why do we need energy efficient housing
It may seem like a strange question, why build an energy efficient home, but nevertheless, there are some people out there who are asking it. The case for energy efficient homes is pretty straightforward. They provide their owners with:
In addition to the reasons listed above, an is also better for the environment; for example, 16% of all greenhouse gases produced in the United States come from residential dwellings. As the economy continues to struggle, many homeowners в and homebuyers в in their search to reduce costs, are becoming more aware of the benefits of energy efficient homes, which is why the demand for them has increased significantly. As a result, homeowners are getting their houses rated for energy efficiency in order to understand where they rank and what they need to do to improve. The вs (RESNET) (HERS) is the nationally recognized system for inspecting and calculating a home s energy performance. When a conducts an energy rating, it results in a for that home, based on its energy performance. The HERS Index is the industry standard by which a homeвs energy efficiency is measured. The way it works is: A certified RESNET HERS Rater assesses the energy efficiency of a home, assigning it a relative performance score. The lower the number, the more energy efficient the home. The U. S. Department of Energy has determined that a typical resale home scores 130 on the HERS Index while a standard new home is awarded a rating of 100. And the HERS Index Score is like a MPG (miles-per-gallon) sticker for houses.
It lets a in comparison to other similar homes. The next question is once youвve decided to build an energy efficient home, how would you do it? As it happens, builders are doing just that в building energy efficient homes. Because demand is rising, increasing numbers of builders are entering into Memorandums of Understanding (MoUs) with RESNET to have their. Buyers can then compare houses based on HERS Index scores, allowing them to make informed decisions about homes they want to purchase. When you look at all the facts, the answer to the question of why build an energy efficient home is simple really: because itвs the smart thing to do. An energy efficiency building effectively controls the flow of air, heat and moisture through the building. People spend 80 - 90% of their time indoors - at work, school and home. An efficient building maintains moderate temperatures, low humidity and increased air quality. Plus energy efficient buildings use less energy and cost less to operate and produce fewer greenhouse gasses, which is good for you and the environment. Improve indoor comfort and keep those toes warm! A model energy efficiency building controls the flow of air, heat and moisture. Insulation, ENERGY STAR certified windows, and air sealing work to keep the air inside the building warm and dry. Mechanical ventilation systems (fans, heat recovery ventilators and air exchangers on heating systems) circulate the internal air as well as expel unwanted moisture and other pollutants.
Properly sized, high-efficiency furnaces or boilers use less energy to heat buildings and, by controlling the air flow throughout the building, minimize the occurrences of hot and cold spots across all rooms. Improving your home or building's energy efficiency will save you money. For example, the average homeowner participating in the program will reduce energy use by approximately 30 percent, providing financial savings of $600 on a $2000 annual heating bill. Breathe healthy, fresh, clean air Just think of all the kettles, fish tanks, plants and even people who are expelling moisture into the air. Plus, microwaves, photocopiers, printers and even carpet and paint fumes all pollute indoor areas where we live and work. Controlling the airflow with mechanical ventilation helps confirm that the air in the building is being refreshed with outside air as often as required by building codes. For example, the air in a home should be completely replaced with fresh air every three hours. Fresh air takes less energy to heat than the inside air that slowly becomes contaminated with moisture and odors. An energy efficient and well-ventilated home is a healthy home. 10 to 50 litres of moisture are released inside a house each day. Humidity levels over 40% can create air quality problems. City Green advisors will show you how to reduce condensation and fogging on windows, staining on walls and ceilings, peeling paint, mould growth and odors. When humidity is above 50%, airborne diseases become more difficult to control.
To protect health and houses, all moist, stale air should be replaced with fresh air every 3 to 4 hours. Finding the balance between minimizing air leaks and ensuring appropriate ventilation is critical. City Green's Certified Energy Advisors are trained to assess your home's energy needs based on a 'house as a system' building science approach. Only the "house as a system" building science approach to retrofit planning will prevent problems that single product installations may cause. Energy efficient buildings typically have longer lifecycles, lower maintenance fees, and cost less to operate. Rental properties are more comfortable to live in, are quickly occupied, and report lower tenant turnover rates. The natural light, comfortable temperatures and increased indoor air quality of energy efficient commercial buildings results in increased staff productivity. And, homeowners benefit from increased control over their energy bills while living in a home that supports their lifestyle needs. Reduce greenhouse gas emissions and contribute to a healthier planet! Through energy efficiency retrofits, the average home built 20 years ago has the potential to lower their energy bills by 30% в and to reduce the amount of greenhouse gasses the house produces by 4. 5 tons per year. Lowering the total amount of greenhouse gasses in the atmosphere is an important step to reducing the impacts of climate change, both locally and globally.
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