Hoffman SpectraCool Narrow air conditioners cross to the Pfannenberg DTS side mount series. The N-series is built for tight side panels, so this cross is about width as much as capacity. Both are compared below at the 95°F/95°F rating point.
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SpectraCool Narrow to Pfannenberg cross reference
| Model | Published BTU/hr | BTU/hr at 95/95 curve | Voltages | NEMA type | Pfannenberg cross |
|---|---|---|---|---|---|
| N16-01x6-Gxxx | 800/900 | 950 | 115/230 | 12, 3R, 4, 4X | DTS 3021/3031 |
| N17-01x6-Gxxx | 1,025 | 1,025 | 115/230/460 | 12 | DTS 3021/3031 |
| N17-02x6-Gxxx | 1,800 | 1,630/1,740/1,740 | 115/230/460 | 12 | DTS 3041 |
| N21-02x6-Gxxx | 2,000 | 1,980/1,900/1,900 | 115/230/460 | 12, 3R, 4, 4X | DTS 3041 |
| N28-04x6-Gxxx | 4,011/4,291/4,291 | 3,880/4,150/4,150 | 115/230/460 | 12, 3R, 4, 4X | DTS 31X1 |
| N36-06x6-Gxxx | 5,650/5,650/6,026 | 5,600/5,250/6,000 | 115/230/460 | 12, 3R, 4, 4X | DTS 31X5 |
| N36-08x6-Gxxx | 6,739/6,855/6,716 | 6,650/6,470/6,390 | 115/230/460 | 12, 3R, 4, 4X | DTS 31X5 |
| N43-12x6-Gxxx | 10,044/9,332/9,332 | 9,650/9,080/9,250 | 115/230/460 | 12, 3R, 4, 4X | DTS 32X5 |
Pfannenberg DTS part numbers carry a voltage code, so a family name such as DTS 31X1 covers the 115, 230 and 460V builds. Where a 95/95 figure is shown as two or three numbers, they are the 115 / 230 / 460V values in that order. Send the voltage and we return the full orderable part number.
Width matters on a narrow retrofit
The N16 is 7.5 inches wide, the N21 is 10 inches, and the N28 and N43 are 11.5 inches. The Pfannenberg crosses split two ways on width. The DTS 31X1 and DTS 32X1 are 15.6 inches wide, while the DTS 31X1 SL is 12.1 inches and the DTS 31X5 is 12 inches, covering 5,097 to 6,995 BTU/hr at 95/95. Where the side panel is the constraint, the SL and the 31X5 are the narrow-footprint answer. Adapter plate P/N 18380000038 covers the existing N28-04 cutout for a bolt-over retrofit. Send the enclosure dimensions with the model number and we confirm fit on the quote.
The Pfannenberg DTS side mount range
| Pfannenberg model | Published BTU/hr | BTU/hr at 95/95 curve | Voltages | NEMA type |
|---|---|---|---|---|
| DTS 3021/3031 | 1,200 | 1,194/1,198 | 115/230 | 12, 3R, 4, 4X |
| DTS 3041 | 3,000 | 2,610 | 115/230/460 | 12, 3R, 4, 4X |
| DTS 3061/3081 | 3,000 | 2,382 | 115/230/460 | 12, 3R, 4, 4X |
| DTS 31X1 | 4,000 | 4,100/4,500 | 115/230/460 | 12, 3R, 4, 4X |
| DTS 31X1 SL | 5,000 | 5,097/5,648/5,301 | 115/230/460 | 12, 3R, 4, 4X |
| DTS 31X5 | 7,000 | 6,142/6,995/6,995 | 115/230/460 | 12, 3R, 4, 4X |
| DTS 32X1 | 8,500 | 6,825 | 115/230/460 | 12, 3R, 4, 4X |
| DTS 32X5 | 13,000 | 11,600/11,000/12,000 | 115/230/460 | 12, 3R, 4, 4X |
| DTS 34X1C | 21,000 | 20,840/20,434 | 230/460 | 12, 3R, 4, 4X |
| DTS 36X1C | 29,000 | 25,181/25,526 | 230/460 | 12, 3R, 4, 4X |
Compare capacity at 95°F/95°F, not the nameplate
Enclosure air conditioner ratings are not published at a single standard condition, so nameplate BTU/hr numbers across brands are not directly comparable. The honest comparison is capacity at 95°F ambient and 95°F enclosure temperature, read off the manufacturer's performance curve. A unit sold as 3,900 BTU/hr can deliver 3,400 BTU/hr at the 95/95 point. Every table on this page shows both numbers where the curve is published.
Four things have to line up before a substitution is valid:
- Capacity at the rating point. Match 95/95 performance, not marketing BTU.
- Voltage. 115, 230 or 460V must match the nameplate.
- Enclosure rating. NEMA Type 12, 3R, 4 or 4X on the air conditioner must match the enclosure environment.
- Mounting cutout. A capacity cross is not a cutout cross. Pfannenberg adapter plates cover specific retrofits; otherwise send the cutout dimensions with the model number and we confirm the mounting approach on the quote.
Also check where the cold air supply sits relative to the hot air return. Several competitor designs place them within 2 to 6 inches of each other, which lets cold discharge short-cycle straight back into the return and cuts effective cooling. Pfannenberg DTS units separate supply and return across the full height of the unit.
Common questions
What is the Pfannenberg equivalent of the Hoffman SpectraCool Narrow N28?
The Pfannenberg DTS 31X1, the 4,000 BTU/hr class side mount. The N28-04 publishes 4,011 to 4,291 BTU/hr and delivers 3,880 to 4,150 at the 95F/95F point; the DTS 31X1 publishes 4,000 and delivers 4,100 at 115V and 4,500 at 230V. Adapter plate P/N 18380000038 covers the existing N28 cutout.
What is the Pfannenberg equivalent of the Hoffman SpectraCool Narrow N36?
The Pfannenberg DTS 31X5, rated 7,000 BTU/hr published and 6,142 at 115V or 6,995 at 230 and 460V at the 95F/95F point. The N36-06 delivers 5,250 to 6,000 at 95/95 and the N36-08 delivers 6,390 to 6,650, so the DTS 31X5 covers both from a single unit at 230 or 460V.
Will a Pfannenberg unit fit the same narrow side panel as a SpectraCool Narrow?
Check the width. The N16 is 7.5 inches wide, the N21 is 10, and the N28 and N43 are 11.5. The capacity-matched DTS 31X1 is 15.6 inches wide, while the DTS 31X1 SL is 12.1 and the DTS 31X5 is 12, covering 5,097 to 6,995 BTU/hr at 95/95. Where panel width is the constraint, the SL and 31X5 are the narrow-footprint crosses. Send the enclosure dimensions with the model number and we confirm fit.
Does an adapter plate exist for replacing a SpectraCool Narrow with a Pfannenberg?
Yes, for the N28-04. Pfannenberg adapter plate P/N 18380000038 covers the existing cutout so the replacement bolts over the opening. For other N-series sizes, send the model number and the cutout dimensions and we confirm the mounting approach on the quote.
Comparing another brand? Start at the enclosure air conditioner cross reference hub.
Get a cross-referenced quote
Send the model number off the nameplate and the voltage. We come back with the Pfannenberg cross, the adapter plate if one exists for the retrofit, and a price inside 48 hours.
Email: christian.lauderback@appliedcontrolinc.com
Phone: 248-425-9065
HOFFMAN, SpectraCool and ProAir are trademarks of nVent or its affiliates. SCE and Enviro-Therm are trademarks of Saginaw Control & Engineering. RITTAL, Blue e and Blue e+ are trademarks of Rittal GmbH & Co. KG. IceQube, Kooltronic, Seifert and Thermal Edge are trademarks of their respective owners. Pfannenberg is a registered trademark of Pfannenberg GmbH. Applied Control Inc. is an authorized Pfannenberg manufacturers' representative and is not affiliated with, endorsed by, or sponsored by any competitor manufacturer named on this page. Competitor part numbers appear here solely to identify products for comparison. Capacities are compared at the 95°F ambient / 95°F enclosure rating point using publicly available performance data and are subject to change. Verify current specifications against the manufacturer’s own datasheet before purchase or installation.