AC unit freezing up — San Francisco, California
Ice forming on your air conditioner's evaporator coil or refrigerant lines signals restricted airflow or a refrigerant issue. Running a frozen unit can damage the compressor — the most expensive component. An HVAC technician can safely thaw the system, find the cause (dirty filter, low refrigerant, or a failing blower), and prevent repeat freeze-ups.
Waarom dit veel voorkomt in San Francisco
The cool, foggy maritime climate means central AC is rare and rarely needed, so HVAC work centers on heating efficiency, ventilation, and increasingly heat-pump retrofits driven by Title 24 energy rules. Older homes often have undersized or outdated heating systems requiring careful upgrades.
Who to call
For this problem in San Francisco, call a: Klimaattechnicus
Vind een Klimaattechnicus in San FranciscoSymptoms to look for
- Visible ice or frost on the outdoor unit, refrigerant lines, or indoor evaporator coil
- Warm air blowing from vents even though the AC is set to cool
- Water puddles or dripping around the indoor air handler
- AC runs continuously without reaching the thermostat set temperature
- Hissing or bubbling sound near the refrigerant lines
Spoeddienst in San Francisco
Emergency home services in San Francisco are available 24/7 at premium rates — expect $150–$300+/hour for after-hours plumbing or electrical, the highest tier in the US. Response times average 45–90 minutes given hilly terrain and parking scarcity. Always verify an active CSLB license and proper DBI permits.