Award Winner Checkatrade 2025
Regional Sustainability Winner for North of England, Scotland & Northern Ireland.
100+ Positive Google & Checkatrade Reviews- Registered Installer for all Major Brands
- Public Liability Insurance up to £5M
Domestic & Commercial Services:
- Boiler Installation
- Boiler Service & Repair
- Central Heating Systems
- Unvented Cylinders
- Landlord Gas Safety Certificates
- Domestic & Commercial Gas Work
- Air Conditioning
- Emergency Call Out
Find your new boiler today
- Free Quote & Competitive Pricing
- Up to 12 Year Parts & Labour Warranty
- Significant Energy Savings £££
- Gas Safe Registered Engineers
Domestic & Commercial Servcies
Boiler installation
Supply and installation of high-efficiency boilers tailored to your home.
Installed to the highest standard with full system protection, manufacturer registration, and up to 12-year warranties for complete peace of mind.
Need a new boiler — get an instant boiler quote today!
Boiler servicing & repair
Professional boiler servicing and fault diagnosis to keep your system running safely and efficiently.
Fast, reliable repairs on all major brands with clear
reporting and same day certification.
Central heating
Complete central heating solutions including Full System Installations, Radiator Upgrades, Power Flushing and Smart Controls.
Designed to improve efficiency, reduce energy bills and deliver reliable, even heat throughout your
home.
Unvented hot water cylinders
Installation, servicing and repair of unvented hot water cylinders for reliable mains-pressure hot water.
Fully qualified and installed in line with Building
Regulations, giving you safe performance, strong water pressure and peace of mind.
Landlord Gas Safety Certificate
Gas safety checks carried out every 12 months inline with legal requirements for rental properties.
Fast turnaround with digital CP12 certificates issued promptly, plus clear guidance on any required remedial work.
Domestic & Commercial Gas Work
Professional gas services for homes, landlords and commercial premises, including installation, servicing, fault finding, repairs and safety testing.
Work is carried out with a clear focus on safety, reliability and compliance, helping keep your gas
appliances and systems operating safely and efficiently.
Air conditioning
Professional installation, servicing and repair of air conditioning systems for domestic and commercial properties.
Energy efficient heating and cooling solutions designed to keep your property comfortable all year round.
Considering Aircon — get an instant air-conditioning quote today!
Emergency Call Out
Fast and reliable emergency call-out service for domestic and commercial properties.
Available to respond quickly to urgent heating, gas, plumbing and air conditioning issues, helping restore safety, comfort and minimise disruption.
Find Your Perfect Air Conditioning System Today!
- Energy Efficient Cooling A++ & Heating A+
- Filters dust, pollen and airborne allergens
- Supports cleaner, fresher air for a more comfortable space
- Smart controls and Wi-Fi options available
- Up to 6 Year Warranty
Company Profile
Hi, my name is Gianne Merriman, I undertook a 4 year apprenticeship in Leeds, with a local heating company. I then worked for a national heating company for a further 3 years, gaining invaluable hands-on experience around the UK tackling a diverse array of complex heating projects – armed with this experience and skill I founded GM Heating, which undertakes local, reliable, quality work throughout the whole of Yorkshire. My company prides itself with exceptional customer service, value for money work, demonstrated by the number of positive Checkatrade/Google reviews.
Whatever your heating requirements our company is able to offer local, reliable expertise to deliver personalised solutions just for you. At GM Heating we deliver guaranteed value for money quality work, with a very personal touch.
Google & Checkatrade Reviews
Established Leading Brands
Registered, qualified, accredited
Verifiable credentials across gas, refrigerant and commercial work.
Gas Safe Register — 658164
Registered for both domestic and commercial gas work. Commercial registration is a specialist qualification most local engineers don't hold.
F-Gas and REFCOM Certified
Legally qualified to install and service air conditioning and refrigerant-based systems.
G3 LCL Unvented Hot Water Cylinder
Qualified for unvented (pressurised) cylinder installation and servicing — required by Building Regulations.
Safe Contractor Approved
Health and safety accreditation accepted by commercial clients, landlords and public-sector contracts.
Worcester Bosch Registered Installer
Approved by the UK's most-installed boiler brand. Eligible for manufacturer warranties up to 12 years on qualifying installs.
Reasons to use GM Heating
Award Winning Local, Reliable, Value for Money Services.
Supply, Install, Service & Repair of all major brands.
Full Accreditation, Full Certification and Safe working practices.
Public Liability Insurance up to £5m
Quality Installation Work
Frequently Asked Questions
Boiler Installation
Most boiler installations are completed within 1 to 2 days, depending on the system type and any additional work required.
The right boiler depends on your property size, hot water demand and existing system. Advice can be provided to ensure the most suitable option is installed.
Modern boilers are highly efficient and can help reduce energy usage and lower heating costs compared to older systems.
Yes, new boilers come with manufacturer warranties, typically ranging from 2, 5, 7, 10 & 12 years depending on the brand and model.
Boiler Servicing
Boilers should be serviced every 12 months to ensure they are operating safely, efficiently and in line with manufacturer requirements.
A boiler service includes safety checks, cleaning of key components, checking gas pressure, inspecting the flue and ensuring the system is working correctly.
Yes, annual servicing is required to maintain the manufacturer’s warranty and keep the boiler running efficiently.
Lack of servicing can lead to reduced efficiency, higher energy bills, increased risk of breakdowns and potential safety issues.
Boiler Repair
This is a common issue and can be caused by leaks in the system, a faulty valve or a problem with the expansion vessel. A repair visit can identify the cause and resolve it.
Check your boiler pressure, thermostat settings and power supply first. If the issue continues, a repair visit will be needed to diagnose the fault.
We aim to respond as quickly as possible, especially for urgent heating and hot water issues.
If the boiler is old or the repair is not cost-effective, replacement options will be advised.
Central Heating
Radiators that are cold at the bottom are often caused by sludge and debris building up within the heating system. Cleaning or flushing the system can help restore performance and efficiency.
Yes, modern smart controls and programmable thermostats can help improve efficiency, reduce energy consumption and lower heating bills.
Slow heating can be caused by poor circulation, incorrect system settings, ageing components or an unbalanced heating system. Identifying the cause can help improve performance and efficiency.
Signs can include uneven heating, frequent breakdowns, rising energy bills or an ageing system. Upgrading components can improve efficiency, reliability and comfort.
Unvented Cylinder
An unvented cylinder stores hot water at mains pressure, providing stronger flow at taps and showers compared to traditional systems.
Unvented cylinders are not legally required to be serviced every year, but annual servicing is strongly recommended to check the safety devices and keep the system operating safely and efficiently.
Water discharging from the tundish indicates a safety issue within the system and should not be ignored. Immediate attention is required to diagnose and resolve the fault safely.
An unvented cylinder is a good option if your home has multiple bathrooms, high hot water demand or you want stronger pressure at taps and showers. It provides mains-pressure hot water without needing a cold water storage tank.
Landlords CP12
Yes, landlords are legally required to have a gas safety check carried out every 12 months on all gas appliances in rental properties.
A full check of all gas appliances, pipework and flues to ensure they are operating safely and in line with current regulations.
Most inspections take between 30–60 minutes, depending on the number of appliances in the property.
Yes, a digital CP12 certificate is issued promptly after the inspection for your records and compliance.
Gas Work
If you smell gas, immediately call the National Gas Emergency Service on 0800 111 999, open doors and windows, and avoid using electrical switches or naked flames. Once the situation has been made safe, contact us for any necessary repairs or remedial work.
We carry out a wide range of domestic and commercial gas work, including installations, servicing, repairs, safety inspections and gas pipework alterations.
If you accidentally damage a gas pipe, turn off the gas supply if it is safe to do so and contact a qualified gas engineer immediately. The pipework will need to be inspected and repaired or replaced as necessary before being put back into service.
Signs of an unsafe gas appliance can include unusual smells, yellow or lazy flames, soot deposits, excessive condensation or appliances that are not operating correctly. If you have any concerns, the appliance should be inspected as soon as possible.
Air Conditioning
Yes, modern air conditioning systems provide both heating and cooling, making them an energy-efficient solution for year round comfort.
Yes, air conditioning systems help filter dust, pollen and airborne allergens, improving indoor air quality and creating a cleaner, more comfortable environment.
Modern air conditioning systems are highly energy efficient and can often be more cost effective to run than traditional heating methods when used correctly.
Qualifying domestic air conditioning installations currently benefit from a 0% VAT rate until 31 March 2027, making them more affordable for homeowners. Please contact us for advice on eligibility and a free quotation.
Emergency Calls
Check your boiler pressure, thermostat settings and power supply first. If the issue remains, contact us to arrange an emergency call-out and diagnosis.
We attend a range of urgent heating, gas, plumbing and air conditioning issues, including boiler breakdowns, leaks, loss of heating or hot water and system faults.
We aim to respond as quickly as possible and will provide an estimated arrival time when you contact us.
Yes, we provide emergency call out services for both domestic and commercial customers across Leeds and the surrounding areas.
Areas Served from GM Heating
Leeds and the surrounding towns
- Leeds
- Wakefield
- Otley
- Wetherby
- Ilkley
- Menston
- Burley-in-Wharfedale
- Pool-in-Wharfedale
- Tadcaster
North Yorkshire
- Harrogate
- Knaresborough
- Ripon
- Boroughbridge
York and east
- York
- Selby
I take domestic and commercial work right across this area. Boiler installs and bigger projects sometimes pull me further out — I've done jobs as far as Derbyshire when the work's right.