Our thoughts
The Navien NCB range is easy to install and offers a generous warranty period. It is also low polluting due to its high energy efficiency rating and is easy to control via the intuitive control panel display.
The two models span 5 power outputs for great flexibility. These boilers can generally provide adequate hot water for most average-sized family homes. But beware, like all boilers, it may be restricted by the incoming cold water feed flow rate. It will never be able to heat more water than is coming in.
The latest technology
You can use the Navien NCB via the conventional programmable control panel or thermostat. But the options don’t stop there. You can upgrade to a smart energy system, which can improve the energy efficiency of the boiler even further. This model is compatible with smart thermostat brands such as Nest and Tado. Navien also have their own Smart Plus Controller for perfect integration.
Engineering excellence
The Navien NCB range uses stainless steel heat exchangers. This prevents corrosion and reduces the risk of problems arising during the boilers’ lifespan.
Frost protection
A built-in sensor inside the boiler automatically detects the ambient temperature. It will start a safety heating cycle to prevent damage to internal equipment due to freezing temperatures.
Summary
We like Navien. They offer great service and products. Their gas boiler offering is impressive but quite expensive at the minute. The price may come down over time, but as it stands, we currently recommend Viessmann boilers for homes with natural gas or LPG. We do recommend Navien for oil boiler installations.
