HVAC disconnects wrapper
Why you care (60 seconds)
HVAC equipment needs a proper disconnect for servicing and safety. Missing it is a common inspection fail and a safety hazard.
Where people lose time
- Installing a disconnect too far from the unit.
- Selecting the wrong type or rating of disconnect.
- Ignoring equipment instructions about required disconnecting means.
This is
The rule in plain language
HVAC equipment must have a suitable disconnecting means that is properly rated and located for servicing.
When it applies
Air-conditioning and refrigeration equipment that requires a disconnect.
What you must do (checklist)
- Provide a disconnect within sight and readily accessible when required.
- Match the disconnect rating to equipment requirements.
- Follow manufacturer instructions for disconnect type and location.
- Maintain working space and clear access.
Quick examples
- A rooftop unit requires a disconnect within sight on the roof.
- A fused disconnect may be required when specified by the equipment.
This is not
Common misreads
- Using a breaker far away as the disconnect without meeting the rules.
- Assuming a switch in a different room is acceptable.
What it doesn't cover
- Circuit sizing for HVAC loads.
- Motor overload or OCPD sizing specifics.
False friends
- A service receptacle is not a disconnecting means.
Exceptions & edge cases
- Some equipment includes an integral disconnect.
- Certain locations allow a lockable breaker to serve as the disconnect.
Cross-references (NEC map)
- Primary: 440.11, 440.14
- Secondary: 110.3(B), 110.26
Exam traps
- Missing the "within sight" requirement where it applies.
- Overlooking equipment instruction requirements.
Field notes
- Coordinate disconnect location with mechanical contractors early.
- Verify disconnect rating and labeling before final.
AHJ / Local amendments notes (placeholder)
- Add local amendments or interpretations here.
Revision notes
- Draft wrapper created for HVAC disconnects.