3 Ton Rheem 14.3 SEER2 R454B Heat Pump Short Apartment/Condo Type System RP14AY36AJ2NA, RB2TY3621STANMJB
This is the largest system in Rheem's short apartment/condo heat pump lineup. It pairs the RP14AY36AJ2NA two-stage R-454B heat pump with the RB2TY3621STANMJB low-boy air handler and delivers 36,000 BTU of nominal heating and cooling at an AHRI-certified 14.3 SEER2 (AHRI #216010782). It brings full 3 ton capacity to closets and platforms only about 35 inches tall. That makes it a practical upgrade for three-bedroom condos, large apartments and townhome-style units, with factory electric heat up to 10 kW for dependable backup in cold weather.
Is a 3 Ton Heat Pump System the Right Size?
Choose 3 tons when your load calculation comes in near 36,000 BTU per hour. That is typical of three-bedroom condos, large corner units, and homes with a lot of glass or cathedral ceilings. It is the top capacity offered for this low-boy setup, so save it for units that need it.
Installing a 3 ton system where 2.5 tons would do can cause short cycling and higher humidity. Count exterior walls, window direction, insulation quality and occupants, then verify your numbers with the BTU and tonnage calculator or ask our team for a free sizing review.
Ideal for: Three-bedroom condos, large apartments and townhome units with short mechanical closets, and replacement of existing 3 ton low-boy air handlers.
Need more capacity? This short system tops out at 3 tons. For larger loads, consider the 3.5 Ton Rheem 14.3 SEER2 R454B Two Stage Heat Pump System RP14AY42AJ2NA, RH2TY4821STANNJ, which uses a full-height multi-position air handler.
Recommended system sizes are general guidelines only. Actual requirements depend on climate, insulation, unit location within the building, window exposure, occupancy, and installation conditions. Request free sizing assistance, contact Budget Heating, or call 813-885-7999.
What's Included
| Outdoor Heat Pump | RP14AY36AJ2NA — 3 Ton Two-Stage Endeavor® Line Classic® Series Heat Pump |
|---|---|
| Indoor Air Handler | RB2TY3621STANMJB 21" Wide Low-Boy Air Handler with Factory Electric Heat (5, 7 or 10 kW) |
| Application | Short Apartment / Condo Split System Heat Pump, Heating & Cooling |
| Refrigerant | R-454B (Low-GWP A2L) |
| Compressor | Two-Stage Scroll Compressor |
| Efficiency | 14.3 SEER2, AHRI Certified #216010782 |
| Electrical | 208/230V, Single Phase, 60 Hz Heat Pump (20 MCA / 30 Amp Max Overcurrent) |
| Air Handler Electrical | 208-240V, Single Phase, 60 Hz |
The RP14AY36AJ2NA moves up to a 35" tall cabinet on the same 33-3/4" square base as the 2.5 ton unit. Its 24" fan moves 4,077 CFM, the most airflow of the three short systems, across a 19.5 sq. ft. coil, and it still carries a 72 dBA sound rating. It ships with 94 oz. of R-454B for 15 ft. of line set and connects with a 3/4" suction and 3/8" liquid line. A 25 ft. 3/4 & 3/8 copper line set is offered on this page. Indoors, the RB2TY3621STANMJB's 1/2 HP ECM blower is field-set for 3 ton airflow, and 10 kW factory heat is available. The parts are also sold individually as the RP14AY36AJ2NA heat pump condenser and the RB2TY3621STANMJB10 short air handler with 10 kW heat.
Heat Pump & Air Handler Features
RP14AY36AJ2NA Outdoor Heat Pump
- Two-stage scroll compressor sized for 3 ton heating and cooling
- 4,077 CFM outdoor fan across a 19.5 sq. ft. condenser coil
- 72 dBA sound rating despite the higher capacity
- 35" tall cabinet on a 33-3/4" x 33-3/4" base
- Inverted reversing valve with gravity-assist shifting
- PlusOne® expanded valve space and 15" triple service access
- Internal pressure relief valve and internal thermal overload
- Optional crankcase heater, hard start kit and sound cover accessories
- Long line and low ambient capability with approved kits
- 10-year conditional parts warranty with registration
RB2TY3621STANMJB Low-Boy Air Handler
- Factory heat in 5, 7 or 10 kW, with circuit breakers standard
- 1/2 HP five-speed constant-torque ECM motor with two-stage airflow
- Field-selectable airflow, set for 3 ton operation
- Short 35" cabinet height for low closets and platforms
- Slide-out blower design for easy service and maintenance
- Tab-lock blower housing with integrated heaters, controls, motor and blower
- Factory-installed A2L refrigerant sensor and mitigation board
- TXV metering device and Multiflex indoor coil
- Rugged steel cabinet with 1" foil-faced insulation
- Field-convertible for upflow, downflow or horizontal installation
Specifications & Manuals
Product documentation for this 3 ton short system includes heat pump and air handler technical specifications, installation instructions, RP14AY product literature, and Rheem warranty coverage for selection, installation, and service.
Frequently Asked Questions
How do I know if a 3 ton short heat pump is the right size?
Run a load calculation for the unit. If the result is near 36,000 BTU, the RP14AY36AJ2NA / RB2TY3621STANMJB fits. If it lands closer to 30,000 BTU, the smaller system will usually control humidity better.
What's the difference between this 3 ton system and the 2.5 ton RP14AY30AJ2NA short system?
Both use the same RB2TY3621STANMJB air handler. The 3 ton RP14AY36AJ2NA has a taller 35" outdoor cabinet and a 4,077 CFM fan. It is rated at 14.3 SEER2, versus 15.2 SEER2 for the 2.5 ton RP14AY30AJ2NA short system.
What size line set does the RP14AY36AJ2NA need?
The RP14AY36AJ2NA has a 3/4" suction and 3/8" liquid connection, and its factory charge covers 15 ft. of line. For longer runs, follow the installation instructions for additional charge and long-line requirements.
Which RB2TY3621STANMJB heat option is best for colder climates?
The 10 kW model (RB2TY3621STANMJB10) gives the most backup heat, about 7.5/10.0 kW at 208/240V. It needs a 49/56 amp minimum circuit ampacity and a 50/60 amp maximum protector. The 5 and 7 kW options suit milder climates and smaller electrical services.
How easy is the RB2TY3621STANMJB to service?
Rheem designed it with a slide-out blower, a tab-lock blower housing that holds the heaters, controls and motor, and field electrical provisions on both sides of the cabinet. Technicians can reach the parts that need regular service without removing the air handler.
What warranty covers the RP14AY36AJ2NA and RB2TY3621STANMJB?
Both carry Rheem's 10-year conditional parts limited warranty when the equipment is registered. See the Rheem warranty document above for complete terms and registration requirements.
RP14AY Technical SpecificationsRP14AY Installation InstructionsRP14AY BrochureRB2TY Technical SpecificationsRB2TY Installation InstructionsRheem Warranty Certificate
