Philadelphia new homes: preserve the HVAC sizing record

Questions covered in this guide

Local considerations

Philadelphia’s inspection table places a new-dwelling HVAC loads-and-sizing certification before final inspection. A design-to-installation sheet helps a new-home buyer track equipment substitutions and request the corresponding closeout evidence.

The comparison sheet links Philadelphia’s new-dwelling HVAC certification to equipment substitutions and the installed system. It helps the buyer request coherent design and closeout records without making sizing judgments independently.

Explore the national planning guide

Identify the new-home closeout requirement

Philadelphia lists an HVAC equipment certification for loads and sizing in new one- and two-family dwellings before final inspection. Ask the builder who prepares this record and how it stays aligned with the equipment actually installed.

Keep the design and purchase connected

Verify Philadelphia jurisdiction and that the project is a new dwelling within the stated category. Ask the builder to identify the design professional, HVAC contractor, and person responsible for the certification. Gather the current equipment schedule and relevant design references. This guide does not extend the new-home requirement to every replacement system or suggest that a homeowner can certify load calculations from floor area.

Prepare a design-to-installation comparison sheet

Create rows for each system, the space it serves, the equipment shown in the design, the equipment ordered, and the equipment installed. Add document references and a column for approved changes. If a model is substituted, ask the responsible professional to explain how the design and certification records will be updated. Record who resolves any difference before final inspection is requested. Avoid treating a similar advertised capacity as proof that two systems satisfy the same design.

Request the completed evidence at handover

Ask for the certification status, final equipment information, and recorded inspection outcome in the homeowner package. Keep unresolved corrections separate from the builder’s planned completion date. The national HVAC calculator provides preliminary budget context but cannot validate a Philadelphia new-home design or certification. A useful next step is a builder-confirmed responsibility list and a current equipment schedule, followed by a closeout record that reflects the actual approved installation rather than the system originally discussed during sales.

Sources and supported claims

Philadelphia lists HVAC equipment certification to verify loads and sizing for new one- and two-family dwellings.
Source ↗ · place · Checked 2026-10-12

That new-dwelling HVAC certification is listed before final inspection.
Source ↗ · place · Checked 2026-10-12