Combi boiler installation
Made for homes that want hot water on demand, no cylinder, and a simpler upgrade. Compare package levels, see what is included, and move from quote to installation with direct local support across Glasgow, Lanarkshire, and Central Scotland.
Flats, terraces, semis, and homes with one or two bathrooms that want a simple setup and reliable daily hot water.
Popular Worcester combi packages
Installed prices shown use our local quote data and are presented as fixed package prices for standard natural gas replacements. This page leads with Worcester packages. If you want the lightest-price combi swap instead, the full quote builder can also show lower-cost options where they fit.
Best value
Worcester Bosch
Most popular
Worcester Bosch
Premium upgrade
Worcester Bosch
What is included
How it works
A combi boiler works a bit like the human body — each part has a job to keep your home warm and your hot water flowing.
The pump works like the heart of the system, pushing hot water around your radiators and heating circuit so warmth can move through the home.
The burner is the part that creates heat, similar to how the body turns food into energy.
The fan helps move air in and pushes combustion gases safely out through the flue — similar to how lungs handle airflow in and out.
The heat exchanger transfers heat into the water quickly and efficiently. This is one of the key parts that allows a combi boiler to produce heating and hot water on demand.
The PCB acts like the brain, telling the boiler when to fire up. It sends signals to the parts, receives information back, and knows when something is not working right.
The pipes carry hot water around the home and bring cooler water back to the boiler, just like blood vessels carry blood around the body.
When you turn on a hot tap, the boiler heats water directly from the mains, so you get hot water on demand. When your heating is on, the boiler circulates heated water through your radiators to warm your home.
Get a fixed price quote from FlameTec and find the right boiler for your home.
Real install workmanship
Recent reviews
“The new boiler installation was excellent. He arrived on time, worked professionally, explained everything clearly, and left the workspace clean and tidy.”
“Absolutely first class installation and a first class fitter. Took the time to explain everything and gave excellent value for money.”
Finance, warranty, next steps
Finance is available on selected installs through TradeHelp. Where it applies, we show the option clearly in checkout before you commit. Subject to status.
We match the boiler and package to the right warranty option, then register it correctly so the paperwork is done cleanly.
Build your quote, upload the right photos, confirm the package, and move straight toward your installation date.
Combi boiler FAQs
Short answers first. If the home needs a different setup, we will tell you before the job is confirmed.
A combi boiler heats the central heating and produces hot water on demand from the mains, so it does not need a separate hot water cylinder for most homes.
A straightforward combi swap is often completed in a day. Conversions, relocations, or extra system work can take longer.
Sometimes, but not always. Once hot water demand gets heavier or several bathrooms are in regular use, a system boiler can be the better fit.
That depends on the package and the confirmed scope, but the normal package covers boiler supply, standard flue, fitting essentials, commissioning, and the right paperwork.
Yes, on selected packages and subject to status. If your package is eligible, the finance option is shown clearly during checkout.
We look at property size, number of bathrooms, hot water demand, space constraints, and the finish or warranty level you want before confirming the setup.
Yes. Worcester Bosch is one of the main package lines we install, including the Greenstar 2000, 4000, and 8000 ranges.
Ready to move?
See the installed price, compare the warranty option, and move toward booking with a clearer, more direct experience than a typical trades page.
Fixed online pricing | Gas Safe engineers | Finance available on selected packages, subject to status