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Vertical Stack
Water Source Heat Pumps

Model UVHP : Sizes 02-12 / 0.5 - 3.0 tons

Unilux HVAC’s signature heat pump, crafted for residential applications, seamlessly combines peak energy efficiency with low upfront costs. Operating on a closed water loop, our water source heat pumps excel in extracting heat from the loop to disperse it for heating or absorbing heat from the suite and expelling it back to the loop for cooling. This on-demand heating and cooling solution operates independently for each suite, ensuring year-round comfort.

Integrated ERV

Ratings and Listings

Equipping your heat pump with our patented integrated Energy Recovery Ventilation (ERV) technology introduces fresh air into the suite while minimizing energy loss through an advanced heat transfer core. This not only enhances the efficiency of heating and cooling but also facilitates the transfer of moisture between the exhaust and fresh air for heightened resident comfort.

Unilux HVAC vertical stack heat pumps are ETL listed.

Standard Features


Manufactured with 20-gauge satin steel. Configured with front, back, left, right or top supply air openings. Cabinet is fully insulated with 1″ fibreglass with a thermosetting resin. It is coated on the air stream side with an acrylic facing without the use of flammable adhesives. Insulation inside the unit has a flame-spread rating no more than 25 and a smoke-developed rating no more than 50.


Drain Pan and Overflow Sensor

Stainless-steel drain pan with neoprene insulation. A flex hose connects the drain pan with the condensate riser to form P-trap and is easily accessible for cleaning. The pan includes an overflow sensor to detect rising water levels and turn off the unit to prevent flooding.

Feature-VHP-Drain Pan


Supply and return risers are type ‘L’ copper and condensate risers are type ‘DWV’. All have 75mm (3″) deep expanded ends to facilitate field installation. Supply and return risers are insulated with 1″ fibreglass covered with a vapour barrier jacket, which complies with ASTM 84 for flame-spread and smoke-developed ratings. The insulation is continuous over the riser length within the height of the cabinet.


Supply Air Grilles & Registers

Double-deflection supply air grilles have adjustable vertical and horizontal louvers. They are constructed with light gauge, powder-coated metal.

Feature-VHP-Supply Air Grille

Fan & Motor Assembly

A thermally-protected, multi-speed ECM motor is resiliently mounted to a centrifugal fan which has a galvanized steel forward-curved DWDI wheel in a galvanized housing.

Feature-VHP-Motor Blower Assembly

Refrigeration Chassis

A completely removable, floating design chassis minimizes vibration and allows easy access for service. The chassis is complete with a rotary or scroll compressor enclosed in a sound dampening and isolated box, coax heat exchanger, TX valve, 4-way reversing valve, balancing valve, 2-way valve and motorized actuator, DX coil and R410a refrigerant piping.

Refrigeration Chassis


One 1″ MERV 8 filter and one disposable filter are included with the return air intake opening.


Access Panel

20-gauge steel construction finished in a durable enamel powder coat. Includes a hinged door for easy filter exchange.

Feature-VHP-Access Panel

Ball Valves

Manual shut-off valves.

Feature-VHP-Ball Valves

Water Hoses

Flexible supply and return lines isolate compressor noise from the building’s pipe system.


Include a Unilux HVAC Heat Pump in Your Next Development