Around 1.5 million UK homes are not connected to the mains gas grid. If you live in a rural area of Hertfordshire or elsewhere, chances are you rely on alternatives like oil, LPG, or even solid fuel for heating. While living off-grid comes with its challenges, the good news is that modern technology offers a wide range of efficient, sustainable, and reliable heating options.
In this guide, we’ll explore the best heating choices for off-grid properties, weighing up the pros and cons so you can make the right decision for your home.
What does “off-grid” mean?
An off-grid home simply means there’s no direct access to mains gas. Instead, homeowners must rely on alternatives like:
- Oil tanks
- LPG (liquefied petroleum gas) storage
- Electric heating systems
- Renewable technologies such as heat pumps or biomass
Choosing the right system is essential for comfort, efficiency, and controlling long-term running costs.
1. Oil boilers
Oil has been the traditional choice for off-grid homes for decades. Modern condensing oil boilers are far more efficient than older models, often achieving over 90% efficiency.
Pros:
- Reliable and familiar option
- Wide range of boiler models available
- High output makes it suitable for larger properties
Cons:
- Prices of oil can fluctuate significantly
- Requires space for an external storage tank
- Higher carbon emissions compared to greener alternatives
Oil boilers are still popular, but many homeowners are now looking to phase them out in favour of lower-carbon systems.
2. LPG boilers
LPG (stored in a tank or cylinders) is another common choice. LPG boilers work much like mains gas boilers, and many models are available as LPG-ready or easily convertible.
Pros:
- Cleaner-burning than oil, with lower CO₂ emissions
- Similar performance to natural gas boilers
- Tanks can be sited above or below ground
Cons:
- Requires regular fuel deliveries
- Still a fossil fuel, so not the most eco-friendly option
- Running costs can be higher than natural gas
For homes wanting the familiarity of gas without the grid connection, LPG is a practical option – especially if space for oil storage is limited.
3. Biomass boilers
Biomass boilers burn organic materials such as wood pellets, logs, or chips. As a renewable source, biomass can dramatically reduce your carbon footprint, and government incentives have made it more attractive in recent years.
Pros:
- Renewable and sustainable fuel source
- Lower carbon emissions than oil or LPG
- Can be highly cost-effective if you have access to affordable fuel supplies
Cons:
- Requires storage space for pellets or logs
- Higher upfront installation cost
- Regular maintenance and cleaning needed
Biomass is particularly well-suited to rural off-grid properties with space for storage and easy access to wood fuel.
4. Heat pumps (Air Source and Ground Source)
Heat pumps are one of the fastest-growing alternatives for off-grid homes. Instead of burning fuel, they extract heat from the air or ground and use it to warm your home.
Air Source Heat Pumps (ASHPs):
- Easier and cheaper to install than ground source
- Can save up to £1,300 a year compared to old electric heating
- Work well with underfloor heating or larger radiators
Ground Source Heat Pumps (GSHPs):
- Extremely efficient, with a steady heat output year-round
- Best for properties with land for boreholes or ground loops
- Longer lifespan than most heating systems
Cons of heat pumps:
- Higher upfront cost than oil or LPG boilers
- Best suited to well-insulated homes
- May need larger radiators or underfloor heating for maximum efficiency
With government support such as the Boiler Upgrade Scheme (offering grants up to £7,500), heat pumps are becoming an increasingly attractive option for off-grid homeowners.
5. Electric heating
Some off-grid homes use direct electric heating (such as storage heaters or panel heaters). While simple to install, it’s usually the least cost-effective option due to high electricity prices.
Pros:
- Simple installation
- No need for fuel deliveries or tanks
- Works well for smaller or secondary properties
Cons:
- High running costs
- Limited control and comfort compared to other systems
- Not efficient for larger homes
Electric heating is often best used as a temporary or supplementary solution, rather than the main system in a larger property.
Which heating option is best?
The “best” heating system depends on your property and priorities:
- Looking for lower costs right now? Oil or LPG may suit you best.
- Want to go greener? Biomass or a heat pump is worth serious consideration.
- Limited space for fuel storage? An Air Source Heat Pump is often the most practical.
- Large rural property with land? A Ground Source Heat Pump could be ideal.
The bottom line
Being off the mains gas grid doesn’t mean you’re stuck with high bills or outdated technology. From efficient oil and LPG boilers to renewable solutions like biomass and heat pumps, today’s off-grid heating options are more reliable and sustainable than ever.
At NCS Plumbing & Heating, we’ve been helping homeowners across Hertfordshire and the South East find the right heating solutions since 2000. Whether you’re upgrading an oil boiler, switching to LPG, or exploring renewable energy with a heat pump, our expert team can advise, install, and maintain the perfect system for your home.
Looking for the best heating solution for your off-grid home?
Contact us today for a free, no-obligation quote and expert advice tailored to your home.
