MBtek
APOLLO Central Air Handling Unit 6 Ton

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Air Handling Unit — Larger Residential / Light Commercial

APOLLO Central Air Handling Unit 6 Ton

Central ducted heating and cooling from hot or chilled water—without refrigerant lines inside the building.

Flow Direction
Downflow (Special Order)
$4,884
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Customer Success Stories

I installed the Apollo wall fan coil in our living room and I couldn't be happier. It's incredibly quiet—you barely notice it's running—yet it heats the space up super fast. Plus, the clean white design looks great on the wall.

Whisper-Quiet Comfort

A sleek, modern design that blends perfectly into any room.

Product details

  • Central heating and cooling
  • Water-based distribution
  • 24VAC thermostat compatible
  • Three application tiers

CENTRAL AIR HANDLING UNIT - 6 TON (APOLLO AHU)

High-performance hydronic air handling unit designed for larger central duct systems, delivering high-capacity heating, cooling, humidity control, and integrated comfort functions with quiet operation and seamless APOLLO heat pump integration.

Key Benefits

  • Larger hydronic AHU for bigger residential and light commercial ducted systems
  • 2400 CFM nominal airflow with 2.0 in. w.g. rated external static pressure
  • Expanded hydronic coil capacity up to 460,000 BTU for high-output heating and cooling
  • Integrated comfort functions for heating, cooling, humidification, dehumidification, backup heating, and evaporative cooling
  • High-efficiency fan motor with variable speed drive for precise duct balancing
  • Designed for use with APOLLO air-to-water heat pump systems and smart thermostat control

Specifications

  • Capacity: 6 Ton
  • System Type: Hydronic air handling unit
  • Application: Larger residential and light commercial ducted systems
  • Nominal Airflow: 2400 CFM
  • Hydronic Coil: 20 in. x 32 in. x 6 in., up to 460,000 BTU
  • Recommended Flow Rate: Minimum 21.2 GPM
  • Filter Size: 20 in. x 24 in. x 2 in., 2-pack MERV 8 pleated
  • Connections: 1 in. FPT female pipe thread
  • Power Supply: 220V, 60 Hz
  • Breaker Requirement: 60A
  • Flow Direction: Upflow standard, downflow and sideflow special order
Application
Larger residential and light commercial ducted systems
Nominal airflow
2,400 CFM at 2.0 in. w.g.
Hydronic coil
20 × 32 × 6 in, up to 460,000 BTU
Recommended flow
21.2 GPM minimum
Fan motor
High-efficiency variable-speed drive
Filter
20 × 24 × 2 in MERV 8 pleated, 2-pack
Connections / power
1 in FPT / 220V, 60Hz, 60A breaker
Flow direction
Upflow standard; downflow/sideflow special order
Functions
Heat, cool, humidify, dehumidify, backup heat, evaporative cooling

Answers

Frequently asked questions

What size APOLLO air handling unit do I need — 3.5, 6, or 25 Ton?

The 3.5 Ton (1,400 CFM) suits most residential and light commercial ducted systems. The 6 Ton (2,400 CFM) serves larger homes and light commercial spaces. The 25 Ton is for large commercial buildings. Confirm every choice with a load calculation.

What are the airflow and coil capacities of each model?

The 3.5 Ton delivers 1,400 CFM with a 22 × 22 × 5 in coil rated up to 193,600 BTU. The 6 Ton delivers 2,400 CFM at 2.0 in. w.g. with a 20 × 32 × 6 in coil rated up to 460,000 BTU. Actual output depends on entering water temperature.

What electrical supply and breaker does each model need?

The 3.5 Ton and 6 Ton use 220V / 60Hz power. The 3.5 Ton requires a 15A breaker and the 6 Ton a 60A breaker. Confirm wiring and breaker sizing against the current manual and local code.

What are the water connection and flow-rate requirements?

The 3.5 Ton and 6 Ton use 1 in FPT supply and return connections. Recommended minimum flow is 17.6 GPM for 3.5 Ton and 21.2 GPM for 6 Ton. Install shutoffs and air venting and insulate cooling supply piping.

Is the APOLLO AHU compatible with an air-to-water heat pump?

Yes. Every APOLLO Central AHU is hydronic and designed around the APOLLO Air to Water Heat Pump, using hot or chilled water at its coil to condition ducted air.

What thermostat and controls does the AHU use?

The line supports smart thermostat control and pairs with the APOLLO 24VAC FCU thermostat. It manages heating/cooling changeover and fan operation from heat-pump water temperature and zone demand.

Which functions does each model provide?

All three heat and cool. The 6 Ton and 25 Ton additionally publish humidification, dehumidification, backup heating, and evaporative cooling. The 3.5 Ton publishes heating and cooling only.

What is upflow vs downflow, and is sideflow available?

Upflow discharges at the top; downflow discharges at the bottom. The 3.5 Ton and 6 Ton ship upflow, with downflow and sideflow available by special order.

Can the AHU replace my existing central duct system?

Yes. The APOLLO Central AHU can reuse or modernize an existing duct network while replacing an indoor refrigerant circuit with hydronic heating and cooling.

What air filters does the AHU use and how do I maintain it?

The 3.5 Ton uses a 24 × 24 × 1 in MERV 8 pleated filter; the 6 Ton uses a 20 × 24 × 2 in MERV 8 pleated filter. Maintain filters, grilles, coil, condensate drain, and any evaporative-cooling components regularly.

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