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LPG systems can be an excellent alternative to mains gas systems when correctly installed. Here's why:

• Highly efficient, often running at over 90 per cent efficiency

• More affordable than some other types of systems e.g. oil systems are more expensive

• Large variety of choice when it comes to size of tank and different models

• Not too noisy

• Low carbon emissions compared to many other central heating systems

• Low maintenance

When considering installing a LPG central heating system, it's important to also understand any drawbacks, such as:

• Space needed for an LPG tank, although it’s possible to choose an underground tank
• You’ll need to arrange for regular deliveries of LPG
• Price fluctuations depending on the LPG market

According to Which, the average annual cost to run your LPG system is £796. This figure is based on a household using 12,000 kWh a year.

This is typically more expensive than mains gas, but cheaper than electric heating. But costs depend on insulation, boiler efficiency and how much heating you use.

When choosing a new central heating system, it’s important to consider all the options available. They include:

• Oil central heating system: Similar to LPG systems, you’ll need a storage tank for your oil before it's used. Oil boilers can be efficient and more affordable to run than LPG

• Gas central heating system: Only an option if your home is connected to the gas mains grid. These systems are generally cheap to run and don't require a storage tank

• Electric central heating system: Another option if your home doesn't get a mains gas supply. Electric central heating systems use storage heaters to collect electricity during the night to be used throughout the day

Tip: Check out our central heating installation cost guide for a rundown on prices for the above. Or speak to a certified central heating engineer for an exact quote.

As with mains gas central heating systems, you shouldn’t try to install an LPG system yourself. LPG can be dangerous if not fitted by a qualified engineer and it’s illegal to do the work yourself.

Once you’re ready to have your LPG system installed, make sure you find a Gas Safe registered engineer to complete the job.

In most cases, planning permission isn’t needed for an LPG tank. However, the tank must meet strict safety distance regulations.

A qualified LPG heating engineer will guide you through this and make sure everything is installed correctly. They’ll usually start with a site visit to check:

• Where the tank can be safely installed (above or below ground)
• The correct tank size for your home and usage
• Required distances from buildings, boundaries and drains
• Access for future LPG deliveries

To help you find checked and reviewed engineers for LPG central heating installation in Londonderry, consider these tips:

• Read online reviews to determine their reputation and quality of work
• Verify their public liability insurance, so you know they’re covered against any potential accidents or damages
• Get multiple quotes from at least three tradespeople so you can compare prices and services
• Use Checkatrade and hire one of our approved members that have undergone up to 12 checks so that you can hire with confidence