Small Modular Cabin Construction: HVAC

Small Modular Cabin Construction: HVAC

The HVAC Plan includes the mini-split heat pump head units (the inside part) and the condenser (the outside part). Plus it includes the bathroom exhaust fan, range hood vent and dryer vent.

Click to open bigger
Details Below
Samsung Quantum Wall Mounted Heat Pump with Wi-Fi above kitchen cabinets

Mini-split Heat Pump

The cabin has two Samsung Quantum Wall Mounted Heat Pump units with Wi-Fi supported by one condensing unit.

  • Living Room AR09TSFYBWKNCV 9,000/11,000 Capacity
  • Bedroom AR07TSFYBWKNCV 7,000/7,500 Capacity
  • Condenser AJ024TXJ3CH/AA 22,000/29,600 Capacity
Living Room/Kitchen HVAC Plan

WME stands for  Wall Mounted Evaporator. We put it in the optional location in the kitchen, instead of at the end of the cabin in the living room.

This mini-split has a cooling capacity of 9,000 and heating capacity of 11,000. That means it is appropriate for a room 250 to 450 square feet. One chart says in a well insulated house it can heat or cool up to 1000 square feet, which is bigger than the whole house.

Wiring to Heat Pump

The outdoor compressor heats or cool the air. Then it sends the air to these indoor units. You can see the lines in the construction photo.

Samsung Mini-split Air Conditioner Installation

This is one of the pictures from the installation guide.

Beginning Wired for Ceiling Fan
Wires for HVAC and Everything Else

All of the wires and coils and things run through the very center of the cabin ceiling.

Bedroom HVAC Plan

The bedroom gets one mini-split. It has a cooling capacity of 7,000 and heating capacity of 7,500. That means it is appropriate for a room 250 to 300 square feet. Even with the high ceiling, this is more then adequate for a 14×12 bedroom.

Samsung Condenser Heat Pump Condensing Unit

The condenser is mounted on the back of the cabin, off the bedroom.

Samsung FJM Heat Pump Condensing Unit

This multi-zone residential and light commercial system offers three different indoor units to choose from and multiple control options. With minimal installation space, it’s a flexible option for homes or offices with many rooms.

Free Joint Multi (FJM) unit supports 2 to 5 indoor units for multi-zone control with one outdoor unit.

Wires to Heat Pump Condensing Unit

This is all of the wires and things during construction.

Samsung Condenser Heat Pump Condensing Unit

This is the heat pump condenser on the finished cabin.

Combination Exhaust Fan/Light
Wet Location Light over Shower

Bathroom Exhaust Fan

The bathroom fan is part of the HVAC plan.

Combination Exhaust Fan/Light

It gets a 4″ vent pipe.

Duct from the Bathroom

Here’s the duct coming from the bathroom. The porch will end before this.

Microwave and Range Hood

Range Hood Vent

The plan includes a vent for the microwave. It says that it is not required, though.

Kitchen plan with vent for microwave range hood

This is the plan, but the vent is optional and I didn’t see it coming out of the side of the cabin.

Dryer Duct

Dryer Vent

The dryer duct goes straight out. That’s one of the reasons we changed the plan, so the duct didn’t have to

Dryer Duct

This is the dryer duct during construction.

The cabin is from Westwood Cabins. You can see more photos and floor plans at and