Boiler-to-heat-pump retrofit

Boiler-to-heat-pump retrofit is an M36 showcase built from real Harth library objects: 7 parameterised instances of 6 distinct objects, with 2 authored joints recorded between their connectors. The background is authored geometry — a 10 × 8 m inspection floor with context massing, a north point and a 1.7 m scale figure — so every services item in the scene is a live, editable library instance rather than fixed mesh.

Open it and the services objects keep their parameters and connector metadata, so the agent can inspect, check and correct them. 16 connectors are deliberately left open.

Original reference-informed architectural template; no survey, scaleVerified=false.

Metres; local +X right, +Y up, +Z rear; ground FFL=0.

Furniture, structure and engineering details inferred; not construction or code-compliance documentation.

Existing-stock means an original comparison archetype; no actual property has been scanned or its concealed construction verified.

No address is supplied. Site and north are hypothetical; Google 3D Maps cannot be registered to this generic brief and no map mesh was imported.

Single weatherboard skin shown on timber frame; insulation, treatment and condition are unknown.

Authored inspection cutaway linked to a suggested host; this is not an overlay in that host building’s coordinates. Local extension objects require registration in the target Harth app before executing their placement actions.

Real library geometry and parameters are retained. GLB and IFC are static inspection mirrors; use the placement package to create editable Harth library instances.

No routing solver or persisted connection graph is claimed. The documented port pairs are authored joints, and every unused port is listed.

Nominal design geometry; no engineering rating, code compliance, horticultural suitability or cadastral accuracy is claimed.

Try these prompts with the agent:

Compare removed boiler, retained radiator and new heat-pump plant using the recorded phasing.

Inspect the new flow and isolation joints and enumerate unconnected return ports.

Check equipment access against the retained room envelope.

List the heat-loss, emitter and temperature evidence missing from this geometric retrofit comparison.