You are making the choice of which boiler fuel is appropriate to your home. The two common options in the UK are gas and oil. Which one is suitable for your house, budget and future plans?
This manual provides easy to read concise facts on gas and oil boilers. You will find out how they operate, their running costs, safety, the environment and whether you can receive any help in schemes like the free boiler scheme.
Continue reading in order to make a sure decision.
How Gas and Oil Boilers Work
Gas and oil boilers warm water circulating throughout your house to warm radiators and bring hot water. They have the same job but consume alternative fuels:
- Gas Boiler
This burner is used to heat natural gas brought to your house via a main supply pipe. The majority of gas boilers currently are condensing and take advantage of the heat in the exhaust to enhance efficiency.
- Oil Boiler
This is used to heat oil in a tank in your yard. Radiators and taps are also warmed using oil boilers. Contemporary oil boilers may be effective, and they require an enclosed tank and frequent deliveries.
Note: Both can be either combi boilers (no hot water cylinder) or can operate on a cylinder. In rural places, oil is still prevalent, even in the absence of the gas grid. A gas boiler can be real easy when on mains gas.
Supply and Availability of Fuel
The place of residence is a big factor in fuel choice.
- Mains Gas
In case you are connected to the gas, you receive regular fuel through a pipeline. It is also convenient and it is generally less expensive per kWh than oil.
- Oil Tanks
In case you are off grid you are required to keep oil stored on-site in a tank and get it delivered. This is depending on residence but must have space and be placed out of the way.
- Deliveries and Volatility of Prices
Oil prices fluctuate and you are likely to receive delivery delays when conditions are extreme. Gas prices switch, however, more predictable in terms of supply in regard to connected homes.
- Alternatives
In case you consider giving up fossil fuels, visit such pages as electric boilers, or heat pumps such as electric boiler vs gas boiler or air source heat pump vs gas boiler.
Efficiency and Performance
Efficiency is a measure of the proportion of the fuel energy converted to useful heat.
1. Condensing Boilers
The majority of the modern gas boilers are condensing and have high efficiency (usually 90% or higher). They utilize exhaust gas heat.
2. Modern Oil Boilers
The newer oil boilers are also condensing in nature and can also achieve high efficiency but are usually a little bit behind the best gas models.
3. Efficiency
Your heating system is also a factor in efficiency. A boiler of appropriate size with appropriate controls (thermostats and TRVs) would perform better, regardless of the fuel. To obtain suggestions on the type of boiler, refer to Types Of Boilers
4. Real-world Efficiency
The actual usage of the heating, the extent of insulation and the controllers will influence real bills more than a slight variation in the efficiency of the lab.
Running Costs and Factors which Influence them
The cost of running is affected by the price of fuel, boiler efficiency and home heating.
- Fuel Prices
In most instances, gas per kilowatt hour has been less expensive than oil, though not everywhere. Monitor national trends, local oil delivery rates.
- Effect on Efficiency
An efficient boiler burns less fuel to produce the same amount of heat thus efficiency saves money.
- System Controls
Well designed controls such as a programmer, room thermostat and TRVs will save unnecessary heat and decrease billing.
- House Size and Insulation
The bigger or not well insulated house will consume more fuel, whichever the type of boiler.
Comparison by example: When gas is accessible, it is cheaper to operate on by many homeowners. Running costs may be more in case you need to store oil and make deliveries but precise details may be determined by the present cost of fuel and the consumption of your home.
Initial Costs and Practical Problems
The decision can be altered by initial cost and working practice.
1. Boiler Cost
New boilers are different in size and type. Gas combi boilers are widespread and are usually cheaper to install in gas-related houses. Installation may also be costly, in terms of oil boilers requiring a tank and safe location.
2. Labour Necessary
A gas boiler could be installed easily in case you already have a gas supply. Installation or replacement of an oil boiler might require installation of a tank and safe pipework.
3. Conversion Costs
With conversion, it turns out to be very costly in case you wish to change oil to gas and you are not on the gas grid. Take into consideration the costs and make sure you can do it with an alternative.
4. Grants and Help
There are grants which can be used to assist in replacements or upgrades.
are only a few examples of check pages to see whether you are eligible.
Maintenance, Servicing and Reliability
By maintaining a boiler, it can be safe and efficient.
- Servicing
Gas and oil boilers should be serviced by a registered engineer on an annual basis. This makes them secure, effective and dependable. To maintain the safety see Ensuring Boiler Safety And Efficiency In The UK
- Oil-Specific Care
Oil boilers should be equipped with a clean burner and sometimes their filters are required to be changed. The oil tank must be examined against leakages and corrosion.
- Gas-Specific Care
Gas boilers should be verified with regards to the flue and the combustion. Gas boilers are to be serviced by a registered gas engineer.
- Reliability
Both of them are reliable under service. The old boilers of either fuel can be less effective and more vulnerable to malfunctions.
Lifespan and Replacement
Think about replacement and life expectancy when you are planning about the future. A regularly serviced boiler has a life of 10 to 15 years or more. Life is based on the quality of its care.
1. Signs to Replace
Problems such as increased frequency of breakdowns, increased bills and inability to acquire parts are signs that maybe time to replace the boiler. This is found at the page before Replacing the Boiler.
2. Future-Proofing
The UK is shifting towards cheaper heating. Consider switching to low-carbon technology heat pumps or electric boilers, would it be reasonable to switch? The answer to this question is yes, only when you think long-term.
Environmental Effects and Emissions
The emissions are of concern to the homeowners and the regulations of the future.
- Emissions of Carbon
The amount of CO2 per kWh of oil burnt exceeds the amount of CO2 in the gas burned. Direct emissions of gas are usually smaller than those of oil, in case carbon reduction is important.
- Local Pollution
There is a minor threat of oil spills in storage. The two types of fuels release NOx and particulates to varying degrees, modern appliances reduce this.
- Net Impact
Viewing the entire things of your home like insulation, controls and driving less energy use results in a reduced emission than a minor difference in a fuel choice.
- Transition Plans
Grants and schemes are being used to promote the heating to be low-carbon in the UK. In case you need to get out of fossil fuel usage, you can consider such options as electric boilers and heat pumps.
Safety Thesis and Practical Issues
When the installations and maintenance of the system are proper, both fuels are safe.
1. Carbon Monoxide
It is a gas that could manifest itself in any fuel-burning boiler. Install a CO detector and have your boiler serviced once every year.
2. Safety of Oil Tanks
The oil tanks should be positioned correctly and inspected against leakages. A sturdy tank will eliminate spills and risks.
3. Flue and Venting
The two types require an unobstructed and adequately ventilated flue. Obstructed flues are unsafe and they should be repaired by an engineer.
4. Regulations
Gas work should be performed by a Gas safe registered engineer. Qualified heating technicians should do the oil work.
What Kind of Type is More Appropriate at Home?
These uncomplicated rules may help you make this decision.
If You have Mains Gas
Gas boilers tend to be less complicated, less expensive to operate and maintain. They have been popular among UK homes.
If You are Off the Gas Grid
The probable thing to consider is oil since you are not supplied with gas. Consider the price of an oil tank and deliveries.
If You want Lower Carbon
The electric boilers or heat pumps should be considered.
In case You Require Little Space or Hot Water
Combi gas boilers are the most convenient ones, whereas oil combos are not as popular.
Grant Programmes and Assistance with Replacements
You may be in a position to receive grant assistance to substitute an aged boiler particularly when your home satisfies some regulations.
ECO4 and Free Boiler Support
ECO4 scheme and other assistance can offer free assistance to households to replace inefficient boilers.
Who May Qualify
Eligibility also frequently varies based on advantages, earnings and the effectiveness of your present warming. Assessors will examine your type of boiler, your age and fuel. When you are aware of your system type and age of the boiler, then it is faster.
Other Grants
In other regions of the UK, the local or devolved schemes (such as Scotland) might provide some extra assistance. See Boiler Grants Scotland.
What To Have Ready: When you look into the eligibility of the grants, prepare some basic information: what type of boiler you have (combi/system/regular), what type of fuel (gas/oil) you use, the age of your boiler and what are the apparently obvious faults. Unique information accelerates eligibility tests.
The Way Home Energy Guide Can Help
Home Energy Guide is dedicated to the plain and simple description of grants and eligibility. We are not selling in terms of installation. Rather, we describe which households are potentially eligible to receive assistance, what data will be required by the information assessors and how controls and types of systems influence eligibility. Compare types of boilers, determine whether the technology is electric or not, and get familiar with such grants as the ECO4.
Have a question? Contact us today
Frequently Asked Questions (FAQs)
It will be dependent upon the local fuel prices and the efficiency of your boiler. In case you have mains gas, gas can become cheaper per kWh. In case you depend on oil deliveries, the prices may be even more expensive and depend on the price of oil and delivery fees.
It might be rather expensive to switch to it in case your house does not have any gas connector. You can require a new supply of gas or major pipework. Alternatives that can be checked such as electric boilers or heat pumps in case of a high cost of conversion.
Yes, still used in rural gas-off households in oil boilers. Policy is shifting to low-carbon heating. In the long run grants and schemes could promote greener decisions.
Once a year your boiler should be serviced. A gas boiler should be serviced by a Gas Safe qualified engineer and an oil boiler by an engineer registered by OFTEC. Maintaining an annual report assists in the safety, efficiency and any grant or warranty examinations.
Yes, it may do so, ECO4 is aimed at houses that are not efficiently heated and that meet some household requirements. It is open to anyone based on income, benefits and the condition of your current boiler (age, efficiency and fuel).
Yes, you need to notify your insurer of any changes you intend to make to the type of fuel since cover and premiums may vary. Any new installation shall be by a registered engineer (Gas safe in the case of gas, OFTEC in the case of oil) and comply with building safety and regulations. You might also require the work on flues, pipework or to remove an oil tank which will be required to be documented by the insurers.
Yes frequently, oil systems require external tanks, frequent oil deliveries and periodic tank inspections against leakage or corrosion. Filter and burner services are also more frequent in oil boilers as compared to gas boilers. In case you do not have much space outdoors, consider the site and access of tanks in your selection.
