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Best LPG Boiler Models For Small, Medium & Large Properties

Looking for a new LPG boiler and don’t know where to start? No problem: we’ve done the hard work and put together this handy guide to the best LPG boilers. Here, we’ll cover everything you need to know to make an informed decision.

We’ll also talk about LPG boiler cost, sizes, types, warranties, and recommend some of the top LPG boiler models from well-known brands. And, you’ll learn how to get an LPG gas boiler installed without breaking the bank, and show you a way to get fixed prices on your screen.

Best LPG boilers

The Best LPG Boilers

If you’re looking for the best LPG boilers, we’d recommend sticking to top boiler brands. There are cheap LPG boiler brands out there, but the last thing you want to do is save on up-front costs, only to overspend on repairs and the inevitable, early replacement.

Sure, boilers can cost a lot; but their cost is just a fraction of what you’ll pay altogether. With fittings and installation, the total cost can almost double. We’d sooner spend an extra £100-200 on a quality boiler brand that lasts for 7-10 years or more.

Here’s another thing to consider. With a company like Heatable, you can get a Worcester boiler installed for a price that’s similar to what you’d pay for a lesser-known brand. You can get fixed LPG boiler prices from Heatable here.

Heatable boiler installations

You can’t really go wrong with products from any of the brands below:

  • Worcester Bosch
  • Ideal Boilers
  • Potterton
  • Vaillant
  • Baxi
  • Vokera Boilers
  • Glow Worm

However, we’ll urge you to consult an LPG installer first, as they can direct you to the optimal boiler for your property. Plus, they typically know about boiler deals at their local merchant.

But before you start browsing through LPG boiler models, you’ll need an answer to the following question:

What kW LPG Boiler Do You Need?

Take 60 seconds to understand what LPG gas boiler size you need (in kW), and this entire process will be much easier and faster.

LPG boilers are grouped in 3 size ranges. In the table below, you can see how boiler sizes correspond to your quantity of bathrooms, bedrooms and radiators:

Boiler Size (kW) Quantity of Radiators Number of Bathrooms Number of Bedrooms
24-27 10 or less 1 1-2 bedrooms
28-34 8-14 radiators 1-2 3-4 bedrooms
35-42 14-20 radiators 2 5+ bedrooms

Keep in mind — this isn’t a one-size fits all approach. It’s a guideline.

Whether you want to fill baths quickly, run taps and showers at the same time, have lots of open space, minimal insulation, or a conservatory, the goal posts will shift.

And that’s why it’s a good idea to get a quote from an LPG boiler installer. An installer will spec a boiler not solely based on your property, or the amount of radiators and showers. They’ll also consider your overall demand for hot water and heating.

Getting slightly confused and incredibly bored? I hear ya’ 😊

Here’s a quick and simple way to get an installer’s recommendation for the best-suited boiler for your property:

  1. Head over to Heatable
  2. Answer a few (anonymous) multiple choice questions
  3. Get boiler recommendations with fixed prices

Heatable are an online boiler installer with great connections to the biggest boiler manufacturers in the UK. Put simply, if you’re going to get the best deal on boiler installation, it’ll be through Heatable. You can get your own fixed-price boiler quotes by filling in Heatable’s anonymous questionnaire here.

Worcester Bosch Greenstar 4000

What Type Of LPG Boiler Do You Need?

Already know what LPG gas boiler you need? Skip ahead to the next section…

Much like natural gas boilers, LPG gas boilers come in main 3 types:

  • Combination
  • System
  • Regular

If you don’t want to spend extra cash, you’ll want to stick with the same boiler type you already have. For instance, it’ll cost you extra money to upgrade from a regular or system to a LPG combi boiler.

Once you know what type of boiler you need, you can get an instant fixed price (i.e. NO “extras” on installation day) online using this form from Heatable.

LPG Combi Boiler

With an LPG combi boiler, you’ll have no hot water tank (aka hot water cylinder) or cold water storage — combination boilers heat water on demand. This means you needn’t waste precious space on hot water cylinder or cold water feeder tanks.

Condensing LPG combi boilers are the most popular. They’re usually fitted in small-medium sized properties with 1-4 bedrooms.

The downside to LPG combi boilers is they prioritise domestic hot water over your radiators. So, have a 20 minute shower, and you’ll notice the heat in your home has dropped considerably.

If you have a large property and high hot water demand, it’s likely you’ll need a system or regular boiler. These heat water up prior to use, and store it. That means you’ll always have plenty of hot water, even if you’re using multiple showers and taps at once.

System LPG Boiler

An LPG system boiler combines a boiler with a hot water cylinder. So, it’s suitable for bigger properties (and those with high hot water demand). On the downside, you’ll need to give up some space to store the cylinder.

If your current setup has a boiler and cylinder (but no water storage tank in the loft), you need a system boiler.

Regular LPG Boiler

A regular boiler needs a cylinder AND a water storage tank. So, you’re talking about a lot of space here.

If you have a cylinder, boiler, and a storage tank (often installed in loft spaces), you’ll need a regular boiler.

If your engineer doesn’t think you need a system or regular boiler, there is the option to upgrade to a combi. This will remove the need for water storage tanks and free up space. However, the price of your LPG boiler installation will be much higher with this upgrade, compared to just replacing for the type of boiler you already have.

What kind of fuel does your boiler use?

Fixed price online with next day installation

Worcester boilers from as little as £1,965.

LPG Boiler Cost

There’s an incredible amount of choice on offer here; each brand has a variety of different models, in a range of price brackets. Some of these prices may surprise you — for instance, a Worcester LPG combi boiler may end up costing less than a Baxi equivalent of the same kW output (especially if you look on Heatable).

At any rate, here are the LPG boilers we think are the very best (boiler only, no installation, inc VAT):


Model Output (KW) Boiler Prices 
Worcester 28CDi Compact 24 £1,150
Vaillant EcoTec PRO 28 24 £1,100
Baxi DuoTec 28 24 £1,250
Worcester 38CDi Classic 30 £1,450
Worcester 34CDi Classic 30 £1,300


Model Output (KW) Boiler Prices
Worcester 24i 24 £1,150
Worcester 27i Compact 27 £1,250
Vaillant EcoTec Plus 630 30 £1,350
Ideal Vogue S32 GEN2 LPG 32 £1,200


Model Output (KW) Boiler Prices
Worcester 27Ri 27 £1,050
Worcester 30Ri Compact 30 £1,100
Worcester 40CDi Regular 40 £1,700
Vaillant EcoTec Plus 438 – Open Vent 38 £1,500

LPG Boiler Installation Cost

So, what prices should you expect to see on LPG boiler quotes? There’s no simple answer. If you want the detailed version, we’ve already created a guide to new boiler installation costs here.

Or, you can get a fixed price on screen over at Heatable.

Either way, expect your LPG boiler cost for installation to vary a great deal, based on:


First, you have labour. Are you using a large national company, or live in an area with a high cost of living, like London? There’s a good chance you’ll pay more than someone using a cheap local installer in the Midlands or the North.


What additional parts and materials are included in the itemised quote? Does the installer need to factor in extra for additional copper pipe for upgrading the gas main? Are you going for a premium LPG boiler over a cheap one? Are you using existing controls, or are they being updated too?

The list goes on. One thing worth noting is a lot of installers will include a boiler filter, which catches debris that would otherwise damage the boiler. If another installer isn’t including one as part of the price, expect to add around £200 to your quote.


Upgrades can cost a lot of money, too. Whether that’s a gas main upgrade, or you want to switch your regular/system to an LPG combi boiler.

Who Can Fit an LPG Boiler?

There seems to be a bit of confusion when it comes to who can fit an LPG boiler.

You need a Gas Safe registered engineer that has also completed their LPG qualification.For residential property, that’s CCLP1 PD.

We only recommend companies with LPG boiler installation accreditation, that also offer great value for money. Get your fixed price for your new boiler including installation within 90 seconds from Heatable.

FAQs About LPG Boilers

Before wrapping up this post, we’d like to answer a few common questions about LPG boilers.

What is an LPG boiler?

An LPG boiler is simply a boiler that runs on liquefied petroleum gas (also referred to as liquid petroleum gas). Many modern condensing boilers that are designed to work on mains gas can be converted to LPG.

Like oil boilers, LPG boilers are often used by households living off the nation’s gas grid. Unlike natural gas, LPG can be easily shipped and stored in cylinders — a perfect solution to keep the heating and hot water running in remote areas.

Are LPG boilers expensive to run?

LPG costs more than natural gas, so it is a bit more expensive to run a boiler on LPG.

That said, LPG still offers a cheaper means of operating your central heating system than oil when there’s no mains supply. What’s more, an oil boiler typically costs more to buy, install, and service than it LPG counterpart.

Can a gas boiler run on LPG?

In many cases, yes. Many modern gas boilers are sold with LPG conversion kits; these make it possible for a gas boiler to run on LPG.

What’s Next?

Got a question about LPG boiler prices, installation quotes you’ve received, or picking the right boiler for your property? Leave a comment below and we’ll get back to you as soon as possible.

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