Baxi Megaflo System

The Baxi Megaflo System boiler combines high efficiency and excellent environmental credentials with performance and style.  For homes with a high demand for hot water, or with more than one bathroom, it will satisfy all your hot water requirements while heating your home.

It has the highest SEDBUK Band 'A' rating, so it will reduce your energy bills compared with old, standard efficiency boilers, and lower your carbon emissions.

The Baxi Megaflo System is now available with a 7 year warranty when registered before 31st December 2016*.

Megaflo HE A
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*Terms and conditions apply

Megaflo system HE A clearance

A: Boiler width = 450mm

B: Boiler height = 780mm

C: Boiler depth = 345mm

D: Side clearance = 5mm

E: Upper clearance = 200mm

F: Lower clearance = 150mm

G: Front clearance = 5mm in operation, 450mm for servicing

Megaflo System 15KW Megaflo System 18KW Megaflo System 24KW Megaflo System 28KW Megaflo System 32KW
Heat Output Central Heating (CH) (70°C Mean) kW (Max) 15 18 24 28 32
kW (Min) 3.9 4.2 9.4 9.4 9.4
NOx Class 5 5 5 5 5
NOx Levels mg/kWh 27.5 31.7 22.3 21.8 26.8
SAP 2009 Annual Efficiency (PCDB/SEDBUK) % 88.6 88.6  88.6  88.5  88.5 
ErP Product Information 
NOx      mg/kWh  25  29  20  20  24 
Sound Power Level, Indoors  LWA dB  52  53  58  53  54 
Space Heating Efficiency Class   
Mechanical & Hydraulic Connections
CH Flow/Return Pipe Size (mm) 22 22 22 22 22
Condensate Discharge Pipe Size (mm) 21.5 21.5 21.5 21.5 21.5
  • Pre-plumbing jig, complete with pre-formed copper pipe tails, built in filling loop and 1 metre mains cable to save the installer time and money during installation
  • Compatible with Multifit flue kits, which provide an industry leading choice of lengths, bends and accessories, allowing for versatile siting
  • Front access to all components for straightforward and quick servicing
  • Free of charge Baxi product training throughout the UK
  • Free Gas Safe notification and warranty registration online, saving you time and money on any Baxi boiler you install through the works loyalty scheme

The Baxi Megaflo System is compatible with a range of accessories & and products ensuring even greater efficiency and energy saving.

  • Baxi Solarflo thermal range using free energy from the sun to generate hot water
  • Megaflo Eco and Megaflo Eco Solar hot water storage cylinders
  • Baxi room thermostat which can achieve additional savings of £70 and 280 kg carbon dioxide a year according to Energy Saving Trust.


Baxi's system boiler range comes with product literature for homeowners and installers alike. To learn more about the features the Baxi Megaflo has to offer, plus gain knowledge of the boiler, download our documents.

  • Megaflo System ErP homeowner guide (PDF 0.82MB, 22/01/2016)
  • Baxi Platinum, Duo-tec and Megaflo ErP range guide (PDF 2.42MB, 01/10/2015)
  • Baxi Megaflo System ErP user guide (PDF 1.62MB, 05/01/2016)
  • Baxi Megaflo System ErP installation and servicing manual (PDF 5.72MB, 05/01/2016)
  • We don't sell our products directly to consumers which is why our prices aren't on our website.

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    Download documents about the Baxi Megaflo System, from installation information, to brochures and user guides.