LG Central Heat Pump LGRED R32 | 2 Tons - 24,000 BTU

A central heat pump designed for Montreal's real climate (and not just for a spec sheet)

In Greater Montreal, a central heat pump is never installed in a vacuum. It has to contend with highly contrasting weather patterns: dry cold, rapid thaws, freezing rain, summer humidity, urban dust, narrow streets, compact backyards, and buildings whose envelope varies enormously from one street to the next. Between a brick duplex in Rosemont , a bungalow in Laval , a semi-detached house on the South Shore , or a newer home in Longueuil , the actual heating and cooling needs change faster than you might think.

The LG LGRED R32 Central Heat Pump | 2 Tons - 24,000 BTU is one of our preferred solutions when a homeowner wants a modern central system: comfortable, efficient, and capable of serious heating needs. Here, the goal isn't just to have cool air in the summer, but above all to maintain a reliable level of comfort when winter requires extended periods of operation.

What “2 tonnes – 24,000 BTU” actually means (and what it doesn’t mean)

The 2-tonne (24,000 BTU) format is often relevant for:

• a medium-sized single-family home with adequate insulation;

• a property where the aim is to reduce the differences between floors (basement, ground floor, bedrooms);

• a house where the pipes already exist, or can be improved without redoing the entire distribution system.

What this doesn't mean is: “2 tons = perfect for everyone.” At AirGreen, we avoid the classic mistake of oversizing. An oversized heat pump can cycle too often, dehumidify poorly in the summer, create discomfort, and wear out faster. Conversely, an undersized heat pump will work excessively, resulting in unstable comfort during cold snaps. The right choice is made with a thorough analysis: heated volume, insulation, orientation, windows, air leaks, and especially the actual condition of the ductwork.

R-32: a modern choice, but one that requires impeccable installation.

This heat pump uses R-32 refrigerant (Freon) . In practice, this choice offers several advantages, including a reduced environmental impact compared to older refrigerants. However, one crucial point remains: the quality of the installation becomes even more critical.

On the construction site, we apply strict discipline:

• clean piping, properly insulated and supported;

• clean soldering (without internal contamination);

• serious vacuuming;

• leak test;

• complete and measured commissioning.

In other words, R-32 is an excellent choice when accompanied by flawless installation and commissioning. This is where the system's longevity depends.

Useful specifications for owners who want to understand their investment

Without turning this article into a manual, here is some concrete information that is often sought after:

• Cooling capacity: 24,000 BTU

• Size: 2 tonnes

• Gas: R-32

• Exterior model: KUSXA241A

• Interior model: KNSLA241A

• AHRI: 215588568

• ENERGY STAR®: Yes

• ENERGY STAR® (Cold Climate): Yes

• Wi-Fi: optional

• Voltage: 220V

• MCA: 20A

• MOP: 30A

• Outdoor noise level: approximately 52 dB(A)

• External dimensions (W x D x H): 37.41 x 13 x 32.84 in

• Interior dimensions (L x D x H): 18 x 21.38 x 48.66 in

• Piping: 3/8 – 5/8

• Warranty (compressor – parts – labor): 10 – 10 – 0 years

• LogisVert provincial grant: $2124 (updated: November 26, 2025)

These details help to frame the project, but they do not replace the crucial point: compatibility with your home, your ductwork, and your comfort goals.

Seasonal performance: the number is important, but the result is even more so.

The SEER2 , EER2 and HSPF2 indicators are often seen. For this model, the values ​​displayed on the product page are very high ( SEER2 17.5 , EER2 12.5 , HSPF2 10.0 ), which indicates excellent potential efficiency.

However, the actual return depends heavily on:

• the quality of the ducts and their airtightness;

• the actual airflow (CFM) delivered, not just “estimated”;

• balancing the vents (otherwise some rooms overheat while others remain cold);

• de-icing management and drainage in winter;

• programming and control logic (thermostat, modes, setpoints, etc.).

This is precisely why a “clean” HVAC installation and a serious commissioning often give superior results to a more expensive system installed too quickly.

Heating in cold conditions: what we're looking at in the field

For Montreal and the surrounding area, the question isn't "Does it heat?", but how does it heat when it really matters ? This heat pump is advertised with a heating capacity down to -25°C , which is the kind of performance many homeowners are looking for as they want to reduce their reliance on supplemental electric heating.

We also note some power benchmarks:

• Rated power: 24,000 BTU

• Power at -8°C: 17,700 BTU

• Power at -15°C: 25,000 BTU

In reality, these are useful benchmarks for understanding how the machine "holds up" in winter. But, again, comfort doesn't depend solely on the machine: a poorly designed air distribution system will ruin the experience, even with high-performance equipment.

Acoustic comfort: managing noise before it becomes a problem

A central heat pump is often perceived as “quiet by default”. In practice, the noise comes from three places:

1. Outside : placement, air recirculation, base vibration, proximity to walls, resonance box effect.

2. Inside : excessive flow rate, overly restrictive ducts, poorly sized grilles, insufficient air returns.

3. In the home : vibrations can be transmitted if certain fixings or supports are not suitable.

With an outside noise level around 52 dB(A) , you're generally in a comfortable zone. But the installation makes all the difference. At AirGreen, we treat noise as a design criterion, not as an afterthought.

Dehumidification: the key to comfort in Montreal during the summer

Comfort isn't just a matter of temperature: humidity makes all the difference. This unit advertises approximately 4.23 points/hour of dehumidification. In practice, when the system is properly sized and adjusted, the results are as follows:

• a more stable feeling of freshness;

• less “humidity” in the evening and at night;

• a reduction in comfort variations between rooms;

• better control during humid days without necessarily "freezing" the house.

An important point: if the system is oversized and shuts off too quickly, it cools without properly dehumidifying. The AirGreen approach aims to avoid this scenario.

Wi-Fi (optional): useful when used correctly

Wi-Fi control isn't a gimmick if used intelligently. It can help to:

• monitor instructions and usage;

• adjust the programming according to habits;

• avoid overly aggressive instructions (which push the machine to cycle);

• simplify comfort monitoring when you are often outdoors.

We especially recommend Wi-Fi to owners who want finer control, or who manage an intergenerational home, a basement apartment, or a property with variable use.

Conduits and distribution: the most underestimated element of a power plant

Installing a central heat pump on existing ductwork can be excellent… or disastrous, depending on the condition of the system. We often encounter:

• leaking ducts (air lost in the attic, crawl space, or unsealed sections);

• air returns that are too small (the machine strains, noise increases, comfort decreases);

• poorly balanced outlets (the parts at the end of the network suffer);

• “Dead” areas (cold corners, overly warm rooms, damp basement).

A significant part of our work involves diagnosing this during the estimation phase. Sometimes, a simple adjustment (sealing, adding a return, rebalancing) completely transforms the perceived performance.

Pipe lengths: respect the limits to protect the compressor

A nuclear power plant imposes strict rules regarding length, height, and refrigerant charge. For this type of system, design guidelines include:

• total equivalent length can be up to approximately 164 feet ;

• maximum height difference of up to approximately 98.4 feet ;

• Load adjustment required after a certain length (addition in grams according to the manufacturer).

Why is this crucial? Because a system installed beyond its parameters without correction will experience decreased performance and an increased risk of problems in the medium term. A central heat pump doesn't need to be "pushed": it must be installed correctly.

Two very realistic stories (that we often see in Greater Montreal)

Case 1 – Duplex in Rosemont, uneven comfort between floors
The client complains that the ground floor is fine, but the upstairs rooms are always "behind schedule," especially during heat waves. The old system was powerful but ineffective.
Our approach: before even discussing equipment, we check the distribution system. We identify insufficient air return on the upper floor and losses in a section of ductwork. After targeted corrections and installation of the unit, we adjust the flow rate and balance. The result: the rooms are finally habitable in the summer, and the temperature is more consistent in the winter.

Case 2 – Laval, de-icing and ice on the entrance
A customer experienced two winters where the outdoor unit discharged defrost water into an area that froze and became dangerous. He thought, “That’s normal.” In reality, what’s normal is the defrosting process… not the poor drainage management.
Our approach: repositioning and raising, adapted base, clearances respected, properly directed drainage. Result: a more peaceful winter, less ice, and an outdoor unit more accessible for maintenance.

Common mistakes that cost a lot (and how to avoid them)

Here are the things we correct most often:

• Choosing the tonnage at random : too large = short cycles, humidity, discomfort; too small = system strain and unstable comfort.

• Neglecting the ductwork : a high-performing central unit on paper will not compensate for poor distribution.

• Installing the outdoor unit in a “convenient corner” : air recirculation, noise, poorly managed defrosting, difficult access.

• Ignoring electricity : poorly rated panel, inadequate protections, or improvised electrical work.

• Skipping commissioning : an unmeasured system is a system that “works” without being optimized.

• Forget about maintenance : filters, airflow, seasonal inspection, evacuation… performance is maintained, it cannot be automated.

The AirGreen method: a 2-ton LGRED installation that truly performs in Montreal, Laval, Longueuil, the North Shore and the South Shore

A 2-ton LG LGRED R32 central heat pump is more than just an equipment replacement. It's a comfort and performance investment. Our approach aims for a reliable, predictable, and surprise-free experience.

1) On-site evaluation: we validate the correct solution, not just “the machine”

During the estimation process, we analyze:

• the surface area actually conditioned;

• insulation, sealing, windows;

• loss points (doors, stairs, basement, rooms above the garage, etc.);

• the logic of air distribution (returns, flow rate, restrictions);

• electrical configuration (220V, capacity, protections).

It is at this stage that we confirm whether 24,000 BTU is the ideal option, or if we need to adjust to avoid problems.

2) Planning: location, noise, drainage, service

We plan the installation taking into account:

• air circulation around the outdoor unit;

• the stability of the base (vibrations);

• access to the service (an inaccessible system becomes a poorly maintained system);

• defrosting and water management in winter;

• aesthetics and coexistence with the neighborhood (important in urban areas).

3) Refrigeration installation: the rigor that protects your warranty and your comfort

We work with a structured method:

• Properly sized piping ( 3/8 – 5/8 ), insulated and protected;

• clean soldering;

• vacuuming and leak testing;

• full commissioning;

• Load adjustment if required by the actual length.

Our goal is simple: to deliver a machine that performs in your home , not just in theory.

4) Settings: airflow, balance, comfort room by room

A power plant does not "end" the moment it starts. We confirm:

• the actual airflow;

• balancing the mouths;

• temperature stability between zones;

• behavior in heating and air conditioning;

• vibrations and noises (if necessary, immediate corrections).

This adjustment process is often the difference between “it works” and “it’s comfortable”.

5) Maintenance: maintaining performance and avoiding preventable breakdowns

For a central heat pump , we recommend a simple but thorough routine:

To be done regularly

• check/replace the filters according to usage (more often if pets, work, dust);

• ensure that the air returns are not obstructed (furniture, curtains, etc.);

• Keep the outdoor unit clear (leaves, snow, ice).

To be done periodically

• drainage inspection;

• checking the airflow and the condition of the ducts;

• cleaning and technical inspection, especially before or after demanding seasons.

In our experience, many "mysterious" problems are actually due to neglected filters, blocked returns, or insufficient airflow. It's simple, but it matters.

LogisVert subsidy: a factor that influences the budget

This heat pump is advertised with a provincial subsidy (LogisVert): $2124 (update indicated as of November 26, 2025 ). For many homeowners in Montreal , Laval , Longueuil , the North Shore and the South Shore , this is a factor that changes their strategy: they are aiming for a high-performance system, compliant with the criteria, while maintaining a quality installation.

Our role is also to clarify what is admissible, what is not, and how to avoid administrative errors that complicate the process.

Warranty: understand the “10-10-0” and what it entails

The advertised warranty is 10 years compressor / 10 years parts / 0 years labor . Many customers read “10 years” and think everything is covered. In reality:

• The parts and compressor are covered according to the manufacturer's terms;

• Labor is not included by default in this configuration;

• An additional guarantee may sometimes be added (depending on options and conditions).

At AirGreen, we like to explain this clearly from the outset: it's an important investment, and transparency about the coverage avoids unpleasant surprises.

Why choose AirGreen for this LG central heat pump?

Because a successful HVAC installation isn't just about a good product. It's about:

• serious sizing;

• a clean and compliant installation;

• a measured commissioning;

• settings geared towards real comfort;

• a professional approach adapted to the climate and homes here.

We work weekly on projects in Montreal , Laval , Longueuil , on the North Shore and the South Shore . This field experience helps us anticipate the real issues: noise, defrosting, ducts, humidity, balancing, and durability.

Conclusion: transforming a “purchase” into lasting comfort

The LGRED R32 Central Heat Pump | 2 Ton - 24,000 BTU is a very solid option when chosen for the right reasons and installed correctly. It combines a central capacity suitable for many homes in Greater Montreal, a modern R-32 refrigerant, desirable efficiency features, and technical parameters well-suited to a serious residential installation.

If you want a clear, no-nonsense proposal with an installation tailored to your home and neighborhood, contact AirGreen for an on-site estimate . We'll guide you on sizing, installation, maintenance, and the best decisions for consistent comfort in Montreal , Laval , Longueuil , the North Shore , and the South Shore .

Speak to AirGreen : Request a quote for the installation or replacement of your LGRED 2-tonne central heat pump . Our team will guide you from assessment to commissioning, with a transparent and performance-driven approach.