NOVAIR Ultra Heat Wall-Mounted Heat Pump/Air Conditioner (-25°C) | 24,000 BTU

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

High-performance comfort for large residential spaces in Greater Montreal

The NOVAIR Ultra Heat 24,000 BTU wall-mounted heat pump/air conditioner is designed for homeowners who demand serious, uncompromising heating and cooling comfort in a climate as demanding as Quebec's. With its stable heating capacity down to -25°C , quiet operation, and design tailored to local electrical conditions, it represents an HVAC solution particularly well-suited to homes in Montreal , Laval , Longueuil , as well as the North and South Shores .

At AirGreen, we install this model in single-family homes, duplexes, triplexes, condos, and small businesses. Its compact wall-mounted design allows it to be easily integrated into existing structures without major renovations, while offering a complete HVAC solution : air conditioning , heating , dehumidification , and light ventilation depending on the mode.

The goal is simple: to offer a device that truly works for you, summer and winter, while reducing the electricity bill compared to traditional all-electric heating.

An article structure centered on your actual needs

The following provides a complete overview of the NOVAIR Ultra Heat 24,000 BTU :

• what the device actually does for your comfort;

• important technical figures (BTU, noise level, electrical requirements);

• the types of housing where this model is particularly relevant;

• the way we install and maintain it at AirGreen;

• the impact on your energy costs and your peace of mind.

The NOVAIR Ultra Heat 24,000 BTU with AirGreen: a strategic investment for your comfort and your energy bills.

By choosing the NOVAIR Ultra Heat 24,000 BTU wall-mounted heat pump , you're investing in equipment capable of heating and cooling a large volume of air while maintaining energy efficiency. Combined with AirGreen's expertise in HVAC installation and maintenance , this unit becomes the central element of your home's comfort.

We systematically combine:

• a serious sizing (no oversized or undersized equipment);

• a thoughtful implementation of the internal unit;

• a refrigeration and electrical installation that complies with standards;

• support for subsidies and guarantees.

The result: a system that works well, for a long time, and remains pleasant to use on a daily basis.

Key technical specifications: the figures that really matter

Here are the key points that describe the core of the NOVAIR Ultra Heat 24,000 BTU :

• Rated cooling capacity: 24,000 BTU
  Ideal for large open areas (living room, kitchen, dining room combined), for an entire floor of a house, or for a small commercial space.

• Heating capacity down to -25°C
  The unit is designed to continue providing useful heat when the temperature is well below zero. Output remains high at -8°C (approximately 16,200 BTU) and significant at -15°C (approximately 15,500 BTU).

• R-410A refrigerant
  Widely used refrigerant, with well-managed parts and maintenance logistics throughout Quebec.

• Power supply voltage: 220 V
  The device connects to a dedicated electrical circuit, standard in residential settings.

• MCA (Minimum circuit ampacity): 22 A

• MOP (Maximum Overcurrent Protection): 30 A
  These values ​​guide the selection of the circuit breaker and wire gauge. During the estimate, we check your electrical panel, the availability of free space, and the overall capacity to ensure a safe connection.

• Refrigeration piping: 3/8 – 5/8 in
  This sizing allows for line lengths suitable for typical Montreal houses and multiplexes, with good oil return and stable heat pump performance.

• Indoor noise level: 28 / 48 dB(A)
  At low speed, the device becomes barely noticeable, making it ideal for a TV room, office, or master bedroom.

• Outdoor noise level: 60 dB(A)
  Easy compliance with usual municipal requirements when properly positioned, especially in narrow yards in Plateau, Villeray, Verdun or Longueuil.

• WiFi included
  The network connection allows you to control the wall-mounted heat pump from your smartphone, adjust the temperature, modes, and program schedules.

• Model numbers and certification:

  • Indoor unit: 2LEA24UUSK-I

  • Outdoor unit: LEA24SZ25SK-O

  • AHRI: 211709680

  • ENERGY STAR®: Yes

  • ENERGY STAR ID: 2448761

These technical references are essential for grant programs and for any service or warranty requests.

Designed for Quebec winters: what happens when it gets very cold?

A question that often comes up is: "Will the heat pump stop heating when it gets very cold?"

The NOVAIR Ultra Heat series was specifically designed to operate in harsh winter conditions:

• Components tested in prolonged corrosive environments;

• Compressor crankcase heater;

• Optimized defrosting management;

• Condensation tray heating on the outdoor unit.

In practice, this translates to:

• a heating capacity that remains usable even in very cold weather;

• fewer unexpected stops;

• less problematic icing under the outdoor unit.

In several homes in Laval and the North Shore , where nights at -25°C are frequent, we see the NOVAIR Ultra Heat 24,000 BTU heat pump continuing to provide a significant portion of the heating, while the baseboard heaters or electric furnace take over only when needed.

Energy efficiency and potential savings

The NOVAIR Ultra Heat 24,000 BTU boasts high SEER2 , HSPF2 and COP values ​​in its class, resulting in lower running costs compared to pure electric heating.

By replacing or supplementing baseboard heaters, convectors, or an electric furnace, many of our customers achieve:

• 30 to 60% reduction on their heating costs for areas covered by the heat pump;

• a significant decrease in periods of overconsumption during periods of extreme cold;

• improved point-by-point temperature control depending on the parts used.

A concrete example:

• In a Rosemont duplex, the second-floor apartment (a large 5 ½) was heated solely by baseboard heaters. Adding a well-positioned 24,000 BTU wall-mounted heat pump significantly reduced the electricity bill during the winter season, while also improving the temperature in the hallway and bedrooms.

Silence, comfort and air diffusion

One of the great advantages of this wall-mounted heat pump is its very low indoor noise level at low speed.

• At approximately 28 dB(A) , the device is discreet;

• At higher speeds, the airflow is significant, but remains within comfortable limits for a family living area.

Automatic control of the vertical and horizontal louvers facilitates air distribution:

• sweep mode to distribute air throughout the room;

• possibility of slightly directing the airflow away from the main living area to avoid unpleasant drafts;

• precise adjustments during installation, in order to take into account the actual configuration of the room.

Advanced features and WiFi control

The integrated WiFi module allows you to:

• Start or stop the device remotely;

• Change the temperature setting;

• Change mode (heating, air conditioning, dehumidification, ventilation);

• Schedule time slots (for example, lower temperature at night, and rising again before waking up).

Many of our clients, particularly in Longueuil and Boucherville , appreciate this feature when they own a main residence and a cottage: it becomes possible to prepare the comfort before arrival or adjust the temperature during extended trips.

For what types of homes is the NOVAIR Ultra Heat 24,000 BTU ideal?

This 24,000 BTU wall-mounted heat pump is well-suited for the following situations:

• Large open areas of 80 to 120 m² , with few partitions;

• Entire floors of a house, where there is good air transfer between rooms;

• Triplex or duplex apartments, often typical of Montreal , with a long central corridor;

• Small local shops, professional offices, salons or clinics.

In more compartmentalized homes, we can combine this main unit with other devices (additional mini-splits, another heat pump, or central units) to ensure homogeneous coverage, without forcing a single piece of equipment to do everything.

Examples of AirGreen installations in Greater Montreal

Project 1 – Triplex in Montreal (Rosemont–La Petite-Patrie)

• 5 ½ apartment with double living room, dining room and kitchen in a row;

• Original electric baseboard heaters in all rooms;

• Average insulation, recently installed windows.

Our solution:

• Installation of the NOVAIR Ultra Heat 24,000 BTU in the double living room, positioned to blow towards the hallway;

• Outdoor unit on wall bracket on the courtyard side, with sufficient clearance for maintenance and defrosting;

• Adjusting the programming to keep the baseboards in a simple supplementary mode.

Results :

• Significantly improved comfort in the corridor and the nearest rooms;

• Significant decrease in the use of baseboards during the day;

• Winter heating bill reduced by approximately 35 to 40% depending on the winter.

Project 2 – Bungalow in Laval

• Fully open ground floor, finished basement;

• Electric heating with baseboards throughout;

• North-facing, feels cold near the windows in the morning.

Our solution:

• NOVAIR Ultra Heat 24,000 BTU wall-mounted heat pump installed in the living room, positioned to cover the center of the house;

• Outdoor unit on a ground base, with sufficient clearance for defrosting and service operations;

• Demonstration to the family of the correct temperature and fan settings.

Results :

• More consistent temperature, fewer differences between the centre of the room and areas near the windows;

• Reduction in baseboard consumption, particularly during periods of extreme cold;

• Enhanced comfort in summer thanks to efficient air conditioning in the main area.

Project 3 – Townhouse in Longueuil (South Shore)

• House on three levels (basement, ground floor, upper floor);

• Open central staircase;

• Family occupation with varied hours.

Our solution:

• Installation of the indoor unit on the ground floor, with airflow directed towards the stairwell;

• Using the natural rise of warm air to temper the floor;

• Electric convectors should be kept in the bedrooms for targeted supplemental heating during periods of extreme cold.

Results :

• Marked reduction in temperature variations between the ground floor and the bedrooms;

• More flexible temperature management depending on the time and room occupancy;

• Use of convectors only as a supplement.

Our HVAC installation approach for the NOVAIR Ultra Heat

A high-performance wall-mounted heat pump requires careful installation. At AirGreen, we have developed a structured method:

1. 100% free on-site estimate
   We travel to Montreal , Laval , Longueuil , the North Shore and the South Shore to analyze your home: volumes, heat loss, orientation, insulation level, electrical condition.

2. Model sizing and selection
   We check that the NOVAIR Ultra Heat 24,000 BTU is suitable for your needs. If a different size or a multi-zone configuration would be more appropriate, we will clearly indicate this to you.

3. Choice of indoor location
   We determine the optimal location for the wall unit: height, airflow angle, proximity to the stairwell or corridor, potential obstacles (furniture, beams, doors).

4. Design of the refrigerated route
   We plan the route of the 3/8 - 5/8 in piping, favoring short runs, discreet passages (exterior walls, room corners, soffits) and using pipe covers where necessary.

5. Electrical installation
   We coordinate the addition of the dedicated circuit (220 V, 30 A circuit breaker, according to the value of MOP 30 A ), respecting the standards of the Electrical Code and the manufacturer's recommendations.

6. Commissioning

   • Rigorous vacuuming;

   • Checking for the absence of leaks;

   • Heat pump start-up, pressure and temperature checks;

   • Basic programming and WiFi connection.

7. User training
   We show how:

   • clean the filters;

   • choose the right modes (heating, air conditioning, auto, dehumidification);

   • adjust the fan;

   • use the timers and remote control.

8. Billing and tracking
   You will receive a detailed invoice, warranty information, the data needed for subsidy programs , and we remain available for maintenance and service.

At AirGreen, you only pay at the end , when you are satisfied, with no deposit required in advance.

LogisVert subsidy and financial aid

For this model, the indicated LogisVert provincial grant is $810 (updated November 26, 2025, for informational purposes only). This assistance reduces the total cost of the project, particularly when it is the first wall-mounted heat pump system installed in the home.

We can help you with:

• Obtain the correct AHRI certificate 211709680 ;

• Check the serial numbers and conformity of the installed devices;

• Provide the required technical documents;

• Responding to information requests from responsible organizations.

In addition, financing options can be considered to spread the investment over several months or years.

Service, parts and warranty: a system that stands the test of time

A high-performance appliance should be easy to maintain and repair. The NOVAIR Ultra Heat 24,000 BTU relies on:

• a network of readily available spare parts in Canada;

• local technical support for entrepreneurs;

• a structured guarantee strategy.

For this model:

• Compressor warranty: 10 years ;

• Parts warranty: 10 years ;

• Labor warranty that can be extended by an additional warranty program, depending on the option chosen.

At AirGreen, we:

• Let's keep all the installation details on file;

• Let's make the process easier in case of a complaint;

• We offer regular HVAC maintenance to maximize the lifespan of the equipment.

Recommended maintenance and best practices for use

To ensure your NOVAIR Ultra Heat wall-mounted heat pump remains efficient year after year, a few simple steps are essential:

• Clean the filters every 4 to 8 weeks, depending on the level of dust in the accommodation;

• Regularly check the outdoor unit (no obstructions from snow, ice or leaves);

• Use of consistent settings (avoid overly frequent or extreme setpoint changes);

• Request for periodic professional maintenance to check the refrigeration circuit, connections and overall performance.

These good practices guarantee controlled electricity consumption, stable comfort and increased longevity of the installation.

In short: why choose the NOVAIR Ultra Heat 24,000 BTU with AirGreen?

The NOVAIR Ultra Heat wall-mounted heat pump/air conditioner (-25°C) | 24,000 BTU is particularly suitable if you:

• wish to reduce your heating costs in a large space;

• live in Greater Montreal , in Laval , in Longueuil , on the North Shore or the South Shore , and are looking for a solution adapted to harsh winters;

• you want an efficient, discreet HVAC system with a good warranty period;

• Choose an installer who can provide follow-up, service, and assistance with grant applications.

With AirGreen, you benefit from:

• a free on-site estimate ;

• experienced refrigeration technicians who are proficient with this type of equipment;

• transparent pricing, with no surprises;

• comprehensive support, from the first visit to after-sales service.

Ready to improve your comfort with a NOVAIR Ultra Heat 24,000 BTU?

For a wall-mounted heat pump installation project in your home, condo, duplex or business in Montreal , Laval , Longueuil , on the North Shore or South Shore , the NOVAIR Ultra Heat 24,000 BTU offers a solid balance between performance, comfort, reliability and cost control.

Contact AirGreen now by phone or email to schedule your 100% free on-site estimate . We'll analyze your situation, verify electrical compatibility, assess the correct sizing, and propose a complete HVAC solution, professionally installed and ready to serve you for years to come.