Ideal Logic Max System Boiler-18KW

Ideal Logic Max System Boiler-18KW


Your fixed price includes the Boiler, Installation, and everything below.

  • Your new boiler, flue, and all installation fittings
  • Installation by a Gas Safe engineer
  • System cleaner and inhibitor
  • Magnetic system filter
  • Wireless EPH thermostat (combi boilers only)
  • Carbon Monoxide alarm
  • Gas Safe certificate and boiler warranty registration


The Ideal Logic² Max System boiler represents an advanced upgrade within the acclaimed Logic series. It boasts a larger, high-resolution colour display coupled with a sleek, contemporary design. This boiler is also equipped with an Ideal System Filter to enhance its durability and ensure consistent, reliable heating performance for your home.

Additionally, it is backed by a comprehensive 10-year warranty for added peace of mind. The system is also designed to be compatible with the Halo smart programmable thermostat range, offering enhanced control and efficiency with your Ideal boiler.



  • 10 year warranty*
  • Large high resolution colour screen
  • Compatible with the Halo smart programmable room thermostat range
  • Compact cupboard fit for a discrete install
  • Comes with an Ideal System Filter to maintain and protect your heating system
  • Sleek modern design
  • Quick and easy to install and service
  • Compatible with green heating technologies including solar thermal and hybrid systems


Ideal Logic Max System Boiler 18kW – FAQs

HeatNI supplies boilers and installation services across Northern Ireland. We’re on hand to answer any questions you might have. Check out our responses to common queries, or get in touch for further product information.

What Does the Halo Smart Programmable Room Thermostat Do?

The Halo smart programmable thermostat offers advanced control over your home heating system. It allows you to program and adjust your home’s heating schedule remotely, enhancing energy efficiency and convenience.

What Size Home Is the Ideal Logic System 18kW Suitable For?

The Ideal Logic System 18 boiler is typically suitable for medium-sized homes. Its 18kW output is designed to efficiently meet the heating and hot water needs of properties with several bedrooms and bathrooms.

I Need a Boiler With a Higher Level of Output

If you’re considering whether the 18 kW model will meet your requirements and you need a boiler with a higher output, it’s worth considering our 24 kW or 30 kW versions. These higher output models are designed to cater to larger spaces or homes with greater heating demands, ensuring efficient and adequate heating performance.

How Much Noise Does This Boiler Produce?

The Ideal Logic Max 18 kW boiler produces a sound level of 44 dB (decibels), which is not considered high in terms of noise levels for boilers. It’s relatively quiet, comparable and should not be intrusive or disruptive in a typical household setting.



Available in four different outputs of 15kW, 18kW, 24kW and 30kW.

Logic Max System² Models 15 18 24 30
Weight (Packaged) kg 31.3 31.3 31.3 31.3
Max Installation weight kg 27.3 27.3 27.3 27.3
CH Output(kW) min/max mean 70ºC 4.8-15.0 4.8-18.0 4.8-24.2 6.1-30.3
CH Output(kW) min/max mean 40ºC 5.1-15.9 5.1-19.1 5.1-25.6 6.4-31.0
SEDBUK rating (2005)% 91.2 91.1 91.2 91.1
SEDBUK rating (2009/2012)% 89.4 89.7 89.7 89.6
NOx Classification Class 6 Class 6 Class 6 Class 6
LPG conversion No Yes No Yes
Max Horizontal flue 9m 9m 9m 9m
Max Vertical Flue 7.7m 7.5m 7.5m 7.5m
Seasonal space heating efficiency class A A A A
Seasonal space heating energy efficiency µs % 93 93 94 93
Sound power level indoors LWA dB(A) 42 44 50 50


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