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FORESTAIR · E24 · MZ · E-TECH+FORESTAIR at AirGreenSold and installed by AirGreen. We install in Montréal, Laval, Longueuil, on the South Shore and on the North Shore.
All of FORESTAIRUpdated November 11, 2026
E24 series · R-454B
FORESTAIR E24 R-454B wall heat pump: the heat left at −15 °C and −25 °C, size by size
At −15 °C, an E24 keeps 71% to 74% of its nominal heat (our calculation from the values listed on NEEP); at −25 °C, NEEP still lists a maximum of 6,100 to 17,000 BTU/h depending on size. At −15 °C, NEEP lists only 200 BTU/h less for the 12,000 on 115 V than for its 208-230 V twin.
12,600BTU/h nominal at 8.3 °C, 12,000 on 208-230 VNEEP; the base of our percentages
17,000BTU/h maximum at −25 °C for the 24,000NEEP
6R-454B E24 models
−25 °Cpublished heating limitE24 brochure
6 models · R-454BNEEP: records 508680 to 508685Heating published from −25 to +30 °CCooling published from −15 to +55 °C
The shop
Shop the 6 E24 wall heat pumps
Two on 115 V and four on 208-230 V, from 9,000 to 24,000 BTU/h.
E24 cold night
The E24 in deep cold: heat listed on NEEP, 8.3 °C to −25 °C
Each E24 has its own record on NEEP, a directory of cold-climate heat pumps: heat and COP at 8.3 °C, −8.3 °C and −15 °C, then only a maximum at −25 °C. A NEEP listing alone does not make a unit eligible for LogisVert: guide v1.10 requires ENERGY STAR certification, and all six E24 units are in that registry too.
Bars: heat at each temperature, scaled to the nominal heat at 8.3 °C; hatched bar: maximum at −25 °C. COP 2.1 at −15 °C (12,000 on 208-230 V): at that temperature, the unit delivers 2.1 units of heat per unit of electricity. At −25 °C, NEEP lists only maximum values: the heat and COP shown are the maximum and the COP at maximum. For the 24,000, that COP at maximum (1.99) is above the COP listed at −15 °C (1.8, nominal and maximum alike): shown as listed. NEEP records 508680 to 508685, read November 5, 2026.
At 8 °C, the brochure publishes a COP of 3.81 (3.41 for the 24,000); NEEP lists at 8.3 °C 3.81 for the 9,000 units and the 12,000 on 208-230 V, 3.79 for the 12,000 on 115 V, 3.64 for the 18,000 and 3.26 for the 24,000: the tool shows NEEP.
E24 · 12,000 BTU/h · 208-230 V at −15 °C
9,100BTU/h listed on NEEP
COP2.1
Share of the nominal heat at 8.3 °C (12,600 BTU/h), AirGreen calculation72%
NEEP record508682 · AHRI 217512358
At −25 °C, NEEP lists only a maximum, not a nominal value.
LogisVert: $1,200 (guide v1.10 rate applied to the 10,000 BTU/h listed on NEEP at −8.3 °C; details under the six-model table). Indicative amount. Only Hydro-Québec confirms the assistance granted.
Did you know?
E24 wall heat pump: three details from the brochure
8.4 A vs 4.2 A
the 12,000 on 115 V takes twice the current of its 208-230 V twin
In nominal heating, the E24 brochure publishes 8.4 A for the 12,000 on 115 V and 4.2 A for the 12,000 on 208-230 V. Maximum overcurrent protection: 25 A and 15 A.
E24 series brochure, document 072025: system performance and outdoor unit.820 · 920 · 1,097 mm
the width of the indoor unit, from the 9,000 to the 24,000
Indoor unit width: 820 mm for the 9,000; 920 mm for the 12,000; 1,097 mm for the 18,000 and 24,000. Height: 195 to 222 mm. On 115 V or 208-230 V, the dimensions are the same.
E24 series brochure, document 072025: indoor unit.810 × 549 × 305 mm
the same outdoor dimensions for the four smallest E24 units, on 115 V and 208-230 V
On 115 V or 208-230 V, the 9,000 and 12,000 outdoor units all measure 810 × 549 × 305 mm; their net weight runs from 23.9 to 26.5 kg. The 18,000 grows to 927 mm wide and the 24,000 to 978 mm.
E24 series brochure, document 072025: outdoor unit.The six E24 units
E24 wall heat pumps model by model: AHRI, registries and deep-cold heat
Heating capacities in BTU/h. NEEP: values at −8.3 °C and −15 °C, maximum at −25 °C. SEER2 and HSPF2: seasonal efficiency in cooling and in heating; the higher they are, the less the unit uses for the same result (24.0 and 10.0 for the 12,000 on 208-230 V).
| Model | Circuit | AHRI | ENERGY STAR | NEEP | At −8.3 °C | At −15 °C | Max. at −25 °C | SEER2 | HSPF2 (Region IV) | LogisVert |
|---|---|---|---|---|---|---|---|---|---|---|
| E24 9,000 | 115 V | 217512355 | 4529617 | 508685 | 8,000 | 7,100 | 6,100 | 23.0 | 9.5 | under the minimum |
| E24 9,000 | 208-230 V | 217512357 | 4529619 | 508683 | 8,000 | 7,100 | 6,100 | 23.0 | 9.5 | under the minimum |
| E24 12,000 | 115 V | 217512356 | 4529618 | 508684 | 10,000 | 8,900 | 6,680 | 23.0 | 10.0 | $1,200 |
| E24 12,000 | 208-230 V | 217512358 | 4529620 | 508682 | 10,000 | 9,100 | 6,680 | 24.0 | 10.0 | $1,200 |
| E24 18,000 | 208-230 V | 217512359 | 4529621 | 508681 | 15,000 | 13,600 | 9,000 | 23.0 | 10.0 | $1,800 |
| E24 24,000 | 208-230 V | 217512360 | 4529622 | 508680 | 21,000 | 18,600 | 17,000 | 23.0 | 9.5 | $2,520 |
LogisVert: amounts from our product pages, at the guide v1.10 rate: $120 per 1,000 BTU/h at −8 °C for an ENERGY STAR “cold climate” heat pump, applied to the capacities listed on NEEP at −8.3 °C. The 9,000 units are under the guide’s minimum: 12,000 BTU/h nominal in cooling. Indicative amount. Only Hydro-Québec confirms the assistance granted.
In the columns of this table, the E24 brochure (document 072025) differs from the registries on three points. It swaps two AHRI numbers: it prints 217512357 for the 12,000 on 115 V and 217512356 for the 9,000 on 208-230 V. It publishes a SEER2 of 24.0 for both 9,000 units. And it publishes an HSPF2 of 8.6 (9,000 and 12,000) or 8.2 (18,000 and 24,000) without naming the region; NEEP lists Region V values of 8.1 for the 9,000 units, 8.6 for the 12,000 units and 8.2 for the 18,000 and 24,000. The table gives Region IV, where the ENERGY STAR registry and NEEP agree, as they do on AHRI and SEER2. Per the registry, the 12,000 on 208-230 V uses the FA-H12-D24TL-O-454 outdoor unit; the same outdoor unit also drives a FORESTAIR ceiling cassette.
The comparison that matters
12,000 BTU/h wall heat pump on 115 V: E24 or E-20
Of the four FORESTAIR wall series on our pages, they are the only two published on 115 V.
| 12,000 BTU/h, 115 V | E24 (FA-H12-A24TL) | E-20 (FA-H12A20TL) |
|---|---|---|
| Refrigerant | R-454B | R-410A |
| Nominal heating | 12,400 BTU/h | 12,000 BTU/h |
| Nominal heating current | 8.4 A | 9.7 A |
| Indoor, lowest published value | 30 dB(A) | 34 dB(A) (in cooling) |
| Heating published down to | −25 °C | −25 °C |
| NEEP at −15 °C | 8,900 BTU/h (record 508684) | not listed |
| ENERGY STAR registry (Canadian market) | 4529618 | not listed |
| LogisVert | $1,200, indicative amount | no amount: not in the ENERGY STAR registry |
Compare the four wall series: E24, E-20, E-23 and E-38 side by side, by size, circuit and priority.
Two rooms to heat: two E24 units, each with its own outdoor unit, or one FA-M18 multi-zone heat pump with two heads on a single outdoor unit.
What we check in your home
Installing an E24: the circuit, the lines, the support and the height difference
Four limits from the E24 brochure (document 072025).
- The circuit: on 115 V, a breaker or fuse of 20 or 25 A at most; on 208-230 V, 15 to 25 A depending on size. That is the MOP, the largest breaker or fuse allowed; the MCA, 10 to 17 A depending on the model, is the minimum current the circuit wiring must handle.
- The refrigerant lines: 3/8 in suction up to the 12,000, 1/2 in for the 18,000 and 5/8 in for the 24,000; 1/4 in liquid at every size.
- The outdoor-unit support: 41 kg net for the 18,000, 47.5 kg for the 24,000.
- The height difference between the two units: 10 m at most up to the 12,000, 15 m for the 18,000 and 24,000.
Frequently asked questions
E24 wall heat pump: common questions
Does an E24 wall heat pump still heat at −25 °C?
Yes: the E24 brochure publishes a heating range of −25 to +30 °C, and NEEP lists a maximum at −25 °C for each model, from 6,100 BTU/h for the 9,000 to 17,000 BTU/h for the 24,000. Below −25 °C, nothing is published.
Does the 115 V E24 heat less than the 208-230 V one?
Barely. At −15 °C, NEEP lists 8,900 BTU/h for the 12,000 on 115 V and 9,100 BTU/h on 208-230 V; the two 9,000 units list the same value.
How far from the room can an E24’s outdoor unit go?
Per the E24 brochure: 15 m of piping and 10 m of height difference at most for the 9,000 and 12,000, 20 m and 15 m for the 18,000 and 24,000. The outdoor unit is precharged for 7.5 m of line. We measure the run at the on-site assessment.
How loud is an E24 wall heat pump?
The brochure publishes five indoor sound levels per model, without naming the speeds: the lowest is 30 dB(A) up to the 12,000, 34 dB(A) for the 18,000 and 24,000. Outdoor unit: 50 to 54 dB(A). Québec.ca benchmarks: 40 dB(A) is perceived as peaceful; 50 dB(A) is where noise starts to disturb.
Does the E24 have Wi-Fi?
The E24 brochure uses two wordings: built-in Wi-Fi, and Wi-Fi remote control through a USB connector. It does not say whether the USB module is in the box; the quote states what is supplied with your unit.
Which E24 units qualify for the LogisVert grant?
The two 12,000 units: $1,200; the 18,000: $1,800; the 24,000: $2,520, an indicative amount each. For a 12,000, that is the guide v1.10 rate for an ENERGY STAR “cold climate” heat pump, $120 per 1,000 BTU/h at −8 °C, which we apply to the 10,000 BTU/h listed on NEEP at −8.3 °C. The 9,000 units are under the guide’s 12,000 BTU/h nominal minimum. Only Hydro-Québec confirms the assistance granted.
Sold and installed by AirGreen.
Your E24: two things to check before our visit
- Your panel: a photo tells us whether 115 V is possible (9,000 and 12,000 only).
- The run to the outdoor unit: 15 m at most at 9,000 and 12,000, 20 m at 18,000 and 24,000.
RBQ 5645-9605-01Subclasses 15.8, 15.10 and 16. Gas and oil: a licensed partner.
Free estimateAt home, no commitment.
LogisVert on the quoteAHRI number and indicative amount when the unit qualifies. Only Hydro-Québec confirms the assistance granted.
Showroom1370 Joliot-Curie Street, Suite 712, Boucherville.
Hydro-Québec never solicits by phone or door to door for the LogisVert Efficient Homes Program.
Sources
- FORESTAIR, E24 series brochure, document 072025 (2025): performance, indoor and outdoor units, refrigeration system. PDF
- NEEP, Cold Climate Air Source Heat Pump List, records 508680 to 508685, read November 5, 2026. ashp.neep.org
- ENERGY STAR, heat pump registry, Canadian market, records 4529617 to 4529622, read November 5, 2026. data.energystar.gov
- FORESTAIR, E-20 series spec sheet, read November 5, 2026. forestair.ca
- Hydro-Québec, LogisVert Efficient Homes Program, participant’s guide, version 1.10 (September 15, 2026). Indicative amounts: those on our product pages. hydroquebec.com
- Government of Québec, “Noise measurement”, updated June 16, 2022. quebec.ca
Page updated November 11, 2026.