ELIOS · Add-on coilsThe ELIOS space at AirGreenSold and installed by AirGreen across Greater Montreal.

On the existing furnaceData checked Oct. 26, 2026

ELIOS add-on central heat pumps · Greater Montreal

The ELIOS coil goes on the furnace already in place: the cabinet width decides the model.

Q: What warranty on an ELIOS add-on?

ELIOS publishes 1 year on parts and 5 years on the compressor, with optional 10-year coverage. ELIOS publishes no labour warranty.

Five ways to add an ELIOS heat pump to existing ducts: cased coil, uncased coil, A-coil, the −25 °C ESHEA series, and the older R-410A. B, C and D: 17.5, 21 or 24.5 in, for a furnace of the same width, per ELIOS.

Book my free estimate Find my coil

The add-on in four numbers

17.5 · 21 · 24.5in: B, C and D cabinets

120 °Ccoil continuous limit

−30 to +8 °Cadjustable switch to the furnace

$4,320highest LogisVert (5 tons)

ELIOS IOM_G_CHMAXX_2 manual and coil submittals; Hydro-Québec list of Oct. 25, 2026.

28ELIOS add-on listings

18,000 –60,000 BTU/h nominal, from the smallest to the largest

16.5best certified SEER2 on this page

−30 °Ccoldest certified heating point (NEEP)

$4,320 highest LogisVert amount, Hydro-Québec list of Oct. 25, 2026

AirGreen × ELIOSAdd-on coilOn your furnaceB · C · D cabinetsSold and installed by AirGreen

The essentials

What to know before putting a coil on a furnace.

Drawn from the ELIOS coil manuals and submittals. Certified figures are those of the coil with its outdoor unit.

Same width

The cased coil is designed for a furnace of the same width: B 17.5, C 21, D 24.5 in.

IOM_G_CHMAXX_2, p. 28 and 33

21.61 in

The 48,000 cabinet overhangs a 21 in furnace: adapter or transition of at least 4 in.

SUB_E_CHMA48; IOM_G_CHMAXX_2

120 °C

Coil continuous operating limit; ELIOS rules out uses where it may be exceeded, “such as with an oil furnace”.

SUB_E_CHMA30; SUB_E_UHMA18

200 °F

Maximum heat exchanger temperature of a gas furnace, to protect the leak sensor.

IOM_G_CHMAXX_2, p. 35

Dual fuel

The controller has a mode that automatically chooses between heat pump and furnace.

IOM_G_CHMAXX_2, p. 49

−30 to +8 °C

Setting of the outdoor switch-over temperature to the furnace.

IOM_G_CHMAXX_2, p. 49

Interface required

Every coil submittal says “Coil Interface (Required)”; ELIOS lists a Wi-Fi controller specific to coils.

SUB_E_CHMA30 (SMC1)

4 positions

Upflow, downflow, horizontal left or right; 4 in minimum adapter for downflow or high airflow.

IOM_G_CHMAXX_2

−30 or −25 °C

With ESHMA/ESHMB outdoor units the range goes to −30 °C; with the ESHEA series, to −25 °C, and only with an uncased coil.

ADD-ON brochure, p. 3

1.13 to 2.0

Average published COP at −30 °C of add-on systems, by size.

ADD-ON brochure, p. 3

30,000

BTU/h certified at −30 °C for the cased 48,000 (GCHMA48RCAS1 + ESHMA48).

NEEP, AHRI 216718862

15 psi

The coil ships under nitrogen, with a factory TXV for R-454B.

IOM_G_CHMAXX_2, p. 36-37

$1,824 to $4,320

LogisVert for R-454B coils with ESHMA/ESHMB outdoor units, list of Oct. 25, 2026.

Hydro-Québec list

Licensed partner

Gas, oil and hydronic work is outside our RBQ licence (15.8, 15.10 and 16): it is done by a partner who holds the required licence.

The lines

Five coil lines, one question: which furnace.

Counts and amounts read live. The ESHEA series (titles “avec boîtier”) uses uncased coils.

The duel

Two coil lines at the same size.

Pick two lines and a size: certified heat, cold, SEER2 and LogisVert.

AirGreen × ELIOS

An ELIOS coil on your furnace, a local team for the hookup.

ELIOS publishes the widths, the limits and the certified pairs. AirGreen measures the furnace and installs the coil and the outdoor unit.

What ELIOS brings

B · C · D cabinets17.5, 21 and 24.5 in.
Dual fuelSwitch-over adjustable from −30 to +8 °C.
Leak sensorStops the heat source on a leak.

What AirGreen brings

Sold and installed by AirGreenAcross Greater Montreal.
Free on-site estimateThe quotation names the ELIOS model that fits and the LogisVert amount Hydro-Québec lists.
RBQ 5645-9605-01Subclasses 15.8, 15.10 and 16.

The result: your furnace keeps its role, the ELIOS heat pump does the rest, installed by AirGreen.

Find my coil Get my free quotation

The ELIOS add-on shop

All our ELIOS add-on coils, right below.

One listing per coil, outdoor unit and size.

Everything to know

The add-on up close: width, limits, dual fuel.

What to check on the furnace before choosing the coil.

Every model, side by side

ELIOS coils, side by side.

Each row is a coil with its outdoor unit, under one AHRI number. The ESHEA 18,000, 30,000 and 36,000 are not on the Oct. 25, 2026 LogisVert list.

Model	Heat at −8 °C	Max at −15 °C	Coldest certified point	SEER2	HSPF2 (V)	Sound	LogisVert	Certification
Cased coil
Cased coil · 18,000 BTU/hESHMA18R2AN1 + GCHMA24RBAS1	15,200 BTU/h	18,000 BTU/h	−30 °C · 11,500 BTU/h	16.1	7.8	58 dB(A) outdoor	$1,824	AHRI 216623472 · ENERGY STAR 3892377, cold climate
Cased coil · 24,000 BTU/hESHMA24R2AN1 + GCHMA24RBAS1	19,700 BTU/h	21,000 BTU/h	−30 °C · 12,100 BTU/h	16	7	60 dB(A) outdoor	$2,364	AHRI 216623473 · ENERGY STAR 3892378, cold climate
Cased coil · 30,000 BTU/hESHMA30R2AN1 + GCHMA36RBAS1	25,000 BTU/h	32,000 BTU/h	−30 °C · 22,000 BTU/h	16	8.2	62 dB(A) outdoor	$3,000	AHRI 216623474 · ENERGY STAR 3892379, cold climate
Cased coil · 30,000 BTU/hESHMA30R2AN1 + GCHMA36RCAS1	25,000 BTU/h	32,000 BTU/h	−30 °C · 22,000 BTU/h	16	8.2	62 dB(A) outdoor	$3,000	AHRI 216623475 · ENERGY STAR 3892380, cold climate
Cased coil · 36,000 BTU/hESHMB36R2AN1 + GCHMA36RBAS1	29,200 BTU/h	36,000 BTU/h	−30 °C · 28,600 BTU/h	15.8	7.9	64 dB(A) outdoor	$3,504	AHRI 216623811 · ENERGY STAR 3892399, cold climate
Cased coil · 36,000 BTU/hESHMB36R2AN1 + GCHMA36RCAS1	29,200 BTU/h	36,000 BTU/h	−30 °C · 28,600 BTU/h	15.8	7.9	64 dB(A) outdoor	$3,504	AHRI 216623812 · ENERGY STAR 3892400, cold climate
Cased coil · 48,000 BTU/hESHMA48R2AN1 + GCHMA48RCAS1	34,400 BTU/h	42,000 BTU/h	−30 °C · 30,000 BTU/h	15.2	7.4	65 dB(A) outdoor	$4,128	AHRI 216718862 · ENERGY STAR 3892554, cold climate
Cased coil · 60,000 BTU/hESHMA60R2AN1 + GCHMA60RDAS1	36,000 BTU/h	43,000 BTU/h	−30 °C · 29,500 BTU/h	15.2	6.8	64 dB(A) outdoor	$4,320	AHRI 216623476 · ENERGY STAR 3892381, cold climate
Uncased coil
Uncased coil · 18,000 BTU/hESHMA18R2AN1 + GUHMA24RBAS1	15,200 BTU/h	18,000 BTU/h	−30 °C · 11,500 BTU/h	16.1	7.8	58 dB(A) outdoor	$1,824	AHRI 216623479 · ENERGY STAR 3892383, cold climate
Uncased coil · 24,000 BTU/hESHMA24R2AN1 + GUHMA24RBAS1	19,700 BTU/h	21,000 BTU/h	−30 °C · 12,100 BTU/h	16	7	60 dB(A) outdoor	$2,364	AHRI 216623480 · ENERGY STAR 3892384, cold climate
Uncased coil · 30,000 BTU/hESHMA30R2AN1 + GUHMA36RBAS1	25,000 BTU/h	32,000 BTU/h	−30 °C · 22,000 BTU/h	16	8.2	62 dB(A) outdoor	$3,000	AHRI 216623481 · ENERGY STAR 3892385, cold climate
Uncased coil · 36,000 BTU/hESHMB36R2AN1 + GUHMA36RBAS1	29,200 BTU/h	36,000 BTU/h	−30 °C · 28,600 BTU/h	15.8	7.9	64 dB(A) outdoor	$3,504	AHRI 216760015 · ENERGY STAR 3942704, cold climate
A-coil
A-coil · 30,000 BTU/hESHMA30R2AN1 + GUHMA36RCAS1	25,000 BTU/h	32,000 BTU/h	−30 °C · 22,000 BTU/h	16	8.2	62 dB(A) outdoor	$3,000	AHRI 216623482 · ENERGY STAR 3892386, cold climate
A-coil · 36,000 BTU/hESHMB36R2AN1 + GUHMA36RCAS1	29,200 BTU/h	36,000 BTU/h	−30 °C · 28,600 BTU/h	15.8	7.9	64 dB(A) outdoor	$3,504	AHRI 216760016 · ENERGY STAR 3942705, cold climate
Coil with box
Coil with box · 18,000 BTU/hESHEA18R2AN1 + GUHMA24RBAS1	13,400 BTU/h	10,800 BTU/h	−25 °C · 8,600 BTU/h	16	6.9	56 dB(A) outdoor	—	AHRI 216623477
Coil with box · 24,000 BTU/hESHEA24R2AN1 + GUHMA24RBAS1	19,700 BTU/h	19,000 BTU/h	−25 °C · 13,900 BTU/h	16	7	60 dB(A) outdoor	$2,364	AHRI 216623478 · ENERGY STAR 3892382, cold climate
Coil with box · 30,000 BTU/hESHEA30R2AN1 + GUHMA36RBAS1	19,000 BTU/h	19,000 BTU/h	−25 °C · 16,500 BTU/h	15.8	6.6	60 dB(A) outdoor	—	AHRI 216732468
Coil with box · 30,000 BTU/hESHEA30R2AN1 + GUHMA36RCAS1	19,000 BTU/h	19,000 BTU/h	−25 °C · 16,500 BTU/h	15.8	6.6	60 dB(A) outdoor	—	AHRI 216732469
Coil with box · 36,000 BTU/hESHEA36R2AN1 + GUHMA36RBAS1	25,200 BTU/h	27,200 BTU/h	−25 °C · 20,400 BTU/h	14.7	6.5	63 dB(A) outdoor	—	AHRI 216684116
Coil with box · 36,000 BTU/hESHEA36R2AN1 + GUHMA36RCAS1	25,200 BTU/h	27,200 BTU/h	−25 °C · 20,400 BTU/h	14.7	6.5	63 dB(A) outdoor	—	AHRI 216684117
R-410A add-on
R-410A add-on · 1.5 tons · 18,000 BTU/hDEA18HOS20230E7 + CUB24HAC20BWT7A	14,700 BTU/h	15,000 BTU/h	−30 °C · 12,500 BTU/h	16.1	7.8	—	$1,764	AHRI 213081448 · ENERGY STAR 3544283, cold climate
R-410A add-on · 2 tons · 24,000 BTU/hDEA24HOS20230E7 + CUB24HAC20BWT7A	21,000 BTU/h	20,000 BTU/h	−30 °C · 16,000 BTU/h	16.5	7.7	—	$2,520	AHRI 213081449 · ENERGY STAR 3544284, cold climate
R-410A add-on · 2.5 tons · 30,000 BTU/hDEA30HOS20230E7 + CUB36HAC20BWT7A	19,600 BTU/h	22,600 BTU/h	−30 °C · 13,200 BTU/h	15.2	6.6	—	$2,352	AHRI 214215183 · ENERGY STAR 3543140, cold climate
R-410A add-on · 2.5 tons · 30,000 BTU/hDEA30HOS20230E7 + CUB36HAC20BWT7A	19,600 BTU/h	22,600 BTU/h	−30 °C · 13,200 BTU/h	15.2	6.6	—	$2,352	AHRI 214215183 · ENERGY STAR 3543140, cold climate
R-410A add-on · 3 tons · 36,000 BTU/hDEA36HOS20230E7 + CUB36HAC20BWT7A	27,400 BTU/h	31,600 BTU/h	−30 °C · 20,000 BTU/h	15.5	7	—	$3,288	AHRI 213081452 · ENERGY STAR 3543138, cold climate
R-410A add-on · 3 tons · 36,000 BTU/hDEA36HOS20230E7 + CUB36HAC20BWT7A	27,400 BTU/h	31,600 BTU/h	−30 °C · 20,000 BTU/h	15.5	7	—	$3,288	AHRI 213081452 · ENERGY STAR 3543138, cold climate
R-410A add-on · 4 tons · 48,000 BTU/hDEA48HOS20230E7 + CUB48HAC20CWT7A	32,000 BTU/h	40,000 BTU/h	−30 °C · 30,000 BTU/h	14.3	7.5	—	—	AHRI 213081453
R-410A add-on · 5 tons · 60,000 BTU/hDEA60HOS20230E7 + CUB60HAC20DWT7A	37,000 BTU/h	46,500 BTU/h	−30 °C · 30,000 BTU/h	14.5	7.1	—	—	AHRI 213081454

Heat at −8 °C, maximum at −15 °C and coldest point: NEEP registry (ashp.neep.org), read by AHRI number on Oct. 14, 2026. SEER2 and HSPF2 region V: same source. LogisVert amounts: Hydro-Québec’s list of eligible heat pumps, Oct. 25, 2026. Sound: ELIOS technical documents. A dash means “not published”.

The thermometer

From 8 °C to −30 °C: what each pair certifies.

Heating capacity certified by NEEP, outdoor unit included.

Furnace width

How wide is your furnace?

Pick the cabinet width: here are the ELIOS coils designed for it, and the outdoor units certified with each.

The sound meter

The outdoor unit, how much noise?

Maximum outdoor unit levels per ELIOS, on the Québec.ca scale.

With a furnace

What the ELIOS documents require with a gas or oil furnace.

Quotes from the ELIOS manuals and submittals. Gas, oil and hydronic work is outside our RBQ licence (15.8, 15.10 and 16): it is done by a partner who holds the required licence.

Never at the same time

The coil control must stop the heat pump from running unless the fan is on, and stop the heat pump and the furnace from running at the same time.

IOM_G_CHMAXX_2, p. 7

Gas: 200 °F

With a gas furnace, the heat exchanger must not exceed 200 °F: beyond that, the leak sensor may malfunction.

IOM_G_CHMAXX_2, p. 35

Oil: the 120 °C limit

The coil has a 120 °C continuous limit. ELIOS rules out installations where it may be exceeded, “such as with an oil furnace”.

SUB_E_CHMA30; SUB_E_UHMA18

Did you know

Eight details from the ELIOS add-on documents.

Tap a card to flip it.

LogisVert · Hydro-Québec

LogisVert on ELIOS coils: up to $4,320.

21 of the 28 listings on this page appear on Hydro-Québec’s list of eligible heat pumps (Oct. 25, 2026). The amount follows the certified heating capacity at −8 °C, size by size.

Model	Capacity at −8 °C	Rate	Amount
Cased coil · 18,000 BTU/h	15,200 BTU/h	$120 per 1,000 BTU/h, cold climate	$1,824
Cased coil · 24,000 BTU/h	19,700 BTU/h	$120 per 1,000 BTU/h, cold climate	$2,364
Cased coil · 30,000 BTU/h	25,000 BTU/h	$120 per 1,000 BTU/h, cold climate	$3,000
Cased coil · 30,000 BTU/h	25,000 BTU/h	$120 per 1,000 BTU/h, cold climate	$3,000
Cased coil · 36,000 BTU/h	29,200 BTU/h	$120 per 1,000 BTU/h, cold climate	$3,504
Cased coil · 36,000 BTU/h	29,200 BTU/h	$120 per 1,000 BTU/h, cold climate	$3,504
Cased coil · 48,000 BTU/h	34,400 BTU/h	$120 per 1,000 BTU/h, cold climate	$4,128
Cased coil · 60,000 BTU/h	36,000 BTU/h	$120 per 1,000 BTU/h, cold climate	$4,320
Uncased coil · 18,000 BTU/h	15,200 BTU/h	$120 per 1,000 BTU/h, cold climate	$1,824
Uncased coil · 24,000 BTU/h	19,700 BTU/h	$120 per 1,000 BTU/h, cold climate	$2,364
Uncased coil · 30,000 BTU/h	25,000 BTU/h	$120 per 1,000 BTU/h, cold climate	$3,000
A-coil · 30,000 BTU/h	25,000 BTU/h	$120 per 1,000 BTU/h, cold climate	$3,000
Uncased coil · 36,000 BTU/h	29,200 BTU/h	$120 per 1,000 BTU/h, cold climate	$3,504
A-coil · 36,000 BTU/h	29,200 BTU/h	$120 per 1,000 BTU/h, cold climate	$3,504
Coil with box · 24,000 BTU/h	19,700 BTU/h	$120 per 1,000 BTU/h, cold climate	$2,364
R-410A add-on · 1.5 tons · 18,000 BTU/h	14,700 BTU/h	$120 per 1,000 BTU/h, cold climate	$1,764
R-410A add-on · 2 tons · 24,000 BTU/h	21,000 BTU/h	$120 per 1,000 BTU/h, cold climate	$2,520
R-410A add-on · 2.5 tons · 30,000 BTU/h	19,600 BTU/h	$120 per 1,000 BTU/h, cold climate	$2,352
R-410A add-on · 2.5 tons · 30,000 BTU/h	19,600 BTU/h	$120 per 1,000 BTU/h, cold climate	$2,352
R-410A add-on · 3 tons · 36,000 BTU/h	27,400 BTU/h	$120 per 1,000 BTU/h, cold climate	$3,288
R-410A add-on · 3 tons · 36,000 BTU/h	27,400 BTU/h	$120 per 1,000 BTU/h, cold climate	$3,288

How Hydro-Québec computes it

The amount follows the certified heating capacity at −8 °C: $120 per 1,000 BTU/h for a cold-climate ENERGY STAR heat pump, $50 for a standard ENERGY STAR heat pump.

Outdoor unit of 12,000 BTU/h or more.
Capped at 100% of the cost of the work.
Apply within 9 months of the installation.

Source: Hydro-Québec, LogisVert participation guide, residential customers, version 1.10 of September 15, 2026. Have Hydro-Québec confirm your case. Our LogisVert page.

Hydro-Québec does no phone or door-to-door solicitation for LogisVert. The amount shown is indicative: only Hydro-Québec confirms the aid granted.

Questions

Questions about ELIOS add-on coils.

How do I know which coil fits my furnace?

Measure the furnace cabinet width: 17.5, 21 or 24.5 in match ELIOS’s B, C and D cabinets. The “Furnace width” tool above sorts it out; we confirm on site.

Does it work with a gas furnace?

ELIOS provides for it: dual fuel mode, adjustable switch-over, and the heat exchanger must stay under 200 °F. Gas, oil and hydronic work is outside our RBQ licence (15.8, 15.10 and 16): it is done by a partner who holds the required licence.

And with an oil furnace?

ELIOS names the oil furnace as an example of an installation where the coil’s 120 °C limit may be exceeded, and rules such uses out. We check with the licensed partner before any quotation.

Do the “avec boîtier” titles mean “cased”?

No: those six listings use uncased coils (GUHMA) with the ESHEA outdoor unit, rated to −25 °C. The cased coils are the GCHMA.

And if my furnace is 14.5 in?

ELIOS makes no coil of that width. A transition is needed: we measure and propose the solution.

Does LogisVert apply to an add-on?

Yes if the pair is on Hydro-Québec’s list: $1,824 to $4,320 for R-454B coils with ESHMA/ESHMB units as of Oct. 25, 2026. Several ESHEA pairs and the 4- and 5-ton R-410A units are not on it.

What warranty on an ELIOS add-on?

ELIOS publishes 1 year on parts and 5 years on the compressor, with optional 10-year coverage. ELIOS publishes no labour warranty.

AirGreen × ELIOSAdd-on coilOn your furnaceB · C · D cabinetsSold and installed by AirGreen

AirGreen × ELIOS · your project

A furnace to keep, a heat pump to add? We measure.

We measure the furnace and the ducts, choose the coil and the outdoor unit, and coordinate with the licensed partner if the furnace runs on gas or oil.

Book my free estimate 514 316-2973

AirGreen · Air Conditioning & Heating

RBQ licence 5645-9605-01, subclasses 15.8 (ventilation), 15.10 (refrigeration) and 16 (electrical).

Free on-site estimate across Greater Montreal: Montreal, Laval, Longueuil, the North Shore and the South Shore.

Gas, oil and hydronic work is done by a partner who holds the required licence.

514 316-2973 · sales@airgreen.ca

Sources checked on Oct. 26, 2026

ELIOS, SUB_E_CHMA (cased) and SUB_E_UHMA (uncased) coil submittals, with their outdoor units, eliosprotech.com.
ELIOS, ADD-ON brochure (Elios_Central-EliosADDON_202509_V02).
ELIOS, IOM_G_CHMAXX_2 and IOM_G_UHMAXX_1 manuals (cabinet widths, dual fuel, temperature limits).
ELIOS, R-410A CUB coil submittals (SUB_E_S24CUB and following).
ELIOS, TRS_E_410454_1 bulletin (JUNE-19-26): CUB replaced by GCHMA.
NEEP, Cold Climate Air Source Heat Pump List, ashp.neep.org, records read by AHRI number on Oct. 14, 2026.
ENERGY STAR, Certified Air-Source Heat Pumps dataset (data.energystar.gov, w7cv-9xjt), Canadian market, read Oct. 14, 2026.
Hydro-Québec, LogisVert eligible heat pump list, owner, existing home, file of Oct. 25, 2026 (ELIOS rows identical to Oct. 14).
Hydro-Québec, LogisVert participation guide, residential customers, version 1.10, Sept. 15, 2026.
Québec.ca, “Mesure du bruit”, updated June 16, 2022 (dBA sound scale).
ENERGY STAR, “Properly Sized Room Air Conditioners”, energystar.gov (sizing chart), read Oct. 26, 2026.

Amounts shown are estimates; only the responsible organizations confirm the aid granted. Product availability is confirmed at the time of the quotation.

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