🔥Cyber Monday: Get £200 off🔥
🔥Cyber Monday: Get £200 off🔥
🔥Cyber Monday: Get £200 off🔥
🔥Cyber Monday: Get £200 off🔥
🔥Cyber Monday: Get £200 off🔥
🔥Cyber Monday: Get £200 off🔥

Alpha E-Tec 20S System Gas Boiler

Rated A (93%) for energy efficiency

0% APR finance
Budget-friendly option

Fixed price install from


inc VAT

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Pay £35.82 for 36 months.

See your finance options.

Versatility & flexibility to suit a variety of homes

Alpha System E-Tec 20S Gas Boiler

Introducing the Alpha System E-Tec boiler, a remarkable heating solution designed to provide exceptional performance, energy efficiency, and reliability. Whether you have a large home or a property with high hot water demand, the Alpha System E-Tec boiler is the perfect choice for your heating needs. With power sizes available in 20S, 30S, and 35S, this system boiler offers versatility and flexibility to suit a variety of homes.

Padly's partnership with Alpha helps provide a heating solution that exceeds expectations and ensures your home is warm and comfortable all year round.

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Exclusive 10 year warranty

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Heats up to 15 radiators

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20 kW heat output

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W 440 x D 255 x H 712

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Hydrogen blend ready

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It's more than an install with Padly

What's included?

Boiler and pipework installation

Whether you’re getting a new improved system boiler or upgrading to a combi boiler, we appreciate that sometimes it’s necessary to have pipework alterations when a new boiler is installed. That’s why any pipework is included in the price of your installation.

Removal and disposal of your old boiler

At Padly we pride ourselves on ensuring our boiler installations are as easy and stress free as possible therefore, our engineers will ensure the removal and disposal of your old boiler is taken care of.

Removal of old tanks and pipework

If you’re looking to change from a system or heat-only boiler to a combination there will be no need for you to have a water tank in your attic freeing up space. Our installers remove old water tanks and boilers upon installation of your new system.

Chemical flush your system

After installing a brand-new boiler, we will complete a chemical flush, free of charge. Our engineers will complete a power flush designed to remove the sludgy build-up and grime that can accumulate in your central heating system over the years so you new boiler can work side by side with a clean central heating system.


Your new boiler installation will go hand in hand with a new thermostat. We will give you the choice of a standard replacement or upgrading to a smart thermostat to become compatible with smart home technology such as nest.


All our boilers come with a manufacturers warranty; however, the length of these warranties is dependent on the boiler you choose. For example, our Worcester Bosch Greenstar range comes with a warranty of up to 10 years.

Get installed from tomorrow

Boiler installation in 3 easy steps

Step 1

Select your brand new boiler and fill out our online quote form, whether your looking for a compact combi boiler or powerful system - we've got a range to suit all your homes needs.

Step 2

We’ll be in touch for a thorough survey of your property either remotely or on site, after which our experts will be in touch with a quote for installation.

Step 3

Choose a payment/ finance option and we'll book in a date for your engineer to install your brand-new boiler, remove the old boiler and show you how everything works.