Contractor 給出三個不同的報價:
Option 1:
1/ Carlin EZ Gas conversion natural gas burner connected to existing heating system and existing gas meter. Gas line will need to be increased from ¾” pipe to 1” pipe to accommodate for the new burner.
Option 2:
1/ Peerless MI06 82% efficient natural gas boiler connected to existing gas meter, piping and venting.
Option 3:
1/ Weil McLain Ultra PHD155 93% high efficiency natural gas boiler connected to existing gas meter and piping.
我的理解第一個Option是隻換burner和相應的piping,保留原先的existing heating system (boiler),有沒有哪位做過,可行嗎? 謝謝!