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Carrier
1.5 Ton Water Source Heat Pump
Carrier Horizontal, Left Hand Return, Copper Coil, R-454B | 50WCA018LBA3BA-A
$3,836.99
A water-source heat pump exchanges heat with a water loop — a boiler/cooling-tower loop in a commercial building or a ground loop in a geothermal system — instead of outdoor air. Because water holds a steadier temperature than air, these units deliver high, consistent efficiency year-round. Browse by capacity from 1 to 5 tons.
22 products
Carrier
Carrier Horizontal, Left Hand Return, Copper Coil, R-454B | 50WCA018LBA3BA-A
Carrier
Carrier Horizontal, Right Hand Return, Copper Coil, R-454B | 50WCA018RBA3BA-A
Carrier
Carrier Vertical, Left Hand Return, Copper Coil, R-454B | 50WCE018FBA3BA-A
Carrier
Carrier Vertical, Right Hand Return, Copper Coil, R-454B | 50WCE018EBA3BA-A
Carrier
Carrier Horizontal, Left Hand Return, Copper Coil, R-454B | 50WCA012LBA3BA-A
Carrier
Carrier Horizontal, Right Hand Return, Copper Coil, R-454B | 50WCA012RBA3BA-A
Carrier
Carrier Vertical, Left Hand Return, Copper Coil, R-454B | 50WCE012FBA3BA-A
Carrier
Carrier Vertical, Right Hand Return, Copper Coil, R-454B | 50WCE012EBA3BA-A
Carrier
Carrier Vertical, Left Hand Return, Copper Coil, R-454B | 50WCE030FBA3BA-A
Carrier
Carrier Vertical, Right Hand Return, Copper Coil, R-454B | 50WCE030EBA3BA-A
Carrier
Carrier Horizontal, Left Hand Return, Copper Coil, R-454B | 50WCA024LBA3BA-A
Carrier
Carrier Horizontal, Right Hand Return, Copper Coil, R-454B | 50WCA024RBA3BA-A
Carrier
Carrier Vertical, Left Hand Return, Copper Coil, R-454B | 50WCE024FBA3BA-A
Carrier
Carrier Vertical, Right Hand Return, Copper Coil, R-454B | 50WCE024EBA3BA-A
Carrier
Carrier Vertical, Left Hand Return, Copper Coil, R-454B | 50WCE042FBA3BA-A
Carrier
Carrier Vertical, Right Hand Return, Copper Coil, R-454B | 50WCE042EBA3BA-A
Carrier
Carrier Vertical, Left Hand Return, Copper Coil, R-454B | 50WCE036FBA3BA-A
Carrier
Carrier Vertical, Right Hand Return, Copper Coil, R-454B | 50WCE036EBA3BA-A
Carrier
Carrier Vertical, Left Hand Return, Copper Coil, R-454B | 50WCE048FBA3BA-A
Carrier
Carrier Vertical, Right Hand Return, Copper Coil, R-454B | 50WCE048EBA3BA-A
Carrier
Carrier Vertical, Left Hand Return, Copper Coil, R-454B | 50WCE060FBA3BA-A
Carrier
Carrier Vertical, Right Hand Return, Copper Coil, R-454B | 50WCE060EBA3BA-A
Water-source heat pumps shine where there's already a water loop or where a ground loop makes sense — multi-unit buildings, geothermal homes, and retrofits of existing loop systems. They install indoors, run quietly, and avoid the outdoor condenser entirely, but they depend on a properly designed loop and flow.
Key considerations:
Planning a loop or geothermal system? We'll help match units to your design →
An air-source heat pump exchanges heat with outdoor air; a water-source unit exchanges heat with a water loop. Water's stable temperature gives water-source units higher, more consistent efficiency, but they require a loop (geothermal ground loop or a building water loop).
Not necessarily. Geothermal systems use a ground loop, but water-source heat pumps are also common in commercial buildings served by a shared boiler/cooling-tower loop. The loop type drives the design.
They're rated in tons (1–5 tons here), but capacity depends heavily on entering water temperature and flow rate, so sizing should be done against your specific loop design rather than square footage alone.
Very. Because they trade heat with water that stays near a steady temperature, they avoid the efficiency swings air-source units face in extreme weather, delivering strong year-round performance.
Indoors — there's no outdoor condenser. They're compact and quiet, which makes them well suited to closets, mechanical rooms, and per-zone installations in multi-unit buildings.