1.5 Ton DiamondAir 15.2 SEER2 R-410A Heat Pump System – D1418HCL2 & D1524HAEAL2
This DiamondAir 1.5 ton system raises efficiency to 15.2 SEER2 by pairing the D1418HCL2 R-410A heat pump with the D1524HAEAL2, a D15 Series air handler with a 5-speed ECM blower motor. The adjustable ECM blower lets the installer match airflow to the ductwork. It is a smart closeout choice for homeowners, landlords and contractors who want higher-efficiency 18,000 BTU/h heating and cooling for a condo, small home or addition.
Is a 1.5 Ton Heat Pump System the Right Size?
This system delivers a nominal 18,000 BTU/h, so it is best suited to smaller conditioned spaces with a light heating and cooling load. Base the size on the actual load. Tight construction, good attic insulation and shaded windows can let 1.5 tons cover more area, while poor insulation or leaky ducts reduce what it can handle. Run the numbers with our tonnage and BTU calculator, then confirm with a professional Manual J.
Airflow is the other half of sizing. DiamondAir recommends speed tap 3 on the D1524HAEAL2 for a 1.5 ton outdoor unit, which delivers 648 SCFM at 0.3" w.c. The factory default is tap 4, so the installer should check and set the tap at startup. Ductwork that is undersized or restrictive raises static pressure and lowers delivered airflow.
Ideal for: Efficiency-minded condo and townhome owners, small single-family homes, finished basements and additions with ductwork, and landlords upgrading 1.5 ton rental units.
Prefer the lowest price in this size? The 1.5 Ton DiamondAir 14.3 SEER2 D1418HCL2 & D1418HAEAL2 Heat Pump System uses the same outdoor unit with a PSC air handler.
Recommended applications are general guidelines only. Actual system requirements depend on insulation, climate, duct design, window load, occupancy and desired indoor temperature. Request free sizing assistance, contact Budget Heating, or call 813-885-7999.
What's Included
| Outdoor Heat Pump | D1418HCL2 — 1.5 Ton R-410A Heat Pump Condenser |
|---|---|
| Indoor Air Handler | D1524HAEAL2 D15 Series Multi-Position ECM Air Handler |
| Application | Residential Ducted Split System Heat Pump — Heating & Cooling |
| Refrigerant | R-410A |
| Compressor | LG Single-Stage Scroll Compressor |
| Backup Heat | Electric Heat Strip Selected at Checkout (5, 7.5 or 10 kW) |
| Electrical | 208/230V, Single Phase, 60 Hz Heat Pump |
| Air Handler Electrical | 208/230V, Single Phase |
The D1524HAEAL2 is rated for 2 tons, and DiamondAir's airflow table supports it with a 1.5 ton outdoor unit. Its 1/3 HP ECM blower runs at 1,050 rated RPM and has a 0.8" w.c. external static pressure rating. The cabinet is 41-3/8" H x 18-1/8" W x 20-1/2" D and weighs 101 lbs, and its 3/8" liquid and 3/4" suction connections match the D1418HCL2 directly. Outdoors, the condenser carries a 5 lb 4 oz R-410A charge and needs a 13.0 MCA / 20 amp circuit. Components are also available separately: the D1418HCL2 heat pump and the D1524HAEAL2 ECM air handler.
Heat Pump & Air Handler Features
D1418HCL2 Outdoor Heat Pump
- 18,000 BTU/h nominal heating and cooling with an LG scroll compressor
- 15.2 SEER2 when matched with the D1524HAEAL2
- Rated to operate in heating from 5°F to 86°F outdoors
- Compact 24-15/16" H x 23-5/8" W x 23-5/8" D cabinet, 137 lbs
- 72 dB sound power rating
- Factory-installed compressor crankcase heater
- Sweat service valves with easy-access gauge ports
- Steel louver coil guard protects the condenser coil
- Optional filter drier available as an accessory
- AHRI certified and ETL listed
D1524HAEAL2 ECM Air Handler
- 1/3 HP multi-speed ECM blower motor with five speed taps
- Tap 3 recommended for 1.5 ton outdoor units
- 0.8" w.c. rated external static pressure
- All-aluminum tube and fin evaporator coil
- Factory-sealed cabinet with 2% or less leakage at 1.0" w.c.
- Installs upflow, downflow or horizontal left/right
- Horizontal and vertical condensate drain pans standard
- Slide-out blower and coil for easier service
- Electrical connections can exit the top or either side
- Accepts EHK heat strips in 5, 7.5 and 10 kW
Specifications & Manuals
Use the D15 air handler documents for ECM speed tap selection, airflow at each static pressure, and heater kit circuit requirements, along with D14 heat pump specs and the DiamondAir warranty terms.
Frequently Asked Questions
Why does a 1.5 ton system come with a 2 ton D1524HAEAL2 air handler?
DiamondAir's airflow data supports the D1524HAEAL2 with 1.5 ton outdoor units. This pairing gives the system its 15.2 SEER2 rating.
Which ECM speed tap should be used with the D1418HCL2?
DiamondAir recommends tap 3 for a 1.5 ton outdoor unit. The air handler ships on tap 4, so the installer should change it at startup and confirm airflow against duct static pressure.
Can I use the 10 kW heat strip on any blower speed?
No. For the 7.5 kW and 10 kW kits, DiamondAir requires a minimum heating blower speed of tap 3. The 5 kW kit can run on any of the five taps.
What electrical circuits does this system need with a 10 kW heat strip?
With the 10 kW EHK-10A kit, the D1524HAEAL2 calls for 55 MCA and a 60 amp breaker at 240V (48.1 MCA / 50 amps at 208V). The D1418HCL2 needs its own 13.0 MCA / 20 amp circuit.
Is an ECM air handler worth it over a PSC model?
In this pairing, the ECM-equipped D1524HAEAL2 is what raises the rating from 14.3 to 15.2 SEER2 compared with the PSC D1418HAEAL2 system. It also offers five speed taps instead of three for more precise airflow setup.
How much clearance does the D1524HAEAL2 need for service?
DiamondAir specifies 25" of clearance in front of the air handler for filter and coil maintenance. Allow for this when installing in a closet or attic.
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D1418-D1460HCL2 SEER2 HP Condenser Install Manual
D1524-D1560HAEAL2 SEER2 Air Handler Tech Specs
