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Samsung Hylex add-on R-454B · updated October 26, 2026

Hylex “add-on”: a heat pump on the furnace you keep.

A Hylex coil (HC series) goes on your furnace: the heat pump heats and cools through your ducts down to -25 °C, and the furnace takes over when needed. With the Premium, LogisVert is $1,812 (2 tons) or $2,592 (3 tons). We do not touch the burner or the gas or oil supply.

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Hylex

SAMSUNG · ADD-ONHylex™ + HC coilAC0**FCU*CG + HC**M**021H1 · R-454B

Coils 17.5, 21 or 24.5 in wide
R-454B detector in the coil
HA00A00203H1 controller required

$2,592

LogisVert for the Hylex Premium 3-ton add-on. The furnace stays in place.

Hydro-Québec’s LogisVert list, re-read Oct. 26, 2026.

17.5 · 21 · 24.5 inHC coil widths, per Samsung

-25 °Cheating limit, per Samsung

$2,592Highest LogisVert (Premium 3 t)

7add-on systems in our catalogue

AirGreen × SAMSUNGAdd-on: the furnace staysHylex HC-series coilPremium LogisVert: $1,812 and $2,592Rate DT may applyWe don’t touch the burnerMontreal · Laval · Longueuil · South Shore · North Shore

01 · My Hylex system

On your furnace: which Hylex, which coil?

Pick your options to see the models, the AHRI number, the heat at -8 °C, the LogisVert amount when there is one, and what to plan for.

1Which range?

2What capacity?

Capacity is worked out during the visit, from the house and your ducts. Samsung recommends a two-stage thermostat.

For all: heating down to -25 °C per Samsung; MXD-U001XN control unit required, sold separately.

SAMSUNG

Hylex Premium · add-on 3 tons

HC48MBC021H1 + AC036FCUPCG · AHRI 218158141

$2,592

Amount on Hydro-Québec’s LogisVert list (Oct. 26, 2026), $120 / 1,000 BTU/h at -8 °C

Heat at -8 °C, ENERGY STAR rating21,600 BTU/h
Math21.6 × $120 = $2,592
Heat at -15 °C, ENERGY STAR rating37,600 BTU/h
SEER2 / HSPF216.0 / 8.5
CertificationENERGY STAR cold climate
100% of the outdoor unit’s rated capacity down to-20 °C, per its Samsung sheet
Indoor unitCased A-coil (HC series), on your furnace

With an HC coil, Samsung also requires the HA00A00203H1 A2L mitigation controller.

See the product Free estimate

02 · On your furnace

Your furnace stays. The HC coil sits on top of it.

No HH unit here: the Hylex coil goes on your furnace, and the outdoor unit connects to it with two lines. We don’t touch the burner or the gas or oil supply.

What gets added

The Hylex HC coil, on the furnace
The MXD-U001XN control unit
The HA00A00203H1 mitigation controller
The Hylex outdoor unit and its lines

What stays

Your furnace
Its burner
The gas, oil or propane supply
Your ducts

An electric furnace? The HH unit takes its place.

03 · Who does what

Your furnace, our heat pump, Hydro-Québec’s sensor.

An add-on brings several parties around one house. Tap a part of the diagram: we tell you who handles it.

AirGreenHydro-QuébecYou or your fuel specialist

AirGreen

Outdoor unit and lines

Sold and installed by AirGreen: the Hylex outdoor unit, the refrigerant lines and start-up. RBQ 5645-9605-01, subclasses 15.8, 15.10 and 16. We register the unit with Samsung.

One source at a timeHydro-Québec requires it on Rate DT, and the Samsung control unit enforces it in dual fuel.

For Rate DT, Hydro-Québec itself lists a conventional central heat pump among the accepted electric modes. Simplified illustration.

Source: Hydro-Québec, Rate DT and How Rate DT works pages, read Oct. 14, 2026 (sensor, meter, light, attestation, one source at a time); Samsung MXD-U001XN manual (DB68-13653A) and brochure HYLEXBR 02.2026-V2 (dual-fuel thermostat); HC60MBC021H1 coil submittal (05052026). RBQ licence: Régie du bâtiment du Québec.

04 · Heat pump or furnace?

Drop the temperature: who heats?

With an add-on, the Hylex and your furnace share the winter, never heating together. Slide the temperature and change the switch point.

Outdoor temperature: -5 °CSwitch point

The MXD-U001XN control unit can lock the heat pump out at a chosen temperature, from 7 °C (45 °F) down to -29 °C (-20 °F) in 5 °F steps, or not at all. On Hydro-Québec’s dual-energy Rate DT, Hydro-Québec sets the switch: -12 °C or -15 °C, depending on the region.

Who heats?

—

Hylex heat pumpFurnace

Never both at once

—

Source: Samsung, MXD-U001XN control unit installation manual (DB68-13653A): adjustable heat pump lockout, simultaneous operation not permitted in dual fuel. Hydro-Québec, Rate DT.

05 · On the furnace

The HC coil: built-in detector, separate mitigation control.

The Hylex coil sits on your furnace. It has its own R-454B detector; Samsung requires a mitigation controller to act on a leak, and the MXD-U001XN control unit to run the furnace.

Illustration. Sources: Samsung Hylex submittal with coil (05052026); AC036FCUPCG outdoor unit submittal (URK-3A kit), re-read Oct. 26, 2026. We do not touch the burner or the gas or oil supply.

06 · The coil’s drain pan

On your furnace, a high-temperature polymer drain pan.

In summer, the coil makes water. Samsung designed its pan around that. Tap the points, pick your drain side, then block it to see what happens.

Your floor drain is

SAMSUNG

High-temperature polymer

“UV resistant drain pans are molded of high temperature (450°F) engineered polymer.” The pan is UV resistant, per Samsung.

Full pan: the Hylex shuts down.

The control unit has an input for a float switch (CN950 port, dry contact). Full pan: the system shuts down, and you get a notice in SmartThings (internet needed) or on the Samsung wall control. Samsung supplies the wire; the switch itself is bought separately.

A curious fact: the coil’s drain pan has its own antimicrobial additive, Microban, per Samsung. Data read on the HC60MBC021H1 coil submittal, the only Hylex coil Samsung publishes a full sheet for. Simplified illustration.

Source: Samsung, AC048FCUPCG + HC60MBC021H1 system submittal (05052026), re-read Oct. 26, 2026; MXD-U001XN manual (DB68-13653A): CN950 port, float switch wire included, switch from the distributor.

07 · Measure before our visit

17.5, 21 or 24.5 in: measure your furnace.

Hylex coils come in three widths. Measure your furnace cabinet and pull the tape: we show you which ones match.

Your furnace cabinet width:

17.5 in

HC24MCB021H1Standard 2 t
HC36MBB021H1Premium 2 t, Standard 3 t

21 in

HC36MCC021H1not in our store
HC48MBC021H1Premium 3 t, Standard 4 t, Standard 5 t
HC60MBC021H1Premium 4 t (on request)

24.5 in

HC60MCD021H1not in our store
HC60MAD021H1Premium 5 t

Positions, per the HC60MBC021H1 sheet

The Samsung sheet we checked doesn’t mention downflow.

Measure the furnace cabinet left to right where the air comes out. Jot down the brand and model too: it helps us prep the visit. Samsung makes three “60” class coils in two widths: 21 in and 24.5 in. Only the HC60MBC021H1 has a full sheet: 21 × 27 1/2 × 21 in, 58 lb.

Source: Samsung brochure HYLEXBR 02.2026-V2, p. 8 (widths of the seven HC coils); AC048FCUPCG + HC60MBC021H1 system submittal (05052026), re-read Oct. 26, 2026 (positions, dimensions); pairings: our product pages, confirmed by ENERGY STAR (Premium 2 to 4 t) and NEEP. Conversion: 1 in = 2.54 cm.

08 · Plan for

On your furnace: two required Samsung parts.

With an HC coil, Samsung requires the MXD-U001XN control unit and the HA00A00203H1 mitigation controller, both sold separately. No heat kit: your furnace is the backup.

AlwaysThe MXD-U001XN control unit

Required by Samsung on every Hylex, even with its own indoor unit, and sold separately. We include it in the quote.

With an HC coilThe HA00A00203H1 mitigation controller

Required by Samsung, sold separately. The detector is in the coil; the controller shuts the system down and runs the mitigation.

For dual fuelThe right thermostat

You need a Samsung communicating control or a 24 V thermostat that supports dual fuel, per Samsung. Two stages recommended.

Not neededNo heat kit

Your furnace is the backup. Samsung heat kits go in the HH unit, not on a coil.

09 · Hydro-Québec LogisVert

As an add-on, $1,812 or $2,592 with the Premium.

The 2- and 3-ton Premium add-ons are ENERGY STAR cold-climate certified. The 5-ton Premium add-on is not on the ENERGY STAR list, and the Standard is not certified. Pick a system to see the math.

ENERGY STAR cold climate: $120 / 1,000 BTU/hNo amount (reason shown)

Premium add-on · 3 t

$2,592

HC48MBC021H1 + AC036FCUPCG · AHRI 218158141

Heat at -8 °C (ENERGY STAR)21,600 BTU/h

CertificationENERGY STAR cold climate

Math21.6 × $120 = $2,592

Installation date

Apply no later than
July 8, 2027

Source: Hydro-Québec, list of heat pumps eligible for LogisVert (owner, existing home), amounts re-read Oct. 26, 2026, by AHRI number; Participation guide v1.10 (Sept. 15, 2026). Hydro-Québec’s list prevails; the final amount is confirmed when you apply. The program rules are explained once, on the Samsung page. Our LogisVert guide

10 · Same outdoor unit, different indoor unit

Same outdoor unit, different coil: the amount changes.

LogisVert doesn’t pay for an outdoor unit, it pays for a pairing. Pick a Premium size and compare the HH unit with the HC coil.

With the HH unit (electric furnace replaced)

AHRI
Heat at -8 °C
LogisVert
SEER2 · COP at -15 °C

With the HC coil (add-on)

AHRI
Heat at -8 °C
LogisVert
SEER2 · COP at -15 °C

Amount = ENERGY STAR heat at -8 °C ÷ 1,000 × $120 (cold climate). The amounts shown are those on Hydro-Québec’s list; Hydro-Québec confirms them on application, capped at 100% of the pre-tax cost, claim within nine months. One pairing or the other: two choices, not two amounts to add up. At 3 tons, the add-on gets more than the central system, because its heat at -8 °C is higher.

Source: ENERGY STAR (w7cv-9xjt), re-read Oct. 26, 2026; Hydro-Québec’s LogisVert list, amounts re-read Oct. 26, 2026; participation guide v1.10; NEEP (218331663), read Oct. 14, 2026.

11 · The dual-energy rate

Heat pump + furnace: Hydro-Québec’s Rate DT.

A central heat pump with a gas, oil or propane furnace may qualify for Hydro-Québec’s Rate DT. Here are Hydro-Québec’s rules.

-12 / -15 °CThe switch

Electricity at -12 °C or warmer (or -15 °C, depending on the region); fuel below, per Hydro-Québec.

Hydro-Québec sensorAutomatic

A temperature sensor that Hydro-Québec supplies and installs drives the switch from one source to the other.

Never togetherOne source at a time

Using both sources at once is not allowed on Rate DT. The Hylex works the same way in dual fuel.

Gas, oil…The fuels

Natural gas, oil, propane or wood pellets as backup. On the electric side, Hydro-Québec lists a conventional central heat pump.

2 registersThe meter

A double-register meter measures electricity at the two prices. The account must qualify for rates D, DP or DM.

The lightOptional

An indicator light shows which price your electricity is billed at. Hydro-Québec supplies it free; installing it is optional.

Source: Hydro-Québec, Rate DT and How Rate DT works pages, read Oct. 14, 2026. Rate DT conditions are set by Hydro-Québec: we tell you the steps. Hydro-Québec does not say which region switches at -12 °C and which at -15 °C.

12 · Samsung plate

The seven Hylex coils, side by side.

Samsung makes seven HC coils. We install five. Here is what Samsung publishes for each one, and what it doesn’t.

Samsung’s seven Hylex coils
Coil	HC24MCB021H1	HC36MBB021H1	HC36MCC021H1	HC48MBC021H1	HC60MCD021H1	HC60MBC021H1	HC60MAD021H1
Identification
WidthWidth (in.), brochure	17.5 in	17.5 in	21 in	21 in	24.5 in	21 in	24.5 in
Our add-on systemspairing	Standard 2 t	Premium 2 t Standard 3 t	not in our store	Premium 3 t Standard 4 t Standard 5 t	not in our store	Premium 4 t (on request)	Premium 5 t
System AHRI numberAHRI Certified Ref. No.	218226195*	218158139 218158133	not published	218158141 218158135 218158137	not published	218159516	218331663
System LogisVertHydro-Québec list	not listed	$1,812 not listed	not published	$2,592 not listed not listed	not published	$3,432	not listed
Samsung sheet
W × H × D · weightIndoor Unit (in.) · lbs.	not published	not published	not published	not published	not published	21 × 27 1/2 × 21 in · 58 lb	not published
Supply / returnSupply / Return (in.)	not published	not published	not published	not published	not published	19.5 × 19.5 · 20 × 20.5 in	not published
Airflow min / maxAirflow Minimum / Maximum (CFM)	not published	not published	not published	not published	not published	720 / 2,000 CFM	not published
PositionsMulti-position	not published	not published	not published	not published	not published	vertical, horizontal L and R	not published
DrainsCondensate Connection	not published	not published	not published	not published	not published	2 × 3/4 in FPT, front left and right	not published
R-454B detectorintegral leak detector	not published	not published	not published	not published	not published	built in	not published
Required by Samsung
Mitigation controllerRequired Components	HA00A00203H1	HA00A00203H1	HA00A00203H1	HA00A00203H1	HA00A00203H1	HA00A00203H1	HA00A00203H1
Control unitRequired Components	MXD-U001XN	MXD-U001XN	MXD-U001XN	MXD-U001XN	MXD-U001XN	MXD-U001XN	MXD-U001XN

What Samsung does not publish

The dimensions, weight, airflow and positions of six of the seven coils: only the HC60MBC021H1 sheet is published.
The HC coil installation manual and the HA00A00203H1 controller’s sequence.
Which furnace fuels are accepted: the Samsung documents we read name none.

* Number found only in our store data: no NEEP or ENERGY STAR record. Sources: brochure HYLEXBR 02.2026-V2 (widths); AC048FCUPCG + HC60MBC021H1 submittal (05052026), re-read Oct. 26, 2026; Samsung coil page (required components); ENERGY STAR, re-read Oct. 26, 2026; NEEP, read Oct. 14, 2026; Hydro-Québec’s LogisVert list.

13 · The Hylex collections

No fuel-burning furnace? Another Hylex page.

Electric furnace: the HH unit. To compare the lines: Premium and Standard.

4 products

Hylex Premium

Premium: $1,812 or $2,592 as an add-on.

See the collection

4 products

Hylex Standard

Standard: no LogisVert, lower at 2 and 3 t.

See the collection

7 products

“Add-on” central systems

You are here: the HC coil on your furnace.

You are here

8 products

Electric furnaces

Electric furnace? The HH unit takes its place.

See the collection

14 · AirGreen × SAMSUNG

Samsung makes the coil. We add it and leave the burner alone.

Samsung designs the HC coil, its detector and the control unit. Sold and installed by AirGreen: the coil, the outdoor unit, the lines and the control unit. Gas and oil stay with a fuel specialist.

What SAMSUNG brings

Cased HC coilBuilt-in R-454B detector.
Polymer drain panHigh temperature, per Samsung.
Control unitBetween the furnace, the thermostat and the outdoor unit.
Dual fuelNever both sources at once.

What AirGreen brings

Sold and installed by AirGreenThe visit, the quote, the installation and start-up.
Free home estimateWe pick the range and tonnage with you, on site.
Warranty registered for youWe register your unit with Samsung.
RBQ 5645-9605-01Subclasses 15.8, 15.10 and 16.

Said once for the whole range

These apply to every Hylex: they have their own page, so we don’t repeat them here.

Samsung warrantySamsung advertises up to 10 years on the compressor and parts, registration required within 60 days, conditions apply. The details, once for the whole range.LogisVert rulesHydro-Québec’s list, ENERGY STAR cold climate, nine months to apply: explained once, on the Samsung page.Thermostats and Wi-Fi24 V thermostat or Samsung communicating control: the controls page.Samsung partsSamsung parts and accessories, in one place.

15 · True or false

The Hylex add-on, in six claims.

True or false? Flip the cards.

0/ 6

Pick True or False: the card flips to show the answer and its source.

With a Hylex add-on, your furnace stays in place.

In deep cold, the Hylex and the furnace heat together.

The Hylex coil has its own leak detector.

The HA00A00203H1 mitigation controller is optional.

The Hylex coil’s drain pan has two drain outlets, one left, one right.

On Rate DT, a Hydro-Québec sensor decides the switch.

16 · Frequently asked questions

What people ask about the Hylex add-on.

No. We install the coil on the furnace and the heat pump outside; we don’t touch the burner or the gas or oil supply. That stays with your fuel specialist.

No. Samsung doesn’t allow the heat pump and a backup source to run at the same time, and Hydro-Québec rules out using both sources at once on Rate DT.

Maybe. For dual fuel, Samsung requires a Samsung communicating control or a 24 V thermostat that supports it, and recommends two stages. We check yours at the visit.

The one with the right width and the right pairing: Samsung coils are 17.5, 21 or 24.5 in wide. We measure the furnace at the visit.

It may: Hydro-Québec names the central heat pump among the accepted electric modes, with a fuel backup (natural gas, oil, propane or wood pellets). The sensor and the meter are installed by Hydro-Québec.

No question matches. Call us: 514 316-2973.

17 · The Samsung range

Far from the furnace: Samsung wall units, consoles and cassettes.

The rest of the Samsung range at AirGreen, sold and installed by us.

10 products

SAMSUNG wall-mounted heat pumps

WindFree Standard and Max Heat, 9,000 to 24,000 BTU/h.

See the collection

11 products

2, 3 or 4-head multi-zone

FJM Premium: up to 4 rooms on one outdoor unit.

See the collection

3 products

SAMSUNG ducted units

Slim duct hidden in a ceiling or closet.

See the collection

3 products

SAMSUNG ceiling cassettes

WindFree mini 4-way cassette, 2 × 2 ft.

See the collection

4 products

SAMSUNG floor consoles

Low on the wall, often under a window.

See the collection

3 products

SAMSUNG thermostats and Wi-Fi

Wired controllers and Wi-Fi adapter.

See the collection

The full SAMSUNG page

AirGreen × SAMSUNGSold and installed by AirGreenHylex: down to -25 °CLogisVert checked by AHRI numberFree home estimate

AirGreen · Heating & cooling

Your furnace stays. Your Hylex joins it, installed by AirGreen.

We look at your ducts, your furnace and the right spot outside. Then a clear quote: range, tonnage, AHRI number, parts to plan for and indicative LogisVert amount.

Book my free estimate 514 316-2973

Hydro-Québec does no phone or door-to-door solicitation for LogisVert. A call “from Hydro-Québec” selling a heat pump? Hang up.

RBQ 5645-9605-01Subclasses 15.8, 15.10 and 16

Free estimateAt home, no commitment

LogisVert worked outBy AHRI number: ENERGY STAR heat × Hydro-Québec rate

Showroom1370 Joliot-Curie St., Suite 712, Boucherville

Sources checked on October 26, 2026

Samsung HVAC Hylex R-454B spec sheets (2026), Hylex brochure (HYLEXBR 02.2026-V2) and MXD-U001XN control unit installation manual.
ENERGY STAR, Certified Air-Source Heat Pumps (dataset w7cv-9xjt), queried by AHRI number on Oct. 8, 2026, re-read Oct. 26, 2026.
Hydro-Québec, residential LogisVert page and LogisVert Participation Guide v1.10 (Sept. 15, 2026), checked Oct. 8, 2026.
Samsung HVAC 2026 spec sheets and warranty registration page (samsunghvac.com), checked Oct. 8, 2026.
Samsung Hylex R-454B submittals (outdoor units 02112026, HH air handler systems 04072026, HC coil 05052026), installation manuals DB68-13654A (outdoor), DB68-13653A (MXD-U001XN) and 679608-01 (HH air handler), brochure HYLEXBR 02.2026-V2.
Hydro-Québec, Rate DT and How Rate DT works pages, read Oct. 14, 2026.
ENERGY STAR, Certified Air-Source Heat Pumps (dataset w7cv-9xjt), Hylex records by AHRI number, re-read Oct. 26, 2026.
NEEP, Cold Climate Air Source Heat Pump List, records read by AHRI number on Oct. 14, 2026.
Hydro-Québec, list of heat pumps eligible for LogisVert (owner, existing home), amounts re-read Oct. 26, 2026.
Samsung, AC048FCUPCG + HC60MBC021H1 system submittal (05052026) and Hylex coil page, re-read Oct. 26, 2026.