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Air handler

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Navien Air handler NAS Series

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Navien HVAC systems, A/C and heat pumps Air handler Repair, maintenance, and replacement planning
Navien NAS Series product image

Technical Specifications

Product Specs

  • Brand: Navien
  • Model or series: NAS Series
  • Equipment type: Air handler
  • Product group: HVAC systems, A/C and heat pumps
  • System role: Indoor air-moving unit for a matched heating and cooling system
  • Application: Residential, light-commercial, or managed-property comfort applications
  • Compatibility check: Match with compatible outdoor equipment, controls, airflow, voltage, and capacity before service or replacement.
  • Verified source: navieninc.com

Useful troubleshooting details

  • Confirm the indoor air handler or coil model, paired outdoor unit, thermostat or communicating control, filter size, drain setup, refrigerant, and capacity.
  • Share weak airflow, blower behavior, coil icing, humidity, condensate, refrigerant, filter, or control-message symptoms.
  • For matched-system work, identify whether the indoor equipment is being paired with an AC, heat pump, furnace, or replacement outdoor unit.

Service planning

How GreenFlow handles NAS Series 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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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...

Michael C.

always available, easy to get a hold of, as a property manager I get lots no heat emergency, usually get to it same day or next day

Jenny W.

Great service! On time, knowledgeable & professional

Michele Z.

Andrey was professional, prompt, smart, thorough and exceedingly pleasant. We are likely switching our current HVAC company to Green Flow.

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