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Wall-mounted indoor unit

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Fujitsu Wall-mounted indoor unit Altair 300 KNAS1

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Fujitsu AIRSTAGE single-room mini-split systems Wall-mounted indoor unit Repair, maintenance, and replacement planning
Fujitsu Altair 300 KNAS1 product image

Technical Specifications

Product Specs

  • Series code: KNAS1
  • Size (kBTU/h): 9, 12
  • Sound Level: As low as 20dB
  • SEER2: As high as 17.0 BTU/hW
  • HSPF2: As high as 9.0 BTU/hW
  • Energy Star: No
  • Cooling Operating Range: 50°F to 126°F (10°C to 52°C)
  • Heating Operation Range: 5°F to 75°F (-15°C to 24°C)
  • Listed model: ASLH09KNAS 9,000 BTU/h 0.75-Ton 115V Wall-Mounted Indoor Unit
  • Listed model: 9,000 BTU/h 0.75-Ton 115V Wall-Mounted Indoor Unit Compatible Outdoor Units AOLH09KNAS1 9,000 BTU/h 0.75-Ton 115V Compact Outdoor Unit ASUH09KNAS 9,000 BTU/h 0.75-Ton 203-230V Wall-Mounted Indoor Unit
  • Listed model: 9,000 BTU/h 0.75-Ton 203-230V Wall-Mounted Indoor Unit Compatible Outdoor Units AOUH09KNAS1 9,000 BTU/h 0.75-Ton 203-230V Compact Outdoor Unit ASLH12KNAS 12,000 BTU/h 1-Ton 115V Wall-Mounted Indoor Unit
  • Listed model: 12,000 BTU/h 1-Ton 115V Wall-Mounted Indoor Unit Compatible Outdoor Units AOLH12KNAS1 12,000 BTU/h 1-Ton 115V Compact Outdoor Unit ASUH12KNAS 12,000 BTU/h 1-Ton 203-230V Wall-Mounted Indoor Unit
  • Brand: Fujitsu
  • Model or series: Altair 300 KNAS1
  • Equipment type: Wall-mounted indoor unit
  • Product group: AIRSTAGE single-room mini-split systems
  • System role: Ductless or mini-split system equipment
  • Application: Residential, light-commercial, or zone-control comfort applications
  • Compatibility check: Match with compatible outdoor equipment, controls, airflow, voltage, and capacity before service or replacement.
  • Verified source: fujitsugeneral.com

Useful troubleshooting details

  • Confirm the indoor unit model, outdoor unit model, serial number, refrigerant type, and controller type before scheduling.
  • Share photos of the indoor unit, outdoor unit, disconnect, filters, drain line, controller, and access area.
  • Note whether the concern is no cooling, no heat, weak airflow, noise, water leak, icing, error code, remote/controller issue, or uneven room comfort.

Service planning

How GreenFlow handles Altair 300 KNAS1 requests

1

Identify the equipment

Confirm the model or series name, serial number if available, photos, and whether the unit is roof, exterior, basement, or mechanical-room equipment.

2

Describe the service issue

Share no heat, no cooling, weak airflow, error codes, alarms, leaks, noise, control problems, or comfort complaints.

3

Review access and history

Include access notes, tenant or business-hour constraints, filter status, recent repairs, and maintenance records when available.

4

Plan the next step

GreenFlow can route the request for diagnostics, repair planning, maintenance, replacement scope, or related system upgrades.

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Our Happy Customers

Randy J.

Thanks to Andrey for an amazingly quick response to my request for a service call. He diagnosed and fixed my issue within 24 hours of my asking for help. Excellent service. Thanks.

Murali S.

HVAC technician was punctual, followed up well, completed quick repairs, ensured the issue was resolved, and provided helpful recommendations.

Neal V.

In an industry that often fraught with contractors taking advantage of homeowners, Andrey was honest with his assessment and willing to install a product acquired elsewhere (most want that margin themselves), patiently answered my questions (I’m an engineer so like to understand what’s happening), and proactively offered practical...

Jenny W.

Great service! On time, knowledgeable & professional

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