If you smell gas nowLeave the building without using switches, flames, or phones indoors. From outside, call 911 if there is immediate danger and call your gas utility. Contact a private-side contractor only after the area is declared safe.
The short answer
The system should be evaluated as a connected load, especially when heaters are added in phases. Roof or wall penetrations, impact exposure, lift access, and heater commissioning need coordinated ownership.
What matters in this situation
Commercial and multi-unit gas work adds operational consequences: multiple occupants, shared piping, equipment schedules, inspection coordination, and the need to document what can safely remain in service.
Details that help define the next step
- Heater count and input ratings
- Longest route and pipe material
- Existing regulator/manifold layout
- Lift and production access
These details help establish scope; they do not replace an emergency response, onsite inspection, utility decision, permit requirement, or manufacturer instruction.
How a careful service process is organized
- Start by documenting heater count and input ratings and longest route and pipe material.
- Confirm existing regulator/manifold layout and lift and production access before the scope is finalized.
- Have heater cut sheets and facility plan ready for the onsite team or authority.
- Use the findings to define the appropriate commercial gas line repair scope, required testing, and any next authority or trade.
What to have ready when requesting service
- Heater cut sheets
- Facility plan
- Operating/shutdown schedule
- Mechanical contractor contact
What not to do
Do not add heaters by copying the nearest branch without a load check. Keep relevant tags, notices, equipment information, and safely obtained photos available for the people handling this specific situation.