30% off All Heaters Sale! Waterco Electroheat MK V 23KW 240V 50HZ Request Price This product is already in your quote request list. Browse the list Sale! Pure Blue Onyx inverter 24.2kw Wifi (Madimack) $9,365.00 Original price was: $9,365.00.$6,555.00Current price is: $6,555.00. Sale! Pure Blue Diamond inverter 24kw Wifi (Madimack) $10,938.00 Original price was: $10,938.00.$7,656.00Current price is: $7,656.00.