‰ NOW 15 WPM ‰ TEXT IS FROM FEBRUARY 2020 QST PAGE 68 ‰ COULD NOT DO ANY OF THIS WITH MICRO INVERTERS. HEATING AND COOLING A FINAL SHIFT IS OCCURRING IN HIGH EFFICIENCY HOME HEATING AND COOLING WITH MINI SPLIT HEAT PUMPS. THESE LOW COST SYSTEMS CAN BE INSTALLED IN ANY HOME WITHOUT DUCTWORK AND PROVIDE AC COOLING AND HEATING AT HALF THE PRICE OF OIL OR PROPANE WHILE KEEPING THE ORIGINAL SYSTEM FOR THOSE COLDEST NIGHTS. FURTHER, TO GET HIGH EFFICIENCIES, SOME OF THESE SYSTEMS ARE GOING WITH VARIABLE SPEED FANS AND COMPRESSORS, AND THIS MEANS THEY OPERATE INTERNALLY ‰ END OF 15 WPM TEXT ‚