Some (but nowhere near all) of this is expensive because of gas appliances. If you have a powerful range hood you also need a complex makeup air system to avoid

Some (but nowhere near all) of this is expensive because of gas appliances. If you have a powerful range hood you also need a complex makeup air system to avoid the hood pulling CO from your gas furnace and killing you. That makeup air system can also cause problems: if the grease that accumulates in the hood catches on fire, it can keep injecting air into the fire. I’d like it to be easier to get a good range hood (some of the bad air quality effects of cooking are smoke from searing a steak!), which maybe electrification will help with.