Ducted Heat Pump Vs Ductless Mini Split: What Is The Difference?

A ducted heat pump uses a central indoor air handler and a network of supply and return ducts. A ductless mini-split uses one or more indoor units connected directly to an outdoor heat-pump unit, with each indoor unit delivering conditioned air directly into its zone.

Both systems use the same fundamental refrigeration principle: they move heat rather than generating heating energy in the same way as a conventional furnace. But the way they deliver that heating and cooling is substantially different.

The distinction affects installation, zoning, airflow, comfort, appearance, maintenance, renovation requirements, and suitability for different houses.

For a homeowner replacing an existing central HVAC system, the decision may be relatively straightforward if the existing ducts are in good condition. For a house without ducts, however, installing a new duct network can change the economics and practicality of the project considerably.

This guide explains the technical differences between ducted heat pumps and ductless mini-splits, including how their refrigeration systems, air distribution, controls, zoning, efficiency, maintenance and installation requirements compare.

Ducted Heat Pump Vs Ductless Mini Split At A Glance

What Is A Ducted Heat Pump?

A ducted heat pump is a split HVAC system in which the indoor equipment connects to a central duct network.

The major components normally include:

• Outdoor heat-pump unit
• Compressor
• Outdoor heat-exchange coil
• Reversing valve
• Indoor coil
• Air handler or compatible indoor cabinet
• Blower
• Return-air system
• Supply-air ducts
• Thermostat or control system

During heating, the system extracts heat from outdoor air and transfers it indoors. The blower then moves air across the indoor heat exchanger and distributes the conditioned air through supply ducts.

During cooling, the refrigeration cycle reverses. Heat is removed from indoor air and rejected outdoors.

From the homeowner’s perspective, the system can operate much like a conventional central furnace and air conditioner. The major difference is that the heat pump can reverse its refrigeration cycle to provide heating.

What Is A Ductless Mini Split?

A ductless mini-split is also a heat-pump system, but it normally eliminates the central duct network.

The outdoor unit is connected through refrigerant lines and control wiring to one or more indoor units.

The indoor units may be:

• Wall-mounted
• Ceiling-mounted
• Floor-mounted
• Concealed ceiling units
• Ducted indoor units used in a limited duct application

A conventional wall-mounted mini-split indoor unit contains its own blower and heat exchanger. It receives refrigerant directly from the outdoor system and delivers conditioned air into the room.

Instead of using a central return-air system, the indoor unit generally recirculates air from the room in which it is installed.

The Fundamental Difference: Where The Air Goes

The refrigeration technology can be similar, but the air-distribution architecture is different.

A ducted system looks approximately like this:

Outdoor heat pump → indoor coil → central blower → supply ducts → rooms → return ducts → indoor unit

A ductless system looks more like this:

Outdoor heat pump → refrigerant lines → indoor unit → room

With a multi-zone ductless system, several indoor units can connect to one outdoor unit, with each indoor unit serving its own zone.

This difference has consequences for virtually every other aspect of the installation.

How A Ducted Heat Pump Distributes Air

In a ducted system, the blower creates an airflow path through the house.

Return air enters the system through one or more return grilles. It passes through the filter and across the indoor coil. The blower then pushes the conditioned air into the supply plenum and through the supply ducts.

The air eventually reaches individual rooms through registers or diffusers.

After entering the rooms, air must have a pathway back to the return system.

That return pathway may be a dedicated return duct, a central return arrangement or another engineered air-transfer solution.

Therefore, a ducted system is not simply a blower connected to supply pipes. It is an entire air-circulation network.

How A Ductless Mini Split Distributes Air

In a conventional ductless mini-split installation, the indoor unit contains its own blower.

The indoor unit pulls room air through its filter and heat exchanger and then sends the conditioned air directly back into the same zone.

There is no need for a central supply duct to deliver the air to the room.

Likewise, there is normally no central return duct carrying that room’s air back to the outdoor unit.

This substantially reduces the amount of construction associated with air distribution.

Why Existing Ductwork Changes The Decision

If a house already has a well-designed duct system, a ducted heat pump can make use of infrastructure that is already in place.

That does not mean the ducts should automatically be reused.

The contractor should evaluate whether the existing system provides adequate:

• Supply airflow
• Return airflow
• Duct capacity
• Static pressure
• Insulation
• Air sealing
• Distribution balance

A duct system originally designed for a furnace and central air conditioner may or may not be suitable for a new heat pump, depending on the equipment and airflow requirements.

This is one reason a duct evaluation should be part of a heat-pump replacement project.

What If The House Has No Ductwork?

This is where ductless mini-splits can become particularly attractive.

Installing a complete central duct network in an existing house can involve opening ceilings, walls, floors or closets, depending on the building layout.

By contrast, a ductless system usually requires refrigerant lines, condensate management, electrical connections and mounting of the indoor units.

That does not make ductless installation effortless. Refrigerant piping and drainage still have to be installed correctly, and indoor-unit placement affects comfort and appearance.

But the construction problem is fundamentally different.

Central Comfort Vs Zone-Based Comfort

A ducted system naturally operates as a central air-distribution system.

A ductless system naturally operates as a collection of zones.

For example, a ducted system might condition an entire 2,000-square-foot house through one central indoor unit.

A ductless system might instead use separate indoor units for:

• Living room
• Primary bedroom
• Upstairs bedrooms
• Home office

Each arrangement can be designed in many ways, but the underlying control philosophy is different.

How Zoning Works In A Ducted System

A ducted system can be divided into zones using motorized dampers and zone controls.

For example, a two-story house could have:

• Zone 1: First floor
• Zone 2: Second floor

Thermostats or sensors can communicate demand to the zone-control system, which adjusts airflow through dampers.

However, zoning must be designed carefully.

If most of the duct system closes while the central blower continues to operate at a high airflow rate, pressure can rise unless the system is designed to handle the reduced airflow.

Modern variable-capacity equipment can help, but zoning still requires proper system design.

How Zoning Works In A Ductless System

With a multi-zone mini-split, each indoor unit can generally be controlled separately.

One bedroom can be set to a different temperature from a living room, subject to the capabilities and operating limits of the specific system.

This can be useful for households where different rooms have substantially different occupancy patterns.

However, multi-zone systems have their own design limitations. The outdoor unit must be compatible with the number and capacity of indoor units, and the system’s combined performance should be considered rather than assuming each indoor unit can always operate independently at full rated capacity.

Ducted Vs Ductless Airflow

Airflow is one of the most important technical differences.

In a ducted system, the central blower must overcome resistance from:

• Filters
• Indoor coils
• Supply ducts
• Return ducts
• Fittings
• Dampers
• Registers
• Transitions

This resistance contributes to external static pressure.

In a ductless wall-mounted mini-split, there is no comparable whole-house duct network. The indoor blower is primarily responsible for moving air across the indoor coil and distributing it directly into the room.

This does not mean ductless systems have no airflow limitations. They still have filters, coils, fans and discharge paths. But the central duct static-pressure problem is largely avoided.

What Is Static Pressure And Why Does It Matter More In Ducted Systems?

Static pressure represents resistance to airflow through the air-distribution system.

A ducted heat pump has to push air through the complete duct network.

If ducts are undersized, filters are excessively restrictive, return grilles are inadequate or dampers are improperly adjusted, airflow resistance can rise.

High static pressure can contribute to:

• Reduced airflow
• Uneven temperatures
• Increased blower workload
• Noise
• Reduced system performance
• Control problems

For this reason, ducted heat-pump commissioning should include appropriate airflow and static-pressure verification.

Duct Leakage: A Ducted-System Issue

Another difference is duct leakage.

A ducted system can lose conditioned air through poorly sealed joints and connections.

This becomes particularly important when ducts pass through unconditioned spaces such as:

• Attics
• Crawl spaces
• Garages
• Unconditioned basements

If a duct leaks into an attic during cooling, some of the air that the heat pump cooled never reaches the room.

During heating, the same problem can cause heated air to be lost before reaching the occupied space.

A ductless mini-split does not have this central distribution problem because conditioned air is delivered directly into the room.

Does Ductless Always Mean More Efficient?

No.

It is tempting to make a simple statement such as “ductless systems are more efficient because they have no ducts,” but real-world performance is more complicated.

Ductless systems can avoid duct losses, but equipment efficiency depends on the particular model, operating conditions, sizing, control strategy and installation.

Ducted systems can also achieve high efficiency when properly designed and installed.

The correct comparison should therefore use the actual certified performance of the systems being considered.

Ducted Heat Pumps And Efficiency Ratings

For ducted split heat pumps, homeowners may encounter ratings such as:

• SEER2
• EER2
• HSPF2
• COP
• Heating capacity at specific outdoor temperatures

The rating of a split system depends on the matched indoor and outdoor equipment.

AHRI provides certification programs for air-conditioning and heat-pump equipment and maintains certified performance information for equipment combinations. ([ahrinet.org](https://www.ahrinet.org/certification/ahri-certification-programs/unitary-heat-pump-equipment-includes-mixed-matched-coils-ushp?utm_source=chatgpt.com))

Therefore, homeowners comparing ducted equipment should look beyond the marketing name of the outdoor unit.

How Ductless Efficiency Can Differ In Real Homes

Ductless equipment can avoid distribution losses associated with ducts, particularly ducts located outside conditioned space.

However, the indoor unit’s location can influence how evenly heat reaches other rooms.

For example, placing one indoor unit in a large open living area does not automatically provide the same comfort in several enclosed bedrooms.

A system that looks efficient on paper may therefore require multiple indoor units to achieve the desired comfort distribution.

Heating Performance: Ducted Vs Ductless

Both systems can provide effective heating because both can use the heat-pump refrigeration cycle.

The important comparison is the performance of the specific systems at the outdoor temperatures relevant to the home.

Look for:

• Heating capacity at design temperature
• Heating capacity at lower outdoor temperatures
• Minimum modulation capacity
• Maximum heating capacity
• Auxiliary heat availability
• Defrost behavior
• Control strategy

The distribution system then determines how that heating capacity reaches the occupied spaces.

Air Temperature And Perceived Comfort

Heat pumps often operate differently from traditional furnaces.

A furnace can deliver relatively high-temperature air for shorter periods. A heat pump may deliver a larger quantity of moderately warm air over a longer period.

With a ducted system, the air is distributed through multiple registers.

With a ductless system, the indoor unit may discharge air directly into the occupied zone.

Comfort therefore depends not only on the temperature of the air but also on airflow direction, air mixing, room geometry, equipment location and operating duration.

Ducted Heat Pumps And Two-Story Homes

A two-story house can present a particular challenge for any central air-distribution system.

Heat naturally tends to move upward, solar gains can differ significantly between floors, and the cooling load on the upper floor can be substantially different from the lower floor.

A single-zone ducted system may therefore require careful airflow balancing.

A multi-zone ducted design can use separate controls and dampers.

A ductless system can instead install separate indoor units on different floors.

Neither approach automatically solves the problem. The building envelope and load distribution still need to be considered.

Ductless Mini-Splits And Room-by-Room Control

One of the strongest architectural advantages of ductless systems is their ability to place an indoor unit directly in a zone that needs conditioning.

This can be useful when:

• Some rooms are occupied only occasionally.
• Bedrooms need different temperature settings.
• An addition has no connection to the existing HVAC system.
• A converted garage needs separate conditioning.
• A home office has a different schedule.

The tradeoff is that every indoor unit introduces another piece of equipment to install, maintain and eventually replace.

What About Concealed Ductless Indoor Units?

The word “ductless” can be slightly misleading because some mini-split product families offer concealed indoor units connected to short duct runs.

These systems are still fundamentally different from a traditional whole-house ducted heat pump because the indoor unit is generally serving a limited zone rather than a large central duct network.

For a true whole-house comparison, the homeowner should therefore examine the actual indoor-unit configuration rather than relying solely on the marketing category.

Installation Complexity

Ducted Installation

A ducted retrofit can involve:

• Outdoor-unit installation
• Indoor air-handler installation
• Refrigerant piping
• Electrical work
• Condensate drainage
• Duct modifications
• Return-air modifications
• Thermostat installation
• System commissioning

If the house already has suitable ducts, much of the distribution infrastructure may already exist.

Ductless Installation

A ductless retrofit commonly involves:

• Outdoor-unit installation
• Indoor-unit mounting
• Refrigerant piping
• Condensate drainage
• Electrical connections
• Control setup

It avoids the need for a whole-house duct network but can require multiple indoor-unit installations.

Which Is Easier In A New Construction Home?

New construction changes the equation because ducts can be designed before walls and ceilings are finished.

A ducted system can be integrated into the building design from the beginning.

Duct locations, return-air paths, mechanical-room space, equipment access and register positions can all be considered during construction.

A ductless system can also work extremely well in new construction, particularly where a zone-based approach is desired.

The important difference is that new construction removes much of the retrofit penalty associated with installing ducts.

Which Is Easier In An Existing Home?

If the existing home already has a suitable duct system, replacing a conventional HVAC system with a ducted heat pump can be relatively straightforward compared with installing entirely new ducts.

If the house has no ducts, ductless equipment can avoid the need for extensive construction.

However, every existing house is different. Crawl-space access, attic access, ceiling height, floor structure and room layout can dramatically change the installation requirements.

Indoor Appearance

This is an important but often overlooked difference.

With a conventional ducted system, the visible components in the rooms are primarily:

• Supply registers
• Return grilles
• Thermostats

The main air handler is normally hidden in a mechanical space.

A wall-mounted ductless mini-split places the indoor unit in the room itself.

Some homeowners prefer this because it makes room-by-room control obvious. Others prefer the nearly invisible appearance of central ductwork.

Concealed ductless indoor units provide another option, but their installation requirements differ from a simple wall-mounted mini-split.

Noise Differences

Noise depends heavily on the particular equipment and installation.

Ducted systems can move the sound-producing blower away from occupied rooms, which can make the room itself quieter.

However, poorly designed ducts can generate airflow noise, particularly at restrictive registers or high static pressure.

Ductless indoor units place the fan directly in the occupied room. Modern units can operate quietly at low speeds, but the sound is still located within the room.

When comparing systems, look at the manufacturer’s sound ratings and consider where the indoor equipment will be installed.

Filtration Differences

A central ducted system can use a large filter at the return-air side.

A larger filter surface area can potentially reduce pressure drop compared with trying to achieve the same filtration level with a small filter.

Ductless units generally have smaller filters located within each indoor unit.

They may be easy to access, but maintenance has to be performed on multiple indoor units in a multi-zone installation.

Neither arrangement automatically provides superior indoor air quality. Filter selection, airflow, maintenance, source control and ventilation all matter.

Maintenance: Ducted Vs Ductless

A multi-zone ductless installation can therefore contain several indoor units that need individual inspection and cleaning.

A ducted system centralizes much of the indoor equipment, but introduces the additional responsibility of maintaining the duct network.

What Happens When A Ductless Indoor Unit Fails?

In a multi-zone system, the effect depends on the system architecture.

A failure affecting one indoor unit may affect only that zone, while other indoor units can potentially continue operating. However, the exact behavior depends on the outdoor unit and control architecture.

This can be an advantage for zone-specific redundancy, but it also means multiple indoor units represent multiple pieces of equipment requiring maintenance.

What Happens When A Central Ducted Indoor Unit Fails?

A central ducted system concentrates air distribution in one indoor unit.

If the central air handler or major component fails, the entire connected area can lose heating and cooling.

That centralization is both a strength and a vulnerability.

There are fewer indoor units to maintain, but there is also less physical redundancy.

Can Ducted Heat Pumps Provide Better Whole-Home Air Mixing?

A well-designed duct system can distribute conditioned air throughout the home from strategically positioned supply registers.

This can produce a very uniform appearance and airflow pattern.

However, uniformity depends on design.

A poorly balanced duct system can still produce hot and cold rooms.

Similarly, a ductless system with appropriately placed indoor units can provide excellent zone-level comfort.

The distribution architecture must therefore be evaluated together with the house layout.

Can Ductless Heat Pumps Condition An Entire House?

Yes.

A properly designed multi-zone ductless system can serve multiple rooms or areas.

But the number and location of indoor units matter.

A common mistake is assuming that one powerful indoor unit will automatically provide uniform conditioning to several enclosed rooms.

Open-plan spaces are generally easier to serve with one indoor unit than a collection of separated rooms with closed doors.

Can A Ducted Heat Pump Be Zoned?

Yes.

Ducted systems can use zoning controls, motorized dampers and multiple thermostats.

However, zoning should be designed around the equipment’s minimum and maximum airflow requirements.

A system that is technically capable of serving a large house may not operate correctly if nearly all of its duct branches are closed simultaneously.

Variable-capacity equipment can provide additional flexibility, but proper zoning design remains important.

Operating Cost: Why The Distribution System Matters

Energy consumption is determined by much more than the equipment’s advertised efficiency.

For a ducted system, losses can occur through:

• Duct leakage
• Duct conduction
• Excessive blower energy
• Improper airflow
• Incorrect equipment sizing

A ductless system avoids central duct losses but may require several indoor units and may have different operating characteristics under partial load.

The correct financial comparison should therefore consider the entire installed system rather than comparing one efficiency number.

Refrigerant Piping Differences

Both system types require refrigerant piping between the outdoor and indoor equipment, although the arrangement differs.

A ducted split system typically has one primary indoor air handler connected to the outdoor unit.

A multi-zone ductless system can have multiple refrigerant connections between the outdoor unit and individual indoor units, depending on the architecture.

Correct piping length, diameter, elevation, insulation and connection procedures are important for both.

Condensate Management

Cooling operation produces condensate because moisture can condense on the cold indoor heat exchanger.

In a ducted system, the indoor coil typically drains into a central condensate system.

In a ductless system, each indoor unit can require its own condensate drainage arrangement.

This becomes particularly important when several indoor units are installed in different rooms or floors.

Electrical Requirements

The exact electrical requirements depend on the equipment.

A ducted system may include an electric resistance backup heater inside the air handler. If so, the electrical demand can be substantially higher when that backup heater operates.

Ductless systems generally do not use a large central electric resistance heater in the same way, although equipment configurations vary.

Homeowners should ask for the electrical requirements of the complete proposed system before installation.

Which System Is More Flexible For Room Additions?

Ductless systems can be convenient for additions because a new zone can potentially be served without extending the entire central duct network.

Examples include:

• Home offices
• Sunrooms
• Garage conversions
• Finished attic spaces
• Detached living areas

A ducted system can also serve an addition, but extending the duct system may require more construction.

Which System Is Better For An Open-Plan Home?

An open-plan layout can work well with either approach.

A central ducted system can distribute air through several strategically located registers.

A ductless indoor unit can also work effectively when the zone has a large open volume and unobstructed airflow paths.

The key question is whether conditioned air can reach the entire intended area without significant temperature stratification.

Which System Is Better For Many Small Closed Rooms?

There is no universal answer.

A ducted system naturally connects multiple rooms through the supply and return network.

A ductless system may require multiple indoor units if individual closed rooms need independent conditioning.

That can improve zoning but increase equipment count and installation complexity.

Ducted Vs Ductless: The Technical Trade-Off

How To Decide Between Ducted And Ductless

Instead of asking which technology is universally better, start with the building.

Step 1: Does The Home Already Have Ductwork?

If yes, determine whether it is suitable for the proposed equipment.

Step 2: Is The Ductwork In Condition To Reuse?

Inspect leakage, insulation, airflow and physical condition.

Step 3: How Many Zones Are Needed?

Consider whether the family needs centralized control or significant room-by-room temperature differences.

Step 4: Where Can Indoor Equipment Be Located?

For ductless systems, indoor-unit placement becomes a major design consideration.

Step 5: Consider Electrical And Backup Heat Requirements

Compare the complete electrical requirements of the proposed systems.

Step 6: Compare The Complete Installed Cost

Include duct modifications, indoor units, electrical work, controls, condensate work and commissioning.

Questions To Ask A Ducted Heat-Pump Contractor

• What are my calculated heating and cooling loads?
• Can my existing ducts handle the proposed system?
• What airflow does the equipment require?
• What static pressure do you expect?
• Will you measure airflow after installation?
• What indoor and outdoor models are being proposed?
• What is the AHRI Certified Reference Number?
• What backup heat will be installed?
• How will the return-air system be evaluated?
• Which ducts need modification?
• How will duct leakage be addressed?

Questions To Ask A Ductless Contractor

• How many indoor units are required?
• Why is each indoor unit being placed where it is?
• Can each room maintain the required temperature?
• What happens when only one indoor unit calls for heating?
• What are the minimum and maximum capacities?
• How will condensate be drained?
• What refrigerant piping lengths are required?
• How will the system be serviced?
• What are the indoor-unit sound ratings?
• What happens if one indoor unit fails?

Common Mistakes When Comparing Ducted And Ductless Heat Pumps

Comparing Only SEER2

Cooling efficiency is important, but it does not describe the entire heating and cooling system.

Ignoring Heating Capacity

A system’s heating output at relevant outdoor temperatures should be examined.

Assuming Existing Ducts Are Automatically Suitable

Old ducts should be evaluated rather than automatically reused.

Assuming One Ductless Indoor Unit Can Serve The Entire House

Room layout and airflow paths matter.

Ignoring Return Air

Supply ducts alone do not make a properly functioning central system.

Ignoring Indoor Equipment

The indoor unit is part of the complete heat-pump system and can affect certified performance.

Choosing Equipment Before Calculating The Load

Equipment selection should follow the building load rather than the other way around.

Frequently Asked Questions

1. Is a ducted heat pump the same as a central heat pump?

The terms are often used interchangeably when referring to a central ducted air-source heat-pump system. The important characteristic is that the indoor unit distributes conditioned air through a duct network.

2. Is a ductless mini-split a heat pump?

Many mini-splits are heat pumps capable of both heating and cooling, although the exact product configuration should be checked before purchase.

3. Which requires ducts?

A conventional ducted heat pump requires an air-distribution duct system. A standard ductless mini-split does not.

4. Can I convert my existing central AC to a heat pump?

In some homes, replacing the existing outdoor equipment and compatible indoor components can create a ducted heat-pump system. The existing indoor coil, air handler, electrical system and ductwork must be evaluated for compatibility.

5. Are ductless systems always more efficient?

No. Ductless systems can avoid duct losses, but efficiency depends on the specific equipment, operating conditions, controls and installation.

6. Can ductless heat pumps heat multiple rooms?

Yes. Multi-zone systems can connect multiple indoor units to a compatible outdoor unit. Proper sizing and indoor-unit placement are important.

7. Can ducted heat pumps have multiple thermostats?

Yes, when a properly designed zoning system is installed.

8. Are ductless mini-splits noisy?

Modern indoor units can operate quietly, particularly at low fan speeds. However, the indoor fan is located inside the occupied space, so its sound is more directly noticeable than a remote central air handler.

9. Are ducted systems quieter?

They can be, particularly when the air handler is located away from occupied rooms. However, poorly designed ducts and restrictive registers can create airflow noise.

10. Which system is easier to install without existing ducts?

A ductless system generally avoids the need to construct a whole-house duct network, although refrigerant piping, electrical connections and condensate drainage still require professional installation.

11. Can ductless systems use filters?

Yes. Indoor units normally contain filters, but their size and filtration capability differ from central HVAC filter arrangements.

12. Can ducted systems provide room-by-room temperature control?

Yes, with a properly designed zoning system. However, zoning requires coordination between dampers, thermostats, airflow and equipment capacity.

13. Can I use existing furnace ducts with a heat pump?

Potentially. The ducts should be evaluated for airflow, static pressure, leakage, insulation and compatibility with the new equipment.

14. Does ductless mean there are no installation losses?

No. Ductless systems eliminate central duct losses, but installation quality still matters. Refrigerant piping, condensate drainage, electrical work, equipment placement and controls can all affect performance.

15. Which system is easier to maintain?

Maintenance is centralized in a ducted system but distributed across indoor units in a multi-zone ductless system. The practical workload depends on the equipment configuration.

16. Can a ducted heat pump work with a furnace?

Yes. A heat pump can be combined with a gas furnace in a dual-fuel configuration.

17. Does a ductless heat pump need return ducts?

A standard ductless indoor unit recirculates room air locally and therefore does not require a central return-duct system.

18. Which system is better for a house with existing ducts?

The existing duct condition, building load, desired zoning, equipment selection and installation requirements should be evaluated together. Suitable existing ducts can make a ducted system particularly practical, while a ductless system may still be considered when zone-level control is important.

19. Which system is better for an older house with no ducts?

Ductless equipment can avoid the need to construct a complete duct network. A ducted solution is also possible if new ductwork can be installed appropriately.

20. What is the biggest difference between ducted and ductless heat pumps?

The biggest difference is the air-distribution architecture. A ducted heat pump uses a central air handler and ducts, while a conventional ductless mini-split uses indoor units that condition individual zones directly.

Final Takeaway

Ducted and ductless heat pumps use the same fundamental idea—moving heat through a refrigeration cycle—but they solve the air-distribution problem in very different ways.

A ducted heat pump centralizes the indoor equipment and uses supply and return ducts to distribute conditioned air throughout the house. This makes it a natural choice for homes with suitable existing ductwork or new homes where a central forced-air system is desired.

A ductless mini-split removes the central duct network and places indoor heat-exchange units directly in the rooms or zones being conditioned. This can make it particularly useful for homes without ducts, additions, renovations and situations where independent zone control is important.

The comparison should therefore begin with the building rather than with a marketing claim about one technology being universally superior.

Before choosing either system, examine the building load, existing infrastructure, required zones, equipment capacity, installation requirements and long-term maintenance.

For homeowners specifically comparing central ducted systems, continue to:

Best Ducted Heat Pumps In The USA