CANAIR 4C28 Wall-Mounted Heat Pump | 18,000 BTU - R454B | Montreal, South Shore, North Shore

In stock
SKU: 4C28SCH18H21
18,000BTU/h · cooling capacity
−30 °Cheats down to
$2,160LogisVert grant
ENERGY STAR® · cold climateOptional Wi-FiRefrigerant R-454B10-year warranty
Talk to a technician · 514 316-2973
Model number (outdoor)4C28SCH18H21
Model number (indoor)4C28SEH18H21
AHRI215449719

CANAIR performance for Quebec comfort

At AirGreen, we know that lasting comfort at home takes a reliable, energy-efficient heat pump built for our harsh winters. That is exactly what the CANAIR 4C28 – 18,000 BTU offers: a ductless wall-mounted heat pump designed for cold climates like Quebec’s, combining power, technology and durability. The CANAIR brand is distributed in Quebec by Descair, a Quebec family business founded in 1971.

A heat pump made for real cold

The CANAIR 4C28 keeps heating down to -30°C and is ENERGY STAR® cold climate certified. According to NEEP, it delivers 18,000 BTU/h at -8°C (COP 2.55) and 18,000 BTU/h at -15°C (COP 1.92). Its R-454B refrigerant has a global warming potential of 466, compared with 2,088 for R-410A.

In numbers:

  • SEER2: 21.4, for high cooling efficiency;

  • HSPF2: 11.0, for economical heating;

  • EER2: 12.5;

  • Capacity: 18,000 BTU, suited to many medium-sized homes.

Inverter technology: efficiency and smart comfort

The CANAIR 4C28’s built-in inverter technology continuously adjusts compressor output to actual demand. The result:

  • A stable temperature, without sudden swings;

  • Lower energy use than an on/off unit;

  • Very quiet operation, perfect for bedrooms or rest areas.

No more on/off cycles: inverter technology keeps comfort steady while minimizing compressor wear.

Tailored comfort and details that make a difference

The 4C28 series includes many features designed for everyday life:

  • Turbo mode to quickly reach the desired temperature;

  • Self-cleaning function that limits mould in the indoor unit;

  • Silent mode (as low as 19.5 dB(A) indoors);

  • Follow Me function, which holds the temperature around the remote control;

  • Automatic restart after a power outage;

  • Outdoor heating cables that prevent ice on the base and around the compressor;

  • Optional Wi-Fi control, for remote control from your phone.

Robust construction and precise engineering

  • TU1 copper coil, known for its corrosion resistance;

  • Built-in multi-function board, limiting unnecessary energy use;

  • Automatic A2L refrigerant detection, for safety;

  • Compact design: 40.06 × 9.72 × 12.60 in indoor unit and 35.04 × 13.46 × 26.50 in outdoor unit.

A warranty that matches the performance

The CANAIR 4C28 series is covered by a 10-year warranty on parts and compressor, plus 6 years on labour. An extended labour warranty is available beyond the 6 years included.

And as always at AirGreen, you get:

  • A free on-site estimate;

  • Transparent prices, with no surprises at the end;

  • Installation by experienced refrigeration technicians, under AirGreen’s RBQ licence 5645-9605-01;

  • And payment only at the end of the work, when you are completely satisfied.

An environmentally friendly and economical heat pump

Choosing the CANAIR 4C28 is a step toward a greener future. Running on electricity, it reduces greenhouse gas emissions compared with combustion systems.

It is on the list for Hydro-Québec’s LogisVert program, with an indicative amount of $2,160 for this model; only Hydro-Québec confirms the aid granted.

A solution for every home

Whether you live in a condo in Montreal, a single-family home in Laval or a property on the South Shore, the CANAIR 4C28 series adapts to your needs with single-zone and multi-zone versions.

AirGreen: expertise, transparency and service

For more than 15 years, AirGreen has been completing reliable, clean and efficient HVAC installations across Greater Montreal. We don’t just install a heat pump: we create a comfort experience suited to your home and budget. To see installations completed by our teams, visit our Our projects page.


Conclusion: a logical, lasting choice

The CANAIR 4C28 Wall-Mounted Heat Pump – 18,000 BTU – R454B is more than a heating and cooling unit: it is an investment in your comfort, energy efficiency and peace of mind.

With its clean design, advanced technology, heating down to -30°C and 10-year warranty, it offers excellent value.

At AirGreen, we believe smart comfort should never be a luxury.


Contact AirGreen today for a free estimate, personalized advice or a turnkey installation in Montreal, Laval, Longueuil, the North Shore or the South Shore.

AirGreen Air Conditioning & Heating
4951 Ste-Catherine Street East, Montreal | (514) 316-2973
RBQ: 5645-9605-01
sales@airgreen.ca

Warranty: 10 years on the compressor, 10 years on parts and 6 years on labour, directly from the distributor.