
80% Two-Stage Furnace Change-Out
Swapped in a Carrier Performance 80% two-stage gas furnace (58TP0B070V17–16). 90% option was ruled out on site due to no code-compliant vent path; kept existing B-vent with chimney liner/cap. Reused thermostat, EAC, drop & boot; removed humidifier. Added GFCI outlet (by EC), ran 5-wire to stat, installed a condensate pump, temp-wired and test-fired—final electrical by Powerhouse. System operates properly.







