HVAC (Heating, Cooling & Ventilation) — Fix Library

Your furnace is probably blowing cold air because the pilot light or igniter is out, the gas valve is off, or the…

Your furnace likely isn't turning on because the thermostat isn't sending a signal, the power is off, a safety switch has tripped,…

Your furnace short cycles because it overheats and trips its safety limit, usually from a dirty filter, blocked vents, or a faulty…

Your furnace is likely short cycling because a dirty air filter restricts airflow, causing the heat exchanger to overheat and trip the…

Your heat pump blows cold air in heat mode because it's likely in defrost cycle, the outdoor unit is frozen, refrigerant is…

Your heat pump likely has a refrigerant leak, a stuck reversing valve, or a defrost cycle issue causing it to blow cold…

Your heat pump blows cold air in heat mode because the reversing valve is stuck, refrigerant is low, or the outdoor unit…

Your heat pump blows cold air in heat mode because the outdoor unit is frozen, the refrigerant is low, or the reversing…

Your heat pump runs nonstop because it can't reach the thermostat setpoint — usually from a dirty air filter, low refrigerant, frozen…

A mini-split leaking water indoors usually means the condensate drain line is clogged, the drain pan is cracked, or the unit isn't…

A mini-split leaking water indoors usually means the condensate drain line is clogged or the unit isn't level, causing water to back…

Your mini split is leaking water inside because the condensate drain line is clogged or the drain pan is cracked, causing water…