OK. Let me answer your question.
Q: Can I keep the microwave rangehood combo?
A: No. If you have somewhere to place a microwave,
then get rid of your current rangehood. Microwave
rangehood combo has never been, and will never be
good enough for Chinese cooking or serious gourmet
cooking, no matter how many CFM the manufacturer
boasts about.
The reason for this is that the chacteristic of the
blower is not good. Mostly I see many rangehood using
axial flow blowers. This is only good for low nois