Radiant Floor Heating Verification Checklist PDF

Full QC Checklist+

Verify inputs/sizing method, floor covering and preliminary output screening, tubing layout and loop design, and installation/commissioning.

✓23 Inspection Points

✓4 Verification Categories

✓Inputs & Sizing Method+

Room/zone area accurately measured, not guessed
Excluded Area entered for cabinets, tubs, islands, and other fixed fixtures where tubing can't be laid, not left at 0 by default
Correct IECC climate zone selected for the property's actual location
Insulation quality assessed honestly, not defaulted to Average without checking
Floor Covering selection matches the actual planned finish, not a placeholder
Tube Diameter matches the actual PEX/tubing product being purchased, not just a default
Manifold Distance measured (or reasonably estimated) for this specific room/zone, not left at the default

✓Floor Covering & Preliminary Output Screening+

Preliminary output screening result reviewed and understood as a rough screen, not a final design determination
A full design check (or licensed contractor review) obtained before finalizing, regardless of which way the preliminary screening result leans
If the screening flags likely insufficient: a specific remedy chosen (lower-resistance covering, tighter spacing within a full design check, supplemental heat source, or accept a lower indoor design temperature) rather than ignored
Actual floor covering's manufacturer thermal resistance/R-value checked against the general category selected here
Rooms with unusually large window/glass area (sunrooms, great rooms) re-checked against a more detailed load calculation before trusting a borderline preliminary screening result

✓Tubing Layout & Loop Design+

Required Loops figure matches the manifold's actual number of available loop ports
Individual loop lengths kept within roughly 10% of each other where practical, for easier flow balancing
Ordering Length (not Active Tubing Length) used when purchasing material, and Manifold Distance entered accurately for each zone
Tubing layout plan avoids fixed obstructions (cabinets, permanent fixtures, structural elements) before installation begins

✓Installation & Commissioning+

Tubing pressure-tested and confirmed leak-free before pouring slab, installing subfloor, or closing up the assembly
System operating water temperature confirmed against a full design procedure for the actual assembly and load, not a fixed "typical" range and not a boiler's higher baseboard/radiator temperature
A mixing valve (or dedicated low-temperature boiler/heat source) installed to bring shared-system water temperature down into the radiant-safe range
Each loop's flow balanced at the manifold using flow meters/balancing valves before considering the zone commissioned
Floor surface temperature checked after startup and confirmed not to routinely exceed 85°F
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.