No homeowner is going to replace a functioning system. No one is arguing for that. But furnaces and central ACs don't last forever, so when one of them goes, th

No homeowner is going to replace a functioning system. No one is arguing for that. But furnaces and central ACs don't last forever, so when one of them goes, there's an opportunity for the homeowner to consider a more comfortable, efficient, safer, and healthier alternative (that is also better for the planet).