• Get the best quotes, fast!
  • Over 5,000 engineers across the UK
  • Gas Safe registered engineers
Need a new boiler? Get FREE no-obligation quotes now!
Get FREE no-obligation quotes now!
  • No delays! Get quotes today
  • Compare quotes & get the best prices
  • Gas Safe & OFTEC registered engineers
The smarter way to find approved boiler engineers
Excellent 4.7 out of 5
Excellent 4.7 out of 5

Filter boilers

Fuel type

Boiler type

Manufacturer

Navien LCB700 21kW External Combi Oil Boiler

Navien LCB700 21kW External Combi Oil Boiler Boiler
Typical Price (inc VAT)
£N/A
Typical installation Cost (inc VAT)*
£500 - £1,000

Get a quote to install this boiler

Need a repair instead? Get a repair quote
Make Navien
Model LCB700 21kW External Combi Oil Boiler
Is Condensing Condensing
Efficiency Rating 93%
Standard Warranty 10 Years
Band Rating A Rating
ERP Rating A Heat A Water
Central Heating Max. Output 23 kW
Flow Rate 14 l/min
LPG Compatible No
Mounting Floor Standing
Typical Price (inc VAT) £N/A
Typical installation Cost (inc VAT)* £500 - £1,000

Get a quote to install this boiler

Need a repair instead? Get a repair quote
LCB700 21kW External Combi Oil Boiler

The Navien LCB700 21 kW External is a condensing combi oil boiler designed for outdoor installation.

How efficient is the Navien LCB700?

Navien LCB700 boilers are highly efficient condensing boilers as shown by the ErP A-rating and 93% efficiency.

Is the output rating suitable for my home?

A combi boiler with a central heating output rating of 21 kW is best suited to homes with fewer than 10 radiators. Properties with 10 radiators or more will need a higher output.

Are other outputs available in the LCB700 range?

If you need a more powerful output then the LCB700 range also includes combi boilers with outputs of 28 kW and 36 kW. LCB700 combi boilers are also available for internal installation.

Should the hot water demands of your home be too large for a combi to meet, then Navien also manufactures oil system and regular boilers.

Is a combi boiler suitable for my home?

Combi boilers are compact heating systems that don’t need to be installed alongside any additional tanks or cylinders - other than an oil storage tank. Great news for properties with limited space and you also don’t have to wait for the cylinder to fill with hot water. However, if you live in a property with multiple bathrooms, a combi is unlikely to be suitable. In that case, it’s recommended to have a system or regular boiler installed.

How long is the warranty period?

Navien LCB700 boilers are available with a lengthy 10 year warranty that will see you’re well covered long after the installation.

What are the key features of the Navien LCB700?

The key feature of the Navien LCB700 range is that they’ve been designed for installation outside of a property. This will help to free up space in your property that you would lose with an internal model.

In terms of operation, LCB700 boilers have blue flame technology to increase efficiency and reduce NOx emissions. A quick domestic hot water supply function means that you won’t be waiting long for hot water, a smart control panel displays how much oil is being used and a stainless steel heat exchanger helps to increase the expected boiler life.

How big is the Navien LCB700 21 kW External?

Thanks to compact dimensions of 650 x 673 x 900mm (HxWxD), the Navien LCB700 External won’t take up too much space in your garden area.

Get quotes to supply and fit a new

* This is a guide price for a straightforward, like-for-like boiler replacement. Installation costs will vary dependent on work required.

Write a review

Navien LCB700 21kW External Combi Oil Boiler Boiler

You are reviewing:

Navien LCB700 21kW External Combi Oil Boiler
Back to Navien LCB700 21kW External Combi Oil Boiler
Why not compare these similar boilers?
Boiler Model kW Efficiency Warranty Typical Price
Navien NCB 24kW Combi Gas Boiler 24kw 92% 7 years £N/A VIEW
Navien NCB 28kW Combi Gas Boiler 28kw 93% 7 years £N/A VIEW
Navien NCB 34kW Combi Gas Boiler 34kw 93% 7 years £N/A VIEW
Navien NCB 40kW Combi Gas Boiler 40kw 93% 7 years £N/A VIEW
Navien NCB 20kW System Gas Boiler 20kw 92% 7 years £N/A VIEW
Navien NCB 23kW System Gas Boiler 23kw 93% 7 years £N/A VIEW
Navien NCB 28kW System Gas Boiler 28kw 93% 7 years £N/A VIEW
Navien NCB 33kW System Gas Boiler 33kw 93% 7 years £N/A VIEW
Navien LCB700 21kW Internal System Oil Boiler 21kw 93% 10 years £N/A VIEW
Navien LCB700 28kW Internal System Oil Boiler 28kw 93% 10 years £N/A VIEW
Navien LCB700 36kW Internal System Oil Boiler 36kw 93% 10 years £N/A VIEW
Navien LCB700 21kW Internal Regular Oil Boiler 21kw 93% 10 years £N/A VIEW
Navien LCB700 28kW Internal Regular Oil Boiler 28kw 93% 10 years £N/A VIEW
Navien LCB700 36kW Internal Regular Oil Boiler 36kw 93% 10 years £N/A VIEW
Navien LCB700 21kW External System Oil Boiler 21kw 93% 10 years £N/A VIEW
Navien LCB700 28kW External System Oil Boiler 28kw 93% 10 years £N/A VIEW
Navien LCB700 36kW External System Oil Boiler 36kw 93% 10 years £N/A VIEW
Navien LCB700 21kW External Regular Oil Boiler 21kw 93% 10 years £N/A VIEW
Navien LCB700 28kW External Regular Oil Boiler 28kw 93% 10 years £N/A VIEW
Navien LCB700 36kW External Regular Oil Boiler 36kw 93% 10 years £N/A VIEW
Navien LCB700 21kW Internal Combi Oil Boiler 23 kw 93% 10 years £N/A VIEW
Navien LCB700 28kW Internal Combi Oil Boiler 30.3 kw 93% 10 years £N/A VIEW
Navien LCB700 36kW Internal Combi Oil Boiler 39 kw 93% 10 years £N/A VIEW
Navien LCB700 21kW External Combi Oil Boiler 23 kw 93% 10 years £N/A VIEW
Navien LCB700 28kW External Combi Oil Boiler 30.3 kw 93% 10 years £N/A VIEW
Navien LCB700 36kW External Combi Oil Boiler 39 kw 93% 10 years £N/A VIEW

Need a new boiler?

Get FREE no-obligation quotes now!

Excellent 4.7 out of 5
Excellent 4.7 out of 5

Filter boilers

Fuel type

Boiler type

Manufacturer

FILTER
COMPARE