Geoffrey Maksym 
Member since Dec 18, 2012


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Re: “Halifax is a solar city

Hi - In response to the comment by Sweets,

Solar systems actually save more energy than in-line boosters. In fact citing, the Energy Star web site: http://www.energystar.gov/index.cfm?c=sola…, you can achieve a typical savings of 50% in the US, or I estimate about 40% in Canada, on a solar system. We have one of these and it works well - pumping the heat into our tank using solar energy to heat the water and solar energy to drive the pump - free energy. In NS electricity prices are 25% higher than the national average, so the savings are even greater in making this a reasonable choice. The in-line systems do save energy also, but not as much, about 24-34%, and only to that degree in homes with lower than average water usage - typical savings from these systems in a larger family can be only 11%. If you combine the systems, the savings don’t add but combine, leading to a bit more potential savings = 1-(1-0.4)*(1-0.24) = 54% to 60% for low water users -- but then you are replacing your existing system with two at the same time. http://energy.gov/energysaver/articles/tan…

Overall more bang per dollar spent in renovation is to use a solar water heater with a new tank next to your existing tank and take advantage of the NS program! When it’s time to replace your old tank, you can get a smaller tank as your backup/booster which works great for a family of 4, or if your water usage is low, replace it with an in-line booster achieving a bit more savings in the long run. Saving energy means less burning fossil fuels and less CO2.

Geoff

5 likes, 0 dislikes
Posted by Geoffrey Maksym on 12/18/2012 at 10:21 AM

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