Water source
heat pumps.
Explore standard water-to-air and water-to-water equipment with source-linked capacities, cabinet dimensions, and application guidance.
8 product families. 52 documented models.
Original manufacturer photograph · exact model unconfirmedStandard units, clearly documented.
Start with water-to-air or water-to-water configurations. Every published model links back to the supplied specification page.
Water-to-air
- PBSMVertical water-to-air — largest single-compressor4 documented models
- PBVEVertical water-to-air — standard single-compressor8 documented models
- PBMCVertical water-to-air — compact6 documented models
- PBSCVertical water-to-air — scroll compressor4 documented models
- PBHSHorizontal split water-to-air — large4 documented models
- PHHSHorizontal split water-to-air — standard8 documented models
- PBSTVertical water-to-air triple function8 documented models
Water-to-water
Designed around two sections. One sealed core.
A proposed modular water source heat pump delivered as two transport sections: a thermal core carrying the whole sealed refrigerant circuit, and an air-movement and control section joined to it by a dry gasketed air joint. Configure it, separate it and walk through site assembly.
Explore the two-section concept ↗Principles, build and the ground loop.
Interactive pages that separate what the manufacturer documents say from general engineering principles and proposed improvements.

Built, installed, and photographed.
Original manufacturer images from the shop and field. These photographs show actual units; exact model identifiers remain unconfirmed where plates are unreadable.


Built for service as much as performance.
Dennis Campbell's design philosophy emphasizes accessible components, clear electrical documentation, durable cabinets, and practical serviceability.
Read the philosophy ↗
Numbers with their source attached.
The technical package contains conflicting identifiers and incomplete cabinet mappings. Those entries are documented separately and are not silently renamed or passed off as confirmed models.
Review source notes ↗