Navien launched its ON Combi Crossover boiler range late in 2022, the manufacturer has confirmed. The company described the launch as creating a new "Combi Crossover" category, and said the range has "redefined boundaries in boiler manufacturing" by offering home heating solutions that can service any sized home1.
The manufacturer states that the NCB700 ON, a gas condensing combi boiler in the range, is able to heat three showers at once with consistent and energy-efficient performance1. No efficiency figures, outputs for the wider range, prices or warranty terms are given in the announcement, and these have not been reported1.
Navien said the launch came as it marked 40 years of heating homes with energy-efficient and sustainable products, and that it was building on that experience to create what it called future-proofed heating solutions "for all eventualities at a time of uncertainty"1.
"Our range of ON Combi Crossover boilers has redefined boundaries in boiler manufacturing by offering home heating solutions that can service any sized home, with the NCB700 ON being able to heat three showers at once with consistent and energy-efficient performance."
The company also operates the Navien Choice programme, which rewards installers for every Navien installation. Installers who register online can exchange points for gadgets and technology from various brands1.
Why it matters for households
A combi boiler heats water on demand rather than storing it in a cylinder, so the number of outlets it can serve at once is a practical limit in a home with more than one bathroom. Navien's claim that the NCB700 ON can run three showers simultaneously speaks to that constraint, which is the usual reason a household is told a combi cannot cope and that a stored hot water system is needed instead. The wider range is presented as covering homes of any size, which is the point of the "Crossover" name: a combi positioned as an alternative where a system or conventional boiler would normally be specified1.
For a household weighing up combi boilers, the significance is in what is not stated. There are no published efficiency figures, flow rates or prices in the announcement, so the claim about three showers cannot be checked against a measured figure from this material1. Households comparing Navien boilers with other boiler manufacturers selling in the UK will find the range listed, but the detail needed to judge running costs has not been reported1.
What happens next
Navien said it would exhibit at InstallerSHOW 2023 from 27 to 29 June, at stand D30, to give what it called an exclusive first look at new technological innovations1. It said it would launch its first heat pump model at the show, along with new innovations including ON AI1. No dates, specifications or prices for the heat pump or ON AI have been reported1.
Sources1 cited
- Crossover to the future - Navien, navien.co.uk