@pooldv, I asked my installation company that very same question. They stated they don't directly install their pool equipment, they subcontract that work to an electrician/plumbers/gas company. They don't want to add another layer of complexity by bringing in a new (innovative) product. Remember that not everyone (at least in FL is what they said) orders/installs heaters (gas/electric/solar). So adding another product that would probably not sell in mass quantities would not add a lot of value to their bottom line. The complexity would also include covering warranty for an expensive part of the home that is probably not new and not installed by them (A/C), a modification to the air conditioner (ie. if there is an issue with the A/C they are now in the hook). Not to add that people are creatures of habit, often unwilling to try or adopt new things.