Ductless HVAC

Heil Ductless HVAC D5FLAA QuietComfort Light Commercial Air Handler

Schedule Service Check Availability

Heil Ductless and mini-split HVAC Ductless HVAC Repair, maintenance, and replacement planning

Technical Specifications

Product Specs

Brand: Heil
Official model: D5FLAA
Official product name: QuietComfort Light Commercial Air Handler
Product category: ductless-systems
Series: Commercial
Timely registration required for 10-year parts limited warranty. Limited warranty period is 5 years if not registered within 90 days of installation. Jurisdictions where warranty benefits cannot be conditioned on registration will receive the registered limited warranty periods. Please see warranty certificate for further details and restrictions.
If compressor, coil or heat exchanger fails due to defect during the applicable No Hassle Replacement limited warranty time period, a one-time replacement with a comparable unit will be provided.
4-way installation (Up flow, Down flow, Right, Left)
New aluminum coil
Automatic Airflow Technology with static pressure up to 0.8 in WG
Less than 2% air leakage
Easy maintenance
Quiet indoor operation
Anti-corrosive fin coating
Wireless remote control included
24V interface for third-party thermostat compatibility (optional accessory)
Compatible with R-454B refrigerant which continues our legacy of dedication to environmental stewardship. This refrigerant achieves a remarkable 75% reduction in global warming potential while preserving the non-ozone depleting properties of our previous refrigerant.
Factory installed refrigerant leak detection system (sensor and control board)
10-Year Parts Limited Warranty 2
5-Year No Hassle Replacement Limited Warranty™ 3
Sound: as low as 25.5 decibels 1
Sizes: 3.0 – 5.0 tons
208/230V
Official source: Heil product page
Model or series: D5FLAA QuietComfort Light Commercial Air Handler
Equipment type: Ductless HVAC
Product group: Ductless and mini-split HVAC
System role: Indoor air-moving unit for a matched heating and cooling system
Application: Commercial, light-commercial, or managed-building HVAC and water-heating applications
Compatibility check: Match with compatible outdoor equipment, controls, airflow, voltage, and capacity before service or replacement.
Verified source: heil-hvac.com

Useful troubleshooting details

Confirm the exact D5FLAA Ductless HVAC model number, serial number, capacity, voltage, refrigerant or fuel type, controls, and matched equipment.
Share current symptoms, alerts or error codes, recent maintenance, access notes, and whether the issue is urgent or planned.
For replacement planning, note comfort goals, existing equipment age, and any heat-pump, electrification, or rebate-related questions.

Service planning

How GreenFlow handles D5FLAA QuietComfort Light Commercial Air Handler requests

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.

Describe the service issue

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

Review access and history

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

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

Murali S.

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

Melissa S.

The repair person came quickly and was super efficient and polite, and showed me what to do next time. He gave my dog a quick pay and was off again.

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...

John F.

I needed 2 new AC units and decided to go with high efficiency heat pumps. I chose Greenflow because of the equipment they offered, and the price (2nd lowest quote and much cheaper than the average of all quote we received). Their technicians were very detail oriented and...

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