Home / Equipment prices / 4 ton / KUSXB481A
LG 4-ton 18 SEER2 heat pump system
LG 4 Ton 18 SEER2 High Efficiency Heat Pump Split System - R32 Inverter - Multi-Positional
Central heat pump (ducted split) High-efficiency / cold-climate (18+ SEER2) ENERGY STAR certified pairing Cold climate ENERGY STAR Most Efficient
Listed prices
| HVACDirect | $7,038 |
Captured Oct 24, 2026. Public online retail prices for the equipment only. Contractors typically buy through distributors at prices that are not published.
Installed benchmark estimate
Midpoint $20,124. REMDB replacement-cost regression for this system type, size and efficiency, restated in today's dollars. Method
Specifications
| Model numbers | KUSXB481A + KNSLB481A |
|---|---|
| Nominal capacity | 4 ton (48,000 BTU/h) |
| SEER2 | 18 |
| EER2 | 11.7 |
| HSPF2 | 9.4 |
| COP at 5°F | 1.8 |
| Heating capacity 5°F / 47°F | 38,500 / 50,000 BTU/h (77%) |
| Compressor | Continuously variable |
| Refrigerant | R-32 (GWP:675 | Lower GWP) |
| AHRI reference # | 215588580 |
| ENERGY STAR certified | 2026-04-17 |
| Rating source | EPA ENERGY STAR record for KUSXB481A + KNSLB481A (raw record; matched on outdoor + indoor model) |
Quoted this exact system? The model numbers on your quote should match the outdoor unit KUSXB481A and indoor unit KNSLB481A. A different indoor coil changes the certified rating. How to check an AHRI certificate
Other 4-ton systems
- Goodman GLZS4BA4810 Central heat pump (ducted split), 15.2 SEER2, $5,444
- Goodman GLZT7CA4810 Central heat pump (ducted split), 17.2 SEER2, $8,053
- Trane A5HL5048A1000A Central heat pump (ducted split), 16 SEER2, $4,643
- Gree FXU60HP230V1R32AO Central heat pump (ducted split), 19 SEER2, $6,990
- Goodman GLXS5BA4810 Central AC + gas furnace, 15.2 SEER2, $5,949
- Goodman GLZS4BA4810 Heat pump only (outdoor unit swap), 14.3 SEER2, $3,609