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Wall heat pumpsTRANE RunTru wall heat pumps, 9,000 to 24,000 BTU/hSold and installed by AirGreen. We install across Montreal, Laval, Longueuil, the South Shore and the North Shore.
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TRANE wall heat pumps

TRANE wall heat pumps: RunTru 23 or 17?

8 models, two series, four sizes. According to Trane, the RunTru 23 heats down to −30 °C and the RunTru 17 down to −20 °C. Below, the two side by side, size by size, with the figures Trane publishes.

Book my free estimateSee the 8 models
Updated October 29, 2026. Figures from Trane’s documents and the sources listed at the bottom of the page.
8models on this page
−30 °CRunTru 23, heating per Trane
−20 °CRunTru 17, heating per Trane
23SEER2 for the RunTru 23, against 16 to 18 for the 17
Our reading of the figures

If the unit has to heat on nights below −20 °C, the RunTru 23: Trane publishes its heating down to −30 °C, and the RunTru 17’s only down to −20 °C. In the 12,000 BTU/h size, at −20 °C, the RunTru 23 gives 7,794 BTU/h and the RunTru 17, 6,800 BTU/h.

Sold and installed by AirGreenRunTru 23: published heating down to −30 °CRunTru 17: down to −20 °CFree on-site estimate
The models

The 8 TRANE wall heat pumps

Price on quote, after the free on-site estimate.

RunTru 23 · 4RunTru 17 · 4
TRANE
TRANETRANE
01 · Head to head

Same size: what changes between the 23 and the 17

Pick a size. The two columns give the figures Trane publishes for each series: the 2024 sell sheets, the 2022 heating tables and the installer’s guides.

Size
Trane figure
RunTru 23
RunTru 17
SEER2cooling
23
16.5
HSPF2heating
9
8.5
EER2cooling on a hot day
12.5
8.7
Heat at −20 °Croom at 20 °C, Trane table
7,794 BTU/h
6,800 BTU/h
Heats down tooutdoor temperature
−30 °C
−20 °C
Cools down tooutdoor temperature
−29 °C
−18 °C
Outdoor soundat 1 m
52 dB(A)
52 dB(A)
Indoor, lowest speedat 1 m
27 dB(A)
30 dB(A)
Line setliquid – gas
1/4 – 1/2 in
1/4 – 3/8 in
Longest run, highest liftinstaller’s guide
20 m / 10 m
20 m / 10 m
Meteringrefrigerant flow
electronic valve
capillary tube
Compressorvariable speed
rotary
rotary
RunTru 237,794 BTU/h
RunTru 176,800 BTU/h
See the 12,000 BTU/h RunTru 23See the 12,000 BTU/h RunTru 17

Sources: Trane sell sheets 26-1063-04 and 26-1061-04 (2024); Trane submittals M4THS23…-SUB-1B and M4MHW17…-SUB-1B (August 5, 2022); installer’s guides 88-M4MHW23-1A (2021) and 88-M4MHW17-1B (2023). Trane notes that its heating tables describe normal operation, not certified values.

TRANETRANE
02 · The two series

RunTru 23 and RunTru 17, each with its own page

RunTru 23

  • Published heating down to −30 °C
  • SEER2 23 on all four sizes
  • 4 models, 9,000 to 24,000 BTU/h
The RunTru 23, degree by degree

RunTru 17

  • Published heating down to −20 °C
  • SEER2 16 to 18 depending on size
  • 4 models, 9,000 to 24,000 BTU/h
See the RunTru 17
TRANETRANE
03 · Did you know

Three details from Trane’s own documents

01

Three of the four RunTru 17 units meter refrigerant through a capillary tube; only the 24,000 has an electronic expansion valve, like all four RunTru 23 units.

Trane submittals, August 5, 2022
02

Trane caps the indoor unit’s mounting height at 3.5 m (11.5 ft) from the floor to the underside of the unit.

Installer’s guides 88-M4MHW23-1A and 88-M4MHW17-1B
03

If the indoor and outdoor units don’t belong together, the system shows error code LP: mismatched units.

Trane installer’s guides, error code list
04 · Who does what

The unit is TRANE, the installation is AirGreen

TRANE

What Trane brings

  • The RunTru units, their sheets and their heating tables
  • Its limited parts warranty: in most cases 5 years, or 10 years if the unit is registered within 60 days of installation (residential and multi-family use)
  • The installation rules in its guides
05 · Questions

What people ask us about TRANE wall units

Which one heats better in Montreal?
The RunTru 23. From −20 °C to −4 °C, Trane’s tables give it more heat than the RunTru 17, in all four sizes. Below −20 °C, only the RunTru 23 has a published heating range, down to −30 °C. The RunTru 23 page shows its heat degree by degree.
Are these wall units ENERGY STAR certified?
No. Trane’s RunTru 23 sheets still carry the ENERGY STAR logo, but no M4THS unit is in the current Canadian ENERGY STAR list (checked October 28, 2026). Trane does not present the RunTru 17 as ENERGY STAR.
Is there a LogisVert grant on these models?
No, under the current rules. For a heat pump installed since November 26, 2025, Hydro-Québec requires ENERGY STAR certification (its LogisVert residential page; participation guide, version 1.10), and these models are not on the ENERGY STAR list. Only Hydro-Québec confirms the assistance granted.
Which refrigerant do they use?
R-410A, for both series, per Trane’s installer’s guides.
Is Wi-Fi built in?
No. Trane’s wiring diagrams show a Wi-Fi module as an option, with no published part number. The handheld remote is included.
What size for my room?
The on-site visit sets it: we look at the room, the insulation, the windows and how you use it, and the written quote gives the size.
AirGreen
AirGreen × TRANE

A TRANE wall unit in your home, installed by AirGreen

We come and see the room, we measure, and you get a written quote that says which RunTru and which size.

Book my free estimateCall 514-316-2973
RBQ 5645-9605-01Subclasses 15.8, 15.10 and 16. Gas and oil work: a partner holding the required licence.
On-site estimateFree, with a written quote.
Showroom1370 Joliot-Curie Street, Suite 712, Boucherville.
HoursMonday to Thursday, 8 a.m. to 6 p.m.; Friday, 8 a.m. to 4 p.m.
AirGreenTRANESold and installed by AirGreen

Sources checked on October 28, 2026

  1. Trane, 23 Series Single Zone sell sheet, 26-1063-04 (2024)
  2. Trane, 17 Series Single Zone sell sheet, 26-1061-04 (2024)
  3. Trane, submittals M4THS2309A, 2312A, 2318A and 2324A-SUB-1B-EN (August 5, 2022), runtruhvac.com
  4. Trane, submittals M4MHW1709A, 1712A, 1718A and 1724A-SUB-1B-EN (August 5, 2022), runtruhvac.com
  5. Trane, 23 Series installer’s guide, 88-M4MHW23-1A-EN (November 22, 2021)
  6. Trane, 17 Series installer’s guide, 88-M4MHW17-1B-EN (March 16, 2023)
  7. RunTru, Warranty page
  8. ENERGY STAR, certified heat pumps (dataset w7cv-9xjt)
  9. Hydro-Québec, LogisVert residential, conditions page
  10. Hydro-Québec, LogisVert residential participation guide, version 1.10 (September 15, 2026, in French)