Happy Years In Our Energy Efficient New Home
Happy Years In Our Energy Efficient New Home
Lindsay Scott of LAS Development and his family moved into their newly built high energy efficiency South Sound home just before Christmas, hoping that the many innovative design features and high efficiency appliances would drastically reduce their electricity bills, thus saving money and reducing their carbon footprint at the same time. The Journal finds out if they have succeeded in their dreams.
The day in question came in mid-January for the Scott family, a day that most of us dread, but one that they oddly were looking forward to with excitement the day the CUC bill arrived in their post office box.
The Scott's brand new 3,340 square foot home in Vienna Circle would, under normal circumstances, be an electricity-guzzler in today's high-cost energy climate, with the family most likely looking at an electricity bill on the wrong side of five hundred dollars.
Scott gives some background to the bill that they received: "The "Service Period" for this bill was 34 days from 3 December to 6 January. We moved into the home the last week of November and have maintained a constant temperature of between 77 to 80 degrees Fahrenheit throughout the house at all times of the day and night," he explains.
Here are the details of the family's first bill:
1. KWh consumption for the 34 days billed was 1,263 or 37.14 per day
2. The total bill for 34 days was $380.86 or $11.20 per day
3. The cost per square foot air conditioned per month (31 days) was $0.104 or 10.4 cents
"During this same time period last year we lived in a 1,300 square foot condo at The Residence in George Town near Eden Rock," Scott says.
Here are the details from last year's CUC bill for the same period:
1. KWh consumption for the 33 days billed was 1,193 or 36.15 per day
2. The total bill for the 33 days was $335.90 or $10.18 per day
3. The cost per square foot air conditioned per month (31 days) was $0.243 or 24.3 cents
For comparison, Scott says if the condo they lived in last year was as energy efficient as their new home, the CUC bill for that 33 day period would have been $134.33 instead of the $335.90 they paid.
He gives the formula for the above:
1. Current home consumes 31 days x 37.14 kWh per day = 1151.34 kWh per 31 day period
2. 1151.34 kWh per 31 day period / 3340 square feet = .3447 kWh per sq ft per month (month = 31 days)
3. Condo would have consumed .3447 kWh per square foot x 1300 square feet = 448.11 kWh per month (month = 31 days)
Cost for 448.11 kWh in January 2010 would have been:
1. 448.11 kWh x .2816 per kWh = $126.19 per month (month = 31 days)
2. CI $126.19 / 31 days = $4.07 per day
3. CI $4.07 per day x 33days = $134.33
"As you can imagine, we are very excited about the performance of our new energy efficient home," Scott confirms.
Scott says it's a testament to the design and construction of the home, whereby walls have been constructed using insulated concrete forms, the roof has been treated with Icynene, an energy efficient air extraction system has been installed, as well as high energy efficient air conditioning units with Daikin R410A condensers, a heat exchanger to keep the condensers cool and TiltCo windows that are hurricane proof and tightly fitted for maximum efficiency.
Energy efficient appliances made by Kitchen Aid and Whirlpool have added to the overall reduction in electricity consumption.
"We are looking forward to many happy years in our energy efficient new home," he concludes.
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