Ideal Logic² Max Heat – 18KW

Ideal Logic² Max Heat – 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

* Vertical flue or any other flue attachments added as extras at checkout


Building upon the legacy of our award-winning Ideal Logic range, the Logic² Max Heat elevates your home heating experience.

  • Crystal-clear control: A high-resolution colour screen puts intuitive control at your fingertips.
  • Sleek and sophisticated design: The Logic² Max Heat boasts a modern aesthetic that complements any home décor.
  • Built to last: The Ideal System Filter safeguards your boiler, extending its lifespan and ensuring reliable warmth for years to come.
  • Peace of mind guaranteed: Backed by a comprehensive 10-year warranty, you can relax knowing your comfort is protected.

Check out the features and benefits of his gas Ideal Logic boiler below.



  • 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

*Quiet Mark is excluded on the Logic² Max Heat 12kW model.


Ideal Logic Max – FAQs

Find answers to your questions below, or get in contact for more information.

What Is the Central Heating Output Range of the 18kW Logic Max Heat² Model?

The 18kW Logic Max Heat² model’s central heating output tells you how much heat it can produce for warming your home. At a water temperature of 70°C, it can produce between 4.8 and 18.0 kW of heat, and at 40°C, it can produce between 5.1 and 19.1 kW. This range means it can adjust its heat output to efficiently meet different heating needs, making it versatile for various home sizes.

Is the Ideal Logic Max 18kw Heat a Good Boiler?

The Ideal Logic Max 18kW Heat boiler is generally considered a good choice for home heating needs. It is known for its efficiency, reliable performance, and user-friendly features, such as a large colour control screen. Its compatibility with green heating technologies also makes it a forward-thinking choice for those looking to integrate renewable energy sources.

Is the Ideal Logic Max 18kW model LPG Compatible?

Yes, the 18kW version of the Ideal Logic² Max Heat boiler offers the added benefit of being LPG (Liquefied Petroleum Gas) compatible. This means it can be converted for use with LPG, a useful feature for properties that don’t have access to a natural gas supply.

This flexibility in fuel choice makes it a versatile option for a variety of installation environments and user preferences. This adaptability is particularly beneficial for locations where LPG is more readily available or more economical than natural gas.

Is the Logic Max Heat 18kW Boiler Loud?

The sound power level indoors for this18kW boiler  is 44 dB, which is relatively quiet for a boiler of this size.



Available in outputs including 12kW, 15kW, 18kW, 24kW and 30kW.

LOGIC MAX HEAT² MODELS 12 15 18 24 30
LOGIC MAX HEAT² MODELS 27 27 27 27 27
Max Installation weight kg 21.9 21.9 21.9 21.9 21.9
CH Output(kW) min/max mean 70ºC 4.8-12.0 4.8-15.0 4.8-18.0 4.8-24.2 6.1-30.3
CH Output(kW) min/max mean 40ºC 5.1-13.0 5.1-15.9 5.1-19.1 5.1-25.6 6.4-31.0
SEDBUK rating (2005)% 91.1 91.2 91.1 91.2 91.1
SEDBUK rating (2009/2012)% 89.4 89.4 89.7 89.7 89.6
NOx Classification Class 6 Class 6 Class 6 Class 6 Class 6
LPG conversion No N0 Yes Yes Yes
Max Horizontal flue 9m 9m 9m 9m 9m
Max Vertical Flue 7.7m 7.5m 7.5m 7.5m 7.5m
Seasonal space heating efficiency class A A A A A
Seasonal space heating energy efficiency µs % 93 93 94 94 93
Sound power level indoors LWA Db 36 42 44 50 50
Sound power level, indoors LWA dB(A) 36 38 41 47 49


There are no reviews yet.

Be the first to review “Ideal Logic² Max Heat – 18KW”

Your email address will not be published. Required fields are marked *