The cost of a new heating system in Scotland

The cost of replacing a heating system in Scotland depends on the type of system you choose, the size and type of your property, and the complexity of the installation. Because every home is different, we arrange a no-obligation survey at your property before providing a written quote. This page explains the factors that influence cost so you know what to expect — and how finance can help you spread it. Loans available, subject to status.

What affects the cost of a new boiler

A replacement boiler is usually the most affordable heating upgrade, because the existing radiators, pipework and gas supply are already in place. The main factors that affect the cost of a boiler installation are the boiler type (combi, system, or regular), the manufacturer and warranty level, the output needed to heat your home and provide hot water, and whether the flue position or location of the new boiler differs from the old one. A like-for-like combi swap in a typical three-bedroom Scottish home is usually straightforward. Costs rise if the boiler is being relocated, if the gas pipe needs upgrading, or if a magnetic filter, system flush or new controls are added at the same time.

In older Scottish properties — stone-built tenements, Victorian terraces, rural cottages — the existing system may have open-flued pipework, a cold-water tank in the loft, or a hot water cylinder that needs replacing. Converting from a regular system to a combi, or vice versa, adds labour and materials. The survey covers all of this, and the written quote itemises what is included so there are no surprises.

What affects the cost of an air source heat pump

An air source heat pump (ASHP) is an electric heating system that extracts heat from the outside air and distributes it through radiators or underfloor heating. ASHPs are a low-carbon alternative to gas and oil boilers and are increasingly popular in Scottish homes, including off-gas-grid properties that previously relied on oil or LPG. The cost of an ASHP installation is higher than a like-for-like boiler replacement because it involves a new external unit, a hot water cylinder (if you don't already have a suitable one), and often upgrades to radiators or pipework to accommodate the lower flow temperatures at which heat pumps operate efficiently.

Factors that affect the cost include the heat loss of your property (calculated during the survey), the size and output of the heat pump, whether your existing radiators are large enough or need upgrading, whether you have space for a hot water cylinder, and the location of the external unit relative to the internal components. A well-insulated home needs a smaller heat pump; a poorly insulated home needs a larger one. This is why the survey is essential — an MCS-certified installer calculates the heat loss room by room and specifies a heat pump sized to your property, not a guess.

What affects the cost of a hybrid heating system

A hybrid system pairs an air source heat pump with a conventional boiler (usually gas). The heat pump handles heating for most of the year, and the boiler kicks in during the coldest weather or for rapid hot water recovery. Hybrid systems suit homes that want to reduce carbon emissions and running costs without committing fully to a heat pump, or properties where a heat pump alone might struggle on the coldest Scottish winter days. The cost is higher than a boiler-only replacement because two heating appliances are installed, plus the controls that switch between them automatically.

As with a standalone heat pump, the survey establishes the heat loss of the property, the condition and size of existing radiators, and the hot water arrangement. The written quote sets out the equipment, labour and finance terms.

Why we provide quotes, not price lists

We don't publish fixed prices because every installation is different. A combi swap in a modern Barratt estate in Livingston is a very different job from a boiler replacement in a stone cottage near Aviemore, and an air source heat pump in a 1990s detached house in Cupar will need a different specification from one in a Glasgow tenement flat. Publishing a single price would be misleading. Instead, we arrange a no-obligation survey at your home, calculate exactly what the installation involves, and give you a written quote that reflects your property and your requirements.

The quote is itemised and provided with no obligation. If you're interested in spreading the cost, the finance options available to you are included. Loans available, subject to status — terms are confirmed in writing before you commit. There is no charge for the survey or the quote.

Spreading the cost with finance

For many Scottish homeowners, paying the full cost of a new boiler or heat pump upfront isn't practical. Finance allows you to spread the cost over monthly instalments, so you can have reliable heating and hot water installed without finding the full amount in one go. Whether you're replacing a broken boiler in January or planning a heat pump installation for the spring, finance puts the work within reach. Loans available, subject to status — and because we arrange quotes for paid installations only, you'll always see the full cost and the finance terms in writing before you decide.