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Ravenheat vs Potterton: A Boiler Comparison

Ravenheat vs Potterton

If you're looking for a more budget-friendly option to the boilers available from the leading manufacturers, Ravenheat and Potterton are two of the best options.

We've compared the Ravenheat HE and Potterton Assure ranges to help you find the best option for your home.

Meet Ravenheat and Potterton

Despite being a relatively young company having been founded in 1987, Ravenheat has quickly become a leading name when it comes to searching for affordable boilers that still deliver on performance.

Potterton are also a leading budget-friendly boiler brand but are backed up by the Baxi Group – a company which has built a strong reputation amongst heating engineers.

Ravenheat HE and Potterton Assure boilers

Ravenheat and Potterton both manufacture gas-fired combi and system boiler ranges while only Potterton offers regular boilers, which also run on gas.

Combi boilers

Combi boilers are the most popular boiler choice for homeowners in the UK and are installed into new build homes as standard.

They're the perfect heating system for homes with a single bathroom as they heat water from the mains supply instantly when there's demand for domestic hot water – rather than storing it in a cylinder.

Boiler Output Ratings Seasonal Space Heating Efficiency Rating Warranty
Ravenheat Combi Boilers
HE80 25 kW 95% 5 Years
HE98S 31 kW 92% 5 Years
HE30S Compact 31 kW 92% 10 Years
Potterton Combi Boilers
Potterton Assure 25 25 kW 93% 2 Years
Potterton Assure 30 30 kW 93% 2 Years
Potterton Assure 36 36 kW 93% 2 Years

Features of Ravenheat HE combi boilers include:

  • HE80 boilers have a backlit LCD display with easy-to-use controls to help you save energy
  • Able to reduce power usage to reduce energy costs
  • Compact dimensions
  • Densely insulated units
  • Extensive warranty periods

Potterton Assure combi boilers feature:

  • Operates quietly
  • Compact dimensions for a cupboard fit (min 290mm deep)
  • Installation is made easier by the low lift weight (29kg)
  • Fully compatible with Baxi uSense heating controls
  • Front access makes maintenance and servicing for a Gas Safe registered engineer much simpler
  • LPG is available on the 25 kW and 30 kW models
Combi Boiler Range Potential Cost (Minus Installation)
Ravenheat HE £750 – £1,000
Potterton Assure £620 – £1,350

System boilers

Ravenheat has a single system boiler in their HE range, the HE 98S, which has an output rating of 25 kW and extensive 5 year warranty. If a 25 kW output isn't suitable for the heating and hot water demands of your home, then you might want to turn to the Potterton Assure System range which includes outputs from 12 kW up to 30 kW.

Boiler Output Ratings Seasonal Space Heating Efficiency Rating Warranty
Ravenheat System Boilers
HE98S System 25 kW 92% 5 Years
Potterton System Boilers
Assure System 12 12 kW 93% 2 Years
Assure System 15 15 kW 93% 2 Years
Assure System 18 18 kW 93% 2 Years
Assure System 24 24 kW 93% 2 Years
Assure System 30 30 kW 93% 2 Years

With a Ravenheat HE98S System boiler, you can expect to benefit from:

  • Quiet in operation
  • Compact dimensions
  • Frost protection as standard
  • Can reduce power to 3.7 kW which helps to reduce the amount of energy being used

Key features of Potterton Assure System boilers include:

  • Can be installed into a standard kitchen cupboard – out of sight and mind
  • A low installation weight will help to keep installation costs down (28kg)
  • An outdoor weather sensor that adjusts heating based on the temperature outside is an optional extra
  • Can be installed as part of a heating system with a Megaflo Eco SystemReady hot water cylinder
System Boiler Range Potential Cost (Minus Installation)
Ravenheat HE £745 – £845
Potterton Assure £790 – £1,000

Regular boilers

If you live in a larger property and the existing pipework suits a heat-only system, when it comes to these manufacturers, Potterton is your only option. However, the Potterton Assure Heat boiler range offers plenty of choice to help you find a unit that will suit the heating and hot water demands of your home.

Boiler Output Ratings Seasonal Space Heating Efficiency Rating Warranty
Potterton Heat-Only Boilers
Assure Heat 13 12 kW 93% 2 Years
Assure Heat 16 16 kW 93% 2 Years
Assure Heat 19 19 kW 93% 2 Years
Assure Heat 25 25 kW 93% 2 Years
Assure System 30 30 kW 93% 2 Years

A regular boiler manufactured by Potterton is likely to cost between £850 and £1,350, with the higher output being the more expensive model. To put this into context, a regular boiler from leading manufacturer Worcester Bosch could cost up to £2,300.

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Ravenheat HE vs Potterton Assure


All of these boilers are highly efficient and can help to reduce your energy bills.

The Ravenheat HE80 can reach a seasonal space heating efficiency level of 95%, the highest of the models in this comparison. This means that for every £1 spent heating your home, only 5p is lost to waste gases – which all gas boilers produce and emit out of the home.

Potterton Assure boilers are fully modulating which means that they'll only use the amount of fuel needed to meet the demand for heating at any given time. They've even been endorsed by the Energy Saving Trust.

Heating controls

Ravenheat HE boilers are OpenTherm which means that when paired with a compatible thermostat you get more control over the central heating. With an OpenTherm system the exact amount of gas will be used to meet demand, which will help to greatly reduce energy waste.

As Potterton are part of Baxi, their Assure boilers are compatible with Baxi uSense which allows you to take control of your heating from your smartphone or tablet.


When it comes to price there isn't much to separate Ravenheat and Potterton. Both are budget-friendly options compared to the leading boiler brands but, on the whole, Ravenheat boiler prices tend to be lower than equivalent Potterton models.


In addition to the cost of the boiler, you will also need to hire a Gas Safe registered engineer to carry out the installation. Installers will all have their own rates but to aid installation and reduce the cost, both Ravenheat and Potterton have designed lightweight compact units.

When looking for boiler installation quotes, we highly recommend comparing more than one. With a single quote you wouldn't know if you're being over charged but with multiple quotes you can be confident of getting a competitive price.

By taking a few moments to complete our simple online form, you can get free quotes from up to 3 Gas Safe registered engineers based in your area.


Taking a look at the warranties offered by both manufacturers is an important part of any boiler comparison. A warranty normally lasts between 1-10 years and is there to protect you in the event of a fault.

Most Ravenheat warranties cover their boilers for between 2-5 years and will see that you're covered should there be an issue caused by the manufacturing process. However, the Ravenheat HE30S Compact combi boiler is covered by an extensive 10 year warranty – the longest available in this comparison. Potterton boilers are available with a 2 year warranty as standard and will cover the costs of parts and labour.

In any case, you will need to keep the warranty valid by having the boiler serviced by a Gas Safe registered engineer once a year.

Find out more about what’s covered by a Ravenheat Boiler Warranty and a Potterton Boiler Warranty.

Which brand takes the crown?

Compared with Ravenheat, Potterton has a more extensive range of gas-fired combi, system and regular boilers which would make finding the ideal unit for your home much easier.

As they're backed by Baxi, a leading boiler manufacturer, Potterton boilers house innovative technology to increase performance. For that reason, we're crowning them the winners of Ravenheat vs Potterton even though it might mean parting with a little more money.

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About the author


Adam is our lead content writer who spends most of his time researching and writing articles for the Boiler Guide website. You can rely on him to keep you up to date about the future of home heating.

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Excellent 4.7 out of 5

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