2 Ton GrandAire 18.3 SEER2 R454B Side Discharge Inverter Heat Pump Condenser, W5H9V24AKAAA
The GrandAire W5H9V24AKAAA is the most efficient size in the W5H9V side discharge lineup. It's a 2 ton inverter heat pump rated 18.3 SEER2, 11.7 EER2, and 10.0 HSPF2, and it runs on R-454B refrigerant. Its inverter rotary compressor ramps between 7,200 and 27,000 BTU/h in cooling and 7,100 and 30,000 BTU/h in heating, so it matches output to the load instead of cycling on and off. At about 35 inches wide and just over 26 inches tall, the low-profile side discharge cabinet fits narrow side yards, townhome patios, and multi-family buildings where a tall top-discharge condenser won't. It pairs with the matched GrandAire WCVL245CB variable speed air handler for a complete high-efficiency split system.
Is a 2 Ton Heat Pump the Right Size?
A 2 ton heat pump suits smaller homes, condos, apartments, additions, and well-insulated spaces with a modest heating and cooling load. Because the W5H9V24AKAAA's inverter compressor can slow down to about 7,200 BTU/h, it runs long, quiet, low-speed cycles that improve dehumidification and comfort in small spaces that a single-stage unit would short-cycle.
Choose the size from a proper heat-loss/heat-gain calculation, not square footage alone. Insulation, window area, duct location and leakage, sun exposure, local climate, and how many people live there all affect the load. Grandaire rates heating at 21,600 BTU/h at 5°F for this size, which makes it a solid option in colder areas, especially paired with a WCVL heat strip.
Ideal for: Condos, townhomes, apartments, small single-family homes, garage conversions, and additions that need efficient year-round heating and cooling in tight outdoor spaces.
Need more capacity? Step up to the 3 Ton GrandAire 17.4 SEER2 Inverter Heat Pump, W5H9V36AKAAA for mid-size homes with a larger heating and cooling load.
Recommended applications are general guidelines only. Actual system requirements depend on insulation, climate, duct design, window area, and occupancy. Request free sizing assistance, contact Budget Heating, or call 813-885-7999.
What's Included
| Outdoor Heat Pump | W5H9V24AKAAA — 2 Ton Side Discharge Inverter Heat Pump |
|---|---|
| Matched Air Handler | WCVL245CB Variable Speed Air Handler (sold separately) |
| Efficiency | 18.3 SEER2 / 11.7 EER2 / 10.0 HSPF2 |
| Capacity Range | Cooling 7,200–27,000 BTU/h; Heating 7,100–30,000 BTU/h (21,600 BTU/h at 5°F) |
| Refrigerant | R-454B, factory charged for 24.6 ft of line set |
| Compressor | Inverter Rotary Compressor |
| Electrical | 208/230V, Single Phase, 60 Hz — MCA 19, MOP 20 |
| Line Connections | 3/8" Liquid, 3/4" Gas — Flare |
| Dimensions / Weight | 35.04" W x 13.46" D x 26.50" H — 102.29 lb |
This listing is for the W5H9V24AKAAA outdoor heat pump only. Grandaire publishes it as a matched system with the WCVL245CB air handler, which has an electronic expansion valve on each side and adaptive controls that work together to modulate capacity. A standard chassis heater and crankcase heater protect the unit in cold weather.
Heat Pump & Matched Air Handler Features
W5H9V24AKAAA Side Discharge Inverter Heat Pump
- Highest efficiency in the W5H9V line at 18.3 SEER2 and 10.0 HSPF2
- Inverter rotary compressor modulates from 7,200 to 27,000 BTU/h in cooling
- Low-profile side discharge cabinet only 26.5" tall
- Heats down to -22°F outdoor ambient and cools up to 122°F
- Outdoor sound level of 60 dBA
- Electronic expansion valve (EXV) metering
- Standard chassis heater and crankcase heater
- Up to 164 ft of total piping and 82 ft of height difference
WCVL245CB Matched Air Handler (sold separately)
- Compact 17.5" wide multi-position cabinet
- Constant-airflow ECM 2.0 blower up to 0.80 in. W.C. external static
- All-aluminum evaporator coil with EEV metering
- Runs on 115V or 208/230V power
- Accepts 5kW, 10kW, or 15kW GrandAire heat strips
- Indoor sound as low as 28 dBA
- Works with a 24V thermostat or a GrandAire wired controller
- 10-year parts warranty
Specifications & Manuals
Product documentation includes the matched system submittal, parts breakdown, installation instructions, and service manual for the GrandAire W5H9V side discharge heat pump series.
Frequently Asked Questions
Which air handler is matched with the W5H9V24AKAAA?
Grandaire's submittal pairs this 2 ton heat pump with the WCVL245CB variable speed air handler. The two units share electronic expansion valve metering and adaptive controls as a matched system.
How does the 2 ton W5H9V compare in efficiency to the larger sizes?
At 18.3 SEER2 and 10.0 HSPF2, the 2 ton is the most efficient size in the W5H9V lineup. The 3, 4, and 5 ton models step down to 17.4, 16.5, and 16 SEER2.
How much heat does it produce when it's 5°F outside?
Grandaire rates the W5H9V24AKAAA at 21,600 BTU/h of heating at 5°F outdoor temperature, and the unit keeps heating down to -22°F.
How much line set does the factory refrigerant charge cover?
The unit ships with 74.08 oz of R-454B, which covers up to 24.6 ft of piping. Beyond that, add 0.7 oz per foot, up to a maximum of 164 ft of total piping.
What breaker size does the W5H9V24AKAAA require?
The outdoor unit runs on 208/230V single-phase power with a minimum circuit ampacity of 19 and a maximum overcurrent protection of 20 amps. Always confirm against the unit nameplate and local code.
Why choose a side discharge heat pump?
Side discharge units blow air out horizontally rather than straight up. Their low, slim cabinet fits narrow side yards, balconies, and spots under windows or overhangs where a tall top-discharge condenser won't fit.
W5H9V24AKAAA, WCVL245CB Submittal SheetGrandAire W5H9V24 Parts ListGrandAire W5H9V Installation InstructionsGrandAire W5H9V Service Manual
