The Navien NCB700 ON combi boiler delivers impressive hot water flow rates of 22.1 l/min, enough to handle three bathrooms at once. You'll get excellent efficiency with its A+ energy rating and 15:1 turndown ratio, while the hydrogen-ready design future-proofs your investment. Prices start at £1,409.81 before VAT, with total installation costs ranging from £2,400-£3,500. The 12-year warranty provides peace of mind, though you'll want to understand all the features before making your decision.
Key Takeaways
- The Navien NCB700 ON costs between £2,400-£3,500 installed, with base unit prices starting at £1,409.81 before VAT.
- This A-rated combi boiler delivers powerful 54kW output with 22.1 l/min flow rate, serving three bathrooms simultaneously.
- Installation requires Gas Safe registered professionals, with comprehensive installation quotes ranging from £12,000-£26,000.
- The boiler includes hydrogen-ready technology, built-in recirculation pump, and Smart Plus control for energy monitoring.
- Warranty coverage includes 5 years on parts, 10 years on heat exchanger, and 1 year on labour.
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Navien NCB700 ON Combi Boiler Overview
The Navien NCB700 ON combi boiler stands out as a powerhouse in home heating, thanks to its remarkable ability to supply hot water to three bathrooms at once.
With its impressive 54kW output delivering up to 22.1 l/min, you'll never have to yell "Who's using all the hot water?" during morning rushes again.
You'll appreciate how this A-rated boiler keeps your energy bills in check with its industry-leading 15:1 turndown ratio.
The built-in recirculation pump means you won't have to wait around for hot water to reach your taps.
Looking to future-proof your home? This boiler's got you covered with its hydrogen-ready technology.
Plus, with a generous 12-year warranty and IPX4 water protection rating, you can rest easy knowing your investment is well protected.
Navien NCB700 ON Combi Boiler Performance and Efficiency
Dropping impressive performance numbers is one thing, but let's look at what they mean for your daily life with the Navien NCB700 ON.
With a flow rate of 22 litres per minute, you'll never have to yell "Stop running the dishwasher, I'm trying to shower!" The boiler easily handles three bathrooms running simultaneously, while its built-in recirculation pump means no more waiting for hot water to reach distant taps.
| Feature | Benefit |
|---|---|
| ErP A+ Rating | Lower energy bills |
| 15:1 Turndown | Matches your exact needs |
| H2-Ready | Future-proof investment |
| 12-Year Warranty | Peace of mind |
You'll appreciate the stainless steel heat exchanger and condensing technology that squeeze maximum efficiency from every drop of fuel. Plus, the Smart Plus control lets you monitor energy usage right from the digital display.
Navien NCB700 ON Combi Boiler Pros and Cons
Just like weighing the benefits of a new car, evaluating the Navien NCB700 ON's strengths and limitations helps you make an informed decision for your home heating needs.
You'll find impressive advantages like its powerful 54kW output and industry-leading efficiency, but there are also some factors to keep in mind.
- The good stuff: You're getting a hydrogen-ready boiler with a 12-year warranty and built-in hot water recirculation – pretty much future-proofing your investment.
- Space-saving perks: Its wall-mounted design frees up valuable floor space, while the IPX4 rating keeps it safe from splashes.
- Trade-offs to weigh: You'll need to factor in a higher upfront cost and annual servicing requirements, plus it might take some time to master all those fancy features.
How Does The Navien NCB700 ON Combi Boiler Compare To Similar Models From Other Manufacturers?
When comparing boiler models, it's like shopping for smartphones – you want to see how the features stack up against the competition before making your choice.
The Navien NCB700 ON stands out with its impressive 54kW output and 22 litres per minute flow rate, outperforming competitors like the Vaillant ecoTEC exclusive's 20 litres per minute.
You'll find it can handle three bathrooms simultaneously, which is quite a feat for a combi boiler.
While Viessmann and Vaillant offer excellent German engineering, and Worcester Bosch brings trusted reliability, the Navien's unique NaviCirc™ technology and built-in DHW recirculation pump give it an edge.
Even budget-friendly brands like Alpha can't match these features.
The 12-year warranty and ErP A+ rating with Smart Plus controller put it firmly at the top of its class.
Our popular boiler comparisons can help you explore more options and features across different manufacturers.
How Much Does A Navien NCB700 ON Combi Boiler Cost?
Let's talk numbers – the Navien NCB700 ON combi boiler isn't exactly pocket change, with unit prices starting at £1,409.81 before VAT.
When you factor in installation, you're looking at a total investment between £2,400 and £3,500, though this can vary based on your specific needs.
Your final cost will depend on several key factors:
- Your home's size and heating demands
- The number of bathrooms and fixtures you're serving
- Your location (with London and Southeast England typically commanding higher prices)
Don't forget to account for potential extras like the flue and smart kit, which can add another £322.80 to your bill.
While it might seem steep, remember you're investing in a high-end system that'll keep your home cosy for years to come.
Navien NCB700 ON Combi Boiler Warranty and Service Support
The Navien NCB700 ON comes with an extensive warranty package that'll give you peace of mind for years to come.
You'll get 5 years coverage on parts, 1 year on labour, and a generous 10-year warranty on the heat exchanger.
To keep your warranty valid, you'll need to schedule annual service with a competent engineer. It's like taking your car for its yearly MOT – it keeps everything running smoothly and safely.
If you ever need support, you've got plenty of options. You can contact Navien's technical team at 0844 332 2323 or reach out to your original installer.
They offer support 363 days per year, so you're covered even during most holidays.
Just remember to keep your proof of purchase and installation details handy when making warranty claims.
Final Verdict
After thoroughly evaluating the Navien NCB700 ON combi boiler, we're confident in calling it a premium powerhouse that's worth the investment for larger homes.
While it's not the cheapest option on the market, you're getting exceptional value for your money.
The standout features that make this boiler worth considering include:
- Impressive hot water output that can handle three bathrooms at once
- Future-proof technology with hydrogen-ready capabilities
- Advanced features like NaviCirc™ and built-in energy usage monitoring
You'll appreciate the boiler's high efficiency rating and substantial turndown ratio, which means lower energy bills in the long run.
The stainless steel heat exchangers and IPX4 rating also guarantee you're getting a durable, reliable system that'll serve your home for years to come.
Get Up To 3 Free Quotes For Your New Boiler
Making a smart investment in your new Navien NCB700 ON starts with gathering multiple installation quotes from qualified professionals.
You'll want to guarantee you're getting the best value while maintaining high installation standards.
Using our free quote comparison service, you can quickly connect with up to three local Gas Safe registered engineers in your area.
Simply provide details about your property size, current heating setup, and when you'd like the installation completed.
When reviewing quotes, pay attention to the breakdown of costs, including parts, labour, and any additional work required.
Don't forget to verify each installer's credentials and check what warranties they're offering with the installation.
Getting multiple quotes helps you avoid overpaying while guaranteeing your new Navien boiler is installed correctly by qualified professionals.
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