Boiler / Hydronic Heating Verification Checklist PDF

Full QC Checklist+

Verify inputs/sizing method, boiler selection and installation, baseboard/distribution installation, and commissioning/safety.

✓22 Inspection Points

✓4 Verification Categories

✓Inputs & Sizing Method+

Calculator mode (Boiler Size vs. Baseboard Length) matches the actual task
House area (Boiler mode) or room/zone area (Baseboard mode) accurately measured, not guessed
Correct IECC climate zone selected for the property's actual location
Insulation quality assessed honestly, not defaulted to Average without checking
Boiler mode: AFUE selection matches the specific boiler model actually being considered, not just the calculator's default
Baseboard mode: water temperature entered is the AVERAGE of supply and return (not the supply/aquastat setting alone), matching the actual or planned system design

✓Boiler Selection & Installation+

Net I=B=R output rating (not Gross/DOE Heating Capacity) matched directly against a specific boiler model's actual spec sheet
If the result flags "Exceeds Single Boiler": a licensed HVAC/hydronic contractor consulted rather than defaulting to the largest available single unit
Input BTU (nameplate) checked against the actual gas line/meter or oil tank/line supply capacity
Circulator pump sized to the shown GPM flow rate at the system's actual total head loss (not modeled by this calculator)
Combustion venting/chimney requirements confirmed for the selected AFUE tier (standard-efficiency atmospheric vs. condensing sidewall)
Near-boiler piping (primary/secondary loop, air separator, expansion tank, backflow preventer) follows the manufacturer's installation manual

✓Baseboard / Distribution Installation+

Water temperature used for baseboard sizing is the actual AVERAGE (supply + return, divided by 2) the system will run at — not the supply/aquastat setting alone
Single-zone baseboard run checked against the ~52 ft / 170 EDR guideline; split into multiple zone loops if the result flags it
Baseboard placement keeps furniture, drapery, and floor coverings clear of the manufacturer's stated clearance for convective airflow
Damper/enclosure installed and left open per the manufacturer's rating conditions
Piping to each individual zone sized for that zone's own required flow, not just the boiler's total combined output

✓Commissioning & Safety+

System purged of air and hydraulically balanced across all zones before considering the boiler commissioned
Pressure relief valve, low-water cutoff, and expansion tank precharge all verified functional at commissioning
Each zone's actual delivered temperature drop checked against the assumed design ΔT after commissioning
Licensed HVAC/hydronic heating contractor sign-off obtained before relying on this as a final design
Understood this is a square-footage planning estimate, not an ACCA Manual J load calculation or full hydronic engineering design

Inspection Notes+

Use the latest approved drawings, specifications, and site measurements.

Complete all critical checks before proceeding to the next work stage.

Record deviations and confirm rectification where required.

Inspection Notes

Use the latest approved drawings, specifications, and site measurements.

Complete all critical checks before proceeding to the next work stage.

Record deviations and confirm rectification where required.

Use it after collecting the project inputs and again before approving or closing the relevant work stage.

No. It supports verification but does not replace approved drawings, specifications, codes, manufacturer requirements, or professional inspection.