Boiler Guide : Best Oil Boiler | Pros, Cons & Prices

Here at Boiler Guide we know a thing or two when it comes to oil boilers and we’re here to help you choose the best oil boiler for your home. Before you decide which is best for your home you’ll need to think about energy efficiency, the length of warranty and performance, and weigh these up against the important cost of installation.

To save you a bit of time in your search for a brand new oil boiler, we’ve compared the 5 best oil boiler manufacturers and models, as well as the pros and cons that come with an oil boiler replacement.

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What is an oil boiler?

An oil boiler is a heating system that uses oil to produce heat. It’s also called an oil-fired boiler, or simply an “oil burner.”

Oil boilers are more efficient than gas boilers and can produce more heat per unit of fuel than gas-fired systems. However, they’re also more expensive to purchase and maintain than comparable gas models; you’ll have to factor this into your decision if you’re looking for a long-term investment in your home’s heating system.

Another thing to consider when comparing these two kinds of boilers is their environmental impact: unlike some other types of fuel energy sources (like solar or electric), burning fossil fuels like crude oil will release carbon dioxide and other greenhouse gases into the atmosphere—which contributes not only directly but indirectly as well as negatively affects air quality around us as well as our environment at large!

How does an oil boiler work?

An oil boiler works by heating the water in the tank of your home, which then heats your entire home. The heat is transferred to the water through heat exchangers that are located within an enclosed area of storage tanks. These heat exchangers carry out four main functions: they pump heated fluid from burner to tank; they circulate cold fluid through coils around burners; they transfer heat from hot fluid leaving burner to cold entering collector; and they transfer heat from hot collector back into main circuit when return valve opens up again.

The process begins with a small amount of fuel being injected into a combustion chamber where it mixes with air and burns at high temperatures—around 1,500 degrees Celsius (2,732 Fahrenheit). This generates enough energy to heat the water in your boiler tank and all other pipes connected throughout your house via another set of valves (which work like thermostats). When this happens, you can feel comfortable knowing that everything is working as planned because now you’re able to enjoy warm showers or baths without having to worry about turning up any dials!

Types of oil boiler

There are three main types of oil boilers:

  • The first type is the condensing oil boiler which uses a heat exchanger to transfer the heat from the gas flame into an external water tank. This is then used to heat your home or business.
  • The second type is either a wet back or dry back oil-fired system, both of which use an air inlet valve to mix combustion air with hot flue gases before releasing them outside through an exhaust fan. While this makes for a more efficient burn process, it also means that you will need to install an external chimney stack on your property as well as additional ducting and insulation materials within your home or business premises.
  • The third type would be direct fired steam boilers where there’s no need for any kind of secondary heating source because they can generate all their own power internally through burning fuel directly instead of just transferring it elsewhere first like with other types do (which makes them great if you live somewhere remote where there aren’t many connections available locally). However these tend not be as cost effective at generating electricity because they usually cost more upfront and require ongoing maintenance throughout their lifespan too so bear this in mind if considering buying one!
boiler guide : best oil boiler | pros, cons & prices
boiler guide : best oil boiler

Are oil boilers better than gas?

Oil boilers are better than gas boilers. They are more efficient, reliable and environmentally friendly. The main reason oil boilers are more efficient is that they can use a higher grade of fuel than gas boilers which allows them to generate more heat from the same amount of energy input. Oil boilers also have a longer lifespan because they don’t contain moving parts like electric elements in a gas boiler do which means there’s less wear on your system as well!

Oil boilers can run on renewable fuels such as biogas or hydrogen but this isn’t something we recommend unless you really want to go down that route with your heating system!

How efficient is an oil boiler?

As you can see, oil boilers are a great option for keeping your home warm. They’re more efficient than their gas counterparts and just as efficient as electric boilers. In fact, they’re more than twice as efficient as an oil boiler!

So how do they work? Well, it’s all about the heat. You see, when you burn wood or coal to heat your home it creates smoke that fills up your house with dirty fumes that make you sick and give off tons of carbon dioxide (CO2). This is bad for the environment because when CO2 gets into our atmosphere it traps heat from escaping into space and causes global warming (if you don’t believe me ask Al Gore about it). However if we can harness all that energy from burning wood or coal then we could use it to power our homes instead of wasting so much energy heating them up with dirty old fossil fuels like natural gas or oil …

How long do oil boilers last?

A good oil boiler will last 20-30 years, and is more reliable than gas but less reliable than electric. It’s also more efficient than gas but less efficient than electric. Finally, it’ll be cheaper to run than a gas boiler but more expensive to run than an electric one.

Are oil boilers expensive to run?

Oil boilers are more expensive to run than gas, but cheaper than electric.

However, they’re also more efficient and provide a more reliable source of heating for your home.

This means you’ll spend less money on your oil boiler in the long run.

Best oil boilers

You might be wondering how to choose the right oil boiler for your home. It’s important to note that there are many different types of boilers and each one is designed for a specific purpose. Here are some things to consider when making your choice:

  • How much space do you have in your home?
  • How big is your family?
  • Will the boiler be used often, or only occasionally?

For example: If you have a large family, it makes sense to buy more than one unit so everyone can get warm at once! This may seem like an obvious conclusion but take note that it doesn’t always work this way. Some people have found success by buying multiple units which saves them money on heating costs while also saving up their money over time through lower monthly utility bills.”

Comparing oil boiler efficiency

One of the main advantages of a boiler over other heating systems is that it’s more efficient.

Oil boilers are more efficient than gas, which in turn are more efficient than electric, LPG and oil. In fact, oil is considered to be one of most energy-efficient heat sources available today. It can provide around 80% efficiency whereas coal can only achieve about 40%.

The use of an oil boiler has been proven to have significant environmental benefits too: solid fuels such as coal produce toxic emissions such as carbon monoxide and sulphur dioxide during combustion; these pollutants are harmful for humans and animals alike so reducing their production helps prevent air pollution-related diseases like asthma attacks or heart disease caused by prolonged exposure over time.[1]

Oil boiler prices

Let’s get down to brass tacks: oil boilers are more expensive than gas boilers.

  • Install costs:
  • Running costs:
  • Replacement costs: A replacement boiler will cost you around $3,300 on average if bought from a reputable installer, but if you choose to buy online then be sure to check for reviews and look for the best deal. Keep in mind that this price does not include installation or annual servicing charges.
  • Repair costs: If anything goes wrong with your oil burner system (and that includes electrical faults), it’s likely that an electrician will need to come out and make repairs. You can expect this bill to cost at least $100 per visit plus parts needed for the repair job itself; some jobs may require multiple visits depending on how complicated they are.

It should go without saying by now that maintaining an oil boiler requires extra money spent over time—much more so than maintaining a gas heater would require!

Oil boiler installation costs

Oil boiler installation costs can vary depending on the size of your oil boiler, so be sure to consider this when making your decision. If you’re installing a large boiler, you may need to hire a plumber and/or gas fitter to make sure everything is done correctly. This will add an additional $500-$2,000 to your total cost—but remember that it’s worth getting it right!

What size oil boiler do you need?

A typical homeowner will need an oil boiler that is between 5KW and 20KW, depending on the size of the property and number of people in it. If you live alone and don’t have many appliances, such as washing machines or dishwashers, then a smaller boiler may be sufficient. If your home has a larger family with lots of devices running at once and several showers going at once, then you’ll probably need a bigger unit.

The first step in choosing an oil boiler is to get an idea of how big your home is going to be by measuring the internal dimensions (length x width) in meters. Then work out which rooms you want heated—kitchens; bathrooms; living areas—and count up how many radiators there are per room (this includes central heating systems). Add all these together so that each room should receive approximately 1 square metre per person or appliance within them.


Now you have a better idea of what an oil boiler is and how it works. You can also see how long they last, and how efficient they are. We hope this article has helped you decide if an oil boiler is right for your home. If so, please contact us today and we’ll be happy to give you a quote!