空调坏了，大家看看这种情况我是应该只换空调还是空调暖气一起换

房子在新英格兰地区，3卧2卫，1600 sqft。空调年龄23年，压缩机坏了，暖气年龄17年，还是好的。现在的报价是，如果只换空调是$6950，如果空调暖气一起换是$9857。如果是你，是只换空调还是连暖气一起换了。下面是安装空调的quote的细节，这个价格怎么样。

顺便感慨一下，真贵呀。疫情前给一个1000 的townhouse空调暖气一起换才$4400。

High e?ciency Carrier Weathermaker with a/c **

Install Carrier Weathermaker 14 SEER high e?ciency 2.5 ton a/c condenser model # PSAN43000N

Install Carrier 3 ton cased n-coil model # CVPVA3017XMC

Flush line set from condenser to coil with RX-11

Install new condensate pump

Existing electrical to be adapted to new equipment

Existing duct work to be adapted to new furnace

Install new thermostat

Free duct cleaning during install

Vacuum test system and charge with freon

Test run system and check for proper function 

Removal and disposal or old equipmen

1 year warranty on parts and labor

5 year Carrier warranty on parts (10 years with owner online registration)