The Navien LCB700 Internal Combi Oil Boiler combines impressive efficiency with modern features. You'll get a compact unit that's 93% efficient, with outputs ranging from 21kW to 36kW to suit different home sizes. Prices start at £1,510 for the base unit, with total installation costs around £2,611 for the 21kW model. With its 10-year warranty and ultra-low emissions, it's a solid investment – though you'll want to explore how its smart features can maximise your savings.
Key Takeaways
- The Navien LCB700 boiler costs between £1,510-£1,650 for the unit alone, with total installation costs reaching approximately £2,611.
- Features Blue Flame technology and achieves 93% seasonal heating efficiency, making it highly energy-efficient with ultra-low emissions.
- Available in three output options (21kW, 28kW, 36kW) with hot water flow rates up to 20 l/min on the largest model.
- Comes with a comprehensive 10-year warranty covering parts and labour, requiring regular maintenance to maintain coverage.
- Compact dimensions of 600 x 600 x 860mm make it suitable for various installation locations with flexible flue options up to 21m.
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Navien LCB700 Internal Combi Oil Boiler Overview
The Navien LCB700 Internal Combi Oil Boiler represents a breakthrough in home heating technology, combining efficiency with user-friendly features.
You'll find this floor-standing unit packs impressive performance into its compact 600 x 600 x 860mm frame.
What sets this boiler apart is its cutting-edge technology and future-ready design. It's equipped with Blue Flame technology for superior efficiency and an easy-to-use text display that helps you monitor your fuel consumption.
Here's what makes the LCB700 stand out:
- Stainless steel heat exchanger for long-lasting performance
- Available in three outputs: 21kW, 28kW, and 36kW
- Compatible with HVO fuel for eco-friendly operation
- Up to 21m flue length for flexible installation
- A-rated efficiency that jumps to A+ with Smart Plus thermostats
You'll appreciate the 10-year warranty that comes standard, giving you peace of mind for years to come.
Navien LCB700 Internal Combi Oil Boiler Performance and Efficiency
Performance powerhouse would be an apt description for the Navien LCB700, achieving an impressive 93% seasonal space heating efficiency rating. With its Blue Flame technology and stainless steel heat exchanger, you'll enjoy peak performance while keeping those energy bills in check.
| Feature | Benefit |
|---|---|
| A-rated efficiency | Lower running costs |
| Blue Flame technology | Reduced emissions |
| Smart Plus compatibility | Enhanced control |
You'll appreciate the boiler's modulating output that precisely controls temperature, while its rapid heat-up time means you won't be shivering while waiting for warmth. The unit delivers impressive hot water flow rates up to 20 l/min on the 36kW model – perfect for running multiple taps simultaneously. With its advanced fuel consumption monitoring, you're always in control of your energy usage.
Navien LCB700 Internal Combi Oil Boiler Pros and Cons
Building on what we've learned about its impressive performance, let's weigh the key advantages and drawbacks of the Navien LCB700.
On the plus side, you'll benefit from exceptional 93% efficiency and cutting-edge Blue Flame technology that keeps emissions ultra-low. The lightweight 67kg design makes installation a breeze, and you're covered by a reassuring 10-year warranty.
Here are the standout advantages you'll get:
- High-efficiency rating saves on energy bills
- Ultra-low NOx emissions for environmental friendliness
- Flexible flue options up to 21m
- HVO compatibility for future-proofing
- Smart Plus control compatibility for A+ rating
However, it's worth noting some drawbacks. You'll face a higher upfront cost compared to standard boilers, and you'll need annual maintenance to keep the warranty valid.
The condensate drain requirement might also be a consideration in colder areas.
How Does The Navien LCB700 Internal Combi Oil Boiler Compare To Similar Models From Other Manufacturers?
When comparing the Navien LCB700 to its main competitors, you'll find it stands out in several key areas.
Its 93% efficiency rating matches industry leaders like the Grant Vortex Pro and Firebird Enviromax, while outperforming the Worcester Bosch Greenstar Heatslave II's 90.1%.
The LCB700's 10-year standard warranty is particularly impressive, as competitors typically offer just 5 years unless you pay for extensions.
You'll also get better hot water flow rates, with the 28kW model delivering 18 l/min compared to the competition's 15 l/min.
Where installation flexibility matters, the LCB700's 21m flue length gives you more options than its rivals.
Plus, it's ready for future-proof HVO fuel compatibility – something that'll come in handy as we move towards greener heating solutions.
How Much Does A Navien LCB700 Internal Combi Oil Boiler Cost?
Looking to invest in a Navien LCB700 internal combi oil boiler? The base unit costs between £1,510 and £1,650, depending on which power output you choose.
When you factor in installation and extras, you're looking at around £2,611 for a complete setup with the 21kW model.
Here's what you'll need to budget for:
- Base boiler unit: £1,510 – £1,650
- Installation costs: £1,000 – £1,500
- Essential extras (filter, flue): Around £300
- Smart controls (optional): Additional cost
- Seasonal price variations may apply
The good news? The boiler's 93% efficiency rating means you'll keep saving on energy bills long after installation.
Navien LCB700 Internal Combi Oil Boiler Warranty and Service Support
The Navien LCB700 internal combi oil boiler comes with an impressive 10-year warranty that'll give you peace of mind long after installation. This extensive coverage includes both parts and labour for any defects in materials and workmanship.
You'll need to keep a few things in mind to maintain your warranty. Make sure you get your boiler installed by an authorised professional and keep up with regular maintenance. The warranty won't cover issues from things like hard water damage or unauthorised modifications.
If you ever need help, Navien's got your back with excellent service support. Their technicians are available seven days a week, nearly year-round, from 5 AM to 9 PM PT on weekdays.
Just remember to register your warranty either online through the Navien Warranty app or by calling 0344 332 2323.
Final Verdict
Based on our thorough analysis, you'll find the Navien LCB700 internal combi oil boiler to be a standout choice for modern homes. Its impressive 93% efficiency rating and smart control features make it an excellent investment for energy-conscious homeowners.
The boiler's key strengths include:
- 10-year warranty protection for peace of mind
- Compact design that fits under standard kitchen worktops
- Blue flame technology for cleaner, more efficient operation
- Compatible with smart controls for enhanced efficiency
- Multiple output options to suit different property sizes
You'll appreciate the user-friendly text display and the potential for significant energy bill savings.
While it's not the cheapest option upfront, the combination of high efficiency, advanced features, and long warranty coverage makes this boiler a worthy long-term investment for your home.
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