I. Positioning
The HLH/HLJ series is Danfoss H-series line of scroll compressors optimized for R410A refrigerant, targeting light-commercial air conditioning. Covering four capacity levels—HLH061, HLJ072, HLJ075, HLJ083—with nominal ratings from 5.1 HP to 6.9 HP. Core features include compact lightweight design, low-noise operation, high energy efficiency, and long-term reliability. Widely used in commercial A/C, heat pump systems, and light-commercial refrigeration. The Danfoss H-series delivers exceptional performance, low noise levels, and durability, available in single or tandem configurations across R410A, R407C, and R22 refrigerants from 2.5 to 10 tons. Universal dimensions, mounting feet, and connections make it a comfortable choice for both existing and new residential applications.
| Feature Dimension | Description |
| Power Range | 5.1 HP – 6.9 HP |
| Refrigerant | R410A |
| Power Supply | 3φ, 380-415V/50Hz, 460V/60Hz |
| Application Duty | Light-commercial A/C & heat pump (HBP) |
| Core Positioning | Mainstream light-commercial A/C, compact & efficient |
II. Full Series Parameter Comparison Table
| No. | Model | Nominal HP | Displacement (cm³) | Cooling Capacity (W) | Cooling (Btu/h) | Input Power (kW) | COP | LRA (A) | RLA (A) | Net Weight (kg) | Total Height (mm) |
| 1 | HLH061T4 | 5.1 | 57.78 | 14,570 | 49,700 | 4.53 | 3.22 | 82 | 9.6 | 37 | 435 |
| 2 | HLJ072T4 | 5.8 | 67.97 | 17,630 | 60,150 | 5.51 | 3.20 | 87 | 12.2 | 37 | 435 |
| 3 | HLJ075T4 | 6.3 | 70.79 | 18,600 | 63,490 | 5.77 | 3.22 | 100 | 11.5 | 37 | 455 |
| 4 | HLJ083T4 | 6.9 | 78.08 | 20,420 | 69,690 | 6.28 | 3.25 | 100 | 13.0 | 37 | 455 |
50Hz condition, R410A refrigerant.
III. Detailed Overview
Feature: The HLH/HLJ series adopts a fully hermetic scroll structure with precision-machined scroll profiles that reduce gas leakage and improve compression efficiency. All models come standard with internal overload protection. IP22 rating, max high-side pressure 46.1 bar, low-side 31.1 bar. Suction connection 7/8" (ODF braze), discharge 1/2". Factory-charged with PVE oil (reference 320HV), oil charge 1.57 L, max refrigerant charge 5.44 kg. Compressor diameter 184 mm, width 239 mm, brazed connections.
Advantage:
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Complete power ladder. Four models from 14.6 kW to 20.4 kW cooling (5.1–6.9 HP), COP 3.20–3.25. HLJ083T4 leads at COP 3.25.
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Compact lightweight. All models weigh just 37 kg, height 435–455 mm, diameter only 184 mm—clear space advantage in their power class.
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Dual-frequency wide voltage. 3φ 380-415V/50Hz and 460V/60Hz, 2900 rpm (50Hz) / 3500 rpm (60Hz).
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Universal design. Common dimensions, mounting feet, and connections across the H-series (2.5–10 tons), simplifying system design and retrofits.
Benefit: For OEMs, the 14.6–20.4 kW range precisely covers 5.1–6.9 HP applications, eliminating oversizing/undersizing waste. For contractors, 37 kg weight and 184 mm diameter reduce integration difficulty and installation cost; universal interfaces minimize piping modifications. For end users, COP 3.20–3.25 lowers annual electricity bills; R410A compliance and scroll longevity ensure long-term economy.
IV. Application Scenario Quick-Selection Guide
| Application Scenario | Recommended Model | HP | Key Advantage |
| Light Commercial A/C | HLH061T4 | 5.1 | 14.6kW, COP 3.22 |
| Commercial A/C / Heat Pump | HLJ072T4 | 5.8 | 17.6kW, COP 3.20 |
| Commercial A/C / Chiller | HLJ075T4 | 6.3 | 18.6kW, COP 3.22 |
| Large Commercial A/C / Heat Pump | HLJ083T4 | 6.9 | 20.4kW, COP 3.25 (highest) |
Selection Tip: 5.1 HP → HLH061T4, 5.8 HP → HLJ072T4, 6.3 HP → HLJ075T4, 6.9 HP → HLJ083T4.
V. Frequently Asked Questions (FAQ)
Q1: What refrigerant and oil does the HLH/HLJ series use?
R410A refrigerant, factory-charged with PVE oil (reference 320HV), oil charge 1.57 L. Max refrigerant charge 5.44 kg.
Q2: What is the maximum working pressure?
Max high-side pressure (PS): 46.1 bar; low-side: 31.1 bar. IP22 protection.
The Compact Power Index (CPI): How HLH/HLJ Redefines the 5–7 HP Class
In the compressor world, size and weight aren't just specs—they're installation costs, shipping fees, and equipment design constraints. We ran every HLH/HLJ model through our Compact Power Index, measuring two brutal metrics:
| Model | Cooling (W) | Weight (kg) | W/kg | Volume (dm³)* | W/dm³ |
| HLH061T4 | 14,570 | 37 | 394 | ~11.6 | 1,256 |
| HLJ072T4 | 17,630 | 37 | 476 | ~11.6 | 1,520 |
| HLJ075T4 | 18,600 | 37 | 503 | ~12.1 | 1,537 |
| HLJ083T4 | 20,420 | 37 | 552 | ~12.1 | 1,688 |
*Volume = π × (92mm)⊃2; × height / 1,000,000. Approximate.
What these numbers mean:
W/kg (Cooling per Kilogram): At 552 W/kg, the HLJ083T4 delivers more cooling per pound of compressor than nearly any同级 scroll in its class. Compare that to typical 6–7 HP reciprocating units at ~300 W/kg—you're looking at a 45% efficiency advantage in pure power-to-weight.
W/dm³ (Cooling per Cubic Decimeter): At 1,688 W/dm³, the HLJ083T4 packs nearly 1.7 kW of cooling into every liter of compressor volume. That's the difference between a cramped outdoor unit and one with room to breathe—easier service access, better airflow, longer coil life.
The bottom line for your business:
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OEMs: 37 kg means smaller footprints, lighter outdoor units, lower shipping costs.
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Contractors: One person can position and mount without a hoist. Universal H-series mounting = no new brackets.
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End users: More cooling from less space = flexible equipment room design.
Ready to see how this fits your system? Send us your current compressor model and available footprint. We'll confirm the optimal HLH/HLJ match and provide volume pricing within 24 hours.
III. Detailed Overview
