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Potterton Promax SL Heat Boilers

To purchase the Potterton Promax SL Heat Boiler, you will need to spend between £695.88 and £845.72 – which includes VAT and excludes installation.

Potterton Promax SL Heat Boilers

Designed to fit in a standard kitchen cupboard and tight areas of the home, the Potterton Promax SL Heat is a powerful heat only boiler that is suitable for properties with a traditional heating system.

This is because it must be installed with an expansion tank, as well as a separate cylinder to provide you with hot water. It measures 600mm (H) x 390mm (W) x 280mm (D) and is available in four heating outputs including 12kW, 15kW, 18kW and 24kW.

Offering you a choice of outputs, the Promax SL Heat is ideal for flats, small houses and medium-sized properties. It comes with a standard 2-year warranty and will cost between £695.88 and £845.72, and the price you must pay will depend on which boiler output you require.

Boiler Energy Efficiency Credentials

Boasting a SEDBUK band A efficiency rating, the Potterton Promax SL Heat is an Energy Saving Trust endorsed appliance that is up to 89.4% efficient. By being a fully modulating boiler, it can adjust its output to match your exact heating requirements, ensuring the boiler saves on fuel usage. This model is also compatible with Megaflo Eco Solar Cylinders, which help to reduce boiler running costs by harnessing the sun’s energy to provide you with plenty of hot water.

Promax SL Heat Technology and Main Advantages

The Potterton Promax SL Heat is an extremely compact and lightweight boiler that has a simple mounting plate and wall mounting jig to allow for quick and easy installation. Unlike most heat only boilers, this model doesn’t require a permanent live or pump overrun, which also helps to ensure a speedy and less disruptive installation.

As the boiler has front and side access to the components and no special tools are required for your engineer to carry out a standard service, servicing is quicker and easier too. It also comes with a flue that can be mounted vertically or horizontally up to 75 metres, thanks to Potterton’s Multifit flue options.

Is the Potterton Promax SL Heat the Right Boiler Type and Size for Your Home?

Like we mentioned above, this model is ideally suited to homes that already have a traditional heating and hot water system that works together with a hot water cylinder, cold storage tank and another separate tank that maintains the central heating water level. And as you may have guessed, the different outputs on offer will be suitable for different property sizes. For example, the 15kW version is best for flats and small properties, whereas the 24kW unit will cope well in a large bungalow or medium-sized house. However, as every home is unique, you must consult with a Gas Safe engineer to determine the right boiler output for your apartment, bungalow or house.

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MODELTYPE DIMENSIONSMAX FLOW RATOUTPUTEFFICIENCY TYPICAL PRICE
Potterton Promax Sl Heat 12HeatH - 600 mm
W - 390 mm
D - 280 mm
N/A 12 KW£ 695.88
Potterton Promax Sl Heat 15HeatH - 600 mm
W - 390 mm
D - 280 mm
N/A 15 KW£ 776.09
Potterton Promax Sl Heat 18HeatH - 600 mm
W - 390 mm
D - 280 mm
N/A 18 KW£ 803.58
Potterton Promax Sl Heat 24HeatH - 600 mm
W - 390 mm
D - 280 mm
N/A 24 KW£ 845.72

KEY FEATURES & BENEFITS

A-rated combi boiler Save money on your gas bill
NOx Class 5 – Best in classEnvironmentally friendly
No permanent live or pump overrun required Speedy and less disruptive installation
Simple mounting plateQuick and easy installation
Wall mounting jigSaves time and money on installation
Front and side access to components Servicing is easier and quicker
Flue lengths up to 75 metresSiting flexibility
Compatible with Megaflo Eco Solar Cylinders Greater fuel savings for hot water
2-year parts and labour warrantyConfidence and peace of mind

Our Honest Opinion of the Potterton Promax SL Heat

Since this model by Potterton is a heat only boiler (sometimes known as regular, conventional or traditional boiler), it is a good option for properties with an old-style radiator system and homes in areas where water pressure is low. It should also provide multiple bathrooms with enough hot water to meet household demand.

Although the Promax SL Heat is highly efficient as it comes, you can further reduce your carbon footprint and enjoy even lower energy costs with a Megaflo cylinder – which typically offers savings of around 60% of annual energy used for heating water.

The controls are a quite basic which is good news if you’re not keen on fancy knobs and dials, and the boiler can provide you with plenty of heating power. We should also mention that the Potterton Promax SL Heat is one of the most popular heat only boilers on the market, so that should give you some confidence about the quality and reliability of this appliance.

Advice on Boiler Quotes and Gas Safe Engineers

If you’re thinking about purchasing the Potterton Promax SL Heat Boiler, make sure you shop around to get the best deal and always ask for a fixed price on the boiler and installation to avoid any hidden fees. You must also ensure your chosen installer/company is Gas Safe registered to give you peace of mind that they are legally allowed to install your new gas boiler. It’s easy to find out this information – simply ask to view the installer’s ID card or check the official list of registered engineers and businesses at the Gas Safe Register website.

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