The TCH does have the electric heater. I thought it was a comfort feature that was enabled when not in ECO mode. Turns out it is only used in ECO mode! Apparently it will allow the ICE to come up to temperature faster, using less fuel. The heater isn't as vigorous in ECO, and the heat doesn't come on any faster in ECO mode. I'd never guess the electric heater is there except for reading the service manual.