Ideal for homes with
1 Bathroom
Ideal for homes with
1-3 Bedrooms
The Potterton Promax Combi has been designed with a wide range of features and options to make it a extremely reliable boiler.
The Potterton Promax Combi provides Potterton reliability and British manufacturing excellence – meaning you’ll never be without piping hot water.
The Potterton Promax Combi is available in three models (the 24kW, 28kW and 33kW) providing a suitable option for small and medium sized homes.
The Promax Combi Boiler is also fully modulating, meaning it will intelligently adjust to use the correct amount of fuel to meet current demands to save on usage.
The Potterton Promax Combi comes with a standard 2 year warranty for extra peace of mind.
Other features include: Easy to use controls, Compatible with Multifit GasSaver which can save up to 37% on gas for DHW.
Please select a boiler model below to view its specifications.
Fuel | Gas |
Model | 24kW |
MPN | 7219453 |
Condensing | Condensing |
Efficiency Rating | 89% |
ERP | A HEAT A WATER |
LPG Version | No |
Solar Compatible | No |
Standard Warranty | 2 Years |
Central Heating Max Output | 21kW |
Flow Rate | 9.8 l/min |
Mounting | Wall |
Dimensions | H 780 x W 450 x D 345 |
Typical Price (inc VAT) | £930 |
Typical Installation Price (inc VAT) | £500 - £1000 |
Sundries (Filter, Flue, etc) | £300 |
Total Cost | £1730 - £2230 |
Fuel | Gas |
Model | 28kW |
MPN | 7219455 |
Condensing | Condensing |
Efficiency Rating | 89% |
ERP | A HEAT A WATER |
LPG Version | No |
Solar Compatible | No |
Standard Warranty | 2 Years |
Central Heating Max Output | 25.9kW |
Flow Rate | 11.5 l/min |
Mounting | Wall |
Dimensions | H 780 x W 450 x D 345 |
Typical Price (inc VAT) | £1,300 |
Typical Installation Price (inc VAT) | £500 - £1000 |
Sundries (Filter, Flue, etc) | £300 |
Total Cost | £2100 - £2600 |
Fuel | Gas |
Model | 33kW |
MPN | 7219456 |
Condensing | Condensing |
Efficiency Rating | 88.9% |
ERP | A HEAT A WATER |
LPG Version | No |
Solar Compatible | No |
Standard Warranty | 2 Years |
Central Heating Max Output | 30.3kW |
Flow Rate | 13.5 l/min |
Mounting | Wall |
Dimensions | H 780 x W 450 x D 345 |
Typical Price (inc VAT) | £1,470 |
Typical Installation Price (inc VAT) | £500 - £1000 |
Sundries (Filter, Flue, etc) | £300 |
Total Cost | £2270 - £2770 |
Below are the latest combi boilers available from Potterton.
Prices listed are for standard models and should be used as a 'guide price'. We are not able to show every possible retailer and cheaper prices may be available.
Prices are ordered from lowest to highest, irrespective of retailer rating or stock. We are not able to show every possible retailer and cheaper prices may be available. When you click on a retailer link on our site, we may earn affiliate commission. This supports our not-for-profit mission to empower consumers and in no way affects our recommendations. Find out more.
Our partners will be calling you shortly for a friendly chat to confirm your requirements and to arrange for up to four quotes to be sent to you to compare (which could help you save up to 50% off your new Combi Boiler and installation), please expect their call/email (sent to ).
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As a preference you can now request video quotes from our network of heating engineers.
We’re here to connect you with local heating engineers through the Covid-19 pandemic.
As the nation practices social distancing, our boilers are more important than ever, and we’re following the latest government advice to ensure you don’t go without heating or hot water.
Yes – you can still get quotes from local heating engineers.
Remote quotes are possible in most cases but this will depend on the work involved. Your installer will be able to discuss quote options with you over the phone.
Yes – heating engineers are key workers so can continue working in people’s homes as long as they are in good health and don’t have any Coronavirus symptoms.
Our engineers can provide you with a quote over the phone or via a video call, and will discuss these options with you so you can find a solution you are comfortable with.
Yes – by maintaining the social distancing guidelines, a tradesperson will be able to safely carry out work in your home.
We’re closely following advice from the Government and Public Health England and will make appropriate changes where necessary.
Thank you for using Combi Boiler Prices and remember to stay safe,
The Combi Boiler Prices Team.