"Doesn't heat properly" triggers a return even when the unit works — it's a build shortcut.
Aluminum-clad or badly wound coils lose efficiency and run hot, and the buyer blames the stove, not the factory. A full copper coil with the winding spec verified per batch keeps the heat where it belongs and the returns off your books.
Stop 'slow heating' returns?
Tell us your wattage and we'll spec 100% copper coil with per-batch winding checks — so the unit actually performs.
