Energy Rated Windows from Coltlight.

Coltlight Windows offer only energy efficient rated windows, complying with the latest building regulations. We go above the minimum and offer A rated windows as a standard window installation, current regulations stipulate a minimum of at least a C rated window.

So what are Energy Rated Windows?

Window Energy Ratings tell you how energy-efficient your windows are.  The rating system is based on a scale of A-G, with A-rated windows being the most energy-efficient.  The scheme is similar to the energy ratings you will find on household appliances, white goods and light bulbs.

Considering the fact that up to 25% of the heat within most homes escapes through the windows, it’s easy to see why more and more people are opting for A-rated windows by installing energy-efficient glass into their existing window frames.


When planning a porch, there a 3 factors to consider:-

The BFRC Scheme is the UK’s national system for rating the energy efficiency of windows and is recognised within the Building Regulations as a method to show compliance for your replacement windows installation.

Window Energy Ratings use a consumer-friendly traffic-light style A-E ratings guide similar to that used on ‘white’ goods (such as fridges, freezers, washing machines etc…). This ratings label can be used by you to make more informed choices about the energy efficiency of the windows you are looking to purchase.

With carbon emissions high on the global agenda and the current high cost of fuel, we are all looking for ways to make our homes more energy efficient.

Each window rated by the BFRC has a unique label

Visit the BFRC website for more information.