4 Ton DiamondAir 14.3 SEER2 R32 Central System D1448ACL32A, D1448HAEAL32A
This DiamondAir system pairs the D1448ACL32A condenser with the D1448HAEAL32A multipoise air handler, AHRI certified at 14.3 SEER2 (#218350144). It runs on R-32, a low-GWP A2L refrigerant, and the air handler includes a factory-installed R-32 leak sensor that shuts down the compressor and electric heat if a leak is detected. It's cooling only, with electric heat kits from 5 kW up to 20 kW available.
Is a 4 Ton Air Conditioning System the Right Size?
A 4 ton system is often used in 4-bedroom homes around 2,100–2,500 sq. ft. as a general reference.
Duct design is critical at 4 tons. Pair a Manual J load calculation with a Manual D duct review before you buy.
Ideal for: 4-bedroom homes and larger open floor plans.
Need more capacity? Step up to the 5 Ton DiamondAir 13.8 SEER2 R32 Central System D1460ACL32A, D1460HAEAL32A for the largest loads.
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 | D1448ACL32A — 4 Ton DiamondAir R32 Air Conditioner |
|---|---|
| Indoor Air Handler | D1448HAEAL32A R32 Multipoise Air Handler (22" Wide) |
| Application | Cooling-Only Central Air Split System (Electric Heat Kit Optional) |
| Refrigerant | R-32 (Low-GWP A2L Refrigerant) |
| Compressor | Single-Stage Scroll Compressor |
| Metering Device | Piston (Fixed Orifice) Metering at Indoor Coil, Field Replaceable |
| Electrical | 208/230V, Single Phase, 60 Hz Condensing Unit — 23.4 MCA / 40A Max Overcurrent |
| Air Handler Electrical | 208/230V, Single Phase — 3.76 MCA / 6A MOP (Blower Only, per Spec Sheet) |
The D1448ACL32A condenser is 32-7/8" tall on a 29-1/8" x 29-1/8" base and ships at 214 lbs, with a 65 dB(A) sound level. The D1448HAEAL32A air handler is 53-1/8" tall, 22" wide and 24-1/2" deep and ships at 181 lbs. Complete the install with compatible thermostats and copper line sets and fittings.
Condensing Unit & Air Handler Features
D1448ACL32A Outdoor Condensing Unit
- 45,000 BTU/h rated cooling capacity
- Scroll compressor (17.5 RLA)
- 65 dB(A) sound level
- Copper tube and aluminum fin condenser coil
- 1/3 HP PSC condenser fan motor
- 3/8" liquid and 7/8" suction line connections
- Cooling operation from 55°F to 120°F outdoor ambient
- Operates on 187–253V, 208/230V single phase
- Low-GWP R-32 refrigerant
- 5-year parts limited warranty (licensed installation required)
D1448HAEAL32A R32 Multipoise Air Handler
- Multipoise: upflow, downflow, horizontal left or right
- Factory-installed R-32 refrigerant leak sensor
- 2/5 HP multi-speed PSC direct drive blower motor
- 11" x 11" metal centrifugal blower wheel
- Aluminum tube and fin evaporator coil
- 1,450 CFM nominal airflow at 0.5" external static
- 3/4" FPT primary and auxiliary drain connections
- 19-1/2" supply duct opening
- External return filter required (not factory installed)
- Field-installed electric heat kits, 5 kW up to 20 kW
Specifications & Manuals
Documentation includes DiamondAir R32 condenser and air handler specifications, condenser, air handler and heat strip installation manuals, piston replacement instructions and the DiamondAir limited warranty.
Frequently Asked Questions
Why is the 4 ton air handler larger than the smaller sizes?
The D1448HAEAL32A moves up to a 22" wide, 53-1/8" tall cabinet to deliver 1,450 CFM. The 1.5 through 3.5 ton units are 19-11/16" wide and 45-3/4" tall.
What suction line does the 4 ton D1448ACL32A need?
DiamondAir lists a 7/8" suction and 3/8" liquid connection for the 4 ton condenser and air handler.
What warranty comes with this DiamondAir R-32 system?
DiamondAir provides a 5-year parts warranty from the installation date, with no registration required for equipment installed after July 1, 2024. A licensed HVAC technician must do the install.
How does this R-32 system compare to the R-410A DiamondAir 4 ton system?
The 4 ton DiamondAir R-410A system D1448ACL2, D1448HAEAL2 is the earlier version. This R-32 match uses a refrigerant with a much lower global warming potential and adds a factory-installed leak sensor in the air handler.
Is there a 4 ton DiamondAir R-32 heat pump system?
Yes. The 4 ton DiamondAir R-32 heat pump system D1448HCL32A, D1448HAEAL32A uses the same air handler and adds heating from the outdoor unit.
How should the D1448HAEAL32A condensate drain be piped?
DiamondAir calls for a 3" trap on the primary drain as close to the unit as possible, with the auxiliary drain run where an overflow will be noticed.
DiamondAir R32 A/C Condenser Technical Specifications
DiamondAir R32 SEER2 Air Handler Technical Specs
DiamondAir R32 SC, HP Condenser Installation Manual
D1418-D1460HAEAL32A R32 Air Handler Installation Manual
D1418-D1460HAEAL32A R32 Heat Strip Installation Manual
R32 Piston Replacement and Installation Instructions
