Glasgow Boiler & Heating FAQs
Clear, direct answers from certified Gas Safe engineers about pricing, tenement regulations, guarantees, and installations.
In 2026, a straightforward combi-for-combi replacement in Glasgow starts from £1,299 to £1,650 depending on model. System-to-combi conversions from old water tanks start from £1,895. All quotes from The Online Boiler Company are 100% fixed with zero hidden extras.
None. Our fixed-price promise covers everything: the boiler, horizontal/vertical flue, MagnaClean magnetic filter, chemical flush, wireless digital thermostat, old boiler removal, and Gas Safe registration.
No. We operate a strict zero-deposit policy. You only pay once the boiler is fully fitted, tested, and running in your home.
Yes. Over 70% of our installations take place in Victorian tenements across Partick, Shawlands, Dennistoun, and the West End. We use specialized diamond coring rigs to neatly core through 600mm solid blonde and red sandstone walls without damage to exterior masonry.
In unlisted tenements, replacing a boiler internally does not require planning permission. For Category B listed properties (e.g. in parts of Kelvinside or Park Circus), we route flues through existing internal chimney voids or rear walls complying with conservation guidelines.
We provide official manufacturer warranties ranging from 8 to 12 years. Worcester Bosch 8000 carries 12 years; Worcester Bosch 4000 carries 10 years; Navien carries 10 to 12 years; Ideal Logic+ carries 8 to 10 years.
Our engineer logs the installation with Gas Safe and Glasgow Building Standards on the same day. You receive your digital confirmation immediately, and the official Gas Safe Building Regulations certificate arrives via post within 10 to 15 days.
Have a Specific Question About Your Home?
Our Glasgow heating engineers are available to advise you on sizing, pipework, and quotes.