Hoffman enclosure air conditioners cross to the Pfannenberg DTS series for side mount and the DTT series for top mount. The tables below cover SpectraCool G, SpectraCool Narrow, Slim Fit S, T-series and ProAir CR models, with capacity compared at the 95°F/95°F rating point and the Pfannenberg adapter plate part numbers that make specific retrofits bolt over the existing cutout.
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Hoffman side mount to Pfannenberg cross reference
| Model | Published BTU/hr | BTU/hr at 95/95 curve | Voltages | NEMA type | Pfannenberg cross |
|---|---|---|---|---|---|
| T15-01x6-Gxxx | 955 | 950 | 115/230 | 12, 3R, 4, 4X | DTS 3021/3031 |
| 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 |
| S06-03x6-Gxxx | 1,000 | 1,430 | 115/230 | 12 | DTS 3041 |
| CR23-02x6-Gxxx | 1,600/1,733 | Not published | 115/230 | 12, 3R, 4, 4X | DTS 3041 |
| N17-02x6-Gxxx | 1,800 | 1,630/1,740/1,740 | 115/230/460 | 12 | DTS 3041 |
| X23-02x6-Gxxx | 2,100/1,900 | 1,950/1,830 | 115/230 | 12, 3R, 4, 4X | DTS 3041 |
| S06-05x6-Gxxx | 2,190 | 2,190 | 115/230 | 12 | DTS 3041 |
| N21-02x6-Gxxx | 2,000 | 1,980/1,900/1,900 | 115/230/460 | 12, 3R, 4, 4X | DTS 3041 |
| T20-02x6-Gxxx | 2,200 | 1,980/1,820/1,820 | 115/230/460 | 12, 3R, 4, 4X | DTS 3041 |
| CR29-02x6-Gxxx | 3,000/2,700/2,700 | Not published | 115/230/460 | 12, 3R, 4, 4X | DTS 3041 |
| T29-04x6-Gxxx | 3,900 | 3,400 | 115/230/460 | 12, 3R, 4, 4X | DTS 31X1 |
| CR29-04x6-Gxxx | 4,000 | Not published | 115/230/460 | 12, 3R, 4, 4X | DTS 31X1 |
| N28-04x6-Gxxx | 4,011/4,291/4,291 | 3,880/4,150/4,150 | 115/230/460 | 12, 3R, 4, 4X | DTS 31X1 |
| G28-04x6-Gxxx | 3,410/4,600/4,655 | 3,200/4,550/4,500 | 115/230/460 | 12, 3R, 4, 4X | DTS 31X1 (115V), DTS 31X1 SL (230/460V) |
| S10-10x6-Gxxx | 4,710 | 4,700 | 115/230/460 | 12 | DTS 31X1 SL |
| T43-06x6-Gxxx | 5,474/5,572/5,572 | 4,920/4,675/4,675 | 115/230/460 | 12, 3R, 4, 4X | DTS 31X1 SL |
| N36-06x6-Gxxx | 5,650/5,650/6,026 | 5,600/5,250/6,000 | 115/230/460 | 12, 3R, 4, 4X | DTS 31X5 |
| G28-06x6-Gxxx | 6,000/6,000/5,685 | 6,000/6,000/5,585 | 115/230/460 | 12, 3R, 4, 4X | DTS 31X5 |
| CR43-06x6-Gxxx | 6,000 | Not published | 115/230/460 | 12, 3R, 4, 4X | DTS 31X5 |
| S10-15x6-Gxxx | 6,420 | 6,420 | 115/230/460 | 12 | 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 |
| G52-08x6-Gxxx | 6,793/6,800/7,112 | 6,800/7,112/7,195 | 115/230/460 | 12, 3R, 4, 4X | DTS 32X5 |
| T43-08x6-Gxxx | 7,224/6,711 | 7,100/6,700/6,700 | 115/230/460 | 12, 3R, 4, 4X | DTS 32X5 |
| CR43-08x6-Gxxx | 8,000 | Not published | 115/230/460 | 12, 3R, 4, 4X | DTS 32X5 |
| S16-20x6-Gxxx | 6,800 | 8,200 | 115/230/460 | 12 | DTS 32X5 |
| T43-10x6-Gxxx | 11,000/10,251/10,251 | 9,210/8,500/8,500 | 115/230/460 | 12, 3R, 4, 4X | DTS 32X5 |
| S16-25x6-Gxxx | 9,560 | 9,560 | 115/230/460 | 12 | DTS 32X5 |
| N43-12x6-Gxxx | 10,044/9,332/9,332 | 9,650/9,080/9,250 | 115/230/460 | 12, 3R, 4, 4X | DTS 32X5 |
| G52-12x6-Gxxx | 10,700/9,913/9,757 | 11,200/9,800/9,400 | 115/230/460 | 12, 3R, 4, 4X | DTS 32X5 |
| T50-12x6-Gxxx | 12,000 | 10,850 | 230/460 | 12, 3R, 4, 4X | DTS 32X5 |
| S16-4046-Gxxx | 15,400 | 15,400 | 460 | 12 | DTS 34X1C |
| T53-19x6-Gxxx | 19,000 | 17,300 | 230/460 | 12, 3R, 4, 4X | DTS 34X1C |
| G57-20x6-Gxxx | 18,000/21,400 | 20,200 | 230/460 | 12, 3R, 4, 4X | DTS 34X1C |
| T62-22X6-Gxxx | 20,256 | 20,700 | 230/460 | 12, 3R, 4, 4X | DTS 34X1C |
| T70-36x6-Gxxx | 60,000 | 51,500 | 230/460 | 12, 3R, 4, 4X | Send the heat load, we size it |
| T70-60x6-Gxxx | 60,000 | 54,580 | 460 | 12, 3R, 4 | Send the heat load, we size it |
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.
Adapter plates for Hoffman retrofits
These Pfannenberg adapter plates cover the existing Hoffman mounting cutout, so the replacement bolts over the opening instead of requiring new panel work. We confirm the plate and unit pairing on the quote.
| Hoffman model being replaced | Pfannenberg cross | Adapter plate P/N |
|---|---|---|
| T29-04x6-Gxxx | DTS 31X1 | 18380000038 |
| N28-04x6-Gxxx | DTS 31X1 | 18380000038 |
| G28-04x6-Gxxx | DTS 31X1 SL | 18380000040 |
| S10-10x6-Gxxx | DTS 31X1 SL | 18380000040 |
| S10-15x6-Gxxx | DTS 31X5 | 18380000040 |
| G28-06x6-Gxxx | DTS 31X5 | 18380000042 |
| T43-06x6-Gxxx | DTS 31X1 SL | 18380000042 |
| G52-08x6-Gxxx | DTS 32X5 | 18380000045 |
| G52-12x6-Gxxx | DTS 32X5 | 18380000039 |
Hoffman top mount to Pfannenberg cross reference
| Model | Published BTU/hr | BTU/hr at 95/95 curve | Voltages | Pfannenberg cross |
|---|---|---|---|---|
| MHB11-02x6-Gxxx | 2,200 | Not published | 115/230/460 | DTT 6201 |
| MHB11-04x6-Gxxx | 4,000 | Not published | 115/230/460 | DTT 6301 |
| MHB16-08x6-Gxxx | 8,000 | Not published | 230/460 | DTT 6601 |
The Pfannenberg DTT top mount range runs from the DTT 6101 at 1,785 BTU/hr published to the DTT 6801 at 14,000 BTU/hr. The DTT 6601 and DTT 6801 are 460V. Final sizing is confirmed against the heat load on the quote.
Discontinued Hoffman M-series
The M-series is discontinued. When one of these fails there is no like-for-like replacement, so the swap is sized on the heat load rather than the old nameplate. Send the part number and the enclosure dimensions and we return the current Pfannenberg unit that covers it.
| Discontinued model | Published BTU/hr | Voltages |
|---|---|---|
| M13-01x6-Gxxx | 1,000 | 115/230/460 |
| M17-02x6-Gxxx | 1,800 | 115/230 |
| M28-02x6-Gxxx | 2,000 | 115/230/460 |
| M33-04x6-Gxxx | 3,850 | 115/230/460 |
| M28-04x6-Gxxx | 4,000 | 115/230/460 |
| M52-04x6-Gxxx | 4,000 | 460 |
| M28-06x6-Gxxx | 6,000 | 115/230/460 |
| M36-06x6-Gxxx | 6,000 | 115/230/460 |
| M52-06x6-Gxxx | 6,000 | 460 |
| M52-08x6-Gxxx | 8,000 | 460 |
| M52-10x6-Gxxx | 10,000 | 460 |
| M52-12x6-Gxxx | 12,000 | 460 |
Hoffman suffix decoder
| Suffix | Configuration |
|---|---|
| G050 | Indoor model |
| G051 | Indoor model, stainless steel (NEMA 4X) |
| G060 | Indoor model with remote access control |
| G100 | Outdoor model without heat package |
| G101 | Outdoor model, partial recess mount |
| G150 | Outdoor model with heat package |
| G010 | Indoor model (N17 series) |
| G020 | Indoor model with remote access control (N17 series) |
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 a Hoffman SpectraCool air conditioner?
SpectraCool models cross to the Pfannenberg DTS side mount series by capacity at the 95F/95F rating point. The 4,000 BTU/hr class N28 crosses to the DTS 31X1, the G28-06 crosses to the DTS 31X5, and the G52-08 and G52-12 cross to the DTS 32X5. Voltage, NEMA type and cutout still have to be confirmed.
Do adapter plates exist to replace a Hoffman air conditioner with a Pfannenberg?
Yes. Pfannenberg adapter plates cover the existing Hoffman cutout for specific retrofits: P/N 18380000038 for the T29-04 and N28-04, P/N 18380000040 for the G28-04, S10-10 and S10-15, P/N 18380000042 for the G28-06 and T43-06, P/N 18380000045 for the G52-08, and P/N 18380000039 for the G52-12. The plate lets the Pfannenberg unit mount over the existing opening without cutting a new one.
What replaces a discontinued Hoffman M-series air conditioner?
The M-series is discontinued and the published ratings were catalog figures with no performance curve, so the replacement is sized on the actual heat load rather than the old nameplate. Send the M-series part number, the voltage and the enclosure dimensions and we return the current Pfannenberg DTS unit that covers it along with the mounting approach.
What does the G050 or G150 suffix mean on a Hoffman air conditioner model number?
The suffix identifies the configuration. G050 is the indoor model, G051 is the indoor stainless steel NEMA 4X model, G060 is indoor with remote access control, G100 is the outdoor model without a heat package, G101 is outdoor with partial recess mount, and G150 is the outdoor model with a heat package.
Is the BTU rating on a Hoffman unit directly comparable to a Pfannenberg rating?
Not at the nameplate. Ratings are published at different conditions, so the comparison has to be made at a common point. At 95F ambient and 95F enclosure, a Hoffman T29-04 rated 3,900 BTU/hr delivers 3,400 BTU/hr. The tables on this page show both numbers for every model where the curve is published.
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.