Metro PCS's Best Toll-Free/800 Customer Phone Number This is Metro PCS's best phone number, the real-time current wait on hold and tools for skipping right through those phone lines to get right to a Metro PCS agent.
Making the world better, one answer at a time. Thin air is caused by low oxygen pressure at high altitudes. The lack of oxygen makes the air less dense. Thin air is caused by low oxygen pressure at high altitudes. The lack of oxygen makes the air less dense.
Several common problems can cause air conditioner freeze-ups: 1  Insufficient Air Flow: Anything that restricts air flow will cause the temperature of the systemâs evaporator coil to drop below freezing. Humidity in the air will collect on the coil causing ice to build-up and diminish the systemâs cooling capacity.