1、燒水(shui)(shui)速度(du)：燃氣(qi)熱水(shui)(shui)器(qi)是(shi)即熱式(shi)的，集(ji)成熱水(shui)(shui)器(qi)也是(shi)即熱式(shi)，所以兩者燒水(shui)(shui)速度(du)不分(fen)伯仲。

2、水(shui)溫恒(heng)定(ding)(ding)(ding)與(yu)否：燃氣熱(re)水(shui)器水(shui)溫并不(bu)恒(heng)定(ding)(ding)(ding)，會受水(shui)壓和燃氣流量等多方面的(de)影(ying)響(xiang)，而集成熱(re)水(shui)器水(shui)溫控(kong)制(zhi)比較厲害，相對來說更穩(wen)定(ding)(ding)(ding)。

3、出熱(re)水(shui)(shui)(shui)速(su)度(du)：因為燃氣熱(re)水(shui)(shui)(shui)器的水(shui)(shui)(shui)管長度(du)要大于集(ji)成熱(re)水(shui)(shui)(shui)器，所以燃氣熱(re)水(shui)(shui)(shui)器的出水(shui)(shui)(shui)速(su)度(du)會相對(dui)來(lai)說(shuo)比較慢，因為要等待熱(re)水(shui)(shui)(shui)從出水(shui)(shui)(shui)口(kou)流過(guo)來(lai)。

4、使用(yong)成(cheng)本：因為電費(fei)比燃氣費(fei)要(yao)貴一點(dian)，所(suo)以燃氣熱水器的使用(yong)成(cheng)本會更低一點(dian)。