In the average home, a quarter of the heat generated disappears via the windows. At Senator Windows we’re working very hard to bring that figure down, for the sake of the environment, your comfort and your wallet. And heat loss isn’t just through the glass, every component, from hardware to frames, can play its part. For example, there are multiple chambers inside our window and door frames, which act as a barrier which make it more difficult for the heat inside your home to be transferred to the outside. Your glazing choice also plays a huge part in energy efficiency, as does the spacer bar and the gas barrier between the panes of glass. While the emphasis is on preventing draughts and containing heat inside the house, it’s also important to remember that sunlight is a source of natural, free energy. The use of different glazing options throughout your home will ensure you get the benefit of the sun’s warmth to heat your home.
Here are some of the questions we are often asked about energy efficiency. If there’s anything else you’d like to know, please don’t hesitate to ask your local Senator Dealer.
The Senergy range of uPVC windows is designed by Senator to provide the ideal combination of energy efficiency and security. The Senergy range offers homeowners a comprehensive choice of security and glazing options to suit all kinds of homes, from traditional, to modern, from window replacements, to new-builds and extensions.
uPVC Passive and High Performance Casement Windows from Senator are crafted using the EnergyPlus90 window system. Most uPVC window systems are limited to 40mm glazing options – however EnergyPlus90 offers triple glazing as standard, in a choice of 48mm or 56mm units. There are numerous combinations of glazing available for EnergyPlus90, to suit every type of installation. Triple glazed units can incorporate laminate glass if high acoustic values are important to you.
Profile | Glazing | Locking system | Glass | Gas | Glazing | Overall U-value | Solar Gain |
---|---|---|---|---|---|---|---|
Passive House Compliant Window | |||||||
9 Chamber 90mm | Triple | Espag Security Locking | 6.8 Lam/Low E | Argon | 56mm | 0.73 | 0.57 |
High Performance Triple Glazed Windows | |||||||
9 Chamber 90mm | Triple | Espag Security Locking | Low Iron/Low E | Argon | 48mm | 0.78 | 0.64 |
9 Chamber 90mm | Triple | Espag Security Locking | Low Iron/Low E Plus | Argon | 48mm | 0.71 | 0.39 |
High Performance Quadruple Glazed Windows | |||||||
9 Chamber 90mm | Quadruple | Espag Security Locking | Low Iron/Low E Plus | Argon | 56mm | 0.68 | 0.31 |
9 Chamber 90mm | Quadruple | Espag Security Locking | Low Iron/Low E Plus | Krypton | 56mm | 0.53 | 0.31 |
glazing options
A window energy rating label is a recognised way of verifying your ‘U-value’ and ‘G-value’ for BER. Senator Windows products have registrations with the NSAI and BFRC.
The WER, or Window Energy Rating, indicates the energy-efficiency of your windows. The rating is established by measuring: a) the total solar heat transmittance, or the level of solar energy it allows in through the glass, this is known as the ‘G-value’; b) The ‘U-value’, which measures how well the whole window (glass and frame together), keeps heat in your home; and c) the level of air allowed in through the window seals.
Together these elements give the Rating for the whole window. A standard window size and configuration is used to ensure the rating is standard across all products. The value given to your window is given on a scale of ‘E’ to ‘A’, A-rated windows being the most energy-efficient. The WER rating system makes windows consistent with other products that have energy performance labels, such as washing machines, light bulbs and refrigerators
- THE THERMAL TRANSMITTANCE (U WINDOW)
- THE SOLAR FACTOR (G WINDOW)
- THE AIR LEAKAGE(L FACTOR)