All Bathroom fittersBath ResurfacingBathroom DesignBathroom InstallationBathroom RepairBathroom TilingComplete Bathroom RefurbishmentWet Room InstallationAll Blacksmith / Metal workersDecorative Ironmongery and MetalworkMetal Kitchen WorktopsMetal StaircasesSecurity FencingSecurity Gates & BollardSecurity GrillWooden / Metal / Wire FencesZinc / Metal RoofAll BricklayersChimney Building / RepairGarden WallPizza OvenPointing / RepointingStonework / Stone CladdingAll BuildersCavity Wall InsulationCellar & Basement ConversionChimney Building / RepairCladdingConservatoryDisability Access InstallationGarage ConversionGarden Office / Studio ConstructionGroundwork / FoundationsHome ImprovementsHouse ExtensionLoft ConversionLog Cabins / Timber Framed BuildingMetal StaircasesMould / Damp ControlPartition WallPeriod / Listed Building WorksPizza OvenPorch / CanopyPost Construction CleaningSteel Fabrication / Structural steelworkSuspended CeilingUnderfloor InsulationUnderpinning / Piling / FoundationsWooden StaircasesAll Carpenter / JoinersBespoke FurnitureBespoke KitchensBuilt-In FurnitureFitted Bedrooms / WardrobesFlat Pack Furniture AssemblyFloor Sanding & FinishingGarden Shed / PlayhouseGeneral Fitted FurnitureHot Tub Installation / RepairLaminate FlooringLog Cabins / Timber Framed BuildingPeriod / Listed Building WorksRadiator CoversSkirting Board InstallationSolid Wood FlooringWood Floor Sanding / StainingWooden Casement WindowWooden Cladding /Fascias/ SoffitsWooden DeckingWooden Doors - ExternalWooden Doors - InternalWooden Sash WindowWooden ShutterWooden StaircasesAll CCTV / Satellites / AlarmsAerial & Satellite Dish InstallationAerial InstallationBurglar, Security & Intruder Alarm InstallationCCTV InstallationDigital Home NetworkFire Alarm InstallationSound & Audio Visual InstallationAll CleanersCarpet CleaningCommercial Window CleaningConservatory Cleaning / MaintenanceDeep Cleaning - CommercialDeep Cleaning - DomesticDomestic House Cleaning: One OffDomestic House Cleaning: RegularEnd of Tenancy CleaningOffice / Commercial CleaningOven CleaningPost Construction CleaningRepeat Wheelie Bin CleanWindow CleaningAll Drainage SpecialistsDrains - Installation / Unblocking / CleaningSeptic Tanks - Installation / Emptying / CleaningAll Driveway paversBrick / Block PavingConcrete DrivewayResin DrivewayTarmac DrivewayAll ElectriciansAccess Control / Door EntryAerial & Satellite Dish InstallationAir Conditioning / RefrigerationCarbon Monoxide Alarms - InstallationDomestic Appliance RepairElectric Car Charging Point InstallationElectric Oven / Hob - InstallationElectric Underfloor HeatingElectrical Inspection Condition ReportElectrical Installation / TestingEmergency ElectricianExternal LightingHot Tub Installation / RepairInternal LightingLandlord Reports / Safety ChecksSmoke Alarm - InstallationAll Floor fittersCarpet FittersElectric Underfloor HeatingExternal TilingFloor Sanding & FinishingFloor TilingLaminate FlooringLinoleum FlooringPlastic / Rubber FlooringPolished ConcreteScreedingSolid Wood FlooringStone / Concrete PavingVinyl FlooringWater Underfloor HeatingWooden DeckingAll Gardener / Landscape gardenersArtifical Grass / Astro TurfBrick / Block PavingGarden ClearanceGarden DesignGarden MaintenanceGarden Shed / PlayhouseGarden WallLandscapingLawn Care Services - Grass Cutting / Turfing / SeedingPlantingPond & Water FeatureRepeat Garden MaintenanceSoil Irrigation / DrainageStone / Concrete PavingTree Surgery / ConsultancyWooden / Metal / Wire FencesWooden / Metal GatesWooden DeckingAll Gas / Heating engineersElectric Boiler - InstallationElectric Boiler - RepairElectric Boiler - ServiceGas Boiler - InstallationGas Boiler - RepairGas Boiler - ServiceGas Cooker / Hob - InstallationGas Cooker / Hob - RepairGas FireHeat Pump (Air source/ Ground Source)Hot Water Tank/Appliance Tank ThermostatsOil-Fired BoilerRadiatorSolar Panel InstallationWater Underfloor HeatingAll HandypersonsBlind / Curtain / Shutter - InstallationCat Flap - InstallationDomestic Appliance RepairElectric Oven / Hob - InstallationFlat Pack Furniture AssemblyHome Maintenance / RepairJet / Power WashingPerspex / Protective ScreensSkirting Board InstallationAll Kitchen SpecialistsBespoke KitchensComplete Kitchen RefurbishmentFitted KitchensKitchen Design / InstallationKitchen TilingKitchen Worktops - StoneLaminate / Wooden Kitchen WorktopsMetal Kitchen WorktopsAll LocksmithsBurglar RepairsDoor OpeningDoor ReplacementEmergency / 24 Hour LocksmithLock Fitting / RepairAll Loft Conversion SpecialistsHome ImprovementsLoft ConversionMetal StaircasesVelux / Skylight WindowWooden StaircasesAll Painter and decoratorsDoor / Window PaintingExternal Wall PaintingInternal Painting & DecoratingMould / Damp ControlWall Murals / Paint EffectsAll Pest ControlersCommercial Pest ControlResidential Pest ControlAll Plasterer / RenderersDecorative Cornicing / PlasterworkDry Lining & Plasterboard - InstallationDry Lining & Plasterboard - RepairExternal RenderingExternal Wall InsulationInternal RenderingPebble DashingPlaster SkimmingPolished / Other Plaster FinishScreedingStandard CovingAll PlumbersBathroom InstallationBathroom, Kitchen and WC PlumbingEmergency / 24 Hour PlumberGuttering and Rainwater PipeHot Tub Installation / RepairPlumbing Repair & MaintenancePower Showers and PumpRadiatorSolar Panel InstallationSprinkler SystemWater Tanks and Immersion HeaterWater Underfloor HeatingAll Removal ServicesHouse ClearanceHouse RemovalsMan/Woman with a VanSpecialist RemovalsStorageWaste RemovalAll Renewable Energy SpecialistsElectric Car Charging Point InstallationHeat Pump (Air source/ Ground Source)Solar Panel Cleaning & RepairSolar Panel InstallationAll RoofersChimney Building / RepairFlat Roof - Installation / RepairGuttering and Rainwater PipeLeadworkRoof CleaningRoof InsulationSlate & Tiled RoofThatched RoofuPVC Fascias / Soffits / CladdingVelux / Skylight WindowWooden Cladding /Fascias/ SoffitsZinc / Metal RoofAll Security systems / AlarmsAccess Control / Door EntryBurglar, Security & Intruder Alarm InstallationCCTV InstallationFire Alarm InstallationGarage Doors - Installation / RepairLock Fitting / RepairRoller Shutters - Installation / RepairSecurity FencingSecurity Gates & BollardSecurity GrillAll Specialist TradespersonsAerial & Satellite Dish InstallationAir Conditioning / RefrigerationBrick / Block PavingBrick & Stone CleaningCellar & Basement ConversionDamp ProofingDemolitionDigital Home NetworkDisabled Access / Mobility ServiceFireplaceScaffoldingSound & Audio Visual InstallationSound ProofingStored GasStored OilThermal InsulationTimber Preservation, Woodworm & RotWaste RemovalWater Underfloor HeatingWhole Internal RefurbishmentAll Stoneworker / StonemasonsBrick & Stone CleaningFireplaceGarden WallKitchen Worktops - StoneLandscapingPolished ConcreteStone / Concrete PavingStonework / Stone CladdingAll Swimming Pool SpecialistsSwimming Pool DesignSwimming Pool InstallationSwimming Pool MaintenanceAll TilersExternal TilingFloor TilingWall TilingAll Traditional CraftspersonsBespoke FurnitureDecorative Cornicing / PlasterworkDecorative GlazingDecorative Ironmongery and MetalworkFireplacePeriod RestorationStonework / Stone CladdingThatched RoofWall Murals / Paint EffectsWooden Doors - InternalWooden ShutterAll Tree SurgeonsCrown ReductionCrown ThinningStump GrindingTree FellingTree Surgery / ConsultancyAll Window fitter / Conservatory installersConservatoryConservatory Cleaning / MaintenanceDecorative GlazingPerspex / Protective ScreensSingle / Double GlazinguPVC Windows & DoorVelux / Skylight WindowWooden Casement WindowWooden Doors - ExternalWooden Sash WindowAsk a tradespersonCost guidesHomeowner advice centreInspiration centreTrade advice centreTrends reportLondonBerkshireBuckinghamshireEast SussexHampshireIsle of WightKentOxfordshireSurreyWest SussexBristolCornwallDevonDorsetGloucestershireSomersetWiltshireBedfordshireCambridgeshireEssexHertfordshireNorfolkSuffolkHerefordshireShropshireStaffordshireWarwickshireWest MidlandsWorcestershireDerbyshireLeicestershireLincolnshireNorthamptonshireNottinghamshireRutlandEast Riding of YorkshireNorth YorkshireSouth YorkshireWest YorkshireCheshireCumbriaGreater ManchesterLancashireMerseysideDurhamNorthumberlandTyne & WearClwydGwyneddGwentMid GlamorganSouth GlamorganDyfedWest GlamorganPowysAyrshire and ArranBerwickshireCity of EdinburghDumfriesDunbartonshireLanarkshireMidlothianRenfrewshireRoxburgh- Ettrick and LauderdaleThe Stewartry of KirkcudbrightTweeddaleWigtownAberdeenshireAngusCity of DundeeCity of GlasgowClackmannanEast LothianFifePerth and KinrossStirling and FalkirkWest LothianArgyll and ButeBanffshireCaithnessCity of AberdeenInvernessKincardineshireMorayNairnOrkneyRoss and CromartyShetlandSutherlandWestern IslesAntrimArmaghDownFermanaghLondonderryTyrone

The quick way to find a local Carbon Monoxide Alarms - Installation specialist in Harrow

Post your job for free. Get quotes. Read reviews.

Over 10,000 rated tradespeople
are ready to help you get your job done

Over 3 million happy homeowners
have found a quality tradesperson

Over 1 million ratings
with 88,000 5* ratings in the last 12 months

Join our group of happy customers

Thousands of 5 star reviews

Read real reviews from customers about their service experiences.

Excellent service from start to finish from Daniel. Quick and professional

Alex

Very Professional. Really happy to help. Very polite. Did a very good job fitting our new light. Would recommend!!

Anne

Steve and Daniel were quick and efficient came out at short notice found and fixed the fault within the hour Definitely recommend Will be using them again Debbie and lee

Debbie

Browse Carbon Monoxide Alarms - Installation specialists

Take a look at our Carbon Monoxide Alarms - Installation specialists profiles, read reviews and request quotes directly.

Owen Joseph avatar

Owen Joseph

Carbon Monoxide Alarms - Installation

I am a fully qualified plumbing and heating engineer. With many years experience. I currently work on domestic and commercial systems specialising in boiler breakdown and servicing. I also have two more plumbing and heating engineers, two air conditioning engineers and two electricians. All of us are Fully qualified having carried out time served apprenticeships. All of us are qualified to a level 3 standard and beyond. The range of services we can offer are consultancy, installation, maintenance and repair of all types of systems related to our trades.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Ian on 20/10/2024

Excellent service, the problem was tricky as the boiler had suddenly failed with a blank control panel (fuse ok). Initial testing failed to find a fault but after some deep system checks the cause was discovered and he left me with a fully working system. He went the extra mile, definitely use again.

At The Ruby Team we value great work and our word. Reliable, trustworthy and punctual tradesmen is what we are. With fantastic quality of work and enthusiasm we really get the job done to a 5* level. With 7 years in the field as a multi-tradesman I’ve accumulated a lot of knowledge in many sectors. No job is too small nor too big for us and we cover all areas in London and Essex. We follow a CLAYGO service which is a protocol we follow to ensure your house is as clean as when we entered it. #Residential. #Commercial. #Landscaping.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Maria on 27/5/2026
Nexis One avatar

Nexis One

Carbon Monoxide Alarms - Installation

maintaince contractor muliskilled

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Dawn on 15/4/2020

Excellent service Will recommend to everyone

RMT DESIGN AND BUILD LTD avatar

RMT DESIGN AND BUILD LTD

Carbon Monoxide Alarms - Installation

RMT DESIGN AND BUILD LTD

NSE CARPENTRY LTD avatar

NSE CARPENTRY LTD

Carbon Monoxide Alarms - Installation

We are a team with over 10 years experience in the building industry, specialists in kitchen and bathroom fitting, as well as all aspects of interior finishing. Our NVQ qualified team, professionally deliver high quality projects on time. Check our instagram @nse_carpentry

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Grant on 19/4/2025

Still in the process of getting the job done but Alex has been reliable and honest throughout. I have every confidence that the job will be completed at the price quoted (lower than other quotes) and to an excellent standard.

Specialised in electrical installation for domestic and commercial. More than 3 years experience

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by pauline on 7/2/2023

Arrived on time, very professional, no problems. Extremely tidy and very polite. Highly recommend, and I will be using them again for future work. Thank you very much guy's Regards

Green Build UK avatar

Green Build UK

Carbon Monoxide Alarms - Installation

Green home build is a London-based construction company delivering high-quality residential and commercial projects in the premium segment. We specialise in full-scale new builds, complete refurbishments, and carefully executed commercial spaces.From planning permissions and technical drawings to final finishes and interior fit-out, our team manages each stage with precision and continuity. Whether it’s sourcing structural solutions, coordinating specialist trades, or moving in the final piece of furniture — we make sure every detail is in place so that our clients can walk into a space that’s ready to live in.

Newlek Services is a small electrical contracting company with over 30 years experience in many electrical fields. Commercial, domestic and industrial. Installation and maintenance. Home and office networks.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Delores on 5/6/2026
E Electrical avatar

E Electrical

Carbon Monoxide Alarms - Installation

Hi, I’m a skilled electrical and general handyman with almost a decade of domestic and commercial experience, including work on 25kV railway systems. I specialise in high-quality electrical installations, fault finding, and repairs, alongside a wide range of handyman services such as property maintenance, minor repairs, and installations. Safety-focused, reliable, and detail-driven, I deliver clean, professional results you can trust.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Dennis on 10/3/2026
Vasile Alexandrescu avatar

Vasile Alexandrescu

Carbon Monoxide Alarms - Installation

Hello,I am Vasile! If u need any type of building work to be done please feel free to contact me and u will have Free quotes and good advice! Thanks and see u on the job!

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Dan on 23/4/2019

Vasile and his team are working to a very high standard on tenant rental bathroom, made several recommendations on how to improve plumbing, fitted 15mm copper piping and large number of other improvements including carpentry and electrical wiring to best working guidelines, good job and a fair price, thank you

Q Cama avatar

Q Cama

Carbon Monoxide Alarms - Installation

Hi, I do high quality Carpantery work. -Fitting doors -kitchen fitting -wooden floor installation as well as sanding and varnashing -Fitting sash windows

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by andrew on 2/7/2012

Qamil He constructed our loft conversion, which we more than happy with. He paid attention to detail and followed the drawings by the architect precisely.He was always willing to discuss any issues and communicate his next plans for the ongoing work. As he was hardworking and punctual the work was done to programme. Would highly recommend him and all the sub-contractors that he has used. Tracey and Andy Sparks

AJW Specialists avatar

AJW Specialists

Carbon Monoxide Alarms - Installation

We are a diverse and efficient business covering all aspects of the building trade. Myself I studied at college as a bricklayer city guilds qualified. I can turn my hand to most jobs and look to offer a friendly and reliable service.

SJ READ ELECTRICAL avatar

SJ READ ELECTRICAL

Carbon Monoxide Alarms - Installation

I'm an electrical contractor that undertakes many different varieties of electrical work from domestic dwellings to industrial and commercial premises. I have over 18 years of experience within the electrical industry and am fully qualified to carry out installation works and testing. Works that can be undertaken range from new build installations to rewires and alterations to existing properties. I have had a lot of experience in carrying out condition reports and electrical installation reports. All work is carried out to a high standard and inline with the latest wiring regulations.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Paul on 18/9/2023

Steve fitted a new supply panel for us and carried out the job as he stated to me. Very pleased with the work completed & would definitely use Steve again.

Masterfix Electrical avatar

Masterfix Electrical

Carbon Monoxide Alarms - Installation

Fully Qualified and Experience Electrician in North London are ready to serve you with high Quality, Fast and Reliable All domestic & commercial Electrical Services With Reasonable price.

Watts Up Electrics LTD avatar

Watts Up Electrics LTD

Carbon Monoxide Alarms - Installation

We’re an experienced and professional electrical contracting company that is mainly working in Hemel Hempstead , but also Hertfordshire and parts of London. We pride ourselves on high levels of work and achieving what clients need. We believe that being honest and straight forward with you, we are also happy to offer opinions and advice. We believe that customer satisfaction is paramount so next time you need a electrician think of Watts Up Electrics as your 1st choice. We provide a vast amount of services from domestic & commercial installation’s, upgrading consumer units to meet new regulations, electrical safety certificates (NICEIC) and fault finding. Commercial work will include new lighting and power installations, upgrading to led lighting, emergency lighting, consumer unit upgrades, periodic inspections, maintenance contracts , CCTV using the latest equipment such as face and number plate recognition. Contact us now to have one of our trade certified electricians come to you to discuss your individual needs or send us a email and we will happily get in contact with you.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Tansy on 1/6/2023

Quick, friendly and efficient service, would recommend!

We are General Building Services ANGEL BUILDING@BUSINESS We look after our costumers for 26 years. All Work Undertaken

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Madhusinh on 3/3/2026
AM Electrical avatar

AM Electrical

Carbon Monoxide Alarms - Installation

Qualified Electrician with 20+ years' experience in electrical installation (part and complete), kitchen rewiring, fire alarm, fuse board replacement. All work meet BS7671 standard and fully insured. I can guarantee high quality work to suit all budgets.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Richard on 27/3/2026

Amar replaced my storeroom light fixture. It was a small job done with quick, friendly professionalism at the agreed price. (This was the second job Amar has done at my flat.)

Top Freeze avatar

Top Freeze

Carbon Monoxide Alarms - Installation

With over 20 years of experience, Top Freeze Ltd specialises in the repair, installation, and supply of high-quality kitchen appliances across all of London. • Fast & Friendly Service • Experts in Built-in & Freestanding Appliances • Trusted by Homeowners, Landlords & Letting Agencies • Fully Qualified for All Electrical Work on Kitchen Appliances Whether your fridge has stopped cooling, your oven isn’t heating, or you need a new appliance professionally installed—we’re here to help. Our experienced engineers deliver reliable, top-tier service you can count on.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Joanne on 6/3/2026

Mehraj replied quickly to my job post and attended the next day. He provided transparent pricing in the initial phone call and completed the job really quickly. My oven is now working! He was friendly and professional. Would recommend

Pro-Tec Electrical avatar

Pro-Tec Electrical

Carbon Monoxide Alarms - Installation

Pro-Tec Electrical specialises in all kinds of electrical work, from fault finding & maintenance to new installations & energy saving technology. We pride ourselves on our quality work and reliability and we ensure good customer service is always given.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Saloni on 3/12/2018

Good Man completed work as agreed.

we are a company offering all building works, extensions, lofts, bespoke bathrooms and kitchens to suite your taste. We use only the highest quality products and materials for your job. Only the best design, materials and price will always be provided.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Anna on 9/5/2024

John Makkar and his incredible team have made the experience of renovating our whole 5 bedroomed house an absolute pleasure ! The enthusiasm and professionalism is outstanding as well as the quality of work and his excellent communication. I can’t rate John and the team highly enough! His ideas are brilliant and creative- always a problem solver and he deeply cares. Thank you so much John and the team!

Post your job for free

app-icon

Get our app for homeowners

  • Send messages and get notifications from tradespeople
  • Add photos to get more accurate quotes
  • View tradespeople's profiles