Oil Boilers

Oil Boiler Experts in Dorset

At Total Energy Services, we’re trusted local specialists in oil boiler installation, servicing and repairs across Dorset, Somerset, Wiltshire and Hampshire.

Our OFTEC-registered engineers are fully qualified, insured and experienced in working with all major oil boiler brands — from Grant and Worcester Bosch to Firebird and Warmflow.

Just as you’d only trust a Gas Safe engineer to work on a gas appliance, you should always use an OFTEC technician for any type of oil boiler work. It’s your guarantee of safety, efficiency and peace of mind.

Why choose Total Energy Services?

For over 30 years, our family-run company based in Blandford Forum, Dorset has been helping homeowners and businesses keep their oil heating systems running safely and efficiently.

Here’s why so many customers choose Total Energy Services year after year:

✅ OFTEC registered and fully insured engineers

✅ Over 25 years’ experience in oil heating systems

✅ Trusted locally – most of our work comes from recommendations

✅ Friendly, professional and reliable service

✅ Fully staffed office offering dedicated customer care

✅ Which? Trusted Trader and RECC & MCS  member

From routine servicing and emergency breakdowns to complete oil boiler replacements, our experienced engineers deliver honest advice, fair pricing and quality workmanship every time.

Oil Boiler Servicing in Dorset

Just like gas and LPG boilers, oil boilers should be serviced every year to keep them running safely and efficiently. At Total Energy Services, our OFTEC-registered engineers provide reliable oil boiler servicing across Dorset, Somerset, Wiltshire and Hampshire.

An annual service helps to improve performance, reduce fuel costs, and minimise the risk of breakdowns — keeping your home warm and your heating system in top condition all year round.

Why an Annual Oil Boiler Service Matters

Regular servicing is essential for both safety and efficiency. During your oil boiler service, our qualified engineer will:

✅ Inspect and clean internal components

✅ Check combustion and flue operation

✅ Replace the oil nozzle and filters (if required)

✅ Test safety controls and system efficiency

✅ Identify any potential faults early

A well-maintained oil boiler uses less fuel and runs more reliably — saving you money and stress in the long term.

Most manufacturers also require proof of annual servicing to keep your boiler warranty valid, so keeping up to date protects your investment too.

Read more about oil boiler servicing.

Oil Boiler Repair in Dorset

When your oil boiler breaks down, you need a fast, reliable engineer you can trust. At Total Energy Services, our OFTEC-registered engineers provide expert oil boiler repairs across Dorset, Somerset, Wiltshire and Hampshire.

We know how disruptive a boiler fault can be — that’s why we aim to get your heating and hot water restored as quickly as possible.

Expert Repairs from OFTEC-Registered Engineers

Using an OFTEC-qualified technician ensures your boiler is repaired safely and correctly. Our engineers are fully trained to diagnose and fix faults on all major oil boiler brands including Grant, Worcester Bosch, Firebird and Warmflow.

A faulty oil boiler not only reduces efficiency and increases fuel bills, but if left unchecked, small issues can put strain on other components — leading to more costly repairs later on.

Whether it’s a loss of pressure, ignition problem, oil leak or a no-heat emergency, we’ll quickly identify the cause and carry out reliable repairs to get your system running smoothly again.

Read more about oil boiler repair.

New Oil Boiler Installation in Dorset

If your existing oil boiler is old, unreliable or breaking down frequently, it may be beyond economical repair (BER). At this point, upgrading to a new energy-efficient oil boiler can save you money on fuel bills and give you peace of mind for years to come.

At Total Energy Services, our OFTEC-registered engineers specialise in oil boiler installations across Dorset, Somerset, Wiltshire and Hampshire. We’re accredited installers for Grant and Worcester Bosch oil boilers — two of the most trusted brands on the market.

Why Replace Your Old Oil Boiler?

Older oil boilers are often less efficient, more prone to breakdowns, and costlier to run. Replacing your outdated system with a modern condensing oil boiler can:

✅ Improve energy efficiency to over 90%

✅ Significantly reduce fuel bills

✅ Lower carbon emissions

✅ Provide reliable heating and hot water

✅ Ensure compliance with current regulations

✅ Include a long manufacturer warranty for peace of mind

Many of our customers notice immediate improvements in performance and running costs after their installation.

What Is a Condensing Oil Boiler?

Older, non-condensing boilers allow a large amount of heat to escape through the flue. This means they can be as little as 60% efficient — for every £1 you spend on fuel, you could be wasting around 40p.

Modern condensing oil boilers recover heat from the exhaust gases and use it to preheat the cold water entering the system. This process dramatically increases efficiency to around 90% or higher, meaning you only waste about 10p in every £1.

Top manufacturers like Grant and Worcester Bosch lead the way in condensing technology, offering high performance and excellent warranty cover.

See our article on oil boiler energy efficiency.

How long does an oil boiler last?

Typically an oil boiler will last the similar amount of time as a gas boiler which is between 10 – 15 years.  Warranties for oil boilers if installed by an accredited installer are usually between 7 – 10 years.

For more information on how long a boiler should last see our helpful article. 

Benefits of a combi oil boiler

An oil combi boiler (or combination boiler) provides both your heating and hot water directly from one compact unit — without the need for a separate hot water cylinder or cold water tank. This makes it an excellent choice for homes where space is limited or where you want instant hot water on demand.

Modern oil combi boilers are highly efficient and use condensing technology to maximise energy savings, with some models achieving over 90% efficiency. Brands such as Grant and Worcester Bosch offer reliable oil combi boilers designed for rural homes not connected to mains gas — making them a perfect option for properties across Dorset, Somerset, Wiltshire and Hampshire.

Whether you’re upgrading from an older system or fitting a new installation, our OFTEC-registered engineers can help you choose the best combi boiler for your home’s size and hot water needs.

Accredited Installers for Worcester Bosch and Grant Oil Boilers

At Total Energy Services, we’re proud to be accredited installers for both Worcester Bosch and Grant — two of the UK’s leading manufacturers of high-efficiency oil boilers. Both brands are recognised for their award-winning condensing technology, reliability, and long product lifespans.

The Grant Vortex Blue Flame range, for example, uses cutting-edge blue flame technology to produce a cleaner, more efficient burn — reducing emissions and helping protect the environment while keeping your home warm and comfortable.

As accredited installers, our OFTEC-registered engineers receive specialist training and can offer extended manufacturer warranties on new installations. Every boiler we fit is carefully specified to suit your home, family and heating requirements, ensuring maximum efficiency, comfort and long-term reliability.

When you choose Total Energy Services, you’re choosing trusted local experts backed by leading boiler brands and over 30 years of professional experience.

Read more about top oil boiler brands here