Boiler Care

Best Oil Central Heating Boilers for Your Home

If you’re not connected to the national gas grid, finding alternative fuels for your heating and hot water needs is a must. While electricity and LPG are options, their high boiler installation costs can be off-putting. That’s why heating oil systems tend to be the go-to solution for many off-grid homeowners.

In this post, we’ll delve deeper into the world of oil boilers. We’ll discuss the different types of boilers available and the best brands for your home and needs.

3 types of oil boilers for your home

When it comes to choosing an oil boiler, it’s not just the brand you need to consider. Some heating systems may dictate the type of boiler you need to heat your home. Below are the three most common boiler types:

1. Regular boilers

A regular boiler, also known as a traditional or conventional boiler, is the most common type found in UK homes. This option requires a cold water storage tank and a hot water cylinder to store and heat the water.

Regular boilers are best suited for homes with more than one bathroom and those with high hot water demands.

2. System oil boilers

System boilers work just like regular oil boilers, except you don’t need a cold storage tank in the loft. Whilst this doesn’t make the installation cost any cheaper, it means one less thing to repair in the future.

If you live in a 4-5+ bedroom property and often use 2+ showers at once, we recommend opting for a system oil boiler over its regular counterpart.

3. Combi boilers

A combi boiler, short for combination boiler, is a popular choice for properties with limited space, thanks to its compact form. Combi boilers provide heating and hot water from a single unit, so there’s no need for a separate hot water cylinder or cold water storage tank.

It’s worth noting that oil combination boilers can only handle a single shower being used at any given time. So, this option is only suitable for properties that don’t have high heating or hot-water demand.

Regular maintenance is essential for all boiler types to ensure optimal efficiency and peace of mind. Explore our 7 top tips for boiler care and maintenance.

Best oil boiler brands for home heating

When it comes to finding the right boiler for your oil central heating, it’s important to look into different brands and consider their reputation and longevity. The longer a brand has been around, the better it’s likely to be.

At Certas Energy, we stock the best oil fired boilers from leading manufacturers like Grant and Worcester Bosch. Find out what they have to offer below.

Grant Oil Boilers

It’s no secret that Grant is a top player in the market, producing some of the best oil boilers for home heating. Their Grant Vortex and VortexBlue models are particularly outstanding, boasting impressive energy efficiency levels of up to 93.3% gross.


When you’re shelling out a significant amount of money on a new boiler, you want to ensure that you’re covered with a long-lasting warranty. Unfortunately, many of the lower-priced oil boiler brands provide warranties of only one year or none at all.

Grant oil boilers, including the Vortex and VortexBlue, come with a five-year warranty, provided they are installed by an accredited engineer.

Grant oil boiler range

Due to Grant’s extensive range, it’s not a case of finding the most suitable oil boiler for your property. Their range is so vast, oil boiler engineers will be able to pinpoint the exact boiler for your home. The range includes:


Vortex Eco

Vortex Pro

  1. Internal
  2. External
  3. Combi
  • Utility
  • External
  • Wall Hung (Internal)
  • Wall Hung (External)
  • Utility
  • External
  • Internal Comi

Worcester Bosch Oil Boilers

It’s safe to say that Worcester Bosch needs no introduction. Not only are they the leading brand when it comes to producing combi gas boilers, but they’re equally as prominent in the oil boiler industry.


Worcester Bosch’s oil fired central heating boilers come with a warranty of at least two years. But it’s best to double-check with our engineers for the exact warranty term of the model you plan to install.

Worcester Bosch oil boiler range

Similar to Grant, Worcester Bosch offers a diverse range of oil boilers in varying shapes and sizes. It’s best to consult our OFTEC-registered engineers before making a final decision on which Worcester model to select.

Worcester Bosch presents two distinctive ranges to choose from, namely the Worcester Bosch Greenstar Danesmoor and the Worcester Bosch Greenstar Heatslave II. What’s more, you have the flexibility to install them either internally and externally.

You can also select a boiler with a kW output that’s a direct replacement for your existing appliance and choose between combi, system, and regular boiler types.

So what’s the best boiler for me?

Choosing the best boiler for your home depends on several factors, including the size of your property, your hot water and heating requirements, and your budget. It’s important to select a boiler that can provide sufficient hot water and heating while being efficient and reliable. You should also consider the brand, energy efficiency rating, and warranty.

Our OFTEC-registered engineers can assess your home and recommend the most suitable and efficient boiler for your household. They can also provide further details about the different brands and models available.

Contact us today on 0345 600 4040 to speak to our experts about your requirements. Alternatively, read our boiler maintenance guide for knowledge on how to keep your boiler in excellent condition for years to come.

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