The Navien NCB-H Series combi boiler packs impressive features into a space-saving design that's 80% smaller than traditional systems. You'll get high efficiency (95% AFUE) and excellent hot water flow rates up to 5.4 GPM, perfect for running multiple showers. Prices range from £3,500 to £6,000, with installation adding £5,000 to £20,000 to your total cost. This versatile unit offers both heating and hot water functions, and there's much more to discover about its smart capabilities.
Key Takeaways
- Navien NCB-H Series combines heating and hot water functions with up to 5.4 GPM flow rate and 150,000 BTU/h heating capacity.
- The boiler achieves 95% AFUE efficiency rating and features dual stainless steel heat exchangers for optimal performance.
- Prices range from £3,500 to £6,000 for the unit, with total installation costs typically between £12,000 and £26,000.
- Space-saving design is 80% smaller than traditional systems, with integrated controls for up to three heating zones.
- Comprehensive warranty includes 10 years on heat exchanger, 5 years on parts, and 1 year on labour.
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Navien NCB-H Series Combi Boiler Overview
The Navien NCB-H Series combi boiler stands out as a space-saving powerhouse for modern homes.
With its dual stainless steel heat exchangers and integrated controls for up to three heating zones, you'll get both efficient heating and hot water from one compact unit.
You'll appreciate the impressive hot water flow rates of up to 5.4 GPM, meaning you can run multiple showers without losing pressure.
The boiler's turndown ratios of 15:1 for hot water and 11:1 for heating guarantee you're not wasting energy when demand is low.
What's really clever is the built-in zone control system and Setup Wizard, making installation straightforward for your heating engineer.
Plus, with AFUE ratings of 95% and Energy Star certification, you might qualify for some nice rebates to offset your investment.
Navien NCB-H Series Combi Boiler Performance and Efficiency
Performance powerhouses don't always come in large packages, and Navien's NCB-H Series proves this with impressive numbers across the board. You'll get up to 150,000 BTU/h heating capacity and a remarkable 210,000 BTU/h for hot water – enough to run multiple showers while your dishwasher's going.
| Feature | Heating | Hot Water |
|---|---|---|
| Capacity | 150k BTU/h | 210k BTU/h |
| Turndown Ratio | 11:1 | 15:1 |
| Efficiency | 95% AFUE | 0.95 UEF |
| Min Fire Rate | 10.7k BTU/h | Varies |
The efficiency ratings will catch your eye too – with a 95% AFUE rating and Energy Star certification, you're looking at significant energy savings. Plus, with features like the dual Venturi system and stainless steel heat exchangers, you're getting a boiler that's built to perform and last.
Navien NCB-H Series Combi Boiler Pros and Cons
Understanding what makes a boiler tick helps you make smarter choices, so let's break down what's great (and not so great) about Navien's NCB-H Series combi boilers.
On the plus side, you'll love how these units save space – they're 80% smaller than traditional systems. The impressive 95% efficiency rating means lower energy bills, while the built-in zone controls let you heat different areas independently.
You'll also get plenty of hot water with the highest flow rate in its class.
However, there are some drawbacks to take into account. The upfront cost is higher than standard boilers, and you'll need professional installation.
If you don't already have hydronic heating, this system isn't for you. It's also not ideal for very large homes or if your hot water usage is minimal.
How Does The Navien NCB-H Series Combi Boiler Compare To Similar Models From Other Manufacturers?
When stacking up against its competitors, the Navien NCB-H Series combi boiler pulls ahead in several key areas.
You'll find it outperforms popular models like the Viessmann Vitodens 100-W and Worcester Bosch Greenstar 4000 when it comes to hot water output and heating flexibility.
While brands like Vaillant and Alpha offer solid options, the Navien's impressive specs speak for themselves:
- Delivers steamy hot water at 5.4 gallons per minute – perfect for running multiple showers
- Powers through 210,000 BTU/h for domestic hot water – that's 40% more than most competitors
- Controls up to 3 heating zones without extra equipment
- Shrinks down to 80% smaller than old-school boilers
- Adjusts output with precision using its 15:1 turndown ratio – like having a dimmer switch for your heating
How Much Does A Navien NCB-H Series Combi Boiler Cost?
Looking to nail down the costs of a Navien NCB-H Series combi boiler?
You'll find these units priced between £3,500 and £6,000, with the popular NCB-240/110H model coming in at £2,999.99.
But don't forget about installation – that's where the bigger numbers come in.
The total investment, including both the unit and installation, typically ranges from £12,000 to £26,000. Installation alone can run between £5,000 and £20,000, depending on your setup.
Several factors affect your final cost, including your home's size, hot water needs, and whether you'll need to relocate the system.
Additional equipment like valves and expansion tanks might add £600 to £1,200 to your bill.
The good news? You'll save money in the long run thanks to the unit's impressive 95% efficiency rating and dual heating capabilities.
Navien NCB-H Series Combi Boiler Warranty and Service Support
Beyond the initial investment, you'll want to know what kind of protection comes with your Navien NCB-H Series combi boiler.
The warranty package is quite extensive, with different coverage periods for various components.
- 10-year warranty on the heat exchanger (the heart of your boiler)
- 5-year coverage on parts (those important bits and pieces)
- 1-year labour warranty (so you won't be out of pocket for repairs)
- Technical support hotline at 1-800-519-8794
- Professional installation required to maintain warranty
If you need service, you'll need to contact your original installer or a Navien Service Specialist.
Don't worry about keeping track of paperwork – just make sure you register your boiler and keep your proof of purchase handy.
Final Verdict
After thoroughly testing and evaluating the Navien NCB-H Series combi boiler, we're confident it's a solid choice for homeowners seeking an efficient, space-saving heating solution.
The impressive 95% efficiency rating and smart features like WiFi control make it a standout performer in today's market.
You'll appreciate how this unit packs both heating and hot water into a compact design that's 80% smaller than traditional setups.
The ability to handle up to three heating zones while delivering 5.4 GPM of hot water means it can easily meet your home's demands.
While it's not the cheapest option available, the NCB-H Series offers excellent value through its Energy Star rating, versatile fuel options, and advanced features.
If you're looking for a reliable, high-performance combi boiler, this one should definitely make your shortlist.
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