National Mini Splits equipment directory

Shop all MRCOOL categories

Browse every live equipment department, compare real products and prices, or start with a project type. Exact-model search, compatibility reminders and original buying resources stay connected throughout the catalog.

Shop by project and customer type

Start with how you plan to use the equipment.

These paths organize the same live MRCOOL catalog around common buying workflows. Final sizing, compatibility, installation and code requirements remain model- and project-specific.

NMS PROJECT ROUTINGSame catalog. A clearer starting point.

Industry paths are organizational tools, not a claim that a product is suitable for every property or application within that industry.

Tell us about the project →
Buying and ownership resources

Move from browsing to a documented equipment plan.

Use original National Mini Splits guides to frame the project, then rely on current model documentation and applicable requirements for final decisions.

01System sizing

Start with more than square footage.

02Installation planning

Electrical, drainage, mounting and access.

03Refrigerant changes

Keep equipment generations compatible.

04Document checklist

Preserve manuals, models and purchase records.

0550 state guides

Climate context and official gateways.

06Video workshop

Official MRCOOL demonstrations.