我应该把地热系统换成燃气锅炉吗?
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我应该把地热系统换成燃气锅炉吗?
我在埃德蒙顿以东有一间2000平方英尺的节能平房。这座房子建于2007年，并在那一年获得了阿尔伯塔省的绿色愿景奖。Features include ICF walls basement to roof, infloor heating in basement, geothermal heating (closed loop, 6 wells 200 ft deep), triple E argon windows, R50 attic insulation, etc.
但是，地热系统中的同轴线圈已经生锈了，我知道该系统需要更换。它也没有帮助，单位，一个Altlas必需品?是由一家早已倒闭的公司制造的，安装程序从一开始就受到怀疑。目前我的地下室没有暖气，供暖人员不止一次告诉我，他不能给系统充电(我之前做过两次，有些成功)，否则他的票会被吊销。
To make a long story short, I will be presented with several cost options over the next few days which will include installing a new geothermal unit (ClimateMaster recommended although this assumes it's the unit and not a leak in the closed loop system, also I assume newer technology mean greater efficiency, problem is that it is American made and will take 6 - 8 weeks to arrive), gas furnace (I have gas to the house since my wife wanted a gas stove, a gas fire place and a gas barbque), or a natural gas boiler/electric furnace option (for radiant infloor heat in the basement and forced air heat on the main floor.
我两天前见了水管工和供暖工人，一直在试图找出最好的办法。我之前的所有研究(该住宅于2007年建造时)都表明，地热的前期成本较高，但从长期来看，这些成本将被每月较低的账单所抵消(ROI ~10年)，而且更换周期将在15至20年以上。不幸的是，这并没有发生。虽然我每月的燃气账单基本反映了配电费用(60美元/月)，但我的电费平均每月315美元(2200千瓦时/月，这可能是一个电力质量问题，因为我生活在一个英亩?)我现在正在考虑更换一个用了11.5年的东西，这当然令人沮丧。
Any thoughts would be appreciated.
Lawrence
Regarding the wait time for replacement parts forrepairing a geothermal heat pump这是一个关于舒适和不便的问题，我们当然不能向你提出建议，但如果你决定等待，也许一些电暖器可以让你度过这段时间，这取决于你使用地下室的次数。
For geothermal system repair:
You need to determine exactly what caused the failure, so first have a contractor pressure test the system to ensure it isn’t a leak down in the well.
我们打电话给ClimateMaster征求他们的意见，我们从他们的技术支持那里得到的反馈是如果水渗入制冷剂这是一个非常重要且代价高昂的故障，如果制冷剂渗入水中就不那么严重了可以通过更换同轴线圈来补救。
It’s of course frustrating to replace a system prematurely, but it’s still probably worth repairing the geothermal system rather than switching to gas, since digging the holes accounts for the biggest expense and it will offer savings long term. But if you decide to switch, of the options you laid out I’d go with the gas boiler and keep your warm floors, that way the tubing in the floor will continue to provide even heat distribution without having to run ducts around your house, which you would probably need to do with a gas furnace.
Radiant heat provides a lot of thermal comfort in a home, and given that you are already accustomed to having warm feet, I think the drop in floor temperature you would experience by switching to a forced-air heating system would be quite noticeable.