An oil boiler uses heating oil stored in an external tank to heat water for your central heating and hot water system. When the thermostat calls for heat, the boiler burns oil to warm the water, which is then circulated through radiators or underfloor heating and to your taps.

Not always. If your existing tank is in good condition and meets current safety regulations, it can often be reused. We’ll inspect it during our initial survey and advise you honestly if replacement is necessary.

The correct size depends on your home’s size, insulation, number of radiators, and hot water demand. During the quotation process, we’ll calculate the ideal output to ensure efficiency and comfort without overspending on fuel.

In most cases, no. However, if you live in a listed building or conservation area, additional permissions might be required — especially for flue placement or oil tank positioning. We can advise on this during our site visit.

New condensing oil boilers are highly efficient — typically over 90% — meaning you’ll use less fuel and reduce emissions compared to older models.

Costs vary depending on:

• Boiler size and make

• Tank condition or replacement

• Flue type and location

• Complexity of the installation

We provide free, no-obligation quotes after a home assessment to ensure you get a fair and accurate price.

• OFTEC-registered engineers

• High-quality, energy-efficient boilers

• Reliable aftercare and servicing

• Honest pricing with no hidden costs

• Local, trusted experts with years of experience