Equipment comparisons

Two dials, one table, and a stated pick. Running costs are computed from the same energy prices everywhere on the site, so two comparisons cannot disagree with each other.

Every page here is built the same way, so they can be read against each other. The two dials show the one number that separates the options — a federal efficiency floor, a recovery rate, an allowed sag — with a one-line reading under each dial. The table underneath covers the factors a quote turns on: install cost drivers, running cost, comfort, service and where each option is a poor fit. The pick at the top is a starting position, not a verdict on every house, and every comparison links to the calculator that settles the question for a real load.