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aciq|SKU:FJMA4X42L0CB

ACiQ 3.5 Ton Multi-Positional Air Handler with ECM Motor

3.5 Ton Air Handler Built for Off-Grid HVAC Reliability

42,000 BTU Cooling — Handles serious cooling loads for cabins and homesteads
5-Speed ECM Motor — Variable airflow with lower power consumption than PSC
Multi-Positional Install — Upflow, downflow, or horizontal — fits your layout
Factory TXV Installed — Precise refrigerant regulation right out of the box
Compact 21" Width — Fits tight spaces including manufactured housing installs
  • FREE System Design Consultation -- Our team sizes your HVAC-to-solar integration for actual loads
  • FREE Shipping -- Ships free on all orders, no minimum

$1,030.95

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ACiQ 3.5 Ton Multi-Positional Single Stage Air Handler
ACiQ 3.5 Ton Multi-Positional Single Stage Air Handler
$1,030.95

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In the box

  • ACiQ FJMA4X42L0CB Air Handler
  • Factory-installed TXV kit
  • Installation documentation
ACiQ 3.5 Ton Multi-Positional Single Stage Air Handler
ACiQ 3.5 Ton Multi-Positional Air Handler with ECM Motor
$1,030.95

3.5 Ton Air Handler Built for Off-Grid HVAC Reliability

The ACiQ FJMA4X42L0CB delivers 42,000 BTU of cooling through a multi-tap 5-speed ECM blower motor, giving you precise airflow control without the power draw of a standard PSC motor. Its fully insulated cabinet and factory-installed TXV kit make it a built-to-survive component for homesteads and cabins running on solar or generator power. Multi-positional mounting means it adapts to upflow, downflow, or horizontal configurations — field-tested flexibility for unconventional builds where space and layout don't follow standard rules.

FREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORT
5-Speed ECM Motor
Factory TXV Installed
Multi-Positional Mount
Fully Insulated Cabinet
42,000
Cooling BTU
1,400
Max CFM
166 lbs
Unit Weight
Stop Wasting Battery Capacity on Inefficient Airflow

Stop Wasting Battery Capacity on Inefficient Airflow

Most off-grid homesteaders don't realize that a standard PSC blower motor pulls significantly more watts than an ECM motor at the same CFM output. That wasted electricity comes straight from your battery bank — shortening your days of autonomy and forcing you to oversize your solar array. The ACiQ 3.5 Ton air handler's 5-speed ECM motor delivers up to 1,400 CFM at a fraction of the power draw. At Off Grid Vault, we only carry HVAC components we would install on our own cabins — every unit is pre-vetted for real-world efficiency so you don't pay the price for incompatible or wasteful equipment.

One Air Handler, Three Installation Orientations

One Air Handler, Three Installation Orientations

The 49 5/8" H x 21 1/8" W x 22 1/16" D cabinet fits upflow, downflow, or horizontal configurations — so you're not locked into a single layout. That flexibility matters when you're working with a cabin floor plan, a manufactured home, or a tight mechanical closet where standard units won't fit. The fully insulated cabinet keeps conditioned air where it belongs, and the compact 21-inch width opens up installation options that wider units simply can't match. Pair it with your AC-only condenser or heat pump — this handler works with both, so you're not forced into a specific condenser choice.

Factory TXV Means No Guesswork on Refrigerant Flow

Factory TXV Means No Guesswork on Refrigerant Flow

The factory-installed TXV handles precise R410A refrigerant metering without requiring field fabrication or additional parts. For off-grid setups where you may be coordinating installation across multiple systems, fewer loose ends means fewer failure points. The 3/8" liquid line and 7/8" suction line connections are standard, and optional electric backup heat kits up to 20 kW let you add resistance heating for winter conditions when solar production drops. Running on 208/230v single-phase with a 15-amp max breaker, this handler integrates cleanly into residential electrical panels without demanding a dedicated sub-panel.

Compatibility Check

Before ordering, verify these measurements and requirements against your mechanical room or closet layout.

  • Mechanical space allows 49 5/8" height available for upright installation
  • System uses R410A refrigerant with 3/8" liquid line connections
  • Filter rack accommodates standard 20" x 20" replacement filters

Where This Air Handler Belongs

Engineered for installations where standard equipment doesn't fit the plan.

Off-Grid Homestead HVAC
Remote Cabin Cooling
Manufactured Housing Retrofits
Heat Pump + AC Dual Systems

Full specifications

At a glance

Dimensions
49 5/8" H x 21 1/8" W x 22 1/16" D
Power
.5 HP
Warranty
See product page
Full specifications14 data points across 4 categories

Dimensions

Weight (in lbs)166.000000
Dimensions49 5/8" H x 21 1/8" W x 22 1/16" D
Filter Size20" x 20"
Liquid Line3/8"

Power & Performance

Cooling BTU42,000
Blower MotorECM 5-Speed Motor
Maximum CFM1400
Motor RPM1050
Horsepower.5 HP
Electric Backup Heat Capabilities (Optional)5 Kw, 8 Kw, 10 kw, 15 kw, 20 kw
ConfigurationMulti-Positional
RefrigerantR410A

Materials

CabinetSee product page

Compliance & Warranty

WarrantySee product page

The Off Grid Vault Promise

We vet every component so you don't have to gamble on your build.

Free ShippingShips free to your door — LTL freight included on large units, no surprise charges at checkout.
30-Day Performance GuaranteeIf it doesn't perform as specified, we make it right. Uninstalled returns accepted within 30 days in original packaging.
Authorized DealerWe sell genuine ACiQ equipment with full manufacturer warranty support handled directly through us.
★★★★★
“Swapped out my old PSC air handler for this ACiQ unit in my grid-independent cabin. The ECM motor is noticeably quieter and my battery bank isn't working nearly as hard during summer. Multi-positional install was a huge plus — I went horizontal in a low-ceiling crawlspace. Field-tested through two Arizona summers now and no complaints.”
F
First L.Prescott, AZ

3.5 Ton Multi-Positional Single Stage Air Handler

The ACiQ FJMA4X42L0CB air handler is engineered for optimal efficiency and performance, making it a smart choice for homeowners seeking both comfort and reliability. Featuring a 5-speed ECM blower motor, this model provides variable airflow capabilities, ensuring that your home maintains consistent temperatures while minimizing energy consumption. The factory-installed TXV kit further enhances its performance, allowing for precise refrigerant flow regulation to maintain optimal cooling efficiency. Whether you’re looking to cool your home during the hottest summer months or maintain a comfortable indoor environment year-round, this air handler is designed to deliver.

In addition to its advanced features, the ACiQ FJMA4X42L0CB excels in ease of installation and maintenance, making it a convenient solution for homeowners and HVAC professionals alike. Its durable construction and high-quality components ensure long-lasting reliability, while the factory-installed TXV kit eliminates the need for extra parts or modifications during setup. If you value superior quality, energy savings, and enhanced comfort, this air handler offers a comprehensive solution that meets and exceeds expectations, making it an excellent addition to any home HVAC system.


ACiQ 2.5 Ton Single Stage Air Handler

ACiQ 3.5 Ton Single Stage Air Handler Specs

  • Weight (in lbs): 166.000000
  • Dimensions: 49 5/8″ H x 21 1/8″ W x 22 1/16″ D
  • Cooling BTU: 42,000
  • Blower Motor: ECM 5-Speed Motor
  • Maximum CFM: 1400
  • Motor RPM: 1050
  • Horsepower: .5 HP
  • Electric Backup Heat Capabilities (Optional): 5 Kw, 8 Kw, 10 kw, 15 kw, 20 kw
  • Configuration: Multi-Positional
  • Refrigerant: R410A
  • Filter Size: 20″ x 20″
  • Liquid Line: 3/8″
  • Suction Line: 7/8″
  • Electrical: 208/230v 1 Phase 60 Hz
  • Max Breaker Size: 15 Amps
  • Min. Breaker Size: 5.3 Amps
  • Tonnage: 3.5 Ton
  • Connection: Sweat
  • Fuel Type: Electric


ACiQ 3.5 Ton Single Stage Air Handler Features

  • Multi-Tap 5-Speed ECM blower motor
  • Multi-positional – can be installed in the upflow, downflow, and horizontal configurations
  • Factory-installed TXV kit for enhanced energy optimization
  • Compatible with both AC-only and heat pump condensers
  • Sturdy, fully insulated cabinet
  • Compact size – can be installed in most manufactured housing applications


Your Satisfaction with ACiQ is Guaranteed:

  • Lowest Price Guaranteed
  • Limited 5 Year Warranty

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Frequently Asked Questions

Compare the ECM motor efficiency to PSC alternatives. Over a 10-year lifespan on battery power, the wattage savings compound. A motor that draws less from your battery bank means you can run a smaller, less expensive solar array. At Off Grid Vault, we frame this as total system cost — not just the handler price. Finance with Affirm from $86/month to spread the investment.
This handler is compatible with both AC-only and heat pump condensers running R410A refrigerant. The 3/8" liquid line and 7/8" suction line are standard sizes. If you need help confirming compatibility with your specific condenser model, take advantage of our free system design consultation — our team will verify the match before you purchase.
The air handler supports optional electric backup heat kits in 5 kW, 8 kW, 10 kW, 15 kW, and 20 kW capacities. Whether you need one depends on your climate and heating strategy. For off-grid setups in colder regions, a backup heat kit provides a safety net during low-solar winter days. Contact us for a free consultation and we'll help you determine the right configuration for your actual heating load.
The multi-positional design and factory-installed TXV kit streamline installation. Your HVAC technician won't need to fabricate or source a TXV separately. Exact install time depends on your configuration — upflow, downflow, or horizontal — and whether you're adding electric backup heat. We recommend having your installer review the specs before ordering. Free shipping is included on all orders.
Warranty terms are set by ACiQ and vary by component. As an authorized dealer, Off Grid Vault handles warranty claims directly — you're not routed through a generic ticket queue. Our 30-day performance guarantee covers uninstalled returns in original packaging. For post-installation issues, we process manufacturer warranty claims on your behalf. Contact us for the specific warranty documentation on this model.
This air handler requires 208/230v single-phase power and a 15-amp breaker. It cannot run directly from a 48V DC battery bank. You'll need an inverter that outputs 208/230v AC — which is standard for whole-home off-grid systems using split-phase hybrid inverters. If you're sizing an inverter for your HVAC load, our free system design consultation can help you spec the right inverter capacity.
SKU: FJMA4X42L0CB Category: Brand:

The Off Grid Vault Promise

We vet every component so you don't have to gamble on your build.

Free Shipping Ships free to your door — LTL freight included on large units, no surprise charges at checkout.
30-Day Performance Guarantee If it doesn't perform as specified, we make it right. Uninstalled returns accepted within 30 days in original packaging.
Authorized Dealer We sell genuine ACiQ equipment with full manufacturer warranty support handled directly through us.

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About aciq Air Handlers

aciq is a trusted manufacturer of premium air handlers. OffGridVault is an authorized dealer offering the full aciq lineup with free delivery, price match guarantee, and expert support.

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