Stock

Base For SGD1236 & E240VHD

£3.60 inc. VAT

FH450RB In-Stock

Firehawk Mains Powered Heat Alarms Battery Rechargeable

£12.00 inc. VAT

HSSA/HE/FF In-Stock

Hispec Interconnectable Fast Fix Mains Heat Alarm with 9v Backup Battery Included

£20.33 inc. VAT

E240VHD In-Stock

240V Heat Alarm with Battery Back-up

£20.40 inc. VAT

HSSA/HE/FF10 In-Stock

Interconnectable Fast Fix Mains Heat Detector with 10yr Rechargeable Lithium Battery Backup

£24.00 inc. VAT

FHH10-RF In-Stock

Firehawk Battery RF-link Heat Alarm

£27.60 inc. VAT

HSA/BH/RF10-PRO In-Stock

Radio Frequency Lithium Battery Heat Detector (10 year Sealed Lithium Battery)

£27.96 inc. VAT

SBS50 In-Stock

X-Sense ProConnected Home Base station

£34.20 inc. VAT

KF30 Ships in 3-5 days

Mains Powered Heat Detector

£41.74 inc. VAT

KF30R In-Stock

Mains Powered Heat Alarm with Rechargeable Back-Up Battery

£44.40 inc. VAT

HSSA/HE/RF10-PRO Ships in 3-5 days

Radio Frequency Mains Heat Detector with 10yr Rechargeable Lithium Battery Backup RF10-PRO

£62.15 inc. VAT

How to choose the right heat alarm

Heat alarms are rarely fitted on their own. They usually form part of an interlinked system with smoke alarms, so the right model depends on the rest of the installation as much as the room it protects.

Power options

Mains with rechargeable lithium back-up: suited to new builds and rewires; the back-up cell recharges from the supply.
Mains with 9V battery back-up: a familiar option where the back-up battery is replaced periodically.
Sealed lithium battery: no wiring needed, ideal for retrofits; RF versions interlink wirelessly.

Interlinking with smoke alarms

To make every device sound together, heat alarms must be from the same range as the smoke alarms and CO alarms they connect to. Wired interlink uses a dedicated core in the cable; radio-frequency alarms such as the Firehawk RF-link or the X-Sense ProConnected range pair wirelessly, with the X-Sense home base station adding app notifications.

Installation tips

Fit to the ceiling, generally near the centre of the room, and away from the cooker hob or boiler flue where the manufacturer advises.
Use the correct mounting base or deep pattress for the alarm you are fitting.
Run mains alarms from a suitable circuit and follow current wiring regulations (BS 7671) and the manufacturer's instructions.
Test after installation and remind occupants to test regularly.

Where a single unit covering both smoke and heat is preferred, see our combination alarms.

Ordering from Meteor Electrical

Order by 5pm on a weekday for next working day delivery across Northern Ireland and the Republic of Ireland, or allow 3–5 working days for Great Britain. Delivery is free over £30 / €35 ex VAT, and you can call the team on 028 8675 1515 for help with stock.

FAQ's Ask Your Own Question

Should I use a heat alarm or a smoke alarm in the kitchen?: Use a heat alarm in the kitchen. Smoke alarms cause frequent false alarms from cooking, while a heat alarm responds to a rapid rise in temperature or a fixed high temperature, so it detects a kitchen fire without being set off by toast or steam.
How does a heat alarm work?: A heat alarm sounds when it detects a rapid rise in temperature or when the room reaches a fixed temperature, typically around 58°C. Because it does not react to smoke or steam, it is the right choice for kitchens, garages and utility rooms where a smoke alarm would give false alarms.
Should heat alarms be interlinked with smoke alarms?: Yes. Interlinking heat, smoke and carbon monoxide alarms means that when one alarm is triggered, every alarm in the property sounds, giving everyone the earliest possible warning. Interlinked alarms are required in all homes in Scotland and in many new builds and rented properties elsewhere.
Mains-powered or battery heat alarms?: Mains-powered heat alarms with a rechargeable or sealed long-life back-up battery are the usual choice for new builds, rewires and rented homes, because they keep working during a power cut and do not rely on battery changes. Mains-powered alarms should be installed by a qualified electrician.
At what temperature does a heat alarm go off?: Many domestic heat alarms are designed to activate at around 58°C, while some commercial heat detectors use fixed thresholds such as 60°C or 75°C or respond to a rapid rate of rise. The exact trigger point varies by model, so check the manufacturer's data sheet for the alarm you are fitting.
Where should a heat alarm not be installed?: Heat alarms should not be used as the main protection in bedrooms, hallways or escape routes, because they react later than smoke alarms. Avoid mounting them directly above cookers, next to boiler flues, close to lights or in corners where air does not circulate. Follow the manufacturer's siting distances and current regulations for your property type.
Can I add a heat alarm to an existing smoke alarm system?: Yes, as long as the heat alarm is from the same manufacturer and range as the existing alarms. For wired systems you will need an interlink connection to the circuit; for RF systems, the new alarm is paired to the existing devices. Check the brand's compatibility guidance, and if the old alarms are near the end of their life, consider replacing the set.