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HVAC Dehumidifiers for Ducted Whole-Home and Commercial Building Humidity Control
What HVAC Integration Adds Over a Portable Dehumidifier
An HVAC dehumidifier connects to existing ductwork or a return-side plenum to condition the entire airflow envelope of a building from a single chassis, rather than addressing one room at a time. The integration matters in three scenarios: whole-home humidity control where portable units cannot reach all conditioned spaces, commercial buildings where dedicated humidity loops support production or occupant comfort, and HVAC retrofits where adding active dehumidification corrects undersized AC sensible-cooling capacity. The Ebac CD, K, RM, and AD-series HVAC dehumidifiers in this collection are engineered for ducted installation with proper static pressure ratings, drain pan configuration, and refrigerant cycle behavior tuned for sustained low-RH operation rather than the cycling profile of portable consumer units.
Sizing HVAC Dehumidifiers by CFM Through the Duct System
HVAC dehumidifier sizing follows duct CFM and the moisture load of conditioned space. The Ebac CD30 series (24 PPD) handles small zoned ductwork in residential bathrooms or single-room HVAC integration. The CD60 (60 PPD), CD85 (75 PPD), and CD100/CD100E (90–97 PPD) cover whole-home residential ducted installations across 1,500 to 4,000 sq ft. The K100 series (97 PPD) and CD200 (138 PPD, 664 CFM) step up to commercial building HVAC integration — small office buildings, restaurants, light industrial. The AD850E (95 PPD) and Freestar series handle dedicated heavy-duty commercial HVAC drying. The K100E adds WiFi telemetry for remote humidity monitoring on installations that span multiple sites or unattended properties.
Related: All Dehumidifiers · Ebac Dehumidifiers · Whole House Dehumidifiers · Commercial Dehumidifiers
HVAC Installation Considerations and Drain Configuration
HVAC dehumidifier installation requires three site-condition decisions. Static pressure rating: confirm the unit's external static pressure rating matches the duct system's design — undersized static will limit airflow and cap effective dehumidification. Drain configuration: HVAC dehumidifiers produce continuous condensate during operation, requiring either gravity drain to a floor drain or a condensate pump to elevate to a higher drain point — the Ebac WM and PD series include integrated pumps for installations without floor drains. Electrical service: residential ducted units run on 110V single-phase, while commercial K100E, CD200, AD850E, and Freestar units require 220V or 220V three-phase service depending on capacity. Confirm electrical service availability with the building's HVAC contractor before final specification. Most Ebac HVAC units are designed for installation by a licensed HVAC professional rather than DIY operator.