LG LGRED R32 Central Heat Pump | 3 Tons - 36,000 BTU

A central heat pump designed for Montreal winters

In Greater Montreal, a central heat pump isn't a "catalog" purchase. It's a decision that impacts daily comfort, electricity bills, noise levels, air quality… and peace of mind when the temperature drops. Between dry winters, freeze-thaw cycles, humid thaws, and sometimes sweltering summers, the system needs to be stable, predictable, and easy to live with.

The LG LGRED R32 Central Heat Pump | 3 Tonnes - 36,000 BTU fits perfectly into this logic: a centralized solution that aims for constant comfort, high efficiency, and intelligent integration into the reality of homes and buildings in Montreal , Laval , Longueuil , North Shore and South Shore .

What “3 tonnes – 36,000 BTU” looks like in real life (and why the number alone isn't enough)

The 36,000 BTU (3-tonne) unit is often used in residential projects where uniform distribution is desired across multiple rooms, with existing or upgradeable ductwork. It is typically seen in:

• medium to large-sized single-family homes,

• large renovated condos or duplexes where a clean, central system is desired,

• Properties with open-plan living/kitchen layouts require well-managed airflow.

• houses with finished basements where temperature balance becomes a challenge.

But at AirGreen, we repeat: a nominal capacity is not a sizing . What matters is the actual load (insulation, fenestration, air infiltration, orientation, occupancy habits) and the behavior of the ducts (air returns, pressure losses, balancing).

• Too small: the machine runs non-stop, the floors fight for heat, and comfort varies.

• Too large: short cycles, drafty feel, and less effective dehumidification on sticky days.

Our goal is not just to “install a 3-tonne”, but to install the right configuration , at the right speed, with the right distribution strategy.

R-32: efficiency and best practices, without compromise

R-32 is a modern choice: it aligns with a trend towards more efficient and responsible equipment. For the customer, the key point is this: it requires flawless installation .
At AirGreen, this means:

• Impeccable brazing and fittings,

• rigorous leak tests,

• pipe protection and insulation

• methodical commissioning (not "hastily").

In short: if you invest in a high-performance central heat pump, the installation must be at the same level.

LGRED Platform: the logic of a "simple to use" central system

What we like about this approach is its consistency: a central system designed for stable heating and cooling management, with realistic integration into a mechanical room. In practice, the comfort of a central system depends on very specific details:

• temperature stability,

• noise level,

• humidity management,

• filtration quality

• balanced air circulation between floors.

And that's exactly where installation expertise makes all the difference.

Performance: How to interpret it as an owner

For a reader comparing options, certain indicators are useful — provided they are read correctly:

• SEER2 : seasonal efficiency in air conditioning (the higher the better, for the same installation).

• HSPF2 : seasonal heating efficiency (same principle: higher = more efficient).

• ENERGY STAR® and Cold Climate certification: an interesting signal for our winters, especially when the equipment is well sized and well installed.

These figures do not replace a building analysis, but they help to place the machine in an “efficient and serious” category, especially for real needs in Montreal and the surrounding areas.

Heating at -25°C: what that actually means

In everyday life, “heating capacity down to -25°C” doesn't mean everything will be perfect in any unprepared home. It means the equipment is designed to continue providing heat in challenging conditions—a real advantage during our coldest periods.
Our AirGreen approach:

• check the building envelope (insulation, leaks),

• validate the distribution (ducts, air returns),

• intelligently plan for additional resources if needed (depending on the building),

• configure the system to work efficiently, not in “panic mode”.

Silence and neighborliness: noise is not a minor detail

In several Montreal neighborhoods (closely spaced duplexes, alleyways, narrow courtyards) and in the suburbs (terraces, pools, outdoor living spaces), the location of the outdoor unit is strategic.
We take into account:

• the distance to the bedroom windows,

• the proximity of neighbors

• the reverberation off walls or fences,

• access to the service,

• and especially in winter (snow accumulation, de-icing, drainage).

A central system can be very convenient… but a poorly placed outdoor unit can ruin the experience. That's why an on-site visit is essential.

Optional Wi-Fi: useful, but only if it's part of your daily life.

Wi-Fi is of great interest to many homeowners, especially those who want to:

• adjust the temperature remotely (returning from a trip, cottage, variable schedules),

• follow the maintenance schedule (filter reminders),

• simplify home management (comfort in the morning, savings during the day, comfort in the evening).

At AirGreen, we integrate this option when it meets a genuine need. Otherwise, well-positioned controls, consistent settings, and good programming already provide a very stable and simple experience.

Guarantee and investment logic: a realistic vision

In residential settings, the question isn't just "how much it costs," but "what's it worth over 10 years?" A central heat pump is:

• more uniform comfort than a room-by-room system,

• clear control,

• added value for the property,

• and more stable management of air conditioning and heating.

According to the product information, the advertised warranty is 10 years for the compressor / 10 years for parts / 0 years for labor , with the option of an extended warranty. In practice, this underscores the importance of quality installation and diligent maintenance: the goal is to preserve performance and avoid preventable problems.

AirGreen case studies: real situations, real decisions

Without going into overly optimistic scenarios, here are some typical examples we often encounter:

Case 1 — Duplex in Montreal, ducts modified during renovations
The owner complains of a comfortable ground floor, but an upper floor that is too hot in summer and colder in winter.
Our intervention: checking air returns, correcting certain vents, adjusting the flow rate, and implementing a filtration strategy. Result: improved stability, fewer "peaks," and a smoother air feel.

Case 2 — House in Laval, finished basement and persistent humidity
Thermal comfort is acceptable, but the humidity in mid-season gives a feeling of heaviness.
Our approach: validating airflow in the basement, optimizing settings, and providing practical recommendations on filtration and maintenance. A well-adjusted central system can significantly improve comfort, especially in semi-underground areas.

Case 3 — South Shore, house with large windows and high summer loads
The air conditioning must be stable, without excessive noise and without drafts.
We work on the location, flow rate, balancing, and configuration of the diffusion to maintain consistent comfort even on very hot days.

AirGreen installation: method, costs, subsidies and maintenance

A successful HVAC installation is not just about an outdoor unit and an indoor unit being installed "according to plan". It's a complete project: mechanical, electrical, air distribution, drainage, supports, commissioning… and above all, adjustments to ensure the system "fits" the building.

The key technical elements of the product (those that guide the construction site)

According to the product information available:

• Outdoor unit: KUSXA361A

• Indoor unit: KNSLA361A

• Cooling capacity: 36,000 BTU

• Voltage: 220V

• MCA: 32A / MOP: 35A

• Piping: 3/8 – 5/8

These details are not decorative: they dictate the electrical approach, the caliber of the protections, the piping planning and certain integration constraints.

Electricity: where surprises are costly (and how to avoid them)

A 3-tonne central heat pump often requires:

• an electrical panel check

• validation of the circuit breakers and available capacity,

• sometimes an adjustment or optimization of existing circuits.

At AirGreen, we identify these points before starting the project. The goal: to avoid delays, unforeseen additions, and rushed decisions along the way.

Refrigerant piping: performance and reliability depend on it

The plumbing is the "blood circulation" of the system. Poor practices can result in:

• performance decline

• risk of leakage

• noise,

• premature wear.

We emphasize:

• A clean and logical path

• Complete insulation

• regular supports,

• reduction of unnecessary bends,

• mechanical protection in sensitive areas (passage, corners, wall exit).

And above all: methodical commissioning . The customer doesn't see all of this... but they feel it every day in the stability of their comfort.

Ducts and airflow: the true heart of a central heat pump

In many homes in Montreal and Longueuil , we find ductwork systems that were not designed for modern performance levels. A good central system requires:

• sufficient air return,

• a balance between floors,

• a consistent distribution (well-positioned mouths),

• and appropriate filtration.

When these elements are neglected, the customer thinks that “the machine is not good”, when the problem is often in the distribution.

Humidity and dehumidification: summer comfort is not just about temperature

Many people associate air conditioning with being cold. In reality, summer comfort is primarily about:

• a stable temperature

• controlled humidity,

• a pleasant (not aggressive) airflow.

With a well-tuned central system, the feeling can change radically: less "heavy" air, fewer variations, and a more pleasant home even when it is humid outside.

LogisVert subsidy: how it is processed in practice

On the product page, a provincial subsidy (LogisVert) of $3048 is indicated (updated: November 26, 2025).
Our way of working:

• to validate eligibility based on the project,

• confirm the exact configuration.

• to structure a clear and comprehensive offer,

• guide the client on what to keep (invoices, useful information).

The goal is not to “promise” a subsidy, but to set up a project that is administratively and technically sound .

Three common mistakes (and how AirGreen avoids them)

1. Choosing equipment without looking at the ducts
   Result: uncomfortable areas, noise, and disappointing perceived performance.

2. Underestimating the importance of outdoor location
   Snow accumulation, poorly managed de-icing, noise, difficult access: all of this can be planned for.

3. Forget about maintenance and filtration from the very first season
   A neglected filter and a poorly maintained system can reduce comfort, increase fuel consumption and wear out equipment.

AirGreen HVAC Maintenance: What We Do (and Why It Extends Performance)

Proper HVAC maintenance for a central heat pump involves a series of simple actions, but they must be done correctly:

• inspection and visual cleaning of the outdoor unit (depending on the season),

• verification of clearances and winter conditions,

• Validation of drainage and signs of fouling,

• filtration control and usage-specific recommendations,

• observation of the system's behavior (noise, cycles, diffusion).

In several projects on the North Shore and the South Shore , it is precisely these actions that maintain a stable yield year after year — especially in a climate where conditions change rapidly.

Mini practical guide: questions our customers often ask

“Will it provide heat all winter without any other source?”
It depends on the building, the insulation, the loads, and the overall strategy. Our role is to assess your situation and propose a realistic, comfortable, and compliant solution.

“Will I feel any drafts?”
Not if the flow and distribution are properly managed. That's precisely the kind of adjustment we make on site.

“Is it noisy?”
The noise level depends on the machine, but also on its location, supports, and environment (walls, corners, reverberation). Good planning greatly reduces potential irritants.

“Why do an on-site estimate?”
Because a central heat pump is a complete system: ductwork, electricity, location, drainage, access constraints. A proper estimate avoids surprises.

Conclusion: Who is this LG LGRED R32 36,000 BTU suitable for?

This LG LGRED R32 3-tonne – 36,000 BTU central heat pump is a relevant choice if you want to:

• uniform and centralized comfort

• high efficiency in air conditioning and heating,

• a solution adapted to the realities of Montreal , Laval , Longueuil , North Shore , South Shore ,

• and a rigorous installation, designed to last.

At AirGreen, we install, maintain and optimize central systems to ensure they are consistent with your building, your habits and your budget.

Contact AirGreen for an on-site estimate, validation of your ductwork and electrical capacity, and a clear and transparent proposal for your HVAC (LG central heat pump) installation in Montreal, Laval, Longueuil, North Shore and South Shore .