Infinity Residential Series
Showing all 7 results
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Carrier Infinity Residential Ductless System Cassette Indoor Unit 40GJC
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Carrier Infinity Residential Ductless System Ducted Indoor Unit 40GJD
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Carrier Infinity Residential Ductless System Floor Console Indoor Unit 40GJF
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Carrier Infinity Residential Ductless System Heat Pump with Basepan Heater 38GRQ
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Carrier Infinity Residential Ductless System High Wall indoor unit 40GJB
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Carrier Infinity Residential Ductless System High Wall indoor unit 40GRQ
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Carrier Infinity Residential Ductless System Multi-Zone Heat Pump 38GJQ
Infinity Residential Series Ductless Systems
Infinity Residential Series ductless systems are inverter-driven heat pumps designed for premium residential heating and cooling without conventional whole-home ductwork. The category includes the 38GRQ single-zone heat pump, 40GRQ high-wall indoor unit, 38GJQ multi-zone heat pump, and four GJ indoor-unit options: 40GJB high wall, 40GJC cassette, 40GJD ducted, and 40GJF floor console.
The main selection decision is whether the home needs one dedicated zone or several independently controlled spaces. From there, heating load, cold-weather performance, indoor-unit style, available mounting space, refrigerant piping, electrical requirements, and Toronto winter conditions determine the best configuration.
Infinity Residential Series Products
The seven products in this category form two system paths: the GR single-zone system and the GJ multi-zone system. Understanding which products work together prevents indoor-unit style or efficiency specifications from being compared outside their intended system configuration.
38GRQ and 40GRQ Single-Zone System
The GR system combines the 38GRQ outdoor heat pump with the 40GRQ high-wall indoor unit for a dedicated residential zone. This configuration is the stronger choice when one bedroom, addition, home office, sunroom, upper floor, or other defined space needs independent premium heating and cooling.
The 38GRQ uses an inverter compressor and can reach up to 30.5 SEER cooling efficiency and 10.3 HSPF heating efficiency in applicable matched configurations. It also includes a built-in basepan heater, an important feature when the outdoor unit will operate through freezing Toronto weather.
38GRQ Cold-Weather Heating Performance
The 38GRQ is particularly relevant where winter heating matters. Applicable configurations can maintain full heating capacity around -15°C and approximately 90% of heating capacity around -30°C, giving the GR system substantially more cold-weather capability than equipment designed mainly for mild-season heat-pump operation.
Those figures should still be compared with the actual heat loss of the room. A system capable of operating at very low outdoor temperatures is not automatically large enough to heat every space at those conditions.
Choosing the 38GRQ From Cooling Capacity Alone
A room can have a moderate summer cooling load but a much larger winter heating load because of windows, insulation, air leakage, and exterior exposure. If the system will provide significant winter heat, sizing only for summer conditions can leave the room dependent on supplemental heating during the coldest weather.
40GRQ High-Wall Indoor Unit
The 40GRQ is the high-wall indoor component of the GR single-zone system and can also be used with compatible GJ multi-zone configurations. It is available in capacities from approximately 0.75 to 1.5 tons and offers up to seven indoor fan speeds, allowing airflow to adjust more closely to changing room demand.
Indoor sound can be as low as approximately 22 decibels under suitable operating conditions, making the unit relevant for bedrooms, home offices, and other quiet spaces. Placement remains important: a quiet, efficient indoor unit will not provide good comfort if furniture, partitions, or room geometry block its airflow.
38GJQ Infinity Multi-Zone Heat Pump
The 38GJQ is the outdoor heat pump that creates the GJ multi-zone system. It can support up to nine compatible indoor units, allowing several rooms to have independent heating and cooling while using one outdoor variable-speed compressor unit.
Applicable configurations can reach up to 22 SEER cooling efficiency and 10.2 HSPF heating efficiency. The system also includes a built-in basepan heater, while total allowable refrigerant piping varies substantially with outdoor-unit capacity and system configuration.
The main advantage over installing several separate single-zone systems is flexibility: high-wall, cassette, ducted, and floor-console indoor units can be combined to suit different rooms. The trade-off is that outdoor-unit capacity is shared among connected zones, making room-by-room load calculations important.
38GRQ Single-Zone vs 38GJQ Multi-Zone
The 38GRQ and 38GJQ solve different residential comfort problems. Comparing them by maximum efficiency alone misses the more important question of how many spaces need independent conditioning.
Choosing a GJ Multi-Zone Indoor Unit
The 38GJQ system is not limited to one indoor-unit design. The 40GJB, 40GJC, 40GJD, and 40GJF allow each zone to be matched to its architecture, airflow requirements, and desired appearance.
40GJB High Wall
A practical choice for bedrooms, offices, living rooms, and additions where an unobstructed upper-wall location is available. It offers direct room air delivery without short ductwork.
40GJC Cassette
A ceiling-mounted option for spaces where central overhead distribution is preferable. Ceiling depth, drainage, refrigerant routing, and service access must be confirmed before selection.
40GJD Ducted
A concealed option that can distribute conditioned air through short duct runs. It improves interior aesthetics but adds duct design, static pressure, return-air, and access requirements.
40GJF Floor Console
Useful where high-wall installation is restricted by windows, sloped ceilings, or room architecture. Furniture placement must leave the unit's airflow path open.
Mixing Indoor Unit Styles
Different GJ indoor-unit types can address different room conditions within one multi-zone design, avoiding the need to force the same mounting style throughout the home.
Room-by-Room Capacity
Indoor-unit style should be selected only after each zone's load is established. Appearance alone should not determine unit capacity or outdoor-system sizing.
40GJB High-Wall Indoor Unit
The 40GJB is the conventional high-wall option for the GJ multi-zone system. It provides heating, cooling, dry, fan, and automatic modes with seven indoor fan speeds and quiet operation reaching approximately 23 decibels under suitable conditions.
It is often the most straightforward choice when wall space and refrigerant routing are available. Compared with cassette or concealed ducted equipment, high-wall installation generally requires less building modification, but the indoor unit remains visible.
40GJC Cassette Indoor Unit
The 40GJC installs at ceiling level and is designed for GJ multi-zone applications where overhead air distribution is preferable to a high-wall unit. It includes three indoor fan speeds and a built-in condensate pump, which can provide more flexibility where gravity drainage is difficult.
The cassette should be selected only after ceiling conditions are confirmed. Limited ceiling depth, inaccessible service areas, structural obstructions, or difficult refrigerant routing can make a high-wall or floor-console unit the more practical choice.
40GJD Ducted Indoor Unit
The 40GJD provides a concealed indoor solution within the GJ multi-zone system. It uses short ductwork to deliver conditioned air through registers and includes rear or bottom return-air options and a built-in condensate pump.
This configuration can be useful for bedrooms or finished spaces where visible wall equipment is undesirable. The trade-off is installation complexity: adequate ceiling or mechanical space, supply ducts, return-air design, static pressure, drainage, and service access all have to be planned correctly.
40GJF Floor Console Indoor Unit
The 40GJF provides another GJ multi-zone option when high-wall or ceiling installation is unsuitable. It can be particularly useful in rooms with large windows, knee walls, sloped ceilings, or limited upper-wall space.
The unit can operate at sound levels around 25 decibels under favourable conditions and provides multiple fan speeds and operating modes. Because it occupies lower wall space, furniture and curtains should not obstruct its air intake or discharge.
Which Infinity Indoor Unit Fits Each Room?
Indoor-unit selection should balance appearance with installation feasibility and airflow. The most concealed solution is not necessarily the best if it requires complicated construction, while the easiest high-wall installation may not distribute air effectively in every room.
Infinity Multi-Zone Sizing
A 38GJQ system should be designed from individual zone loads and the combined operating requirements of the home. Simply adding the nominal BTU ratings printed on every indoor unit does not establish the capacity available from the outdoor unit under all conditions.
Multi-zone systems benefit from load diversity because not every room necessarily reaches peak demand at the same time. However, a design that relies on unrealistic diversity can leave several rooms short of capacity during extreme Toronto weather.
Adding Indoor Units Without Rechecking Outdoor Capacity
A multi-zone system may physically support several indoor units, but that does not mean additional zones can be added without considering the outdoor unit's capacity and approved combinations. If too much simultaneous load is connected, individual zones may take longer to reach setpoint during peak heating or cooling conditions.
Infinity Series for Toronto Winter Heating
The Infinity category includes features that are particularly relevant to Toronto and GTA heat-pump installations, including inverter operation, built-in basepan heating on the outdoor heat pumps, and strong low-temperature capability on the 38GRQ single-zone system.
The GR and GJ systems should not be assumed to have identical cold-weather performance. The 38GRQ is the stronger option when one zone requires particularly demanding low-temperature heating, while the 38GJQ prioritizes multi-zone flexibility and operates within its own outdoor-temperature and capacity limits.
Basepan Heaters and Outdoor Unit Placement
The 38GRQ and 38GJQ include basepan heating to help manage freezing conditions around the outdoor equipment. During heat-pump operation, defrost water must still be able to drain away from the unit rather than accumulating and refreezing beneath it.
For GTA installations, outdoor units should have adequate elevation above expected snow, clear airflow, and protection from repeated roof runoff. A built-in basepan heater cannot compensate for an installation where snow or ice physically blocks the outdoor coil.
Infinity Series Efficiency Comparison
The maximum published efficiency differs between the GR single-zone and GJ multi-zone systems. Those differences should be considered alongside how the home will actually use the equipment rather than treating the highest rating as the automatic winner.
A 38GRQ and 40GRQ single-zone pairing can reach up to 30.5 SEER and 10.3 HSPF, while the 38GJQ multi-zone platform can reach up to 22 SEER and 10.2 HSPF in applicable configurations. The multi-zone system trades some maximum efficiency for the ability to serve multiple independently controlled spaces from one outdoor unit.
Infinity Series vs Standard Ductless Systems
Infinity equipment is most relevant where premium efficiency, variable-speed operation, cold-weather performance, quiet indoor comfort, or multi-zone indoor-unit flexibility has practical value. A simpler ductless system may be more economical for a room used primarily for occasional summer cooling.
For a frequently occupied space requiring year-round heating and cooling, higher performance can provide more value. For several rooms, the GJ system's ability to combine different indoor-unit styles may be more important than achieving the highest possible single-zone SEER rating.
Best Applications for Infinity Residential Systems
The GR and GJ systems address different residential scenarios. Identifying the actual comfort problem first helps determine whether premium single-zone performance or multi-zone flexibility is the better investment.
One Difficult Room
The 38GRQ and 40GRQ system provides a dedicated solution when one bedroom, office, addition, or other zone needs high-efficiency heating and cooling.
Several Rooms Without Ducts
The 38GJQ can serve multiple zones without constructing a conventional whole-home duct system.
Older Toronto Homes
Multiple indoor-unit styles can reduce the need for extensive duct construction through finished walls, ceilings, and architectural details.
Home Additions
A dedicated GR system can condition a new addition without assuming the existing central HVAC equipment has enough spare capacity.
Mixed Room Layouts
The GJ system can combine high-wall, cassette, ducted, and floor-console units where one indoor-unit style does not suit every room.
Cold-Weather Single-Zone Heating
The 38GRQ is particularly relevant where maintaining substantial heating capacity during very low outdoor temperatures is a major selection priority.
Infinity Residential Series Installation
Installation requirements depend strongly on whether the project uses the GR single-zone system or a GJ multi-zone configuration. Both require refrigerant piping, electrical service, communication wiring, condensate management, appropriate indoor mounting, outdoor-unit clearances, evacuation, testing, and commissioning.
A GJ installation becomes more complex as additional indoor units and indoor-unit styles are added. Ceiling cassettes, concealed ducted units, and multiple refrigerant routes can require substantially more planning than a straightforward GR high-wall installation.
Refrigerant Piping and System Layout
The 40GRQ supports piping lengths up to approximately 82 feet in applicable configurations. The 38GJQ supports much greater total piping lengths depending on outdoor-unit capacity, with multi-zone layouts requiring careful attention to individual runs and total system limits.
Maximum permitted piping length should not be treated as a design goal. Shorter practical routes can reduce installation complexity, exterior line-cover requirements, refrigerant considerations, and future service challenges.
Infinity Residential Series Replacement
Replacing an older ductless system with a GR or GJ system requires verification of existing refrigerant piping, line sizes, electrical service, communication wiring, drains, outdoor mounting, and indoor-unit locations. Similar nominal BTU capacity does not guarantee installation compatibility.
Existing refrigerant lines should be inspected before reuse. If the old system uses incompatible piping, has experienced contamination, or has inaccessible connections, replacement may require new line sets rather than simply connecting new equipment to the existing installation.
Replacing One System vs Expanding to Multi-Zone
A failed single-zone system can be replaced with a dedicated 38GRQ and 40GRQ configuration when only one space needs ductless comfort. If several rooms now require independent heating and cooling, replacement is also an opportunity to compare a 38GJQ multi-zone design.
Multi-zone should not be selected only because future expansion seems possible. If one room is the only confirmed requirement, a dedicated GR system can provide higher maximum efficiency and avoids paying for unused multi-zone capability.
Infinity Residential Series Installation Cost
Installed cost depends on system architecture rather than the outdoor unit alone. A single 38GRQ and 40GRQ high-wall installation is fundamentally different from a 38GJQ project with several indoor units distributed throughout a home.
Number of zones, indoor-unit style, refrigerant piping, ceiling access, condensate drainage, electrical work, outdoor mounting, replacement requirements, and installation access can all change the final cost. Cassette and ducted indoor units generally require more building coordination than a straightforward high-wall installation.
Factors That Affect Infinity System Cost
Comparing complete installation scope is more useful than comparing equipment prices alone. These factors can materially change the cost and should be identified before selecting the final GR or GJ configuration.
- 38GRQ single-zone or 38GJQ multi-zone system selection
- Number of indoor zones
- 40GRQ or 40GJB high-wall installation
- 40GJC cassette installation and ceiling access
- 40GJD concealed ductwork and return-air requirements
- 40GJF floor-console placement
- Heating and cooling capacity required in each room
- Refrigerant-line length and routing
- Condensate drainage or pumping requirements
- Electrical circuit or panel upgrades
- Outdoor mounting and winter elevation
- Removal and replacement of existing ductless equipment
Infinity Residential Series Selection Checklist
The final decision should start with the rooms being conditioned and then work outward to the system configuration. This prevents choosing an outdoor unit first and trying to make the home's requirements fit the equipment afterward.
Choose the Right Infinity Configuration
- Choose the 38GRQ and 40GRQ GR system when one primary zone needs dedicated premium performance.
- Consider the 38GJQ GJ system when multiple rooms require independent heating and cooling.
- Calculate heating and cooling loads separately for every intended zone.
- Compare low-temperature heating capacity when winter operation is a major requirement.
- Use 40GJB or compatible high-wall equipment where direct wall-mounted air distribution works well.
- Consider 40GJC where ceiling installation provides a better room layout.
- Consider 40GJD where concealed equipment and short duct runs are preferred.
- Consider 40GJF where upper-wall or ceiling installation is impractical.
- Check the approved indoor and outdoor equipment combinations before final selection.
- Size a 38GJQ system for actual simultaneous zone requirements rather than indoor-unit count alone.
- Plan refrigerant piping and condensate drainage before finalizing indoor-unit locations.
- Provide adequate outdoor-unit elevation and drainage for Toronto winter operation.
- Verify available electrical capacity before installation.
- Inspect existing line sets and wiring before deciding what can be reused during replacement.
- Compare the complete installed system cost rather than equipment price alone.
Choose the Right Infinity Residential Series System
The Infinity Residential Series gives homeowners two clear system paths. The 38GRQ and 40GRQ GR combination provides a high-efficiency, cold-weather single-zone solution, while the 38GJQ GJ platform supports multiple rooms using 40GJB high-wall, 40GJC cassette, 40GJD ducted, and 40GJF floor-console indoor units.
For Toronto and GTA homes, the better choice depends on the number of zones, room-by-room loads, winter heating expectations, indoor-unit placement, outdoor-unit location, electrical capacity, and installation layout. Selecting the correct GR or GJ configuration first makes it easier to choose the right Infinity products for the home.
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