NICEIC Approved · Updated August 2026

Smoke Alarm Installation Liverpool

New smoke alarms supplied and fitted across Liverpool. Wired to the mains. When one alarm sounds, they all sound. A heat alarm for the kitchen. Certificates for landlords included.

£270Replace 3 alarms
£450New install, 3 alarms
£90Per alarm replaced
5.0 ★286 Reviews
NICEICApproved Contractor
10 YearSensor Life

How Much Does Smoke Alarm Installation Cost in Liverpool?

Two fixed price packages. Both supplied and fitted with the certificate included.

Already have alarms on your ceilings? You want the £270 replacement package. No alarms there at all? You want the £450 new install.

NEW INSTALL
No Existing Alarms
Radio frequency interlink, minimal damage
£450
3 alarms · £150 per alarm fitted
  • ✓ 2 smoke alarms for the hall and landing (HiSpec RF10-PRO)
  • ✓ 1 heat alarm for the kitchen (HiSpec RF10-PRO)
  • ✓ The alarms talk to each other wirelessly
  • ✓ 10 year sealed batteries, nothing to change
  • ✓ Meets BS 5839-6, the British Standard
Book New Install
CO PROTECTION
Carbon Monoxide Alarms
Required near fixed combustion appliances
30
Combined heat and CO alarm
  • ✓ Boiler in the kitchen: combi heat and CO alarm
  • ✓ Boiler elsewhere: separate CO alarm, priced to the job
  • ✓ Meets the 2022 landlord regulations
  • ✓ Fitted on the same visit
Ask About CO

Extra alarms on the RF package are £150 per alarm when the always-on power feed can be taken from a nearby ceiling light. Extra alarms on a wired system are priced per job. The interlink cable must reach every new alarm. That keeps them working as one family. Some homes carry the permanent live at the switches, not the light fittings. That changes the RF installation. We price those on a free site visit.

Looking for a panel fire alarm system for a shop, office or business? See our fire alarm systems and prices below ↓

When Do Smoke Alarms Need Replacing?

Turn your smoke alarm over. There is a replace by date printed on the back. It is normally 10 years after the year it was made.

The 10 year rule

Smoke and heat alarm sensors degrade over time. After 10 years the sensor can miss a real fire or trigger false alarms. The alarm may still beep on test. That only proves the sounder works, not the sensor. Past the date on the back, the unit needs replacing.

The yellow tell

Old alarms discolour. If your smoke alarms have yellowed with age, they are almost certainly past their replace by date. We see this in homes across Liverpool every week. A yellowed alarm is a tired alarm.

Why landlords replace on time

Landlords must keep working smoke alarms on every storey. An out of date alarm is a compliance risk and shows up on inspections. Replacing all three alarms costs £270 and resets the clock for another 10 years.

What Does the Law Say About Smoke Alarms?

The rules come from the Smoke and Carbon Monoxide Alarm (England) Regulations and the Building Regulations. Here is what applies to you.

Landlords and HMOs

At least one working smoke alarm on every storey used as living accommodation. A carbon monoxide alarm in any room with a gas boiler or similar fixed appliance. Gas cookers are excluded. These rules were tightened in 2022. Mains interlinked alarms to BS 5839-6 Grade D are the standard we fit.

Homeowners

No law forces you to upgrade existing alarms in your own home. New builds and full rewires must have mains powered interlinked alarms under the Building Regulations. Most homeowners upgrade for one simple reason. Interlinked alarms all sound together, so an alarm in the kitchen wakes you in the bedroom.

HMO landlords: which system does your HMO need?

Your licence conditions set the exact requirement. Here is the rule of thumb. Most one and two storey shared houses need interlinked mains smoke and heat alarms. That is what we fit, from £90 per alarm. Larger HMOs, usually three storeys or more, often need a panel fire alarm system with call points. See our 2 zone system below, from £2,999 fitted and commissioned. Not sure which you need? Send us your licence conditions or call us. We will tell you straight, and we install both. Our HMO fire alarm requirements guide explains the rules in full.

Read our guide to HMO fire alarm requirements in Liverpool for houses in multiple occupation, where the council can require more than standard smoke alarms.

Wired Interlink or Radio Frequency: Which Is Right for Your Home?

Interlinked means every alarm sounds together. There are two ways to link them. Your house decides which one makes sense.

Wired interlink (joined by a cable)

  • Alarms connected by cable
  • Best when alarm cabling already exists
  • £90 per alarm supplied and fitted
  • Aico Ei146E and Ei144E units
  • Grade D2 with battery back-up

Radio frequency (joined wirelessly)

  • Alarms link together wirelessly
  • Best when no alarms or cables exist
  • Each alarm only needs a 240v supply
  • Minimal damage to walls and ceilings
  • £150 per alarm supplied and fitted
  • Grade D1 with 10 year sealed lithium back-up

The honest caveat on RF pricing

The £450 package has one assumption. Each alarm needs an always-on power feed. Electricians call this the permanent live. In most homes we can take it from a nearby ceiling light. Some Liverpool homes keep this feed at the light switches instead. Then a cable must run from a switch to each alarm. The job changes and so does the price. We confirm which type your home is on a free site visit. No surprises on the day.

Know which system your home needs?

What Happens on Installation Day?

Most three alarm jobs are done in a single visit of 1 to 2 hours.

1

Positioning check

Smoke alarms go on the hallway and landing ceilings. The kitchen gets a heat alarm instead. A smoke alarm in a kitchen would go off every time you cook. We follow BS 5839-6 placement rules.

2

Fit and connect

Old units removed on replacement jobs. New alarms wired to the mains and interlinked, by cable or by radio frequency.

3

Test as a family

Every alarm is tested individually and as an interlinked set. One alarm triggers, all alarms sound.

4

Certificate emailed

Your installation certificate is emailed within 24 hours. Landlords get the paperwork their records need.

Fire Alarm Systems for Businesses and Larger HMOs

Shops, offices, units and bigger HMOs need more than smoke alarms. They need a panel system. A control panel on the wall. Detectors that are also sounders. Break glass call points by the exits. We design, install and commission these to BS 5839-1.

£2,9992 zone system, supplied, fitted and commissioned
  • ✓ 1 x TwinflexPro2 2 zone control panel (Fike)
  • ✓ 7 x combined detector sounders (Twinflex Multipoint ASD)
  • ✓ 2 x manual call points with covers, fitted by the exits
  • ✓ Designed and commissioned to BS 5839-1
  • ✓ Commissioning certificate included

Bigger premises

More zones, more devices, more floors? Larger systems are quoted after a free site survey. We size the system to your building and your fire risk assessment.

Fire alarm servicing

Already have a system? We service and maintain existing fire alarm systems. Servicing is quoted per site. Call us with your panel type and building size.

What Liverpool Customers Say

Real reviews from real customers. 5.0 across 286 reviews.

★★★★★

Can't thank the lads enough for sorting our office out at short notice. Massive thanks to Michael and Tom.

A
Alan GVerified Google review
★★★★★

Brilliant service from start to finish. Turned up when they said they would and the work was spot on. Would recommend to anyone.

S
Samantha TVerified Google review
★★★★★

Michael works to a standard, not a price. Clean, professional and everything explained properly. Great local firm.

A
Alice KVerified Google review
5.0
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Smoke and Heat Alarm Questions, Answered

REPLACEWhen do smoke alarms need replacing?

Every alarm has a replace by date printed on the back. It is normally 10 years after the year it was made. Past that date the sensor is no longer reliable. The alarm may still beep on test. That proves the sounder, not the sensor. Yellowed alarms are usually well past their date.

COSTHow much does smoke alarm installation cost in Liverpool?

Replacing three existing mains alarms costs £270. That is £90 per alarm supplied and fitted. You get two Aico Ei146E optical smoke alarms. Plus one Aico Ei144E heat alarm. No existing alarms or cables? A new installation costs £450. That covers three radio frequency interlinked alarms. It works out at £150 per alarm.

WHO FITSWho fits smoke alarms, an electrician or a fire alarm company?

Mains powered smoke and heat alarms connect to your lighting circuit. That makes them an electrician's job. Fire alarm companies install commercial panel systems for businesses. For a house or HMO you need a qualified electrician. The work follows BS 5839-6.

LANDLORDDo rented homes need mains powered smoke alarms?

Yes, on every storey. The law requires a working smoke alarm on each storey of a rented home. We fit mains interlinked alarms to BS 5839-6 Grade D. That is the landlord standard. New builds and rewires must have mains interlinked alarms. The Building Regulations require it.

CODo landlords need carbon monoxide alarms?

Yes. The rules were tightened in 2022. A carbon monoxide alarm is required in any room with a gas boiler or similar fixed appliance. Gas cookers are excluded. Boiler in the kitchen? We fit a combined heat and CO alarm for £30 more. Boiler in a bedroom or cupboard? We fit a separate CO alarm, priced to the job.

INTERLINKWhat is the difference between wired and radio frequency interlink?

Interlinked means every alarm sounds together. Wired interlink uses a cable. It suits homes that already have alarm cabling. Radio frequency interlink is wireless. Each alarm only needs a 240v supply. RF keeps damage to a minimum. It is the best route when no alarms exist.

HMOWhich fire alarm system does my HMO need?

Your HMO licence conditions set the exact requirement. As a rule of thumb, most one and two storey shared houses need interlinked mains smoke and heat alarms. Larger HMOs, usually three storeys or more, often need a panel system with call points. Send us your licence conditions and we will tell you which applies. We install both. Our HMO fire alarm guide covers the rules in detail.

COMMERCIALDo you install commercial fire alarm systems?

Yes. Our 2 zone TwinflexPro2 system costs £2,999 supplied, fitted and commissioned to BS 5839-1. That includes the control panel, seven combined detector sounders and two manual call points. Larger systems are quoted after a free site survey. We also service existing fire alarm systems. See the fire alarm systems section for details.

Smoke Alarm Installation Near You

We fit smoke and heat alarms across Liverpool and the surrounding areas.

Fire Alarm Protection for Liverpool Homes

Ideal Electrical Solutions supplies and fits mains interlinked smoke alarms and heat alarms across Liverpool. Most people call this fire alarm installation. The correct name for domestic systems is smoke and heat alarm installation to BS 5839-6. Whatever you call it, the goal is the same. Every alarm sounds together and your family gets the earliest possible warning.

We fit Aico alarms when replacing existing wired systems. We fit HiSpec radio frequency alarms in homes with no alarms at all. Both carry 10 year sensors. Both are mains powered with battery back-up. As a local Liverpool electrical team we install to the standard, test every alarm as an interlinked family, and email your certificate within 24 hours. Landlords across Liverpool use us to stay compliant with the smoke and carbon monoxide alarm regulations.

Book Your Smoke Alarm Installation

Fixed prices. Fitted in 1 to 2 hours. Certificate emailed within 24 hours.

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