In London, where gas heating systems and fuel-burning appliances are common in both residential and commercial buildings, carbon monoxide (CO) safety is a serious concern. With carbon monoxide being invisible, odourless, and potentially deadly, the role of professional carbon monoxide detector companies becomes critical. These companies help safeguard lives by installing, maintaining, and monitoring CO detectors.
This article explores the top 10 carbon monoxide detector companies in London and answers the key questions every property owner, landlord, or business should ask when selecting a CO detection service.
What Makes a Carbon Monoxide Detector Company Reliable in London?
Regulatory Certification Matters
A reliable carbon monoxide detector company in London must be Gas Safe registered. This certification ensures the company’s technicians are legally qualified to work on gas appliances and are trained to handle CO detection systems safely and efficiently. Without this accreditation, the company cannot issue the necessary safety certificates required by law.
Verified Reviews Build Trust
A trustworthy service provider is typically backed by consistently positive online reviews and customer feedback. Verified reviews from Google Business, Trustpilot, and Checkatrade provide insights into the company’s professionalism, response time, pricing transparency, and customer support. Customers frequently highlight punctual service and knowledgeable technicians as signs of reliability.
Services Go Beyond Installation
Top-tier CO detector companies in London offer a comprehensive suite of services. These go beyond installation and typically include annual testing, device maintenance, emergency call-outs, and the integration of smart CO detection systems. A broad range of services indicates the company’s capability to support safety in the long term.
Which Are the Top 10 Carbon Monoxide Detector Companies in London?
1. Safegas London Ltd – “Safety First, Always”
Safegas London Ltd is a long-standing name in the field of gas and carbon monoxide safety across the capital. Their fully certified Gas Safe engineers offer installation, testing, and maintenance of CO alarms for both homes and commercial properties. With more than 20 years of industry experience, Safegas is widely recognised for reliability, punctuality, and honest pricing.
The company’s services are especially tailored for landlords needing regular compliance checks and safety certifications. Safegas also installs modern CO alarms, including battery-operated and hardwired models. Their technicians provide detailed guidance to ensure proper device usage and long-term safety. Overall, they are a dependable partner in preventing carbon monoxide exposure in London properties.
Expertise
Well-regarded for fully adhering to British gas safety standards and regulations.
Ideal For
Ideal for property owners looking for combined carbon monoxide and boiler safety packages.
Pricing: Basic detector installation starts from £75.
- Website: safegaslondon.co.uk
- Phone: 01708 693500
- Address: 26 Sussex Avenue Harold wood Romford Essex RM3 0TA
- Email: Info@safegaslondon.co.uk
Review: ★★★★☆
“Prompt, polite, and thorough—Safegas gave me peace of mind with fast CO detector setup.”
2. Aspect – “Tradespeople You Can Trust”
Aspect is a top-rated London-based property maintenance company providing carbon monoxide detector installation and testing. Operating across all boroughs, their engineers are known for swift response, professionalism, and consistent service quality. They offer a wide range of CO detection options, including hardwired and smart alarms compatible with digital home systems.
Aspect’s online booking, detailed quotes, and digital service records appeal to busy homeowners and tenants. The company’s 24/7 emergency service ensures customers are never left without protection. With a transparent pricing model, they have become a go-to for reliable safety services. Aspect continues to build a loyal client base with its efficient and courteous approach.
Distinction
Specialises in urgent CO detector callouts across Greater London.
Suitable For
Busy homeowners and tenants needing fast, reliable support.
Pricing: Installations start at £90; emergency response from £130.
- Website: aspect.co.uk
- Phone: 020 3944 4254
- Address: E7, Barwell Business Park, Leatherhead Road, London, United Kingdom
- Email: enquiries@aspect.co.uk
Review: ★★★★★
Same-day service, tidy installation, and clear explanations—couldn’t ask for more professional help!
3. EcoGas London – “Efficient Energy, Maximum Safety”
EcoGas London offers carbon monoxide detector solutions with a strong focus on sustainability and energy efficiency. Their engineers are fully Gas Safe registered and trained to install smart, eco-friendly CO detectors. The company helps clients reduce both emissions and safety risks by offering modern technologies and clean installation practices.
Customers appreciate their no-pressure consultations and clear educational approach. EcoGas services include full property safety checks, alarm upgrades, and maintenance plans. They aim to make every home safer and greener through technology that aligns with environmental responsibility. Ideal for eco-conscious homeowners, EcoGas leads with both safety and sustainability.
Special Focus
Eco-conscious services and low-emission smart CO installations.
Tailored To
Environmentally aware homeowners seeking sustainable safety solutions.
Pricing: CO alarm installations from £85; smart upgrades from £140.
- Website: ecogas.london
- Phone: 020 3771 8690
- Address: 1 Coldbath Square, London EC1R 5HL
- Email: hello@ecogas.london
Review: ★★★★☆
“Appreciated their green approach and advice on energy-efficient alarms. Very respectful and informative.”
4. BBS Plumbing and Heating – “Your Local Heating Experts”
BBS Plumbing and Heating is a family-run business offering reliable carbon monoxide detector installations throughout North and Central London. Known for its honest pricing and fast response times, BBS has built strong relationships with homeowners and landlords alike. Their services range from basic alarm installations to landlord safety certification and annual maintenance.
Customers appreciate their straightforward communication and willingness to work around busy schedules. Their engineers are friendly, knowledgeable, and respectful of client properties. They also offer helpful aftercare, ensuring clients understand how to maintain and test their alarms. BBS stands out for making gas safety both simple and accessible.
Strength
Locally trusted engineers offering prompt and courteous service.
Recommended For
Clients seeking affordable, no-fuss carbon monoxide detection.
Pricing: Standard CO detector install from £70.
- Website: www.bbsplumbandheat.co.uk
- Phone: 020 8888 3686
- Address: 37 Livingstone Road,London N13 4SD
- Email: bernard@bbsplumbandheat.com
Review: ★★★★☆
“Quick, efficient, and didn’t oversell. Just got the job done properly.”
5. Serviceteam Ltd. – “Fast, Reliable, Professional”
Serviceteam Ltd. is a one-stop property maintenance provider offering carbon monoxide detector services with precision and efficiency. Their Gas Safe engineers are trained to install, replace, and inspect alarms for both residential and commercial properties. What sets them apart is their digital-first approach clients receive service reports, certificates, and reminders electronically.
Serviceteam’s engineers are available seven days a week, with emergency CO alarm support also provided. Their services are ideal for landlords managing multiple units across London. The company’s professionalism, punctuality, and systemised service delivery make them a popular choice. They excel in providing hassle-free compliance and property safety solutions.
Area of Excellence
Technologically advanced with digital documentation and reminders.
Best Suited To
Property managers and landlords managing multiple units.
Pricing: Installation from £80; digital certificates included in packages.
- Website: serviceteam.co.uk
- Phone: 020 8059 8118
- Address: 60 Windsor Ave, London SW19 2RR, United Kingdom, Hounslow, United Kingdom
- Email: facebook@serviceteam.co.uk
Review: ★★★★★
“Excellent scheduling, emailed the certificate within the hour. Great for landlords!”
6. Homecure Plumbers – “We’re Always Nearby”
Homecure Plumbers provides professional carbon monoxide alarm services with a focus on speed and convenience. With engineers on call 24/7, they cover Greater London and offer both emergency callouts and pre-booked appointments. Their combined plumbing and gas knowledge allows for comprehensive safety checks in one visit.
Homecure provides complete CO alarm installations, ensuring devices are correctly installed, tested, and explained in detail. Clients commend the company for its friendly staff, quick turnaround times, and value for money. Their approach is ideal for busy households or landlords needing fast compliance. Homecure continues to be a reliable choice for practical and effective CO safety solutions.
Unique Feature
Dual gas and plumbing safety assessments in one visit.
Ideal Scenario
Homes undergoing full gas and water system checks.
Pricing: Installations start at £75.
- Website: homecureplumbers.co.uk
- Phone: 0208 106 0854
- Address: 1st Floor, 5 Century Court, Tolpits Lane, Northwood, Watford. WD18 9PX
- Email: info@homecureplumbers.co.uk
Review: ★★★★☆
“They managed the boiler check and CO alarm install in one quick visit—top-notch efficiency!”
7. WPJ Heating – “Heating Engineers with a Heart”
WPJ Heating delivers high-quality carbon monoxide detection and heating services with a customer-first philosophy. Their engineers are well-regarded for their technical skill and willingness to provide thoughtful advice. WPJ offers a wide selection of detectors, including premium smart systems compatible with modern home automation.
Their clean, careful installations are often praised by clients looking for premium solutions. The company operates primarily in Central and West London and maintains a reputation for reliability and respectfulness. With annual service plans and responsive support, WPJ is ideal for long-term safety maintenance. They place great value on building trust and offering peace of mind.
Specialty
Highly personalised service and long-term care packages.
Most Suitable For
Homeowners wanting premium, future-proof installations.
Pricing: Smart CO alarm installs start at £120.
- Website: wpjheating.co.uk
- Phone: 020 4572 7113
- Address: 20 Shaftesbury Ave, London W1D 7EU
- Email: info@wpjheating.co.uk
Review: ★★★★★
“Genuinely helpful and not rushed. They explained how the smart alarm worked and even set up the app.”
8. PHS Engineers Ltd – “Precision Heating Solutions You Can Rely On”
PHS Engineers Ltd is a trusted provider of heating, plumbing, and carbon monoxide safety solutions across London. With decades of experience and a highly qualified team, the company specialises in Gas Safe installations and maintenance. Their carbon monoxide detector service is built around reliability, compliance, and technical expertise.
PHS supports both residential and commercial clients, offering installation of high-spec alarms as well as annual checks. Their engineers are praised for punctuality, clean workmanship, and thorough safety assessments.
The company also provides landlord compliance packages, including gas safety certificates and multi-unit coverage. PHS continues to be a go-to choice for those seeking precision, reliability, and honest pricing.
Core Capability
Delivers accurate and compliant installations with long-term service support.
Perfect For
Landlords, homeowners, and facility managers seeking comprehensive safety cover.
Pricing: Custom quotes available upon request.
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Website: phsengineersltd.co.uk
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Phone: 01206 580 481
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Address: 132 Communications House, 9 St. Johns Street – Colchester | CO2 7NN
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Email: office@phsengineersltd.co.uk
Review: ★★★★☆
“Professional and dependable service with great attention to safety. Highly recommended for landlords.”
9. London Gas – “Experts You Can Count On”
London Gas has over 20 years of experience providing carbon monoxide safety and gas services across Greater London. Their CO detection packages are ideal for landlords and managing agents seeking reliable, fully compliant solutions. Services include risk assessments, installation, and annual reminders for maintenance.
The company’s experienced team handles every job professionally, whether it’s a one-bedroom flat or a multi-unit property. Clients frequently highlight the company’s consistency, transparency, and helpful advice. London Gas is especially known for its all-in-one packages that combine boiler servicing with alarm fitting. They’re a strong choice for those managing multiple properties.
Known For
Bundle deals combining boiler service and CO detector setup.
Popular With
Landlords looking for cost-effective annual safety plans.
Pricing: Packages start from £95.
- Website: www.london-gas.co.uk
- Phone: 0208 3642300
- Address: West Hill House, 6 Swains Lane, London, N6 6QS
- Email: londongas@hotmail.co.uk
Review: ★★★★☆
“They handled all my rental properties in one visit. Good value and professional.”
10. Plumbforce Direct – “Fast, Local, Reliable”
Plumbforce Direct specialises in rapid-response plumbing and gas safety services, including carbon monoxide detector installations. The company prides itself on offering same-day appointments and 24/7 availability across all London boroughs. Engineers are Gas Safe certified and trained to fit various CO detectors from basic to smart.
Clients appreciate the speed and professionalism, especially during emergency situations. Plumbforce Direct focuses on clear communication and upfront pricing, avoiding hidden charges. Their services are best suited to urgent needs, such as post-move safety checks or faulty alarm replacements. For those needing immediate protection, Plumbforce is a reliable first call.
Focus
Rapid-response alarm installation with same-day service.
Geared Towards
Tenants and homeowners needing urgent installations.
Pricing: Emergency CO installs from £95.
- Website: plumbforcedirect.co.uk
- Phone: 020 3432 3605
- Address: 4 Old Park Lane, London W1K 1QW
Review: ★★★★☆
“Called in the morning, alarm was installed by lunch. Super responsive and kind.”
What Services Do Carbon Monoxide Detector Companies in London Provide?
Installation Tailored to Property Type
Most carbon monoxide detector companies offer installation services tailored to the type and size of the property. For instance, battery-powered devices might be suitable for small flats, while larger homes or commercial buildings may require hardwired or smart detectors integrated into an existing alarm system. The companies conduct an on-site assessment before recommending the most suitable setup.
Comprehensive Inspection and Testing
Professional CO detector companies provide detailed inspections to assess potential CO risks from gas boilers, cookers, or fireplaces. These inspections include air quality assessments and detector functionality tests. A standard recommendation is to perform these tests at least once a year to ensure ongoing protection.
Round-the-Clock Emergency Services
In the event of a suspected carbon monoxide leak, many of these companies offer 24/7 emergency response. Specialists are promptly sent out to investigate and address the problem without delay. These services are particularly valuable for landlords and businesses where tenant safety and operational continuity are essential.
How Do Companies Ensure Carbon Monoxide Safety Compliance in London?
Gas Safe Compliance Ensures Legal Operation
Every reputable CO detector company in London employs Gas Safe registered engineers. This guarantees not only technical expertise but also legal compliance. These professionals follow strict safety protocols and are trained to handle carbon monoxide risks in both residential and commercial settings.
Landlord Certificate Issuance
London landlords are legally obligated to follow the updated 2022 regulations for smoke and carbon monoxide alarm installation. Trusted companies offer landlord safety packages that include the installation of CO alarms and issuing of Gas Safety Certificates documents required to prove regulatory compliance.
| Requirement | Details |
| Certificate Name | Landlord Gas Safety Certificate |
| Mandatory For | All rented properties with fuel appliances |
| Re-Inspection Frequency | Every 12 months |
| Issued By | Gas Safe registered engineer |
What Types of Carbon Monoxide Detectors Are Available?
Battery-Operated Detectors
These are typically the most accessible and affordable detectors. They are portable and easy to install, making them ideal for tenants or homeowners who require flexibility. However, they require regular battery changes and are best suited for smaller properties.
Hardwired Carbon Monoxide Detectors
Hardwired CO alarms are directly connected to the property’s electrical wiring for constant power. Often paired with smoke detectors, they provide consistent protection without battery concerns. Only certified professionals should carry out installations to ensure compliance and safety.
Smart Carbon Monoxide Detectors
Smart detectors connect to home Wi-Fi networks and mobile devices, allowing remote monitoring. They provide real-time alerts, status updates, and integration with home automation systems like Google Nest or Amazon Alexa.
| Detector Type | Features | Average Price |
| Battery-Operated | Portable, budget-friendly | £20 – £40 |
| Hardwired | Long-term solution, stable | £40 – £80 |
| Smart Detectors | App control, remote alerts | £80 – £150+ |
How Much Do Carbon Monoxide Detection Services Cost in London?
Installation Costs Vary by System Type
Basic installation for battery-powered detectors may cost between £50 to £100, depending on the location and complexity. Hardwired systems cost more due to additional wiring work.
Emergency and Inspection Service Pricing
Emergency call-outs typically range between £100 and £150, while annual maintenance checks fall within £60 to £90. Packages for landlords that include a Gas Safety Certificate can cost between £80 and £120.
| Service Type | Estimated Cost |
| Basic Installation | £50 – £100 |
| Smart Detector Setup | £120 – £180 |
| Annual Maintenance | £60 – £90 |
| Emergency Call-Out | £100 – £150 |
| Landlord Safety Certificate | £80 – £120 |
Why is Regular Co Detector Maintenance Important?
Preventing Malfunctions
CO detectors, like any electronic device, can fail over time. Dust accumulation, expired sensors, or low batteries can reduce accuracy or render the alarm non-functional. Regular servicing ensures devices are working correctly.
Increasing Safety Confidence
Annual servicing enhances peace of mind, especially for landlords and families. Knowing that your CO detectors are tested and verified by professionals eliminates the guesswork and reduces the risk of carbon monoxide exposure.
What Should London Landlords Know About Carbon Monoxide Detector Regulations?
Responsibilities Under UK Law
Landlords must install a working carbon monoxide alarm in every room with a solid fuel appliance. From 2022, the rule expanded to cover rooms with gas appliances as well. It is the landlord’s responsibility to test alarms on the first day of any new tenancy and replace them if faulty.
Non-Compliance Penalties
Non-compliance may result in heavy penalties and legal action for property owners. Local authorities can impose fines up to £5,000, and tenants may be entitled to report unsafe living conditions, risking further complications for property owners.
How Can London Residents Choose the Right Co Detector Company?
Credentials Should Be Verified
Before hiring a company, customers should confirm Gas Safe registration, years in business, and insurance coverage. These credentials ensure accountability and expertise.
Clear Communication and Guarantees Matter
Reputable companies offer written quotes, detailed service breakdowns, and device warranties. Transparency upfront reduces misunderstandings and builds long-term trust.
Conclusion
Carbon monoxide is an invisible hazard, making it essential to take prevention seriously. By choosing a reputable and certified carbon monoxide detector company in London, property owners and landlords can ensure their premises are safe and compliant with all necessary regulations.
The companies listed above have a proven track record in protecting homes and businesses from CO-related dangers through expert installation, responsive support, and ongoing maintenance.
FAQs About Carbon Monoxide Detector Companies in London
What is the lifespan of a carbon monoxide detector?
Depending on the make and usage, carbon monoxide detectors generally remain effective for 5 to 10 years. check the manufacturer’s label.
Can I install a CO detector myself in a rented property?
While battery-operated units can be self-installed, it is the landlord’s legal duty to provide a working CO alarm.
How often should carbon monoxide detectors be serviced?
Annual servicing is recommended to ensure accuracy and compliance with UK safety standards.
Do smart CO detectors need Wi-Fi to work?
They function as standalone alarms but require Wi-Fi for mobile alerts and app features.
Is carbon monoxide more dangerous than gas leaks?
Yes, because CO has no smell or colour, making it harder to detect without an alarm.
Can CO detectors be used in kitchens?
They can, but placement should follow manufacturer guidance to avoid false alarms due to cooking fumes.
Are there dual-function detectors for smoke and CO?
Yes, many models now combine both smoke and CO detection for integrated safety.