NOVAIR Hyper Heat Wall-Mounted Air Conditioning Heat Pump (-35°C) | 18,000 BTU

• NOVAIR ULTRA HEAT: BROCHURE
• NOVAIR HYPER HEAT: BROCHURE

A wall-mounted heat pump designed for Quebec winters

The NOVAIR Hyper Heat 18,000 BTU wall-mounted heat pump/air conditioner is designed for homeowners who want a heating and cooling system capable of withstanding the harsh winters of Montreal , Laval , Longueuil , the North Shore , and the South Shore . With heating capacity maintained down to -35°C , dual ENERGY STAR® and ENERGY STAR® Cold Climate certifications, and a design adapted to Canadian conditions, this unit is an ideal central solution for a large open area or an entire floor.

At AirGreen, we recommend this model for single-family homes, semi-detached houses, large condos, and some small businesses that need a reliable unit to provide comfort in an area of ​​approximately 750 to 1,000 square feet, depending on the building's insulation and layout. We analyze the structure, air volume, orientation of the house, and the electrical system before confirming that this NOVAIR wall-mounted heat pump is the right choice for your project.

A device adapted to the climate of Montreal, Laval and Longueuil

Quebec winters quickly expose the limitations of entry-level units. The NOVAIR Hyper Heat series was developed to operate where other systems slow down, freeze, or shut down. Heating capacity down to -35°C isn't just an impressive spec sheet; it translates into real warmth in your living room or open-plan space on January and February nights.

The outdoor unit incorporates a heated defrost tray and a compressor heating belt . These features prevent the crankcase from filling with ice and the base from freezing, situations that typically cause noise, vibration, and premature shutdowns. The defrost cycle is also optimized to minimize the number of times it switches to defrost mode, thus improving temperature stability inside.

A variable-speed compressor for added comfort

The NOVAIR Hyper Heat 18,000 BTU uses inverter technology: the compressor automatically adjusts its speed to match the actual demand. Instead of running at full power and then shutting off, the compressor continuously modulates:

• When the part needs a significant input (for example at startup), the compressor increases its speed;

• When the temperature stabilizes, it slows down, which reduces electricity consumption;

• Temperature differences are smaller, comfort is more stable, and variations in hot or cold air are less noticeable.

This modulation contributes to a better SEER2 in air conditioning, a high HSPF2 in seasonal heating, as well as an advantageous COP for your electricity bills.

Actual capacity and cold weather performance

The heat pump's rated capacity is 18,000 BTU in cooling mode. In heating mode, the system is sized to maintain high output even when the outside temperature drops.

• At approximately -8°C , the heat pump still provides nearly 15,000 BTU ;

• at around -15 °C , it maintains its nominal capacity of 18,000 BTU ;

• down to -35 °C , it continues to provide useful heat, which reduces the need for auxiliary heaters.

In a typical Montreal or Laval home with an open-concept main floor, this translates to a stable indoor temperature between 21 and 23°C, even during cold snaps. For homeowners switching from electric baseboard heating to a wall-mounted heat pump , the perceived comfort and heat distribution are often the first noticeable differences.

Energy efficiency and potential savings

The entire design of this wall-mounted air conditioning heat pump aims to reduce annual electricity consumption:

• variable speed compressor;

• multi-speed indoor fan;

• intelligent defrosting management;

• Control electronics optimized for cold climates.

By replacing a significant portion of the heating system with electric baseboard heaters or an older system, the NOVAIR Hyper Heat 18,000 BTU often allows for heating savings of up to 60%, depending on the specific circumstances, building configuration, and usage patterns. The exact difference depends on the number of operating hours, set temperatures, and insulation level, but over several winters, the investment typically pays for itself very well, especially with available subsidies .

Quiet operation and acoustic comfort

Comfort isn't just measured in degrees Celsius. Noise level is crucial in a living room, bedroom, or office. The NOVAIR Hyper Heat indoor unit can operate at as low as 25 dB(A) , a level comparable to a whisper. Even at higher speeds, air movement remains controlled.

The outdoor unit operates at approximately 59 dB(A) , which is perfectly acceptable in a residential environment. During installation, we pay particular attention to:

• at the level of unity;

• to the distance from the windows;

• in the vicinity of neighbors;

• due to the presence of reflective surfaces (brick walls, fences, etc.).

This approach allows us to install the wall-mounted heat pump in a way that limits noise perception, both for you and your neighbors.

Air quality and indoor comfort

The NOVAIR Hyper Heat 18,000 BTU does more than just heat and cool. It also contributes to indoor air quality thanks to:

• to an optimized filtration system that retains dust and certain suspended particles;

• to treatments on the internal heat exchanger that limit the accumulation of moisture and contaminants;

• to specific modes that help manage humidity, especially in summer.

Regular basic maintenance, primarily filter cleaning , helps maintain good air quality, preserve energy performance and limit premature wear of components.

Smart features and everyday comfort

This model meets current expectations for comfort and connectivity. The NOVAIR Hyper Heat 18,000 BTU heat pump comes standard with:

• Built-in WiFi : complete control via a phone or tablet, wherever you are, ideal for adjusting the temperature before you get home;

• Time scheduling : setting personalized schedules for workdays, evenings, nights and weekends;

• Turbo mode : quick adjustment to comfort when a room has been left colder or warmer;

• automatic control of the shutters : motorized vertical and horizontal shutters to direct the air where it is most useful;

• automatic restart after a power outage with parameter memory;

• abnormal conditions detection system (for example, in case of refrigerant shortage or extreme outside temperature).

In everyday use, these features translate into simple operation: you set the desired temperature, then you let the system work in the background.

Robust construction and corrosion protection

The climate of Montreal, Laval, Longueuil, and the South Shore puts the outdoor unit to the test: snow, salt, calcium, rain, and freeze/thaw cycles. The NOVAIR Hyper Heat 18,000 BTU is designed for these conditions thanks to:

• an external heat exchanger treated to resist oxidation;

• components that have undergone prolonged testing in a saline atmosphere;

• a box designed to evacuate meltwater during defrosting cycles;

• electronic protections against overvoltages and abnormal conditions.

For properties particularly exposed to wind and snow, we frequently add a protective roof and raised supports to keep the unit clear of accumulated snow. This type of detail extends the equipment's lifespan and reduces the risk of problems in the depths of winter.

Key technical data to remember

For owners and professionals who want an overview of key figures, here are some important technical details:

• Interior model : 2LEA18UUSK-I

• Exterior model : LEA18SZ35SK-O

• AHRI Number : 211709684

• Refrigerant : R-410A

• Cooling capacity : 18,000 BTU

• Declared heating capacity : down to -35°C

• Power supply voltage : 220 V single phase

• MCA (Minimum circuit ampacity) : 16 A

• MOP (Maximum Overcurrent Protection) : 25 A

• Refrigeration piping : 1/4 – 1/2 in

• Indoor noise level : 25 / 46 dB(A)

• Outdoor noise level : 59 dB(A)

This information guides the selection of the circuit breaker, cables, and the design of the refrigeration line. When AirGreen takes over the project, we coordinate these aspects to ensure your installation meets the manufacturer's requirements and applicable electrical standards.

LogisVert Provincial Subsidy

This model is eligible for the LogisVert provincial grant program, with financial assistance of $1,800 (updated November 26, 2025). This amount reduces the total cost of the project and further improves the long-term profitability of the wall-mounted heat pump .

We support our clients in:

• verification of the eligibility of their residence;

• the preparation of the necessary documents;

• the transmission of the required technical information;

• coordination between the installation and the grant application.

AirGreen Installation and Service: An Approach Based on Field Experience

Concrete example: project in a semi-detached house in Longueuil

In a semi-detached house in Longueuil , the owners were heating solely with electric baseboard heaters. Their goal was to reduce their heating costs and achieve a more consistent temperature on the main floor. After an on-site visit, we recommended a NOVAIR Hyper Heat 18,000 BTU wall-mounted heat pump installed in the living room, positioned to distribute warm air throughout the open-concept area and towards the staircase leading to the upper floor.

After the first full winter, the observed results were:

• a significantly reduced use of baseboards on the ground floor;

• a more pleasant comfort, without cold spots near the windows;

• better distributed electricity consumption, with more energy used by the heat pump and less by resistive heaters.

Other achievements in Greater Montreal

We regularly install this model in:

• bungalows in Laval where the ground floor is completely open;

• condos in Montreal with large windows overlooking the city centre;

• homes on the North Shore and South Shore where the priority is reliability during periods of extreme cold;

• small offices and professional premises that need a discreet, efficient and easy-to-control system.

In each case, we adjust the installation height, the length of the refrigeration line, the condensate management and the choice of supports (wall-mounted, on a base, with or without protective roofs) to obtain a clean, durable and accessible result for maintenance.

Our HVAC installation process

Our approach to HVAC installation is structured, transparent, and experience-based:

1. Free on-site assessment
   We travel to Montreal, Laval, Longueuil, the North Shore and the South Shore to analyze the house, the room layout, the electrical panel, the exterior clearances, the condensate drainage and the neighborhood constraints.

2. Recommendation of the correct tonnage
   We validate whether the NOVAIR Hyper Heat 18,000 BTU is the right choice or if a different tonnage is more suitable, depending on the insulation, the surface area and the reality of your building.

3. Detailed quote and transparent pricing
   Before starting any work, we provide a clear final quote . The accessories, the necessary work, and the terms and conditions are all specified. There are no unpleasant surprises at the end.

4. Electrical coordination
   Depending on the situation, we coordinate the work with a master electrician for the dedicated 220V line, the appropriate circuit breaker (respecting the MCA and MOP of the device) and the Code requirements.

5. Installation by experienced refrigeration technicians
   Our technicians install the supports, drill through the walls, pull the copper lines, ensure the slope of the drainage systems, perform the vacuuming, check for leaks and carry out the complete commissioning.

6. Configuration and explanations
   We adjust the basic settings, connect the WiFi if desired, explain the remote control modes and provide basic maintenance instructions.

7. After-sales service
   In case of questions, unusual noises or doubts, our service team intervenes to diagnose the situation and, if necessary, process the warranty claim with the NOVAIR network.

Warranty and parts availability

The NOVAIR Hyper Heat 18,000 BTU comes with a 10-year warranty on the compressor and 10-year warranty on parts when installed and registered according to the guidelines. Additional labor warranty programs may also be available, which in some cases can cover a significant portion of repair costs for several years.

Thanks to our Canadian distribution network, common replacement parts are usually readily available. When a diagnostic confirms a defective part under warranty, we coordinate the order, delivery, and a second visit to perform the repair. This coordinated process avoids excessive delays and minimizes system downtime.

Recommended maintenance and common mistakes to avoid

To ensure a wall-mounted heat pump operates efficiently and for a long time, a few simple steps are essential:

• clean the filters of the indoor unit regularly;

• ensure that the outdoor unit is not buried under snow in winter;

• avoid placing objects in front of the device;

• do not block air vents with furniture or curtains;

• use the correct operating modes (heat mode in winter, cold mode in summer, avoid the poorly adjusted "Auto" mode).

The common errors we encounter during service visits are often related to:

• filters have been clogged for several months;

• outdoor units surrounded by snow, ice or leaves;

• remote controls left on inappropriate settings (dehumidification mode used in cold weather, for example).

Basic maintenance, supplemented occasionally by more in-depth professional maintenance, helps to maintain original performance and extend the life of your system.

Advantages of working with AirGreen

By entrusting your NOVAIR Hyper Heat 18,000 BTU wall-mounted air conditioning heat pump project to AirGreen, you will benefit from:

• from a company specializing in HVAC in Greater Montreal;

• from a team accustomed to working with the NOVAIR Hyper Heat series;

• a turnkey service : choice of model, electrical validation, installation, subsidies, after-sales service;

• transparent pricing and clear operation: we do not require any deposit , and you pay at the end when you are satisfied;

• easy access to our team via phone, email or showroom visit on the South Shore .

We operate weekly in Montreal , Laval , Longueuil , as well as on the North Shore and South Shore for installations, upgrades and replacements of existing systems.

Ready to switch to a heating and cooling solution tailored to your property?

If you want a system that can provide your main heating, efficiently cool your rooms in the summer and optimize your energy consumption, the NOVAIR Hyper Heat (-35 °C) 18,000 BTU wall-mounted air conditioning heat pump is a very interesting option for your house or condo in Montreal, Laval, Longueuil, on the North Shore or the South Shore.

Contact AirGreen now to:

• a 100% free home estimate;

• a specific recommendation on tonnage and location;

• a clear explanation of the available subsidies;

• an HVAC project handled from start to finish by experienced refrigeration technicians.