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Midea Atom X central heat pump · updated October 8, 2026

Atom X: the Midea central unit from the VRF range, down to -30 °C.

A mini VRF from Midea Building Technologies, 1.5 to 5 tons, paired at AirGreen with an MIH air handler. Midea states heating down to -30 °C and automatic refrigerant charging. LogisVert: $1,872 to $4,800.

See the six sizesBook my free estimate
MideaAtom X · R-454B

Your Atom X, size by size

Tap a size: the combination, its certified heat and its LogisVert amount.

Size
Atom X · 3 tons3 tons Atom X central unitMDV-V36WMN10T + MIH36VMN10
31,200 BTU/hHeat at -8 °C
16,000 BTU/hMax. at -30 °C
17.0SEER2
$3,744LogisVert

AHRI 216441717 · ENERGY STAR cold climate · maximum heat at -30 °C published by the NEEP list.

See the product
6sizes, 1.5 to 5 tons
-30 °Cheating, according to Midea
$4,800Highest LogisVert (5 t)
18.0Highest SEER2 (2.5 t)
AirGreen × MIDEAMIDEA PRO dealerAtom X · 1.5 to 5 tonsDown to -30 °CLogisVert checked by AHRIMontreal · Laval · Longueuil · South Shore · North Shore
01 · The sizes

Six sizes, 1.5 to 5 tons, all ENERGY STAR cold climate.

Certified heat at 8 °C and -8 °C, maximum heat at -15 °C and -30 °C, efficiency and LogisVert amount for each size. Tap a size to open its product page.

Size and combinationHeat at 8 °CHeat at -8 °CKept at -8 °CMax. at -15 °CMax. at -30 °CSEER2HSPF2LogisVertAHRI
Atom X 1.5 tonsMDV-V18WMN10T + MIH18VMN1018,000 BTU/h15,600 BTU/h87%19,100 BTU/h8,270 BTU/h17.09.25$1,872216441714
Atom X 2 tonsMDV-V24WMN10T + MIH24VMN1024,000 BTU/h18,000 BTU/h75%20,200 BTU/h8,610 BTU/h17.09.2$2,160216441715
Atom X 2.5 tonsMDV-V30WMN10T + MIH30VMN1030,000 BTU/h26,000 BTU/h87%30,000 BTU/h16,330 BTU/h18.010.0$3,120216441716
Atom X 3 tonsMDV-V36WMN10T + MIH36VMN1036,000 BTU/h31,200 BTU/h87%36,000 BTU/h16,000 BTU/h17.09.4$3,744216441717
Atom X 4 tonsMDV-V48WMN10T + MIH48VMN1048,000 BTU/h36,800 BTU/h77%42,000 BTU/h17,700 BTU/h17.09.4$4,416216441718
Atom X 5 tonsMDV-V60WMN10T + MIH54VMN1054,000 BTU/h40,000 BTU/h74%46,000 BTU/h18,500 BTU/h17.09.3$4,800216441719

ENERGY STAR (heat at 8 °C, at -8 °C and maximum at -15 °C, SEER2, HSPF2) and NEEP (maximum heat at -30 °C), data by AHRI number, Oct. 8, 2026. Blue marks the best value in each column. LogisVert: Hydro-Québec formula, ENERGY STAR cold climate for all twelve combinations.

02 · How it works

From the outdoor air to your ducts: the path of the heat.

Tap a step to see it on the diagram, or switch to cooling: the same circuit runs the other way.

heat taken from the airheat rejected outsideMidea outdoor unitbasementair handlerreturnair through the ducts12345MIDEA AirGreen diagram

AirGreen principle diagram: unit positions and line lengths vary from house to house.

03 · In deep cold

At -30 °C, the 5-ton Atom X still gives 18,500 BTU/h.

Certified heat at 8 °C and -8 °C, maximum at -15 °C and -30 °C, for each size. Bars scaled per size.

Atom X · 1.5 tons

MDV-V18WMN10T
8,270 BTU/hmaximum heat at -30 °C (NEEP)
8 °C18,000 BTU/h
-8 °C15,600 BTU/h
-15 °C19,100 BTU/h
-30 °C8,270 BTU/h

Runs down to -30 °C (-22 °F), according to Midea

Atom X · 2 tons

MDV-V24WMN10T
8,610 BTU/hmaximum heat at -30 °C (NEEP)
8 °C24,000 BTU/h
-8 °C18,000 BTU/h
-15 °C20,200 BTU/h
-30 °C8,610 BTU/h

Runs down to -30 °C (-22 °F), according to Midea

Atom X · 2.5 tons

MDV-V30WMN10T
16,330 BTU/hmaximum heat at -30 °C (NEEP)
8 °C30,000 BTU/h
-8 °C26,000 BTU/h
-15 °C30,000 BTU/h
-30 °C16,330 BTU/h

Runs down to -30 °C (-22 °F), according to Midea

Atom X · 3 tons

MDV-V36WMN10T
16,000 BTU/hmaximum heat at -30 °C (NEEP)
8 °C36,000 BTU/h
-8 °C31,200 BTU/h
-15 °C36,000 BTU/h
-30 °C16,000 BTU/h

Runs down to -30 °C (-22 °F), according to Midea

Atom X · 4 tons

MDV-V48WMN10T
17,700 BTU/hmaximum heat at -30 °C (NEEP)
8 °C48,000 BTU/h
-8 °C36,800 BTU/h
-15 °C42,000 BTU/h
-30 °C17,700 BTU/h

Runs down to -30 °C (-22 °F), according to Midea

Atom X · 5 tons

MDV-V60WMN10T
18,500 BTU/hmaximum heat at -30 °C (NEEP)
8 °C54,000 BTU/h
-8 °C40,000 BTU/h
-15 °C46,000 BTU/h
-30 °C18,500 BTU/h

Runs down to -30 °C (-22 °F), according to Midea

ENERGY STAR (8 °C, -8 °C, maximum at -15 °C) and NEEP (maximum at -30 °C), data by AHRI number, Oct. 8, 2026.

04 · 1 kWh, how much heat?

What 1 kWh gives, size by size.

Pick a model and a temperature: here is how many kWh of heat come out per kWh of electricity, from the NEEP list COPs, and what a kWh of heat costs at Rate D.

Model
Outside
Heat delivered× 2.41kWh of heat per kWh of electricity
Electric baseboard1.00
This heat pump2.41
Cost of one kWh of heat, Rate D
2.93 ¢1st tier (straight electric: 7.065 ¢)
4.62 ¢2nd tier (straight electric: 11.142 ¢)

At -8 °C, heat of 15,600 BTU/h at the rated point (NEEP list).

COPs published by the NEEP list (ashp.neep.org, data by AHRI number, Oct. 8, 2026): rated at 8, -8 and -15 °C; at the coldest point, at maximum output, as reported by the manufacturer. Electric baseboard: about 100% efficient (NRCan, “Heating with Electricity”). Hydro-Québec Rate D in force April 1, 2026: 7.065¢/kWh up to 40 kWh per day, 11.142¢/kWh beyond, plus the access charge. A lab COP is not a bill: real use depends on the house and how it is used.

05 · Hydro-Québec LogisVert

From $1,872 to $4,800 per Atom X.

The amount follows each size’s certified heat at -8 °C. Tap a size to see the calculation and your application deadline.

ENERGY STAR cold climate: $120 / 1,000 BTU/h
Your calculation

Atom X · 5 tons

$4,800
CombinationMDV-V60WMN10T + MIH54VMN10
Heat at -8 °C40,000 BTU/h
CertificationENERGY STAR cold climate
Formula40.0 × $120 = $4,800
AHRI number216441719
Apply no later than —
Heat at -8 °C counts

The amount follows the certified heat at -8 °C of the exact combination, hence the AHRI number on the quote.

ENERGY STAR required

Since November 26, 2025, only ENERGY STAR certified units qualify.

Nine months to apply

You apply no later than 9 months after installation.

Capped at cost

The rebate never exceeds 100% of the purchase and installation cost before taxes.

Source: Hydro-Québec, LogisVert residential participation guide v1.10 (Sept. 15, 2026) and eligible heat pump search tool, consulted Oct. 6, 2026; heat at -8 °C: ENERGY STAR, Oct. 8, 2026. Indicative amounts, confirmed by Hydro-Québec when you apply. Our LogisVert page

06 · What Midea puts inside

What Midea built into the Atom X.

The features Midea Building Technologies states for its AtomX range.

Atom X
Atom XVariable-speed mini VRF

The Atom X comes from Midea Building Technologies’ VRF range: a variable-speed outdoor unit, from 1.5 to 5 tons.

Atom XFrom -30 °C to 52 °C

Midea states heating down to -30 °C (-22 °F) and cooling up to 52 °C (125 °F).

Atom XAutomatic refrigerant charging

The system does its own R-454B refrigerant charge at start-up, according to Midea.

Atom XLong line sets

According to Midea: up to 90 m for the longest run, 300 m of piping in total and 50 m of height difference between the outdoor and indoor units.

Atom XR-454B refrigerant

According to Midea, the Atom X’s R-454B has a global warming potential of 466, versus 2,088 for the R-410A of earlier generations.

ENERGY STARCold climate, six sizes

All six Atom X combinations in our catalogue are ENERGY STAR cold climate certified, up to 18.0 SEER2 at 2.5 tons.

Source: Midea EVOX G³ homeowner brochure and Midea Comfort Canada EVOX G3 page; Midea Building Technologies AtomX brochure (hvac.midea.com, file of March 7, 2025); certifications: ENERGY STAR, Oct. 8, 2026.

07 · The two series

Atom X or EVOX G3? Both, side by side.

Same sizes, same -30 °C limit according to Midea. The difference shows mostly in deep cold and in the indoor unit.

CriterionEVOX G3Atom X
RangeMidea Comfort, residentialMidea Building Technologies, mini VRF
Sizes1.5 to 5 tons1.5 to 5 tons
Runs down to-30 °C, according to Midea-30 °C (-22 °F), according to Midea
100% of the heatDown to -25 °C, according to MideaNot stated by Midea
Max. heat at -30 °C (NEEP)11,800 BTU/h to 37,300 BTU/h8,270 BTU/h to 18,500 BTU/h
Heat at -8 °C (ENERGY STAR)14,700 BTU/h to 45,000 BTU/h15,600 BTU/h to 40,000 BTU/h
SEER217.2 to 19.017.0 to 18.0
HSPF29.5 to 10.89.2 to 10.0
LogisVert$1,764 to $5,400$1,872 to $4,800
Indoor unitModular MAUSE: three screwless modules, six positionsMIH multi-position air handler
Worth knowingEnhanced vapor injection (EVI) in deep coldAutomatic refrigerant charging, lines up to 90 m
WarrantyMidea limited warranty: up to 12 years on parts and compressorConfirmed in writing with the quote
Our published installs2145

Certified figures: ENERGY STAR and NEEP by AHRI number, Oct. 8, 2026, for the six sizes of each series. Features and limits: Midea (Midea Comfort Canada EVOX G3 page, EVOX G³ brochure, Midea Building Technologies AtomX brochure).

08 · Did you know?

Eight things to know about the Atom X.

Tap a card to flip it: each number’s source is on the back.

1 / 8
  1. 01Atom X 5.0 t1.73COPThe best COP at -30 °CTap for the explanation
    01

    At -30 °C, the 5-ton Atom X keeps a COP of 1.73, the highest of our Midea units with a -30 °C point on the NEEP list. The 5-ton EVOX G3 follows at 1.69.

    NEEP list, data by AHRI number, Oct. 8, 2026.

  2. 02Atom X 2.5 t132%Well past the rating at 8 °CTap for the explanation
    02

    At 8 °C, the NEEP list gives up to 39,490 BTU/h for the 2.5-ton (rated 30,000 BTU/h), 60,600 BTU/h for the 4-ton and 66,000 BTU/h for the 5-ton.

    NEEP list, data by AHRI number, Oct. 8, 2026.

  3. 03Atom X 1.5 t19,100BTU/hStill above its rating at -15 °CTap for the explanation
    03

    At -15 °C, the 1.5-ton can still give up to 19,100 BTU/h, above its 18,000 BTU/h rating, per the NEEP list. Like any heat pump, its maximum output drops with the cold: 22,880 BTU/h at maximum at 8 °C.

    NEEP list, data by AHRI number, Oct. 8, 2026.

  4. 04Atom X 2.5 t12.5EER2The most efficient in a heat waveTap for the explanation
    04

    In hot-weather cooling, the 2.5-ton has the series’ best EER2, 12.5; the 5-ton, 10.1.

    ENERGY STAR, data by AHRI number, Oct. 8, 2026.

  5. 05Atom X 5.0 t52,000BTU/hTons shown, BTU certifiedTap for the explanation
    05

    In cooling, ENERGY STAR certifies the 2-ton Atom X at 23,000 BTU/h, the 3-ton at 34,000 BTU/h and the 5-ton at 52,000 BTU/h; the 5-ton pairs with a MIH54VMN10 air handler.

    ENERGY STAR, data by AHRI number, Oct. 8, 2026.

  6. 06Lines3/8 + 5/8in.Thinner lines up to 3 tonsTap for the explanation
    06

    Per our product data, the Atom X uses 3/8 and 5/8 in. lines from 1.5 to 3 tons, and 3/8 and 3/4 in. at 4 and 5 tons. The EVOX G3 takes 3/4 in. at every size.

    Our airgreen.ca product pages, Oct. 8, 2026 ; Midea EVOX G³ homeowner brochure.

  7. 07ENERGY STAR2026A brand-new seriesTap for the explanation
    07

    All six Atom X were certified ENERGY STAR cold climate in April 2026 (April 17 and April 22).

    ENERGY STAR, data by AHRI number, Oct. 8, 2026.

  8. 088 °C3.50–3.80COPThe COP in mild weatherTap for the explanation
    08

    At 8 °C, the Atom X has a rated COP of 3.50 (5-ton) to 3.80 (1.5-ton), per the NEEP list.

    NEEP list, data by AHRI number, Oct. 8, 2026.

Swipe to see the other cards, tap a card to flip it.

09 · Warranty

The Atom X warranty, confirmed in writing with the quote.

The Atom X comes from Midea Building Technologies’ VRF range. Its warranty is not in Midea Comfort’s residential limited warranty: we give it to you in writing before you sign.

Before you sign

Parts and compressor terms, registration conditions and exclusions, in black and white.

Licensed installer

Installed by a licensed contractor: AirGreen, RBQ 5645-9605-01.

Prefer Midea’s residential warranty?

The EVOX G3 is covered by Midea’s limited warranty: up to 12 years on parts and compressor if registered within 60 days. See the EVOX G3.

10 · Dealer

AirGreen — MIDEA PRO dealer

AirGreen, Midea PRO dealer

MIDEA PRO dealer: recognized expertise across the whole residential and commercial range.

Warranty given in writing with the quote, before you sign.

Specialized MIDEA technical training completed: installation to the manufacturer’s standards, advanced diagnostics and certified service.

Full command of MIDEA systems, from selection to start-up, including preventive maintenance and specialized repairs.

Priority access to original parts for after-sales service, cutting response times.

Privileged access to PRO programs and new technology, in Montreal, Laval, Longueuil, the North Shore, the South Shore and Montérégie.

1Free visit

We look at your ducts, the electrical panel, the room for the indoor unit and the spot for the outdoor unit.

2Clear quote

The series, the size, backup heat if needed, the AHRI number and the indicative LogisVert amount.

3Installation and start-up

Duct connection, vacuum, refrigerant charge, airflow setting, heating and cooling tests.

4Warranty and LogisVert

We give you the AHRI number and the papers for your Hydro-Québec application.

11 · Video

The Atom X, on video.

MIDEA · AIRGREENAtom XThe central unit from Midea’s VRF range · 2:57

Worth watching before the visit

The video shows the Atom X. We go over it again at the visit, with your ducts and electrical panel in view.

12 · Our Midea installs

5 Atom X installs published.

Each article on our blog shows a real install: the outdoor unit, the indoor unit, the duct connection.

Midea Atom X central heat pump · Saint-Lambert
Midea Atom X central heat pump · Saint-LambertPublished July 27, 2026
Midea Atom X central heat pump · Saint-Bruno
Midea Atom X central heat pump · Saint-BrunoPublished June 18, 2026
Midea Atom X central heat pump · La Prairie
Midea Atom X central heat pump · La PrairiePublished May 20, 2026
Midea Atom X central heat pump · Saint-Constant
Midea Atom X central heat pump · Saint-ConstantPublished May 15, 2026
Midea Atom X central heat pump · Sainte-Dorothée
Midea Atom X central heat pump · Sainte-DorothéePublished Mar. 29, 2026
All our installs
13 · Our installs by region

5 Atom X published: here is where.

A recent series for us: every install counts.

South Shore 4 published installs

  • La Prairie
  • Saint-Bruno
  • Saint-Constant
  • Saint-Lambert

AirGreen’s Nos réalisations blog, as of Oct. 8, 2026: of 5 “Atom X” articles, 5 name a place (municipality, borough, area or shore), and those are the ones counted here. One article = one published install.

14 · True or false?

Five questions about the Atom X.

Answer, then read why.

Question 1 / 5Score 0

  1. “The 5-ton Atom X has the best COP at -30 °C of our Midea units.”

    True. 1.73, per the NEEP list.

    NEEP list, data by AHRI number, Oct. 8, 2026.

  2. “The Atom X uses the same lines as the EVOX G3 at every size.”

    False. From 1.5 to 3 tons, 3/8 and 5/8 in. per our data; the EVOX G3 takes 3/4 in. everywhere.

    Our airgreen.ca product pages, Oct. 8, 2026.

  3. “All six Atom X are ENERGY STAR cold climate certified.”

    True. All six, since April 2026.

    ENERGY STAR, data by AHRI number, Oct. 8, 2026.

  4. “At -15 °C, the 1.5-ton Atom X can still exceed its rated output.”

    True. Up to 19,100 BTU/h at maximum, for a rated 18,000 BTU/h. Its maximum output does drop with the cold (22,880 BTU/h at 8 °C).

    NEEP list, data by AHRI number, Oct. 8, 2026.

  5. “At 8 °C, the 2.5-ton Atom X can exceed 39,000 BTU/h.”

    True. 39,490 BTU/h at maximum, per the NEEP list.

    NEEP list, data by AHRI number, Oct. 8, 2026.

15 · Frequently asked questions

What people ask us about the Atom X.

Both are 1.5 to 5-ton central units that run down to -30 °C according to Midea. The EVOX G3 is Midea Comfort’s modular central unit, with 100% of the heat stated down to -25 °C; at -30 °C, the NEEP list gives 11,800 BTU/h to 37,300 BTU/h depending on size. The Atom X comes from Midea’s VRF range: 8,270 BTU/h to 18,500 BTU/h at -30 °C. Most of our published Midea central installs are EVOX G3.

AirGreen × MIDEAMIDEA PRO dealerAtom X · 1.5 to 5 tonsDown to -30 °CLogisVert checked by AHRIMontreal · Laval · Longueuil · South Shore · North Shore
AirGreen · Heating & cooling

Your Atom X, picked with you and installed by AirGreen.

We come and see your ducts and panel, confirm the size with you, then you get a clear quote: the combination, the AHRI number and the indicative LogisVert amount.

Book my free estimate514 316-2973

Hydro-Québec does not solicit anyone by phone or door to door 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
MIDEA PRO dealerWall, multi-zone, central
Showroom1370, rue Joliot-Curie, local 712, Boucherville

Sources checked on October 8, 2026

  1. ENERGY STAR, Certified Air-Source Heat Pumps (dataset w7cv-9xjt): twelve EVOX G3 and Atom X combinations by AHRI number, data of Oct. 8, 2026.
  2. NEEP, Cold Climate Air Source Heat Pump List (ashp.neep.org): maximum heat at -30 °C, consulted Oct. 8, 2026.
  3. Midea Comfort Canada (mideacomfortna.ca): EVOX G3 page; MAUSE / MO1HE / MO1SE submittal sheets and EVOX G3 indoor unit service manual, as used on our MIDEA page (Oct. 6, 2026).
  4. Midea, EVOX G³ homeowner brochure: EVI, ICE circuit, six positions, screwless latches, 31.5 dB(A) indoors.
  5. Midea Building Technologies, AtomX brochure (hvac.midea.com, file of March 7, 2025): mini VRF, -30 °C to 52 °C, automatic charging, piping lengths, R-454B.
  6. Midea limited warranty for Canada (rev. 12.2024, September 2026 edition), consulted Oct. 6, 2026.
  7. Hydro-Québec, LogisVert residential participation guide, version 1.10, Sept. 15, 2026; eligible heat pump search tool, consulted Oct. 6, 2026.
  8. AirGreen, “Nos réalisations” blog: 235 Midea central installs published as of Oct. 8, 2026, including 214 EVOX G3 and 5 Atom X.
  9. airgreen.ca product pages (combinations, AHRI numbers), Oct. 8, 2026.

LogisVert amounts are indicative: Hydro-Québec confirms them when you apply. Prices on quote.

Prices on quote. Free home estimate.
The Atom X shop

All six Atom X units, right below.

Open the product page: the combination, the dimensions, the AHRI number and the indicative LogisVert amount.

MIDEA