Build with confidence
You'll only see complete equipment combinations approved for the selected rooms.
Professional comfort, made easier to shop
Build Your MRCOOL Olympus Mini-Split System
Build a single-zone or multi-zone Olympus system using the indoor-unit styles and capacities that fit your space. We'll help you match the equipment, choose your line sets, and put the complete system together.
Equipment that works together
In-stock choices
One complete system
Start building your system
One platform. More ways to deliver comfort.
Why choose MRCOOL Olympus?
Olympus is MRCOOL's professionally installed mini-split line for one room or several. Choose wall-mounted, ceiling cassette, or concealed ducted indoor units, and the builder will put together the matching equipment and traditional refrigerant line sets.
Design around the room
Multi-zone systems can combine wall-mounted, square four-way cassette, and concealed ducted indoor units.
Buy the whole system
Add the outdoor unit, indoor units, and correctly sized traditional line sets to your cart together.
Olympus system builder
What type of system are you building?
Start with one room or several. We'll guide you through the choices that fit your system.
Olympus uses traditional HVAC installation
Unlike the MRCOOL DIY Series, Olympus uses conventional copper line sets and professional HVAC installation methods. The refrigerant piping is connected, leak tested, evacuated with a vacuum pump, and the system is commissioned before startup. Many customers purchase the complete system themselves and have a local HVAC professional handle the final installation and startup.
Choose the right architecture
Single-zone vs. multi-zone Olympus
Focused comfort
Olympus single zone
A dedicated outdoor and wall-mounted indoor pair for one room or area. Current systems are available at 9K, 12K, 18K, and 24K BTU.
- Compatible complete-system pairing
- Wall-mounted indoor unit
- Dedicated temperature control
Whole-home flexibility
Olympus multi zone
One compatible condenser serving two to six indoor units. Choose each room's capacity and mix indoor-unit styles where the equipment combination allows.
- Manufacturer-approved room combinations
- Wall, cassette, and ducted choices
- One traditional line set per room
Fit the indoor unit to the space
Choose your indoor-unit style
Multi-zone Olympus systems can use one style throughout or mix compatible styles across rooms. Current single-zone systems remain wall-mounted only.
Wall mounted
The classic mini-split setup. A great choice for bedrooms, garages, living spaces, offices, shops, and most everyday applications.
Four-way ceiling cassette
A clean, built-in look that distributes air in four directions. Great for open rooms, finished spaces, and places where you don't want an indoor unit mounted on the wall.
Concealed ducted
Hide the indoor unit above the ceiling and distribute air through short duct runs. A great option when you want the equipment out of sight.
Plan the complete installation
Olympus uses traditional HVAC installation
Unlike the MRCOOL DIY Series, Olympus uses conventional copper line sets and professional HVAC installation methods. The refrigerant piping is connected, leak tested, evacuated with a vacuum pump, and the system is commissioned before startup. Many customers purchase the complete system themselves and have a local HVAC professional handle the final installation and startup.
- 1
Configure
Select the system type, room capacities, indoor styles, and line-set lengths.
- 2
Review
See the matching outdoor unit, indoor units, line sets, and complete package price.
- 3
Install
A qualified professional completes flaring, electrical work, pressure testing, evacuation, charging as required, and startup.
Traditional refrigerant piping
Choose a line-set length for every room
Measure the path from each indoor unit to the outdoor condenser with your installer. The builder shows only the traditional flare line sets that fit the selected equipment and are currently available.
- One line set per indoor unitEach room needs its own path back to the condenser
- Compatible sizes onlyQuick Connect products are not used with Olympus
- Confirm the route before orderingYour installer should account for bends, elevation, and service access
Straight answers before you build
MRCOOL Olympus frequently asked questions
What is the MRCOOL Olympus Series?
MRCOOL Olympus is a professionally installed mini-split family with single-zone and multi-zone equipment. It uses conventional field-installed refrigerant piping and supports multiple indoor-unit formats in compatible multi-zone combinations.
What is the difference between MRCOOL DIY and Olympus?
The DIY Series is designed around simplified homeowner installation and pre-charged Quick Connect line sets. Olympus uses traditional HVAC installation methods, including field-installed flare piping, evacuation, leak testing, electrical connection, and commissioning.
Can Olympus support multiple indoor units?
Yes. Current Olympus multi-zone condensers support approved combinations of two to six connected indoor units. The exact number and capacities depend on the model-specific matchup table; the configurator accepts only those explicit combinations.
Can I mix wall-mounted, cassette, and concealed ducted indoor units?
Yes, in a compatible multi-zone combination. Current indoor choices include wall-mounted units, square four-way ceiling cassettes, and concealed ducted units at 9K, 12K, 18K, and 24K BTU.
What is a four-way ceiling cassette?
It is a square indoor unit installed in the ceiling that distributes conditioned air in four directions. It can preserve wall space and provide broad room air distribution.
Does MRCOOL Olympus use Quick Connect line sets?
No. Olympus uses traditional field-installed flare refrigerant line sets. The builder does not substitute DIY Quick Connect, No-Vac, coupler-extension, or unrelated central-system line sets.
Does an Olympus installation use a vacuum pump?
Yes. The MRCOOL installation instructions call for evacuation as part of traditional HVAC installation, along with pressure and leak testing before commissioning.
Can I install Olympus myself?
Olympus should be installed according to MRCOOL instructions and applicable requirements by qualified professionals. The work includes conventional refrigerant piping, electrical connection, evacuation, leak testing, final charge verification, and commissioning.
How do I choose the right line-set length?
Choose a sellable length that reaches from the assigned outdoor-unit port to that zone's indoor unit while staying within both the individual-run and total-system piping limits. Your installer should confirm the actual route before purchase.
What happens when piping is longer than the standard charge length?
A permitted longer piping configuration may require additional refrigerant during professional installation. The configurator warns without presenting an unresolved numeric estimate; the installer should verify the final charge using the MRCOOL instructions.
Technical confidence when you need it
Olympus documentation and support
Use the buying flow for a compatible system, then go deeper with installation, performance, matchup, and piping information from the existing Knowledge Center and official MRCOOL documents.
Knowledge CenterOlympus E Star single-zone guideModels, documentation, and product context
Official manualMulti-zone Installation & Owner's ManualInstallation, piping, electrical, and commissioning guidance
Official brochureMulti-zone performance and matchupsEquipment overview and approved connected-unit combinations
A complete system, not a collection of guesses
Ready to build your Olympus system?
Use the configurator to assemble a compatible equipment package. If your project needs another review, our team can help verify the configuration before installation.