Ductless HVAC

Heil Ductless HVAC D5FLDA QuietComfort Light Commercial Ducted Indoor Unit

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: D5FLDA
Official product name: QuietComfort Light Commercial Ducted Indoor Unit
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.
Vertical (sizes 36 & 48) or horizontal installation
Up to 0.8 in WG
Rear or bottom return
Outside air intake
Built-in condensate lift pump (high static units)
Follow Me (senses temperature at handheld remote)
Heating Setback (46° F Heating Mode)
Quiet indoor operation
Anti-corrosive fin coating
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.
Single-zone compatible
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 22 decibels 1
Sizes: 0.5 – 4.8 Ton
208/230V
Official source: Heil product page
Model or series: D5FLDA QuietComfort Light Commercial Ducted Indoor Unit
Equipment type: Ductless HVAC
Product group: Ductless and mini-split HVAC
System role: Ductless or mini-split system equipment
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 D5FLDA 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 D5FLDA QuietComfort Light Commercial Ducted Indoor Unit 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.

Popular cities

Service Areas

Our Happy Customers

Michele Z.

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

Anna F.

They showed up within an hour of me making the call on a Sunday. They fixed our system and taught us how to replace the fuse in the future. We would definitely call again.

Anna G.

They quickly identified the issue with the heating system and fixed it efficiently. He explained everything clearly and made sure I understood what was going on. Very professional and reliable, extremely satisfied with the service.

Jahangir R.

They were very organized to communicate and be on time to come to look at my air condition to fix it.

View All