Maintenance on an air conditioning unit inside Terminal 4 at Phoenix Sky Harbor International Airport on Wednesday morning resulted in long wait times at security checkpoints for travelers.

PHOENIX — Phoenix Sky Harbor International Airport says a planned air-conditioning outage impacted the airport Wednesday morning ahead of record-breaking heat.

Like Starlux, whose nonstop Phoenix-Taiwan flight is scheduled to begin in February 2026 pending government approvals, China Airlines' main hub is Taoyuan International Airport in Taipei.

An air conditioning unit in Terminal 4 of the Phoenix Sky Harbor Airport was deactivated for routine maintenance and stayed off longer than expected.

An air conditioning unit in Terminal 4 of the Phoenix Sky Harbor Airport was deactivated for routine maintenance and stayed off longer than expected.

An air conditioning unit in Terminal 4 of the Phoenix Sky Harbor Airport was deactivated for routine maintenance and stayed off longer than expected.

An air conditioning unit in Terminal 4 of the Phoenix Sky Harbor Airport was deactivated for routine maintenance and stayed off longer than expected.

The Phoenix City Council made changes to its heat ordinance after Sky Harbor workers testified about the extreme conditions.