Water around the equipment

Standing water or drips near the air handler, furnace, or drain.

Air Side

normal

Background

Venting and Draft
Concept
Vent categories, why draft matters, and the failures that put combustion products into the building.

Related procedure

Preventive Maintenance
Procedure
What a real maintenance visit covers on heating and cooling equipment, and why measurement beats inspection.

Local Code Notice

HVAC installation, venting, combustion air, ventilation air, gas piping, clearances, termination locations, electrical requirements, permits, and equipment requirements vary by jurisdiction and equipment. Always verify the applicable local codes, adopted code edition, regulations, permits, and manufacturer installation instructions before installation or service.