换热水系统 - 储热式还是即热式?

gwang · 发表于 2014-5-31 03:48:50

热水系统有点旧了，长命火经常熄灭。准备换一个。
大家说说哪种好，储热式还是即热式?
刚刚得到两个报价:
储热式
vulcan 170lt : $1300， Rheem 170lt: $1500
即热式:
Aquamax 26: $1800
大家看看哪个好?
以上价格包括拆卸，安装，拉线，拉管等全部工作。

高寿财 · 发表于 2014-5-31 05:20:49

There was not one definitive answer to this question, however there were some facts that everyone could agree on:
a) in existing homes, if you choose a tankless heater, it is possible that you will need to upgrade systems and fixtures due to low flow issues;
b) gas tankless water heaters are preferred over electric powered units;
c) studies have shown that the best tankless water heaters are more efficient than the traditional tank heater, however, tankless might not be as cost effective in the long run, unless you are installing in new construction; your existing system and fixtures are sufficient; or you are willing to upgrade;
d) It is suggested that heat pump water heaters may be a worthwhile candidate.
In summary, there are pros and cons to all of the water heating technologies available today, (including air-source heat pumps, and geothermal heat pumps).
You need to determine which is best for your particular situation. If you decide to stay with tank water heaters, there is a lot you can and should be doing to maintain its efficiency, including insulating & flushing.