As well as the average cost of installing a combi boiler which can cost between £1,648 and £3,000, you should also consider the additional parts. According to Energy Saving Trust, adding other parts could cost up to £4,000.
Thing’s to consider when choosing your new combi boiler:
- Fuel type
- Add ons
- Boiler size
- Brand and model
As already mentioned, combi boilers can be compatible with gas, LPG, oil or electric. Homeowners will choose their preferred fuel source depending on the infrastructure in their neighbourhood. If you live near the national gas grid, it would be cheaper to use gas-compatible combi boilers.
Oil combi boilers could be a bit more costly because you need an additional tank to hold the oil. Additionally, oil prices fluctuate regularly, which can affect your spending. On the other hand, electric combi boilers use electricity; therefore, they are more energy efficient. However, they can increase your monthly electricity bill and may not be powerful enough for larger homes.
Added features & replacements
You could incur more costs if you need to add features or replace an old boiler. These costs could include adding electrical wires, installing new pipes, modifying the power source or purchasing additional tanks. This happens mostly when you need to switch from one fuel source to another.
For instance, if you are moving from oil to gas, you need to install new pipes and dig out old oil tanks. In addition, replacing a regular or system boiler with a combi boiler may be more costly depending on whether the pipework in your home needs to be changed.
If you live in a large home with several bathrooms, you might need a more powerful boiler. The larger the boiler, the higher the cost. In addition, larger heaters need more infrastructure to install and additional labour, which can increase the upfront costs. To get the correct boiler size for your home, you can consult a certified boiler installer for recommendations.
Brand and model
There are different brands in the UK dealing in combi boilers, including Vaillant, Ideal Heating, Worcester Bosch and Viessmann. Every boiler brand has a different price point. While some models are cheaper, others might be out of your budget. When choosing a brand, ensure that it’s reliable, affordable and ideal for your home.
Here’s the price comparison of different combi boilers.