Mars Hydro iFresh 4" Inline Fan Carbon Filter Kit | 205 CFM 26 dBA EC Motor

Precision Control in Any Space

Uncontrolled airflow is a silent yield killer. When ventilation equipment operates at fixed speeds with no feedback loop, temperature and humidity drift unchecked — vapor pressure deficit swings outside the optimal window, canopy microclimates develop, and the operator is left chasing conditions rather than managing them. Mismatched fan-and-filter assemblies compound the problem: undersized static pressure ratings allow backpressure to choke airflow, carbon media saturates unevenly, and the noise floor climbs high enough to signal mechanical stress before any alarm triggers. The cost is not a single catastrophic event — it is the slow, compounding erosion of environmental consistency across every cycle.

After deployment, the space operates differently. Airflow is dialed to the exact exchange rate the canopy demands, not the fixed maximum an AC motor can produce. The carbon filter pulls odor and particulates continuously, matched in diameter and static pressure capacity to the fan it ships with. Climate data feeds back into the control layer automatically when the MarsPro Add-On Pack is connected, and the operator monitors VPD, sets climate triggers, and adjusts fan speed remotely — without entering the space. The environment holds. The operator manages by exception, not by constant presence.

The mechanism behind that outcome is a PWM-controlled EC motor running at 3000±10% RPM, delivering 205 CFM against 347±10% Pa of static pressure — enough to overcome the resistance of a loaded carbon filter and ducting run without sacrificing the 26 dBA acoustic floor that keeps the system unobtrusive in dense configurations. Input power is 27 W±5% across a universal voltage range of 110–240 VAC at 50/60 Hz, drawing a maximum of 0.4 A. The IP44 rating protects internal components against particulate ingress and moisture exposure inherent to enclosed cultivation environments. The USB-based smart controller reduces cable clutter, and the expansion port allows the Standard Version to be upgraded to full app-based climate automation via the iFresh MarsPro Add-On Pack without replacing the fan unit. In practical terms, the Mars Hydro iFresh 4" Kit delivers 205 CFM at 26 dBA across a 4-inch ducted system at 27 W±5% with full PWM speed control and an upgrade path to automated VPD-responsive climate management.

Where This Belongs (and Doesn't)

Electrical and HVAC integration must be performed in accordance with applicable local codes. Cannafull Spectrum Solutions recommends consultation with a licensed electrician or mechanical contractor before installing forced-air ventilation systems in any facility subject to commercial building standards. This kit is rated for 110–240 VAC; verify supply voltage and circuit capacity before connection.

How It Works

The iFresh 4" system is built around a brushless EC (electronically commutated) motor operating at 3000±10% RPM. Unlike AC induction motors that run at a fixed speed determined by line frequency, the EC motor accepts PWM (pulse-width modulation) signals from the included speed controller, allowing stepless airflow adjustment from minimum to the 205 CFM rated maximum. This architecture eliminates the on/off cycling that creates temperature spikes in fixed-speed systems and extends motor service life relative to AC alternatives by reducing thermal and mechanical stress during partial-load operation.

Static pressure capacity is rated at 347±10% Pa — sufficient to maintain rated airflow through the included carbon filter and a standard ducting run without the fan hunting or surging under backpressure. The carbon filter uses Australian activated charcoal media in a refillable housing, allowing operators to replace media without replacing the filter body. The 26 dBA acoustic output at operating speed is a function of the EC motor's smooth torque curve and blade geometry, not acoustic dampening foam — meaning noise performance does not degrade as the filter loads.

The smart controller uses a USB-based connection architecture that reduces cable routing complexity in tight enclosures. The Standard Version ships with a physical speed controller; the expansion port on the fan housing accepts the iFresh MarsPro Add-On Pack (iConnect controller and temperature/humidity sensor, sold separately at $10.99 with 50% discount applied), which connects the unit to the MarsPro APP. Once connected, the app enables remote fan speed adjustment, on/off scheduling, loop timers, alarm thresholds, and climate triggers — including automated VPD-responsive airflow modulation based on live temperature and humidity sensor data. The Standard Version can be upgraded to this configuration at any time without replacing the fan unit. In practical terms, the Mars Hydro iFresh 4" Kit operates at 27 W±5%, draws a maximum of 0.4 A, and maintains 205 CFM airflow against 347±10% Pa static pressure across a universal 110–240 VAC supply with full PWM speed control and an app-upgrade path that requires no hardware swap on the fan itself.

Configuration Decoder

Two purchasing configurations are available for SKU MH-4IN-IFRESH. Both share identical fan hardware and technical specifications.

Note: APP-based climate control requires the Pro Version Add-On Pack (iConnect controller and temperature/humidity sensor). The Standard Version fan unit is hardware-compatible with the Add-On Pack and can be upgraded at any time without replacing the fan.

Commercial Assurance

• Motor Architecture: PWM-controlled EC motor — longer service life than AC motor alternatives, with stepless speed control from minimum to 205 CFM rated maximum.
• Acoustic Performance: 26 dBA operating noise floor — a function of motor torque curve and blade geometry, not foam dampening, meaning acoustic performance does not degrade as filter media loads.
• Ingress Protection: IP44 rated — protected against solid particulate ingress (4mm+) and water splash from any direction, appropriate for enclosed cultivation environments.
• Universal Voltage: 110–240 VAC, 50/60 Hz — compatible with U.S. standard and international supply voltages without a step-down transformer.
• Upgrade Path: Standard Version expansion port accepts the MarsPro Add-On Pack for full app-based climate automation without fan unit replacement.
• Warranty: Warranty period not specified in source data — contact Cannafull Spectrum Solutions or Mars Hydro directly for current warranty terms before purchase.

System Integration

• Duct Compatibility: 4-inch diameter — connects directly to standard 4-inch flexible or rigid ducting; steel hoops included for secure duct termination.
• Power Supply: 110–240 VAC, 50/60 Hz, 27 W±5%, 0.4 A maximum — compatible with standard U.S. 15A circuits with significant headroom for multi-unit installations on shared circuits.
• App Ecosystem: MarsPro APP (iOS/Android) — requires Pro Version Add-On Pack; enables multi-device monitoring, climate trigger automation, and remote scheduling from a single interface.
• Controller Interface: USB-based smart controller connection reduces cable routing complexity; physical speed controller included with Standard Version for immediate manual operation.
• Enclosure Integration: Ventilation mesh covers (x2) and grow tent corner brackets (x2) included — compatible with standard grow tent frame profiles for secure, tool-assisted installation.

Facility Integration Data

The following table models electrical load and procurement cost across multi-unit deployments of the Mars Hydro iFresh 4" Kit (Standard Version, $149.99 per unit) to support facility budgeting and circuit planning.

Power and current figures are nominal estimates based on rated specifications (27 W±5%, 0.4 A max per unit at 110 VAC). Actual draw will vary by operating speed and supply voltage. Circuit sizing must be performed by a licensed electrician per applicable NEC and local code requirements. Procurement cost based on Standard Version sale price of $149.99 per unit; volume pricing may be available — contact Cannafull Spectrum Solutions for fleet orders.

Operator Field Notes

• Filter Media Replacement: The carbon filter housing is refillable — replace Australian activated charcoal media when odor breakthrough is detected rather than replacing the entire filter body, reducing consumable cost per cycle.
• App Upgrade Sequence: Standard Version ships with physical speed controller and is immediately operational. Add the MarsPro Add-On Pack ($10.99) at any point to enable app-based climate automation, VPD monitoring, and alarm thresholds — no fan unit replacement required.
• Static Pressure Headroom: The 347±10% Pa rating provides adequate headroom for a loaded carbon filter plus a standard flexible ducting run. Operators adding duct bends or extending run length beyond manufacturer recommendations should verify static pressure budget before installation.
• Acoustic Baseline: The 26 dBA noise floor is measured at operating speed. Partial-speed PWM operation will produce lower acoustic output — useful in noise-sensitive multi-zone configurations where the fan runs at reduced CFM during lights-off periods.
• Operating Temperature Range: Rated for -20 to 60°C (-4 to 140°F) — the motor and electronics are rated for ambient conditions well outside typical cultivation space ranges, providing thermal margin in high-ambient environments.
• IP44 Scope: IP44 protects against particulate ingress (4mm+) and water splash. It does not provide protection against sustained water exposure, pressurized spray, or submersion — do not install in direct irrigation zones or overhead condensate drip paths.

Operator FAQ

Shipping & Logistics

• Shipping Territory: Cannafull Spectrum Solutions ships within the contiguous 48 United States only. Orders to Alaska, Hawaii, U.S. territories, and international destinations cannot be fulfilled through this listing.
• Lead Time: Standard processing and carrier transit times apply. Contact Cannafull Spectrum Solutions for current lead time estimates on single-unit and fleet orders before placing time-sensitive purchases.
• Returns: Returns are subject to the Cannafull Spectrum Solutions Return Policy. Defective units are handled separately from non-defective returns. Review full terms at cannafullspec.com/pages/return-policy before ordering.
• Restocking Fee: Returns of non-defective items are subject to a restocking fee of up to 25% per our Return Policy. Review full terms at cannafullspec.com/pages/return-policy before ordering.

For fleet orders, freight quotes, or pre-purchase technical questions: contact Cannafull Spectrum Solutions directly via cannafullspec.com.

What's in the Box

The following items are confirmed included with the Mars Hydro iFresh 4" Inline Fan Carbon Filter Kit (Standard Version) per manufacturer source data:

• 4-inch iFresh inline duct fan
• Carbon filter (refillable, Australian activated charcoal media)
• Duct (flexible)
• Steel hoops x3
• 5-gallon grow bags x4
• Grow net x1
• 6-inch clip fan x1
• 6-inch scissors x1
• Glasses x1
• Ventilation mesh covers x2
• Grow tent corner brackets x2

Note: The MarsPro Add-On Pack (iConnect controller and temperature/humidity sensor) is NOT included with the Standard Version. It is available separately as the Pro Version ($10.99). Package contents are as specified by the manufacturer; Cannafull Spectrum Solutions cannot guarantee inclusion of items not listed above. Verify contents upon receipt and report discrepancies within the return window specified in the Return Policy.

Regional Compliance & Deployment Notes

• Electrical Rating: 110–240 VAC, 50/60 Hz — compatible with U.S. standard 110/120 VAC single-phase supply. Maximum rated current is 0.4 A per unit at rated load.
• Ingress Protection: IP44 rated per IEC 60529 — suitable for enclosed cultivation environments with particulate and incidental moisture exposure. Not rated for outdoor installation, pressurized wash-down, or submersion.
• NEC Compliance: Circuit sizing, breaker selection, and wiring methods for multi-unit installations must comply with the National Electrical Code (NEC) and applicable state and local amendments. Cannafull Spectrum Solutions recommends a licensed electrician perform all facility-level electrical integration.
• State Cannabis Facility Requirements: Operators in licensed U.S. cannabis cultivation facilities should verify that ventilation equipment selections comply with state-specific facility design standards, odor control requirements, and inspection protocols applicable to their license type and jurisdiction.
• Shipping Jurisdiction: This product is available for shipment within the contiguous 48 United States only through Cannafull Spectrum Solutions. No shipments to Canadian provinces or international destinations.

Compliance information is provided for general reference only and does not constitute legal or engineering advice. Cannafull Spectrum Solutions makes no representation that this product meets the requirements of any specific state facility licensing standard. Operators are responsible for verifying compliance with all applicable federal, state, and local regulations governing cultivation facility equipment in their jurisdiction. Specifications subject to change by the manufacturer without notice; verify current specifications with Cannafull Spectrum Solutions before finalizing procurement decisions.