• Compressors — 4,679

Compressor maps by refrigerant: R410A 625, R22 557, R404A 467, R407C 432, R134a 400, R452A 270, R454B 253, R449A 251, R448A 250, R513A 225, R407A 196, R407F 196, R454C 152, R455A 152, R454A 93, R452B 82, R32 69, R1234ze(E) 8, R245fa 1.

Danfoss compressor ranges

Each range on a page of its own: every model code with its refrigerants, frequencies and ratings, and every model a page.

• Danfoss MLZ — 1,528
• Danfoss MTZ — 1,060
• Danfoss LLZ — 216
• Danfoss SZ — 204
• Danfoss HRH — 193
• Danfoss DSH — 174
• Danfoss PSH — 174
• Danfoss VZH — 118
• Danfoss HRM — 106
• Danfoss MT — 106
• Danfoss NTZ — 104
• Danfoss SH — 81
• Danfoss SM — 69
• Danfoss HRP — 66
• Danfoss HLJ — 63
• Danfoss DCJ — 60
• Danfoss DSF — 55
• Danfoss HLH — 49
• Danfoss MLM — 37
• Danfoss HLM — 29
• Danfoss HLP — 26
• Danfoss HCJ — 23
• Danfoss VLZ — 22
• Danfoss VTZ — 21
• Danfoss SY — 17
• Danfoss HCM — 15
• Danfoss HCP — 11
• Danfoss VZF — 9
• Danfoss DSG — 8
• Danfoss VCH — 7
• Danfoss CH — 5
• Danfoss VCZ — 4
• Danfoss VRJ — 3
• Danfoss VSH — 3
• Danfoss WSH — 3
• Danfoss DCF — 2
• Danfoss PSF — 2

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Components

Showing 601–624 of 4,679

How the model reads against Danfoss' data

Danfoss compressor maps converted from the maker's own selection database	4 677 maps (186 variable-speed with a step per rated speed, 4 427 with a mass-flow set); 553 nomenclature maps; 400 coefficients against the report	the VZH052's 400 coefficients identical to the report's; eighteen family medians between 0.95 and 1.053 of their model number, 543 of the 553 within 10 % (the ten outside are the smallest Maneurop recips, whose numbers are size codes); the closure median on every family between 0.994 and 1.049 (the R407C scrolls at the top, about 5 % over; nearly every other family within 1 %) over 4 427 sets, the three sets that disagree withheld, and the thirteen HHP heat-pump maps left out because their capacity set is a heating capacity (their closure reads 0.73–0.78, and ṁ·Δh + P reproduces it to 3 %); the polynomials substituted exactly, never refitted
Part-load interpolation between published compressor steps	the envelope between 16 steps	0.04 % mean, 0.21 % worst between the knots
A data centre's cooling loop as a heat source: the water-source heat pump against the same machine on air	a full Seattle year and one winter week, both sources	the same 55.2 MWh into the radiators either way; 7.6 MWh of electricity on the loop against 17.9 on air (seasonal COP 7.3 against 3.1 — the inverter's published steps are what the loop-source machine spends most of the year on, at part speed near its best point), and the chiller 51.2 against 56.2 MWh for the 48.5 MWh the heat pump took off the loop — the site 100.5 against 115.8 MWh, 13 % (re-read on 3 Oct 2026: the chiller now holds its envelope's lowest condensing temperature in mild weather, where it had read an extrapolated COP, and the site saving was 15 %). The ring conserves within 2 % (CRAH duty = heat pump take + chiller duty) with the one-hour lag, both plants converge every hour, and the north floor is held to 8 unmet hours where the air-source machine leaves it 15. Before the high-pressure cutout (the row below) the air-source variant failed 705 hours a year. What the guard cannot say: the paper reports no seasonal COP and no per-kilowatt figure, so the machine is the catalog map on both sides and only the arrangement is the anchor. (Until 4 Sep 2026 the plant was a Copeland ZP91KCE run as a flat-scaling inverter emulation and read 9.9 against 19.2 MWh, COP 5.6 / 2.9, the site 12 % down.)
A maker's inverter scroll read from its own selector: the Danfoss VZH052CJ	eighteen speeds; three selector readings at te −10 / tc 30 (1 002, 3 000, 6 000 rpm); four envelope points for the displacement; the rating point and a grid for the cycle closure	capacity and power at each of the three speeds within 0.3 % of the selector's own rows; the three parameter sets close the refrigeration cycle within 0.5 % at the rating point and 3 % across the grid, each step's own sets within 1 %; the implied volumetric efficiency sits inside the scroll band at every envelope point (the same band the VZH088 entry is held to). The map carries the maker's 65 °C condensing ceiling as a polygon, which is what the cutout rule below reads

From the validation page; every row is held by a test.

Worked cases that run Danfoss machines

• The server hall is the boiler — Seattle

Listed from published data with the source named on every entry; a listing's figures are the manufacturer's, the model that runs them is ours. Solver results never depend on who has claimed what.