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An ACD FXD central, and what the backup adds

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ACD · FXD + AH central heat pump · 2 to 5 tons

ACD FXD central: how much heat it still delivers at −30 °C

The ACD FXD central pairs an FXD-ACD36 or FXD-ACD60 outdoor unit with an AH indoor unit, from 2 to 5 tons. Its sheet publishes a −30 °C heating limit, and NEEP lists its heat at each test point. Pick a size, an electric element and a temperature: the “What the backup adds” tool puts the heat pump’s heat next to the backup’s.

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Updated November 5, 2026 · ACD FXD + AH sheet, AHRI certificates, NEEP, ENERGY STAR and the LogisVert guide

NEEP list · November 5, 2026

Maximum heat listed at −30 °C, in BTU/h

2 tons18,800
3 tons19,100
4 tons23,500
5 tons24,300

NEEP records 406034 to 406031, −22 °F test point. The ACD sheet publishes a −30 °C heating limit for all four.

4ACD FXD centrals in the shop, 2 to 5 tons
−30 °Cheating limit published on the ACD FXD sheet
24,300BTU/h, maximum listed on NEEP at −30 °C, the 5-ton
4FXD + AH systems on the cold-climate ENERGY STAR list read on November 5, 2026

This page answers

At −30 °C, how much does the ACD FXD central still heat, and what does the electric element give?

On this page

The ACD shop · central

The ACD FXD centrals in the shop, right below

ACD FXD centrals of 2, 3, 4 and 5 tons, each with its AH indoor unit. Each product page gives the AHRI number of the pair. Price on quotation.

01 · What the backup adds

The heat pump and the electric element, side by side, at the same outdoor temperature

The heat pump figures are the ones NEEP lists at four test temperatures. The element figures are its electric power converted to BTU/h. Neither is a heating need.

Size

Electric element

Elements listed for ACD AH units: 10 or 15 kW (15 kW: named in the product page text only) for 2 and 3 tons, 20 kW for 4 and 5 tons.

NEEP test temperature

At the chosen temperature

28,000 BTU/hheat pump, maximum listed on NEEP at −15 °C

Heat pump FXD-ACD36 + AH23628,000 BTU/h

NEEP record 406033, at −15 °C (5 °F), COP 1.80

Electric element 10 kW34,120 BTU/h

10 kW × 3,412 BTU/h per kW

Same scale for both bars: 0 to 68,240 BTU/h

At −15 °C, the 3-ton ACD FXD central is listed on NEEP at 28,000 BTU/h at most, 80% of its maximum listed at 8.3 °C (35,000 BTU/h); the 10 kW element adds 34,120 BTU/h.

AHRI pairFXD-ACD36 + AH236, certificate 207497902
SEER2 / HSPF216 / 9 (NEEP and ENERGY STAR)
ENERGY STARcold climate, record 2415274
LogisVertindicative amount of $3,480
Product page: 3-ton ACD FXD central

LogisVert: $120 per 1,000 BTU/h at −8 °C for a cold-climate ENERGY STAR heat pump; record 2415274 lists 29,000 BTU/h at 17 °F, so an indicative amount of $3,480. Only Hydro-Québec confirms the assistance granted.

Heat pump: maximum listed on NEEP at the chosen test point (records 406031 to 406034, read on November 5, 2026). Element: power in kW × 3,412 BTU/h per kW; elements listed for ACD AH units (elements product page). The tool does not work out your home’s need: that is measured at the on-site assessment of your heating needs.

The four ACD FXD centrals
SizeAHRI pairSEER2 / HSPF2MCA / MOPOutdoor sound
2 tonsFXD-ACD36 + AH22417 / 918 / 20 A60 dB(A)
3 tonsFXD-ACD36 + AH23616 / 924 / 35 A62 dB(A)
4 tonsFXD-ACD60 + AH24817 / 936 / 45 A64 dB(A)
5 tonsFXD-ACD60 + AH26016 / 940 / 50 A65 dB(A)

SEER2 and HSPF2: NEEP and ENERGY STAR (region IV). MCA, MOP and outdoor sound: ACD FXD + AH sheet, which does not print the sound test conditions. Pairs: AHRI certificates 207497901 to 207497904, issued March 3, 2022.

02 · Central or wall unit

At 24,000 BTU/h: the FXD 2-ton central or the Révolution 24,000 wall unit?

Same nominal heating, 24,000 BTU/h, same published −30 °C limit. NEEP tells them apart in deep cold.

Central · NEEP 406034 · ENERGY STAR 2416733

FXD-ACD36 + AH224, 2 tons

Distributionthrough ducts, with the AH224
Published heating limit−30 °C
Max. listed on NEEP at −8.3 °C24,000 BTU/h
Max. listed on NEEP at −15 °C22,000 BTU/h
Max. listed on NEEP at −30 °C18,800 BTU/h
SEER2 / HSPF217 / 9
LogisVertindicative amount of $2,400

Wall unit · NEEP 406804 · ENERGY STAR 2415080

Révolution 24,000

Distributionwall unit, one room
Published heating limit−30 °C
Max. listed on NEEP at −8.3 °C26,263 BTU/h
Max. listed on NEEP at −15 °C24,000 BTU/h
Max. listed on NEEP at −30 °C9,600 BTU/h
SEER2 / HSPF221.5 / 9.5
LogisVertindicative amount of $2,400
The Révolution page

At −30 °C, NEEP lists the 2-ton central at 18,800 BTU/h at most, almost double the Révolution 24,000’s 9,600 BTU/h. At −8.3 °C and −15 °C, the Révolution is listed higher, and it does better in cooling (SEER2 21.5 vs. 17) and in heating (HSPF2 9.5 vs. 9). LogisVert: the same indicative amount of $2,400 for both, since ENERGY STAR lists both at 20,000 BTU/h at 17 °F (rated capacity, not the maximum listed on NEEP). Only Hydro-Québec confirms the assistance granted.

03 · Did you know

Three details on the ACD FXD central, from its sheet and the registries

9.3 / 12.3 lb

Two outdoor units, two refrigerant charges

The ACD sheet gives the FXD-ACD36 outdoor unit (2 and 3 tons) 9.3 lb of refrigerant and the FXD-ACD60 (4 and 5 tons) 12.3 lb.

ACD FXD + AH technical sheet

1 → 4

ENERGY STAR lists more sizes than the sheet

The ACD FXD sheet marks only the 2-ton as ENERGY STAR. The ENERGY STAR list read on November 5, 2026 counts all four pairs, 2 to 5 tons, as cold climate.

ACD FXD + AH sheet; ENERGY STAR 2416733, 2415274 to 2415276

3 / 4

At −8.3 °C, three sizes out of four keep their 8.3 °C maximum

NEEP lists the 2-, 3- and 4-ton ACD FXD centrals at 24,000, 35,000 and 48,000 BTU/h at most at −8.3 °C (17 °F), as much as at 8.3 °C; the 5-ton at 49,000 out of 54,000.

NEEP list, records 406031 to 406034

04 · Questions

Your questions about the ACD FXD central heat pump

How much heat does the ACD FXD central give at −30 °C?

At −30 °C (−22 °F), NEEP lists the ACD FXD central at 18,800 BTU/h at most in 2 tons, 19,100 in 3 tons, 23,500 in 4 tons and 24,300 in 5 tons, with a COP of 1.41 to 1.15. The ACD sheet publishes −30 °C as the heating limit.

NEEP list, records 406031 to 406034; ACD FXD + AH sheet
Which electric element goes with the ACD FXD central?

For the AH224 and AH236 (2 and 3 tons), the elements product page offers 10 kW and names 15 kW in its text; for the AH248 and AH260 (4 and 5 tons), 20 kW. At its rated power, a 10 kW element adds 34,120 BTU/h and a 20 kW element 68,240 BTU/h: more than the 18,800 to 24,300 BTU/h NEEP lists for the central at −30 °C. The element size is chosen at the on-site assessment, with your electrical service; the Furnaces page details each AH.

Product page for the elements listed for ACD AH units; NEEP list, records 406031 to 406034
Is the ACD FXD central eligible for LogisVert?

All four FXD + AH pairs are on the ENERGY STAR list read on November 5, 2026, as cold-climate systems. Since November 26, 2025, LogisVert has required ENERGY STAR, and cold climate sets the rate at $120 per 1,000 BTU/h at −8 °C (guide 1.10, p. 15). With the ENERGY STAR capacity at 17 °F, that gives an indicative amount of $2,400 (2 tons), $3,480 (3 tons), $4,740 (4 tons) or $5,280 (5 tons). Only Hydro-Québec confirms the assistance granted.

ENERGY STAR 2416733, 2415274 to 2415276; LogisVert guide 1.10, pp. 14 and 15; Hydro-Québec notice on the November 26, 2025 list update (ENERGY STAR only)
How much of its nominal capacity does the ACD FXD central keep at −30 °C?

The ACD sheet claims “100% efficiency at −4 °F and 78% at −22 °F”, without defining the term. NEEP lists no point at −20 °C. At −30 °C, the 2-ton is listed there at 18,800 BTU/h at most, 78% of its nominal 24,000 BTU/h; the 5-ton at 24,300 BTU/h, 45% of its 54,000 (AirGreen calculation from NEEP).

ACD FXD + AH technical sheet (claim quoted); NEEP list, records 406034 and 406031; AHRI certificates 207497901 and 207497904
What ACD warranty comes with the FXD central?

ACD’s standard warranty for the FXD-AH central covers parts for 10 years and the compressor for 10 years, in residential use, for a unit installed in Québec on or after January 1, 2021. Replacement parts are covered for 3 months. The warranty requires installation by a qualified installer and the annual maintenance set out in the manual; uninstalling and reinstalling the unit voids it. In commercial use, other terms apply.

ACD R410 standard warranty
What does an ACD FXD central heat pump cost?

Pricing for a 2- to 5-ton ACD FXD central is by quotation, installation included; the size and the electric element are decided at the on-site assessment. That in-home estimate is free, with no obligation.

AirGreen · Heating and cooling

An ACD FXD central on your ducts: we assess everything at your home

We look at your ducts and your electrical service, assess your heating needs on site, choose the size and the electric element, then send you the quote. The estimate is free.

Book my free home estimate 514 316-2973
RBQ 5645-9605-01Subclasses 15.8, 15.10 and 16
Sold and installed by AirGreen.Montréal, Laval, Longueuil, the South Shore and the North Shore
Free estimateAt home, no obligation
Showroom1370 Joliot-Curie Street, Suite 712, Boucherville

Sources checked on November 5, 2026

  • ACD FXD + AH technical sheet (FR and EN): heating limit, sound levels, MCA and MOP, refrigerant charge, ENERGY STAR mark and the low-temperature efficiency claim (quoted in the questions).
  • AHRI certificates 207497901 to 207497904 (FXD + AH, issued March 3, 2022): outdoor and indoor pairs.
  • NEEP cold-climate heat pump list, records 406031 to 406034 (ACD FXD centrals) and 406804 (Révolution 24,000), read on November 5, 2026: ashp.neep.org.
  • ENERGY STAR certified air-source heat pumps (Canadian market), records 2416733, 2415274, 2415275, 2415276 and 2415080, read on November 5, 2026: energystar.gov.
  • Hydro-Québec: LogisVert participation guide, residential, version 1.10 (September 15, 2026), pp. 14 and 15; Hydro-Québec notice on the November 26, 2025 list update (ENERGY STAR only): hydroquebec.com.
  • Product page for the electric elements listed for ACD AH units, read on November 5, 2026: 10 and 20 kW offered, 15 kW mentioned in the text only.
  • ACD Révolution technical sheet (FR and EN): published heating limit of the Révolution 24,000.
  • ACD R410 standard warranty (bilingual), “Central FXD-AH R410” row.

LogisVert amounts are indicative: only Hydro-Québec confirms the assistance granted. Price on quotation; free home estimate.