Knowledge Base & Product Guides
Your comprehensive resource for heating and hot water solutions. This knowledge base contains expert guidance, technical documentation, and practical advice for all Flexiheat UK products including boilers, water heaters, air curtains, unit heaters, and MVHR systems.
Whether you’re a homeowner, installer, or commercial facility manager, you’ll find detailed information on:
From 50kW combi boilers and commercial water heaters to industrial air curtains and portable heating solutions, our knowledge base provides the technical expertise and practical guidance you need to make informed decisions. This helps you maintain optimal performance from your Flexiheat UK heating systems.
For additional support beyond our knowledge base, contact our expert team at 01202 822221 or sales@flexiheatuk.com
Direct hot water system ? What are they ? A direct-fired hot water system is powered by a direct-fired water heater, whereby the water’s heat source is physically contained within the hot water cylinder itself. As such, a direct fired hot water heater has a built-in gas or oil burner or electric immersion heater elements […]
Unvented hot water system Unvented hot water systems are a well-liked as a reliable source of hot water for home or commercial use. An unvented hot water system uses the mains water pressure to pressurise the system and deliver a high flow rate of hot water to all of the outlets throughout the property. We’ll […]
According to the HSE, domestic hot water must be kept in the cylinder at a minimum of 60 degrees Celsius to destroy legionella bacteria , which unfortunately can be fatal for human beings. Therefore, the best temperature or ideal temperature for your hot water tank is 60 °C, as 90% of the bacteria will die […]
Industrial water heaters Gas or Electric An industrial water heater provides a domestic hot water system – also know as DHW – which delivers hot water to fixtures used by people at the sink, in the shower, or bath and any other location where warm water may come into contact with humans for bathing or […]
Condensing Water Heaters Legislation UK Condensing water heaters – The UK government announced revisions to the approved document “L” of the Building Regulations of England and Wales, which defines the criteria for the energy performance and carbon emissions of new and existing buildings, on December 15, 2021. One of the modifications involves tighter thermal efficiency […]
What size electric boiler do I need? It is a question we are often asked. It may be in relation to a new property or replacing existing gas boilers or oil boilers. The following guide will take you through the process and things you need to consider when selecting the correct size boiler. We supply […]
How to size a commercial water heater A commercial water heater is required for supplying warm or hot potable water for showers, bathrooms, kitchens, restaurant sinks, washing machines etc and other purposes in a commercial or industrial building, such as schools, hotels, gyms or hospitals. A commercial water heater uses electrical elements or a burner […]
Why is warm air heating consistently popular for large spaces? Of the various options that are available for heating spaces such as factories, warehouses and retail ‘sheds’, warm air heating has been the most popular for decades. So why is this? The reason is that not only does warm air heating offer a number of […]
Flexiheat UK
Flexiheat UK 
Flexiheat UK
Flexiheat UK
Flexiheat Uk
Flexiheat UK