September 13, 2019


Which Boiler is Best for You Gas Boiler or Oil Boiler?

Considering a new boiler for your home but not sure which way to go? In this article, we will help you get better understanding and make wise decisions. 

Before diving into the specifics of gas and oil boilers, it’s crucial to understand your own needs and expectations from a new boiler system. Are you focused on minimizing your monthly fuel expenses? Or perhaps you prioritize the environment and sustainability? 

By defining your needs and expectations early, you’ll be better able to select the boiler that best aligns with your objectives and keeps your home warm.

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Gas Boiler VS Oil Boiler

gas boiler vs oil boiler

Boilers work by heating water and circulating it through your home to keep it warm. 

Gas boilers are typically more affordable for households compared to oil boilers. They have cheaper installation costs and reduce monthly fuel expenses. Additionally, gas boilers are simpler to run on a daily basis compared to oil boilers.

However, replacing an oil boiler with a gas boiler can be a significant investment, both financially and in terms of labor. It’s important to weigh the pros and cons of each option, considering factors like energy efficiency, longevity, maintenance needs, and overall expenses.

Here, we provide the pros and cons of each boiler type to help you decide which one is right for you.

✅ Pros of the Gas Boiler


While prices of both gas and oil boilers depend on the model and company, gas boilers are generally cheaper than oil ones.

Green Energy

Natural gas is more nature-friendly than oil. The Annual Fuel Utilization Efficiency (AFUE) estimates natural gas boilers to be 90 percent efficient! It’s good for both the planet and your wallet.

No Storage Problem

Gas is supplied directly to your home through pipes, so you don’t have to worry about fuel storage for your boiler.

❌Cons of the Gas Boiler

Connection Problem

You’ll have to depend on the municipality for the supply of gas. If your area doesn’t have a gas supply, you can’t have a gas boiler.


Installation and maintenance of gas boilers can be expensive as you have to connect it to the main supply line. The cost of pipes and labor can be substantial.

Gas Leaks

Carbon Monoxide gas leaks can occur if the connections are not maintained properly, potentially resulting in fire or explosion.

✅ Pros of the Oil Boiler


You don’t have to depend on the municipality for the supply of oil; you can buy it from a local vendor and store it without worrying about supply.

Clean Energy

Surprisingly, some companies now mix oil with biodiesel. Biodiesel blended oil burns much cleaner than traditional oils.


Since the availability of oil mostly depends on you, you don’t have to rely on the gas supply or electric supply to heat your home. You only need to get it delivered and stored.

❌Cons of the Oil Boiler

Storage Problem

While oil boilers offer freedom, they also require storing fuel on your premises. You can only store a limited amount of oil and must take care of the stored fuel, which can be stressful.


Oil cannot be produced by yourself; you have to rely on your local vendor for its supply and delivery. If you run out of fuel in adverse weather, you would not be able to heat your home.

Traditional Oil

If your local vendor doesn’t sell biodiesel blended oil, your oil boiler will harm the planet.

New Considerations in Boiler Choice

Energy Efficiency and Environmental Impact

With increasing focus on environmental sustainability, energy efficiency is a crucial factor when choosing a boiler. Modern gas boilers have higher efficiency ratings compared to older models, often exceeding 90%. Oil boilers, especially those that use biodiesel blends, are also improving in efficiency but typically don’t match the efficiency of gas boilers.

Government Regulations and Incentives

In the UK, there are various government incentives aimed at encouraging the installation of energy-efficient heating systems. For example, the Boiler Upgrade Scheme offers grants for homeowners to replace old, inefficient boilers with more energy-efficient models. It’s worth checking if you qualify for any such incentives, which could make the switch to a new boiler more affordable.

Our Service

At The Boiler Installation Specialists Ltd., we’re your trusted experts for boiler services in Harlow and nearby areas. As accredited installers for Worcester Bosch, we offer top-quality installations tailored to your needs. With a focus on exceptional customer service and local expertise, we ensure a smooth experience from start to finish. Choose us for reliable, personalized boiler solutions for your home.


To summarise, when it comes to selecting the right boiler for your home, careful consideration of your specific needs and priorities is essential. While both gas and oil boilers offer their own advantages, such as cost-effectiveness and ease of operation, making the right decision requires weighing factors like energy efficiency, maintenance requirements, and environmental impact.

Whether you’re looking to upgrade to a more efficient system or replace an old boiler, reaching out to trusted professionals like The Boiler Installation Specialists Ltd. can provide expert guidance and ensure a smooth installation process.

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