Megaflo Unvented Cylinders

Why choose a Megaflo unvented cylinder

  • Higher flow rates for hot water delivery
  • High performance showering & fast filling baths
  • Space saving – no requirement for a separate water tank in the loft space
  • Quieter mains pressure system - no noisy cistern in the loft

Get your FREE 'no obligation' quote today!

A Megaflo system is a great way to heat up water for your entire property and deliver hot water to multiple taps simultaneously at a high flow rate.

A Megaflo unvented cylinder could be a perfect solution if your home has 2 or more bathrooms or suffers from low water pressure.

What is a Megaflo?

A Megaflo is the leading brand in unvented hot water. Heatrae Sadia manufacturer a range of products and are are well respected for their high quality.

To deal with hot water expansion Megaflo cylinders have an expansion vessel built into and concealed within the cylinder itself. This eliminates the requirement for a hot water (feed and expansion) tank in the loft.

Your water pressure needs to be between 1.5 – 3.5 Bar pressure.

Benefits of installing a Megaflo?

  • Higher flow rates for efficient hot water delivery (Up to 72 litres/min)
  • High performance showering & fast filling baths
  • Quieter mains pressure system (no noisy cistern in the loft)
  • 25-year transferable cylinder guarantee
  • 5-year guarantee on the cold-water control valve
  • Space saving – no requirement for a separate water tank in the loft space
  • No fear of frozen loft pipes*

* Assumes sealed system boiler with Megaflo in frost free position


Megaflo installation

Megaflo installation costs differ with every installation. It may depend on the location of the cylinder, your mains water supply, your electrical circuit.

We will perform a free ‘no obligation’ survey of your existing central heating system and discuss the options available to you. Book your free home survey today.

Recommended installers

As Megaflo recommended installers we are highly qualified in Hot Water Systems and Safety and hold the ‘Part G3’ certification for working on unvented cylinders

Megaflo unvented cylinder products

Megaflo Eco

Megaflo Eco

Megaflo Eco Plus

Megaflo Eco Plus

Megaflo Eco Solar

Megaflo Eco Solar

Megaflo Eco SolaReady

Megaflo SolaReady

Megaflo Eco SystemFit

Megaflo SystemFit

Megaflo Eco SystemReady

Megaflo SystemReady

Megaflo servicing

We recommend that your Megaflo cylinder is serviced annually to maintain optimum performance. In hard water areas, this is especially recommended because the immersion heater elements are much more likely to require descaling.

All servicing must be carried out by a competent person with the correct qualifications and certification. At Palace Plumbers, should we require any replacement parts, we’ll only use authorised Hectare Sadia spare parts.

During your Megaflo service our G3 certified heating engineer will:

  • Check the operation of safety valves
  • Clean the strainer
  • Drain the Megafo unit
  • Descale the immersion heater
  • Refill the system
  • Fill in the logbook

Megaflo repair

If your Megaflo cylinder has stopped working, developed a fault, or broken down completely we can send an emergency engineers to fix it at a convenient time that suits you. We are expert as fault finding and will make sure that your system is back operating at optimum performance levels as quickly as possible.

All our Megaflo engineers are Unvented Hot Water Storage Systems (G3) trained so you can be confident that we are competent to carry out any installation repair or servicing of Megaflo units.



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Customers Love Palace Plumbers


I've used other local plumbing companies in the past but will continue with Palace Plumbers from now on. The office staff are very helpful and the engineers have been on time every day to install my new boiler.


Taz, the plumber who visited, was very courteous and managed to fix my shower and toilet in just over an hour. The time went slightly beyond the hour but I wasn't charged any extra for this.

Henry Fullerton VERIFIED

Boiler repair was carried out swiftly. It's been 2 weeks and my heating system is working better than ever. I've already booked up my annual service for later in the year. 2 thumbs up.

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