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🔥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🔥

Navien NCB300 Combi

Available in 28, 37, 41 kW

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Manufacturers 5 year warranty

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Hydrogen blend ready

Fixed price install from


inc VAT

Latest gas condensing boiler technology

Introducing the Navien NCB300 gas condensing combi boiler, a compact yet powerful solution for smaller properties. Despite its size, it delivers exceptional reliability and hot water performance. With smart features, including smartphone compatibility for remote control and energy-saving weather forecasting, it maximizes efficiency and reduces energy bills. Built with stainless steel heat exchangers, it ensures durability and future-proofing as it is hydrogen-ready.

The NCB300 comes with a 5-year warranty, extended venting capabilities, and an ErP A+ energy efficiency rating for low running costs. Trust Padly for your boiler installation needs and experience the difference with the Navien NCB300. Contact us today for more information.

Experience the Game-Changing Benefits of the Navien NCB300

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Smart weather forecasting and geofencing

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Extendable venting up to 8 meters

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Remote smartphone heating adjustment controls

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Ultra-low running costs with Smart Plus controls

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Guaranteed long-term efficiency and durability

What's the specifics?

W 395 x D 285 x H 680
Warranty Length
Manufacturers 5 year warranty
Boiler Type
Efficiency Rate
Rated A (93%) for energy efficiency
Fuel Type
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.