1.5 Ton Rheem Select 14.3 SEER2 R454B Single Stage Central System WSA14AY18AJ1NA, RH1AY2417STANNJ
This Rheem Endeavor® Line Select™ Series iC system pairs the small footprint WSA14AY18AJ1NA condenser with the RH1AY2417STANNJ single-stage-airflow air handler, AHRI certified at 14.3 SEER2 (#217486290). The condenser sits on a compact 23.63" x 23.63" pad, which suits narrow side yards and tight setbacks. The RH1AY keeps the indoor side simple and budget friendly. It uses low-GWP R-454B with Rheem's PlusOne® Refrigerant Detection System™. It's cooling only, with optional Rheem electric heat strips.
Is a 1.5 Ton Air Conditioning System the Right Size?
A 1.5 ton system delivers 18,000 BTU/h of nominal cooling. It's a common fit for condos, townhomes and small single-story homes, roughly 600–900 sq. ft. as a loose reference. The home's heat gain decides the real size.
Big windows, thin insulation and leaky ducts can push a small home past 1.5 tons, while a shaded, well-sealed home may need less. A Manual J load calculation prevents short cycling from oversizing.
Ideal for: Townhomes, condos and small homes with limited pad space and a tight budget.
Need more capacity? Step up to the 2 Ton Rheem Select 14.3 SEER2 R454B Single Stage Central System WSA14AY24AJ1NA, RH1AY2417STANNJ, which uses the same air handler.
Recommended home sizes are general guidelines only. Actual system requirements depend on insulation, climate, windows, ductwork, occupancy and a proper load calculation. Request free sizing assistance, contact Budget Heating, or call 813-885-7999.
What's Included
| Outdoor Condensing Unit | WSA14AY18AJ1NA — 1.5 Ton Rheem Select Small Footprint R454B Air Conditioner |
|---|---|
| Indoor Air Handler | RH1AY2417STANNJ Single-Stage Airflow Multipoise Air Handler (17.5" Wide) |
| Application | Cooling-Only Central Air Split System (Electric Heat Kit Optional) |
| Refrigerant | R-454B (Low-GWP A2L Refrigerant) |
| Compressor | Single-Stage Scroll Compressor |
| Metering Device | Factory-Installed Expansion Valve on Indoor Coil (TXV) |
| Electrical | 208/230V, Single Phase, 60 Hz Condensing Unit — 12 MCA / 15A Max Overcurrent |
| Air Handler Electrical | 208/240V, Single Phase — 3 MCA / 15A Max Overcurrent (No Heat Kit) |
The WSA14AY18AJ1NA condenser is 32.25" tall on a 23.63" x 23.63" base and weighs 162 lbs (operating), with an 18" three-blade fan and a 76 dBA sound rating. The RH1AY2417STANNJ air handler is 17.5" wide and 42.5" tall and weighs 92 lbs, with a 1/3 HP constant torque motor. Complete the install with compatible thermostats and copper line sets and fittings.
Condensing Unit & Air Handler Features
WSA14AY18AJ1NA Outdoor Condensing Unit
- 18,000 BTU/h nominal cooling capacity
- Single-stage scroll compressor
- 76 dBA weighted sound power rating
- Optimized 7 mm coil design for airflow and heat transfer
- 103 oz. factory R-454B charge for 15 ft. of line set
- 18" three-blade fan with 1/7 HP motor (2,036 CFM)
- 3/8" liquid and 3/4" suction front-seating service valves
- One-piece drawn and painted base pan lifts the coil off the pad
- External gauge ports and field-installed filter drier
- 10-year conditional parts limited warranty (registration required)
RH1AY2417STANNJ Single-Stage Air Handler
- Single-stage airflow with a constant torque (ECM) motor
- 1/3 HP multi-speed motor, 600/800 CFM nominal airflow
- PlusOne® Refrigerant Detection System™ with factory-installed A2L sensor
- Aluminum fins bonded to internally grooved aluminum tubing
- 4-way convertible: upflow, downflow, horizontal left or right
- 1.0" foil-faced cabinet insulation for quieter operation
- Cabinet air leakage under 2% at 1" H₂O (ASHRAE 193)
- Slide-out blower and four-leg motor mount for easy service
- Front refrigerant and drain connections
- Field-installed heater kits in 5, 8 and 10 kW with UL/cUL-listed breakers
Specifications & Manuals
Documentation includes WSA14AY electrical, sound, dimensional and line-size data, condenser and air handler installation instructions, the WSA14AY brochure, RH1AY airflow and heater tables and the Rheem limited warranty.
Frequently Asked Questions
How does this RH1AY version compare to the WSA14AY18 system with the RH2TY?
The WSA14AY18AJ1NA, RH2TY2417STANNJ system uses the same condenser with a two-stage-airflow air handler and is rated 15.2 SEER2. This RH1AY match is 14.3 SEER2 and costs less up front.
Does a 14.3 SEER2 system meet the federal minimum in the Southeast?
Yes. The DOE minimum for split-system air conditioners under 45,000 BTU/h in the Southeast region is 14.3 SEER2, and this system is AHRI certified at exactly 14.3 SEER2.
Is the WSA14AY18 heavier than the standard WA14AY18 condenser?
Yes, slightly. Rheem lists the small footprint WSA14AY18 at 162 lbs operating, compared with 141 lbs for the WA14AY18. It trades a smaller pad for a taller 32.25" cabinet.
What compressor protection is built into the WSA14AY18AJ1NA?
Rheem lists an internal pressure relief valve and internal thermal overload as standard. High and low pressure controls (RXAB-A07 and RXAC-A07) are available as accessories.
Which start and timing accessories fit the WSA14AY18?
Rheem lists the SK-A1 compressor hard start kit and the RXMD-B01 compressor time delay as accessories for the WSA14AY18.
What size pad does the WSA14AY18AJ1NA need?
The cabinet base is 23.63" x 23.63", so a 24" x 24" or larger condenser pad works. Follow Rheem's clearance diagram for spacing from walls and other units.
WSA14AY Technical SpecificationsWSA14AY Installation InstructionsWSA14AY BrochureRH1AY Technical SpecificationsRH1AY Installation InstructionsRheem Warranty Certificate
