Whalen
Vertical stack specialists: riser-mounted fan coils and water-source heat pumps stacked floor over floor behind hi-rise closet doors. The risers are shared infrastructure — know the isolation valves before you open anything.
What they make
Vertical stack fan coil
Lessons carry overThe hi-rise closet unit: a vertical chassis on shared risers, floor after floor of the same machine. Hydronic two/four-pipe, or water-source heat pump versions.
Blower, float-switch and control failures echo the board’s indoor wing. Hydronic diagnosis is its own trade — and the risers are SHARED: isolate and know the building’s valves before opening anything wet.
Open in the Copilot (reference) →Practice: no air inside →Practice: acting possessed →
Water-source / geothermal heat pump
Lessons carry overA heat pump that trades with water instead of outdoor air — a building loop in condos and offices, a ground loop in geo homes. Compact, quiet, hidden in closets.
The compressor circuit — caps, contactors, windings — fails exactly like the board’s scenarios. The “condenser” is a water loop: verify flow, entering water temperature and ΔT before you trust any gauge reading.
Open in the Copilot (reference) →Practice: runs but won’t cool →Practice: gauges on →
Tech support
Tech support here is the guided Copilot with your Whalen info already loaded — one question at a time, evidence before parts, and everything you enter rides into the service report.
Model-number decoding here covers residential and multi-family split systems and package units, 5 tons and under — Whalen equipment lives outside that scope, so the manufacturer’s literature leads on model specifics. The Copilot still loads the brand for a guided session.
Start tech support — Whalen loaded →