Bitzer HSK7451-70
German-engineered semi-hermetic reciprocating and screw compressors for industrial refrigeration.
Specifications
- Compression technology: Screw
- Configuration: Single
- Enclosure / drive: Semi-Hermetic
- Variable speed: Fixed-Speed
- Hazardous-area certification: No
- Product category: compressor
Qualified refrigerants & capacity
Capacity (kW) evaluated at standard conditions: ULT (-60/45 °C), LT (-35/45 °C), MT (-10/45 °C), HT (-5/45 °C).
| Refrigerant | ULT | LT | MT | HT |
|---|---|---|---|---|
| R134a | — | — | 65.52 | 82.36 |
| R22 | — | — | 107.39 | 131.21 |
| R404A | — | — | 104.3 | 128.42 |
| R407A | — | — | 100.69 | 124.15 |
| R407C | — | — | 97.93 | 121.57 |
| R407F | — | — | 109.24 | 134.1 |
| R448A | — | — | 104.73 | 128.7 |
| R449A | — | — | 104.05 | 127.83 |
| R454C | — | — | 93.11 | 114.54 |
| R507A | — | — | 105.9 | 130.3 |
Related Bitzer models
Frequently asked questions
What refrigerants does the Bitzer HSK7451-70 support?
The Bitzer HSK7451-70 is qualified for R134a, R22, R404A, R407A, R407C, R407F, R448A, R449A, R454C, R507A. Capacity values at standard ULT (-60/45 C), LT (-35/45 C), MT (-10/45 C), and HT (-5/45 C) conditions are listed in the table above for each refrigerant.
What is the cooling capacity of the Bitzer HSK7451-70?
Running on R407F, the Bitzer HSK7451-70 delivers 109.24 kW at MT, 134.1 kW at HT. Use the Benchmark tool to evaluate capacity at your exact SST/SDT and superheat conditions.
Can the Bitzer HSK7451-70 be retrofit to a lower-GWP refrigerant under EU F-Gas Regulation 2024/573?
Open the F-Gas Retrofit tool with this model pre-selected to see drop-in alternatives ranked by capacity match, COP, GWP, PFAS impact, and 2026/2030/2035 phase-out timeline.
What polynomial standard is the Bitzer HSK7451-70 performance data based on?
Capacity, power, and current polynomials follow EN 12900 for European-origin brands and AHRI 540 for North American brands. Coefficients are normalized into a common form for cross-brand comparison. Fit your own data in the Polynomial Fitter tool.