2015 International Mechanical Code

Changes in this edition include:
Condensate pumps located in uninhabitable spaces and used with condensing fuel-fired appliances and cooling equipment must be connected to the appliance or equipment to prevent water damage if the pump fails.
The ventilation system for enclosed parking garages must operate continuously or be automatically controlled for intermittent operation utilizing both carbon monoxide and nitrogren dioxide detectors.
New text recognizes the use of dryer exhaust duct power ventilators (DEDPV) for installations that exceed the allowable exhaust duct length for clothes dryers.
New text regulates the design and construction of exhaust shafts that serve domestic kitchen exhause systems in multi-story buildings.