DUCTLESS HEAT PUMPS • SERVICE • REPAIR • MAINTENANCE • INSTALLATION • REPLACEMENT
Ductless heat pump & mini-split service, repair and installation in Toronto and the GTA.
DAVESDUCTS services, diagnoses, repairs, maintains, replaces and installs applicable ductless heat-pump and mini-split systems. Whether an existing system is not heating, not cooling, leaking, displaying an error code or making unusual noise — or you are planning a new single-zone or multi-zone system — we can evaluate the complete application.
SERVICE & REPAIR
Already have a ductless system? We can service and repair it.
A mini-split that is not performing properly does not automatically need replacement. DAVESDUCTS can diagnose applicable ductless equipment and determine whether maintenance, repair, correction or replacement is appropriate.
Not Heating
Diagnose applicable refrigeration, defrost, airflow, sensor, control and equipment concerns when the system is not delivering expected heat.
Not Cooling
Investigate applicable refrigeration, coil, fan, airflow and control problems affecting cooling performance.
Error Codes / No Start
Use the manufacturer, model, displayed fault and operating symptoms to diagnose the underlying problem.
Water Leaks
Investigate condensate drainage, pumps where applicable, dirty components and other causes of indoor-unit water leakage.
Noise / Fan Problems
Diagnose abnormal indoor or outdoor fan operation, vibration and other unusual operating noise.
Repair vs Replacement
Where equipment condition, age or parts availability makes repair impractical, we can review replacement options.
BEFORE THE SERVICE CALL
Send us the manufacturer, model number, error code and photos.
Photos of the indoor unit, outdoor unit and rating plates — along with a description of exactly what the system is doing — can help us prepare for the diagnostic visit.
WHERE DUCTLESS WORKS WELL
Heating and cooling where a conventional duct system is unavailable or impractical.
Ductless systems can provide targeted heating and air conditioning without extending a full supply-and-return duct network through the building.
Homes Without Ductwork
Add heating and cooling to homes where installing a traditional central duct system would be disruptive or impractical.
Additions & Renovations
Condition a new addition or renovated area without automatically extending the existing central HVAC system.
Upper Floors & Lofts
Provide dedicated conditioning for difficult upper-level areas where existing ductwork does not perform well.
Garages & Studios
Where appropriate, provide independent comfort for detached or isolated spaces.
Boiler / Radiant Homes
Add air conditioning and heat-pump heating to homes that use hydronic heat and may have no central air ducts.
Cottages & Specialty Spaces
Use individual zones where a conventional central duct system may not make practical sense.
HOW IT WORKS
A ductless heat pump moves heat in either direction.
The outdoor unit and indoor unit or units are connected by refrigerant piping, control wiring and condensate drainage. In cooling mode the system moves heat outdoors; in heating mode it reverses the refrigeration cycle to move heat indoors.
01
Outdoor Unit
The outdoor equipment contains the compressor and other refrigeration components used to transfer heat.
02
Refrigerant Lines
Refrigerant piping connects the outdoor equipment with each applicable indoor unit.
03
Indoor Unit
The indoor unit moves room air across its coil and delivers conditioned air directly to the zone.
04
Variable Capacity
Many modern ductless systems use inverter-driven compressors that can vary output as operating conditions and demand change.
SYSTEM CONFIGURATION
Single-zone, multi-zone or concealed ducted?
The right configuration depends on the number of spaces, individual heating and cooling loads, floor plan, aesthetics, equipment compatibility and how independently the zones need to operate.
Single Zone
One compatible indoor unit connected to one outdoor unit for a dedicated room, addition, garage, suite or other area.
Multi Zone
Multiple compatible indoor units connected to an appropriate outdoor system, with individual zone control subject to the selected equipment.
Concealed Ducted
Compact ducted mini-split air handlers can serve one or several nearby rooms through short duct runs while concealing the indoor equipment.
INDOOR UNIT OPTIONS
A wall-mounted head is not the only option.
Available indoor-unit styles vary by manufacturer and system family. The building layout, architecture and service access should be considered before choosing the equipment.
High Wall
The familiar wall-mounted mini-split head provides direct room conditioning and is commonly used in retrofit applications.
Floor Console
Low-wall or floor-mounted equipment can suit spaces where high-wall placement is undesirable or impractical.
Ceiling Cassette
Recessed ceiling equipment may be available where ceiling construction, clearances and service access permit it.
Concealed Ducted
Compact air handlers can be hidden and connected to short duct runs serving nearby rooms.
COLD-CLIMATE HEAT PUMPS
Ductless is not only an air-conditioning solution.
Cold-climate ductless heat pumps are designed to operate at low outdoor temperatures. Actual heating capacity and efficiency vary by model and outdoor temperature, so equipment should be selected against the heating requirements of the space rather than assuming every mini-split performs the same way in winter.
Primary Heating
In an appropriate application, selected cold-climate equipment may provide a significant or primary share of the building’s heating.
Supplemental Heating
Ductless can also work alongside a furnace, boiler, radiant system, electric heat or another heat source.
Model-Specific Performance
Low-temperature capacity, operating range and efficiency should be confirmed for the exact equipment being proposed.
PROPER INSTALLATION
The equipment location affects comfort, appearance and future serviceability.
A good ductless installation requires more planning than choosing an empty wall for the indoor unit.
Equipment Sizing
Room area alone does not determine capacity. Building envelope, windows, orientation, occupancy and other heating and cooling loads matter.
Indoor Air Distribution
Indoor units should be positioned where conditioned air can reach the intended space without being obstructed or creating avoidable comfort problems.
Lineset Routing
Refrigerant piping should respect manufacturer requirements while considering appearance, protection and future service access.
Condensate Management
Cooling produces water. Gravity drainage, slope and any required condensate pump should be planned as part of the installation.
Electrical Requirements
The selected equipment requires an appropriate electrical supply and associated electrical work.
Outdoor Unit Location
Clearances, snow, drainage, service access, noise considerations and manufacturer requirements should influence placement.
MAINTENANCE
Keep both sides of the ductless system working properly.
Ductless systems have indoor coils, filters, blowers, condensate components and outdoor equipment that require appropriate inspection and maintenance. Neglect can affect airflow, drainage, comfort and equipment performance.
Indoor Units
Inspect applicable filters, coils, blowers and accessible internal components for loading and operating concerns.
Condensate System
Inspect applicable drains and pumps where installed and investigate evidence of leakage or restriction.
Outdoor Equipment
Inspect accessible outdoor components, coil condition, clearances and operating condition as appropriate.
REPLACEMENT
Replacing a mini-split is an opportunity to correct the old installation.
A replacement project should review more than the old unit’s nominal capacity. Existing linesets, electrical requirements, drainage, indoor-unit locations, outdoor-unit location, zone loads and equipment compatibility should all be considered.
Existing Equipment Review
Identify the current equipment, configuration and reason replacement is being considered.
Installation Review
Look for existing routing, drainage, placement or serviceability issues that should not simply be repeated.
New Equipment Selection
Select appropriate equipment around current building requirements and model-specific performance rather than assuming a like-for-like swap is best.
DAVESDUCTS APPROACH
Design the system around the rooms — not just the number of heads.
A multi-zone system should not simply be selected by adding together room areas. Individual zone loads, outdoor-unit performance, diversity, equipment compatibility, architecture and the intended heating strategy should all be considered.
One contractor through the equipment lifecycle.
DAVESDUCTS can help with system planning and installation, then continue with maintenance, diagnostics, service and repair after the equipment is operating.
CUSTOM HOMES & RENOVATIONS
Ductless can be part of a larger mechanical strategy.
In custom construction and major renovations, ductless equipment can be coordinated with central heat pumps, hydronic systems, ventilation, filtration and architectural requirements instead of being treated as an isolated add-on.
Mechanical Planning
Determine where ductless makes sense relative to the rest of the heating and cooling system.
Architectural Coordination
Plan indoor-unit locations, concealed equipment, lineset routes and outdoor equipment before finishes restrict the options.
Complete HVAC Strategy
Coordinate ductless with other mechanical systems serving the home.
SERVICE REQUEST
What should you send us?
- Project address / municipality
- Manufacturer and model number
- Photos of the indoor and outdoor rating plates
- Photos showing the indoor and outdoor equipment
- Exact error code if one is displayed
- Description of the problem and when it occurs
- Whether the problem affects heating, cooling or both
- Whether there is water leakage, unusual noise or icing
- For new systems: floor plans or room dimensions where available
DUCTLESS HEAT PUMP FAQ
Service, repair and installation questions.
Does DAVESDUCTS repair ductless heat pumps and mini-splits?
Yes. DAVESDUCTS diagnoses and repairs applicable ductless heat-pump and mini-split systems, in addition to maintaining, replacing and installing them.
Can DAVESDUCTS service a ductless system it did not install?
Yes, for applicable equipment within our service scope. Send the manufacturer, model number, error code if present and photos when requesting service.
Can a ductless heat pump both heat and cool?
Yes. A heat-pump mini-split can provide cooling and reverse its refrigeration cycle to provide heating.
Do ductless heat pumps work during an Ontario winter?
Cold-climate models are designed for low-temperature operation, but actual capacity and efficiency vary by model and outdoor temperature. The exact equipment should be evaluated against the heating load.
Does every room need an indoor unit?
Not necessarily. The appropriate zoning depends on floor plan, loads, room usage, door positions and indoor-unit style. Closed bedrooms generally require more deliberate planning than open spaces.
Can ductless be added to a home with a boiler or radiant heat?
Yes. Homes without central ductwork are a common application because ductless can add cooling and heat-pump heating while the hydronic system remains in place.
Why is my mini-split leaking water?
Condensate drainage, pumps where applicable, dirty components, restrictions or installation conditions can contribute to leakage. The cause should be diagnosed rather than assumed.
What does a ductless error code mean?
Error codes are manufacturer- and model-specific. The code is useful diagnostic information, but the underlying condition still needs to be identified before deciding on a repair.
Do ductless systems require maintenance?
Yes. Filters, indoor coils, blower components, condensate drainage and outdoor equipment require appropriate inspection and maintenance.
Can you replace an older ductless system?
Yes. Existing linesets, electrical supply, drainage, equipment locations and the current heating/cooling requirements should be reviewed before selecting replacement equipment.
Can one outdoor unit serve several indoor units?
Yes, with an appropriate compatible multi-zone system. The number and combination of indoor units are subject to the selected equipment and system design.
Should I choose single-zone or multi-zone equipment?
That depends on the individual zone loads, required control, building layout, equipment performance and project priorities. Multiple single-zone systems can sometimes be preferable to one multi-zone system, while other projects favour multi-zone equipment.
SERVICE • REPAIR • MAINTENANCE • REPLACEMENT • INSTALLATION
Need help with a ductless heat pump?
DAVESDUCTS can diagnose and repair your existing mini-split, maintain the equipment, replace an aging system or design and install a new ductless solution around the property.
