TCL Ultimate 25 Wall-Mounted Heat Pump | 12000 BTU

The best cold-weather efficiency in the entire lineup, in the format most widely sold in Quebec

The TCL Ultimate 25 12,000 BTU wall-mounted heat pump holds a special place in the series. It is not the highest-capacity model, but it has the most convincing cold-weather heating figures—and that is precisely what matters in a Quebec winter.

One figure sums it all up: a COP of 3.01 at -8 °C. No other capacity in the lineup reaches this level at this temperature. This means that on a typical January night in Laval or Longueuil, this unit delivers three times more thermal energy than it consumes in electricity.

Let's translate this COP into dollars

Technical data sheets speak in coefficients; homeowners think in bills. Let's make the conversion.

An electric baseboard heater has an efficiency of 1.0: one kilowatt-hour purchased provides one kilowatt-hour of heat. There is no room for improvement; it is a physical limit. The Ultimate 25's 12,000 BTU model has a COP of 3.01 at -8 °C and 4.00 at 8.3 °C. During the part of the season when temperatures hover around the freezing point—that is, most of October, November, March, and April in southern Quebec—you pay between one-quarter and one-third as much to heat this space as you would with baseboard heaters.

Even in the depths of winter, the advantage holds. At -15 °C, the COP remains at 1.80: still nearly twice the efficiency of resistance heating, at a temperature when many catalog models have already switched to their backup heating element.

Certified capacities, with no favorable rounding

Here are the figures listed in the NEEP cold-climate heat pump directory, based on AHRI-certified testing:

• 12,000 BTU/h at 8.3 °C — COP 4.00
• 12,000 BTU/h at -8 °C — COP 3.01
• 12,000 BTU/h at -15 °C — COP 1.80
• 7,100 BTU/h at -30 °C at maximum capacity — COP 1.22

The consistency of the first column is the important point. The unit maintains 100% of its rated capacity down to -15 °C. This is not the case with most wall-mounted units sold in Quebec, which begin to lose power at -5 or -10 °C. This flatness of the curve is what makes honest sizing possible, without having to rely on supplemental heat from the first cold snaps.

For what spaces, specifically

We install this size most often in:

• an open-concept kitchen-living room of 400 to 600 square feet in a condo or bungalow;
• a bedroom floor served by a central hallway, when airflow allows it;
• a fully finished basement, where the 9,000 BTU model would be barely adequate;
• an entire triplex unit, supplementing the existing base heating system.

Floor area alone does not determine anything. A 500-square-foot open-concept area with a full south-facing wall of windows and a nine-foot ceiling does not have the same load as a room of the same size in a well-insulated interior unit. We perform the calculation before making a recommendation, and we regularly advise someone who came looking for the 12,000 BTU model to choose the 9,000 BTU model instead.

Technical data sheet

• Indoor unit : H12SUH25XGE — Outdoor unit : H12SUH25XGC
• AHRI certificate : 216506201 — ENERGY STAR number : 3891377
• Efficiency: 25 SEER2, 14.0 EER2, 10.5 HSPF2
• Refrigerant : R-454B
• Power supply: 220 V — MCA 12 A, MOP 20 A
• Piping: 1/4 in liquid, 3/8 in gas
• Airflow: up to 470 CFM
• Sound level: 32 to 46 dB(A) indoors, 57 dB(A) outdoors
• Indoor dimensions: 36.25 x 7.69 x 12.06 in — outdoor: 34.00 x 13.75 x 23.69 in
• Louvers: motorized vertical and horizontal swing
• Wi-Fi and voice control: included as standard

A $1,440 incentive to validate before the work, not afterward

This model is included on Hydro-Québec's lists of equipment eligible for the LogisVert program. For an owner of an existing home, the incentive amounts to $1,440. In new construction, it reaches $1,680.

Two details that few people know about and that can be costly when learned too late. First, the application must be submitted within nine months of installation: after that deadline, the amount is forfeited, with no recourse. Second, the lists of eligible equipment are revised periodically and the amounts change. We therefore verify eligibility and the exact amount at the time of quotation, never from memory, and prepare the required documents so the application is submitted properly.

The R-454B refrigerant, and why it changes the game during installation

The Ultimate 25 operates with R-454B, which is gradually replacing R-410A in the industry. Its global warming potential is approximately five times lower, which is the regulatory reason for the transition. But it also has a practical implication on the job site: it is an A2L-classified, mildly flammable refrigerant, and handling it requires suitable tools and methods.

In practical terms, this means more rigorous vacuum evacuation, systematic leak detection, and strict adherence to piping lengths and additional charge requirements. An installer who treats an R-454B system like an old R-410A system produces one that works the first winter and then deteriorates. Our teams are trained and equipped for these refrigerants; this is not a sales pitch, but a basic requirement.

The sizing errors we see most often

• Trying to heat two floors with a single wall-mounted unit. Warm air rises, but it does not go around walls. A 12,000 BTU unit on the ground floor will not heat the upstairs bedrooms, regardless of its efficiency.
• Installing it in a corner. A wall-mounted unit placed at the end of a room, blowing toward a wall three feet away, circulates nothing. The built-in thermostat then reads a temperature that is not the room's actual temperature.
• Overlooking closed doors. A bedroom with the door closed is thermally a separate room. If that bedroom's comfort matters, either a dedicated solution or a planned air transfer is required.
• Choosing based on the area stated by the manufacturer. These figures assume average insulation and an average climate. Montréal's building stock corresponds to neither.

What we verify before recommending this unit

At AirGreen, a quote for a wall-mounted heat pump systematically includes an assessment of the actual load of the area to be treated, verification of the available capacity at the electrical panel, examination of the piping route and outdoor unit location, and confirmation of eligibility for assistance programs.

We work daily in buildings where the outdoor unit must accommodate a narrow alley, a rear balcony, a municipal noise regulation, or an immediate neighbor. These constraints are addressed during the visit, not on the day of installation.

Contact AirGreen for a complete quote on the 12,000 BTU TCL Ultimate 25, including load calculation, electrical verification, and assistance with your LogisVert application, in Montréal, Laval, Longueuil, on the North Shore, and on the South Shore.