The Navien NCB700 ON Review: Why Southwick Families Are Ditching Their Hot Water Tanks

The Navien NCB700 ON: It's Not a Boiler, It's a Hot Water Weapon for Your Southwick Castle!

By Andrew Tyler, Prime Boiler Care (The Horsham Heat Kings)

RIGHT! Gather 'round, you lovely people of Southwick. Today, we're not talking about your grandmother's leaky old central heating system. No, no, no. Today, we're talking about something so revolutionary, so downright clever, it makes those fancy electric cars look like tricycles. I'm talking about the Navien NCB700 ON Combi Boiler.

Now, if you're like most people, you probably think a combi boiler is just a combi boiler. A white box. Provides hot water. Keeps the frost from turning your pipes into icicles. Boring.

But the Navien? Oh, the Navien is different. It’s like discovering that your sensible, tweed-wearing uncle is secretly a Special Forces operative who can parallel park a tank.

The Problem: The "Combi Conundrum"

You see, the biggest problem with a standard combi boiler, however powerful it might be, is trying to do two things at once. Someone's in the shower, enjoying a blast of piping hot water, and then someone else turns on the kitchen tap to rinse a lettuce leaf. WHOOSH! The shower goes cold. Suddenly, you've got a shrieking banshee in the bathroom and a very confused person in the kitchen.

It's called the "combi conundrum," and it's plagued homes across West Sussex for decades. But the boffins at Navien, presumably fuelled by Korean BBQ and vast quantities of caffeine, have finally solved it.

The Solution: NaviCirc™ and the "ON" Tap

This isn't just a boiler, folks. It's a "Crossover" boiler. It’s the first of its kind, and it’s a stroke of genius. The Navien NCB700 ON delivers the hot water performance of a huge, clunky, unvented hot water cylinder – you know, those massive white tanks that hog half your loft or airing cupboard – but it does it all from a unit the size of a microwave.

How? With something called NaviCirc™. Essentially, it has a built-in mini hot water cylinder and an advanced pump that ensures you get instantaneous hot water. And because it keeps a small amount of water pre-heated and circulating, it's also incredibly efficient.

What does this mean for you, the good people of Southwick?

It means:

 * Multiple Showers, ZERO Drama: Two bathrooms, going full pelt, and the kitchen tap running? No problem. The Navien just shrugs and delivers.

 * Instant Hot Water: No more waiting for the water to heat up. You turn the tap, and it’s there. Like magic. Only it’s not magic; it’s brilliant engineering.

 * Space Saving: You get the performance of a hot water monster, without having to dedicate an entire room to its storage. More space for hobbies, or perhaps a rather large television.

The Engineering: Two Stainless Steel Heat Exchangers

Under its rather handsome, understated exterior, it boasts two stainless steel heat exchangers. Not one, like most of its rivals, but two. This means it's incredibly durable, ridiculously efficient, and built to last longer than a good argument about parking in Shoreham-by-Sea.

The Verdict

The Navien NCB700 ON is not just an upgrade; it's a leap forward. It’s for anyone in Southwick who's ever cursed a cold shower, or who simply demands the very best in home comfort without having to remodel their entire house. It’s powerful, it’s clever, and it genuinely solves a problem that no other combi has truly cracked.

The Prime Boiler Care Score: A resounding 10 out of 10. It’s simply in a league of its own.

Ready to turn your Southwick home into a hot water paradise? 

Don’t mess about with anything less. 

Call us at Prime Boiler Care in Horsham. We’ll bring this beauty down, install it with surgical precision, and make your old boiler look like a rusty garden gnome.