Ductless HVAC

Heil Ductless HVAC D5FSDA QuietComfort® 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: D5FSDA
Official product name: QuietComfort® Ducted Indoor Unit
Product category: ductless-systems
Series: Standard
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.
Modes: Cool, Heat, Dry, Fan, Auto
Vertical or horizontal installation
High static option available
Up to 0.8 in WG
Rear or bottom return
Outside air intake
Built-in condensate lift pump
Follow Me (senses temperature at handheld remote)
Heating Setback (46° F Heating Mode)
Quiet indoor operation
Anti-corrosive fin coating
Factory installed refrigerant leak detection system (sensor and control board)
Single-zone and multi-zone compatible
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.
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 tons
Official source: Heil product page
Model or series: D5FSDA QuietComfort® Ducted Indoor Unit
Equipment type: Ductless HVAC
Product group: Ductless and mini-split HVAC
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: heil-hvac.com

Useful troubleshooting details

Confirm the exact D5FSDA 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 D5FSDA QuietComfort® 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

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.

Dev W.

I had a breakdown of my cooling system and Hanna at Green Flow responded to my request right away. They scheduled me same day. The team at Green Flow was easy to communicate with over phone and text. They kept me updated on delays on arrival of the...

Michele Z.

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

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.

View All