Business Details
Expert Heating Contractors Glasgow & Lanarkshire
Assured Heating has been delivering expert heating solutions across Glasgow and Lanarkshire for over 25 years. Founded by Clark Pheely, who began his career working alongside his father, we specialise in oil, electric, and gas heating systems with a focus on installation, repair, and maintenance. Our team holds OFTEC and Corgi accreditations, and we are proud to be a Worcester Bosch accredited service provider, ensuring technical excellence and compliance with industry standards. We operate without sales personnel, relying solely on qualified tradespeople to advise and execute projects, guaranteeing transparency and expertise from quotation to completion.Our commitment to quality is reinforced by 12-year warranties on gas boilers and 7-year warranties on oil boilers, reflecting our confidence in the durability and performance of our work. With a reputation built on reliability, competitive pricing, and timely service, we serve both residential and commercial clients, offering tailored heating solutions that meet individual lifestyle and budgetary requirements.
Services
Electric Heating
Storage Heaters
Electric Boilers
Oil Boilers
Gas Boilers
Oil Tank Replacement
Oil Tank Removal
Highlights and features
- We have over 25 years of experience in heating system installations.
- Our team holds OFTEC and Corgi accreditations for technical excellence.
- We offer 12-year warranties on gas boiler installations.
- One-point contact from quotation to project completion.
- No sales teams only qualified tradespeople advise clients.
Associations and certifications
- OFTEC
- Corgi
- Worcester Bosch
- Which? Trusted Trader
What people say
Excellent service
Friendly team
Good prices
Efficient work
Highly recommend
Services
Electric Boilers
We install and repair electric boilers from leading brands, including Thermaflow and Amptec. Our systems operate on Economy 2000 tariffs, providing mains pressure hot water and sealed-system heating. With expertise in both combination and non-combination boilers, we ensure energy-efficient solutions tailored to property requirements. Our installations include thermal store cylinders and direct-flow systems, optimised for off-peak electricity usage.
Oil Boilers
Our OFTEC-certified team offers full-service oil boiler solutions, including installations, servicing, and repairs. We work with Worcester Bosch systems and provide HVO-compatible upgrades following 2035 regulations. Services include fault diagnostics, annual maintenance, and emergency repairs, ensuring compliance with safety standards. We supply high-efficiency boilers with 7-year warranties for domestic and commercial properties.
Gas Boilers
We install and service Worcester Bosch gas boilers under official accreditation. Our Corgi-registered engineers handle domestic and commercial central heating systems, offering repairs, annual servicing, and replacement installations. All work meets Gas Safe regulations, with 12-year warranties on new boiler installations. We specialise in system compatibility assessments and energy-efficient upgrades.
Storage Heaters
We supply and install Dimplex Quantum storage heaters, designed for 27% lower running costs compared to standard systems. These high-heat retention units operate on off-peak tariffs, with programmable controls and fan-assisted output. Our installations meet SAP2012 Category 7 standards, ensuring compliance for new builds and retrofits. We provide maintenance and replacement services for existing storage heater systems.
Oil Tank Replacement
We offer oil tank assessments, replacements, and removals for domestic and commercial properties. Our services include site surveys, compliance checks, and installation of bunded tanks meeting environmental regulations. We provide free quotes for tank upgrades and emergency replacements, ensuring safe, leak-proof storage solutions. Disposal of old tanks follows Environment Agency guidelines.
People
Clark Pheely
Owner & Lead Engineer
Clark Pheely has over 25 years of experience in heating systems, starting his career with his father before founding Assured Heating. He oversees all projects personally, working with an apprentice to deliver installations and repairs. His expertise spans oil, electric, and gas systems, supported by OFTEC and Corgi accreditations.
Questions
Do you provide services outside Glasgow?
Yes, we cover all areas of Lanarkshire, including Motherwell, Airdrie, and Cumbernauld, in addition to Glasgow.
What warranties do you offer?
We provide 12-year warranties on gas boiler installations and 7-year warranties on oil boiler installations, subject to annual servicing.
Are your engineers certified?
Yes, our team holds OFTEC and Corgi accreditations, and we are Worcester Bosch official service partners.
Can you install HVO-compatible oil boilers?
Yes, we offer HVO replacement fuel systems compliant with 2035 regulations, ensuring future-proof heating solutions.
How quickly can you install a new boiler?
Most boiler installations are completed within one to two days, with same-day emergency repairs available for urgent issues.
