How efficient are electric boilers? How efficient are electric boilers? Well, the answer is at point of use, electric boilers are 100% energy efficient at the immersion heaters, turning all of the electricity they consume into usable heat. Could you please explain why they are sometimes quoted as being 99% to 100% energy efficient? Although virtually […]
Dual immersion cylinder range A dual immersion cylinder or twin immersion direct cylinder are simply a hot water cylinder with two immersion heaters fitted to the cylinder. They are often called an economy seven water heater, because the use economy seven off peak electricity to do most of the hot water heating, through the night […]
500 Litre Direct Unvented Cylinder Our 500 Litre direct unvented cylinder is built with corrosion-resistant duplex stainless steel and is at an affordable price. This unvented hot water cylinder for mains pressure hot water uses proven technology and quality production to provide high flow rates and a long product life. Flexiheat UK warranties this 500 […]
400 Litre Direct Unvented Cylinder Our 400 Litre direct unvented cylinder is built with corrosion-resistant duplex stainless steel and is reasonably priced. This unvented hot water cylinder for mains pressure hot water was created with high flow rates and a long product life in mind, utilising proven technology and a quality manufacturing method. Flexiheat UK […]
Renewable LPG – the present and future for Caravan heating & hot water production LPG Gas and why it’s so popular for caravan and park home heating and hot water Liquified petroleum gas (LPG) is currently the preferred fuel for heating and hot water generation in the caravan and park home sectors due […]
Direct Pressurised Hot Water Cylinders for Efficient Domestic Hot Water Heating Direct pressurised hot water cylinders are the most popular electric powered water heater or electric heating hot water system on the UK market. Introduction to direct hot water cylinders Direct hot water cylinders heat water using electrical immersion heaters within the cylinder itself. Direct […]
Buffer Vessel Sizing for Hydronic Heating Systems Buffer vessels are essential components in hydronic heating systems, providing thermal storage capacity that improves system efficiency, reduces equipment cycling, and enhances overall performance. Proper sizing of these vessels is critical to achieving optimal system operation. This guide covers the principles, calculations, and considerations necessary for correctly sizing […]
Crafted from high-grade duplex stainless steel and powered by twin 3 kW immersion heaters, the 170 L Direct Unvented Cylinder delivers mains-pressure hot water without the need for gas or oil boilers. Its patented internal venturi expansion system maintains a self-sustaining air pocket—eliminating external expansion vessels and reducing both installation time and lifetime maintenance. Manufactured under stringent UK quality controls and backed by a 25-year corrosion warranty, this cylinder ensures reliable performance in demanding residential and commercial settings while simplifying the installer’s workflow with minimal moving parts and clear, contractor-friendly specifications.
200 Litre direct unvented cylinder – Electric water heater Looking for a 200 litre direct unvented cylinder or 210 litre direct unvented cylinder in duplex stainless steel ? then we have you covered as we supply a 215 litre direct unvented cylinder which covers these direct models hot water capacity. Manufactured in the UK, with […]
300 Litre direct unvented cylinder Our 300 litre direct unvented cylinder is engineered in corrosion-resistant duplex stainless steel and is a competitively priced cylinder. We designed it to achieve high flow rates and a long product life using proven technology and a quality manufacturing process for this unvented hot water cylinder for mains pressure hot […]
