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Excel Electrical Services Ltd work in conjunction with many local Eco builders and architects and can provide services for
Modern well insulated homes with central heating suffer air pollution up to 10 times worse than outside, according to a ‘Which’ report.
Surveys by the (Department of Environment Transport Region) DETR and the Building Research Establishment (BRE) have Carbon Dioxide levels in one in ten British homes above World Health Organisation guidelines.
Current Building Regulations call for extractor fans in all wet areas of the property including the kitchen, bathroom, utility, en-suite, WC and trickle vents in all the windows to allow air back into the property, at a cost to the homebuilder
A heat recovery system is designed to completely change all the air in the property at least once every two hours, continually replacing the stale damp air with fresh, warmed, clean, filtered air.
A typical heat recovery ventilation unit recovers 60-70% of the heat normally lost through trickle vents and other breakout points in the building structure
Ducting connects the stale air exhaust grille to the heat recovery unit and extracts via ducting to all the wet areas of the property. The stale air passes through the cross-flow heat exchanger and 65-70% of the heat normally lost via trickle vents is recovered.
Fresh air is brought into the property via a separate external grille, passes though the heat exchanger and picks up the heat recovered from the stale air. There is no mixing of airflows – only the transfer of heat. The warmed fresh air is then ducted to all the habitable rooms within the property
Energy Efficient Light Bulbs
The sustainable building industry is primarily focused on energy efficient lighting solutions. Standard light bulbs, known as incandescent bulbs, are known to be highly inefficient. Electricity is passed through a metal (tungsten) filament that heats to over 2000º Celsius and glows to give off light. Only 10% of the electrical energy are converted to light; 90% is wasted as heat. Halogen bulbs are similar but instead have a small pocket of halogen gas that reacts with tungsten to produce light. They burn brighter, use less electricity and last twice as long as a standard bulb, but are still inefficient compared with other forms of bulbs.
Energy efficient light bulbs use significantly less energy than incandescent bulbs, and also last longer.
LEDs themselves have been around for some time, but only recently have improvements in efficiency, cost and output made them viable for the larger-scale lighting used in households, businesses and other environments. Due to rapid progress in LED technologies, products exist with wide ranges of efficiencies and life spans.
The bulbs can work for up to 50000hours, if not run outsideof the specified temperature range. They use about 8-11 watts of power to replace 60 watt incandescent or 6 watts for a 50 watt halogen lamp. This capacity provides an efficiency gain of up to 80%.
Other benefits of LED light bulbs:
Technology is available to optimise the voltage on your electrical installation. By reducing and managing the voltage coming into your home the device will ensure many of your electrical appliances use less electricity and cost less to run. It will also lower your carbon emissions.
Voltage coming into your home is typically 245v. The ‘add-on’ device reduces this voltage and maintains 220v.
Typically whole house savings are in the region of 10%, which means, household electricity bills will be around 10% less each year.
The ‘add-on’ device is installed alongside your fusebox and must be installed by a qualified electrician.