Navien boilers

Exclusively designed by BOXT, built by one of the world's largest boiler manufacturers. This powerful model has the performance and hot water flow rate to match Britain's best-selling boiler.

Comes with ESi Programmable Room Thermostat. A powerful, compact design that powers up to 16 radiators.

All Navien boilers sold by BOXT include a manufacturer-backed warranty, ranging from 5-10 years depending on the model. Navien boilers have an excellent reputation for being long-lasting and durable thanks to the careful craftsmanship and testing that goes into the manufacture of each one.

As always, if a boiler is serviced, its lifespan will be increased, so your new Navien boiler could last from 10 to 20 years (or potentially even longer!) before it needs to be replaced .

Navien boilers from BOXT

Our prices for a new Navien boiler start from just £1,790, which includes installation by a Gas Safe registered engineer.

To help you manage the cost of buying a new or replacement Navien boiler, we have finance packages available with repayment periods ranging from 12 to 120 months.

Fixed payments from just £33.35 a month for an all-inclusive plan to get:

• A brand new boiler
• Annual servicing by BOXT
• Unlimited boiler repairs
• Free boiler replacement
• No deposit
• No callout fees

We've got you covered if your Navien boiler needs a repair. For a fixed price of £89, a BOXT accredited engineer will come out to fix your Navien.

If it’s a bigger job requiring specific parts, we’ll give you a no obligation fixed price there & then to complete the job. Check out our price guide for boiler repairs, so you'll never be surprised.