Checklists by equipment
2 lists · 8 items · 14 photosElectric duct heater maintenance checklists
Electric duct heater maintenance checklists for the quarterly and annual rounds: 2 free lists, 8 items and 14 photo requirements, each item naming what to look for and the photo that proves it. Work is commonly verified against NEC (NFPA 70) and IMC (mechanical code); the edition in force is the AHJ's call on each project.
The electric duct heater rounds
Electric duct heater QuarterlyElectric duct heater quarterly maintenance checklistElements, airflow proving, high-limit cutouts and terminations checked on the quarterly round4 items7 photosElectric duct heater AnnualElectric duct heater annual maintenance checklistElement and contactor service and a full interlock and cutout verification on annual service4 items7 photos
Where each walk sits in the schedule
- Electric duct heater quarterly maintenance checklistquarterly
- Every quarter through the heating season, walked with the air handler that serves the duct. The heater only energizes with airflow, so a fan problem shows up here. Run by: The HVAC or maintenance tech on the quarterly mechanical round.
- Electric duct heater annual maintenance checklistannual
- Once a year ahead of the heating season, coordinated with the air handler service so the duct can be opened. Run by: The HVAC service lead with the licensed tech who certifies the safeties; the field observes and documents the results.
What most often fails on an electric duct heater
- Heater energizing with weak or no airflow because the sail switch or pressure proving is sticking — a life-safety interlock issue that gets documented, never bypassed.
- Discolored or loose lugs at the terminal block from heat cycling, found by staining before they arc.
- A blown element leaves a stage dead, so the space underheats and nobody knows which stage dropped.
- Airflow proving and high-limits function-tested by talking, not by actually interrupting airflow and confirming the heater drops out.
- Contactor contacts pitted from stage cycling and never checked, so a stuck contactor holds an element on with no call.
Verified against
Families only, never clause numbers. Adoption varies by jurisdiction; confirm the edition your authority having jurisdiction enforces before you run a walk against it.
Common questions
- Which electric duct heater maintenance rounds do these checklists cover?
- Electric duct heater quarterly maintenance checklist (quarterly): Every quarter through the heating season, walked with the air handler that serves the duct. The heater only energizes with airflow, so a fan problem shows up here. Electric duct heater annual maintenance checklist (annual): Once a year ahead of the heating season, coordinated with the air handler service so the duct can be opened.
- Who runs the electric duct heater maintenance round?
- The HVAC or maintenance tech on the quarterly mechanical round. The HVAC service lead with the licensed tech who certifies the safeties; the field observes and documents the results.
- What most often fails on an electric duct heater?
- Heater energizing with weak or no airflow because the sail switch or pressure proving is sticking — a life-safety interlock issue that gets documented, never bypassed. Discolored or loose lugs at the terminal block from heat cycling, found by staining before they arc. A blown element leaves a stage dead, so the space underheats and nobody knows which stage dropped. Airflow proving and high-limits function-tested by talking, not by actually interrupting airflow and confirming the heater drops out.
- Which standards is electric duct heater work verified against?
- NEC (NFPA 70), published by the National Fire Protection Association; IMC (mechanical code), published by the International Code Council. Adoption varies by jurisdiction. Confirm the edition your authority having jurisdiction enforces before you run a walk against it.
- Can I run these checklists in RTI?
- Yes. Start a free RTI workspace and load any of the 2 lists (8 items in total). The Photo Gate holds the submit button until every mandatory item is answered and its photos are attached, and approved inspections roll into a branded turnover package with a tamper-evident audit trail.