
When you’re in the market for a new hot water cylinder, you’ll soon come across the name ‘Megaflo’, as this is now one of the best-known brands available.
Megaflo (also known as “Megaflow”) water cylinders are available in a range of sizes, to suit houses and commercial properties big and small.
Book your Megaflo unvented water cylinder installation
What is a Megaflo unvented water cylinder?
Megaflo (often referred to as “Megaflow”) is a trade name for a specific model of unvented hot water cylinder, manufactured by long-established boiler manufacturer Heatrae Sadia.
Recognised for decades as a highly respected manufacturer of gas hot water cylinders, the British company manufactures its boilers in Warwick in the West Midlands, where it has been based for nearly a century.
Heatrae Sadia is now part of an international group which also features other well-known names in boiler and heating system manufacture, including Baxi in the domestic boiler market, and Potterton, which is better known for commercial installations.
An unvented hot water cylinder is fully sealed, and takes water directly from your mains supply. Now the most common type of water cylinder found in British homes, unvented cylinders are compact and need very little pipework.
What are the benefits of a Megaflo unvented water cylinder installation?
Megaflo (or “Megaflow”) unvented water cylinders are easy to install, and their compact nature means you can have one fitted in a spot where you’ll hardly notice it.
Megaflo unvented cylinders are a popular choice for anyone who needs plenty of hot water for fast-filling baths and invigorating, powerful showers – which together might once have been considered quite a luxury!
As the Megaflo Eco is hooked up directly to your mains cold water supply, you’ll have mains pressure hot water readily available at all outlets. In addition, the Megaflo Eco or newer Eco Plus hot water cylinders can be expanded, eliminating the need for unsightly expansion vessels. Fewer fitted parts, of course, also means that there’s less that can go wrong.
The modern Megaflo Eco Plus models have improved upon their predecessors, offering an even faster water flow rate of up to 176 litres per minute. The indirect heating coils or electric heating elements fitted to these newer versions have also been upgraded, and heat up much more quickly than earlier models. So you get a continuous flow of hot water whenever you need it.

Why choose to install and use a Megaflo (or “Megaflow”) unvented water cylinder:
- A robust, safe handle means your installer won’t have to struggle with fitting your Megaflo cylinder in the right place
- Improved reheat time in up-to-the-minute Megaflo unvented water cylinder models
- Megaflo models feature 60mm of CFC/HCFC-free injected foam for the best possible heat retention and energy efficiency
- High performance ‘coil-in-coil’ heat exchanger means your Megalflo (or “Megaflow”) unvented water cylinder will always be ready for action
- The Megaflo cylinder’s unique ‘L’ shape immersion heater maximises the volume of hot water available in direct models
- Titanium electric heating elements by Megaflo are designed to give many years’ service
Trusted installation of Megaflo unvented water cylinders by RJ Martindale
Your new Megaflo unvented water cylinder should always be installed by a G3-certified engineer.
G3 certification is essential for heating engineers who install, commission and service unvented hot water systems, as well as solar thermal hot water systems and air/ground source heat pumps. G3 training covers aspects including relevant legislation such as the Water Regulations, Building Regulations and British Standards, unsafe and emergency situations, pipework, testing and safety controls.
Delivering a highly trusted and reliable service to customers stretching from Bolton and Horwich to Chorley and Preston, RJ Martindale’s heating and plumbing engineers have installed thousands of gas boilers, central heating systems and unvented water cylinders.
We’re recommended! What are our customers saying about us?
RJ Martindale is 5*-rated in locations across the North West, with over 1000 5* reviews:
- “As usual top rate service from the whole team at RJ Martindale! They’ve taken 1st class care of my old central heating boiler, and at a reasonable cost”
- “They turned up on time, did a first rate job and left everything clean and tidy. Last but not least, everyone was a pleasure to deal with. I would have no hesitation in recommending them.”
- “These guys are reliable, professional and dependable top to bottom! I highly recommend them and the service they provide”
Install your Megaflo unvented water cylinder with RJ Martindale’s G3-certified team in Bolton, Horwich, Chorley & Preston
Installing Megaflo unvented water cylinders, as well as vented cylinders, boilers and central heating systems in Bolton, Horwich, Chorley and Preston, RJ Martindale is one of the North West’s most trusted Megaflo water cylinder, boiler and central heating installation organisations, protecting homes, families and investments with fully-qualified, reliable and experienced heating and plumbing services.
Book a FREE survey and install your Megaflo unvented water cylinder with RJ Martindale!
Book your Megaflo unvented water cylinder installation