Small Modular Cabin Construction: HVAC
![Small Modular Cabin Construction: HVAC](https://i0.wp.com/www.projectsmallhouse.com/blog/wp-content/uploads/2024/01/featured-construction.jpg?fit=810%2C431&ssl=1)
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.
![](https://i0.wp.com/www.projectsmallhouse.com/blog/wp-content/uploads/2024/01/hvac_plan.jpg?resize=500%2C203&ssl=1)
HVAC Plan
Details Below
![](https://i0.wp.com/www.projectsmallhouse.com/blog/wp-content/uploads/2024/01/heat_pump.jpg?resize=500%2C375&ssl=1)
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
![](https://i0.wp.com/www.projectsmallhouse.com/blog/wp-content/uploads/2024/01/hvac_LR.jpg?resize=500%2C375&ssl=1)
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.
![](https://i0.wp.com/www.projectsmallhouse.com/blog/wp-content/uploads/2024/01/HVAC-wiring.jpg?resize=500%2C500&ssl=1)
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.
![](https://i0.wp.com/www.projectsmallhouse.com/blog/wp-content/uploads/2024/01/hvac_samsung_diagram.jpg?resize=500%2C429&ssl=1)
This is one of the pictures from the installation guide.
![](https://i0.wp.com/www.projectsmallhouse.com/blog/wp-content/uploads/2024/01/electric-ceiling.jpg?resize=500%2C375&ssl=1)
Wires for HVAC and Everything Else
All of the wires and coils and things run through the very center of the cabin ceiling.
![](https://i0.wp.com/www.projectsmallhouse.com/blog/wp-content/uploads/2024/01/hvac_plan-bedroom.jpg?resize=456%2C472&ssl=1)
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.
![](https://i0.wp.com/www.projectsmallhouse.com/blog/wp-content/uploads/2024/01/back-cabin.jpg?resize=500%2C375&ssl=1)
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.
![](https://i0.wp.com/www.projectsmallhouse.com/blog/wp-content/uploads/2024/01/electric-hvac-b.jpg?resize=500%2C500&ssl=1)
This is all of the wires and things during construction.
![](https://i0.wp.com/www.projectsmallhouse.com/blog/wp-content/uploads/2024/01/electric-hvac-a.jpg?resize=500%2C375&ssl=1)
This is the heat pump condenser on the finished cabin.
![](https://i0.wp.com/www.projectsmallhouse.com/blog/wp-content/uploads/2024/01/bath_lighting.jpg?resize=500%2C500&ssl=1)
Wet Location Light over Shower
Bathroom Exhaust Fan
The bathroom fan is part of the HVAC plan.
![](https://i0.wp.com/www.projectsmallhouse.com/blog/wp-content/uploads/2024/01/fan-plan.jpg?resize=500%2C500&ssl=1)
It gets a 4″ vent pipe.
![](https://i0.wp.com/www.projectsmallhouse.com/blog/wp-content/uploads/2024/01/bath_duct.jpg?resize=500%2C375&ssl=1)
Here’s the duct coming from the bathroom. The porch will end before this.
![](https://i0.wp.com/www.projectsmallhouse.com/blog/wp-content/uploads/2024/01/vent_hood.jpg?resize=500%2C375&ssl=1)
Range Hood Vent
The plan includes a vent for the microwave. It says that it is not required, though.
![](https://i0.wp.com/www.projectsmallhouse.com/blog/wp-content/uploads/2024/01/vent-hood.jpg?resize=500%2C650&ssl=1)
This is the plan, but the vent is optional and I didn’t see it coming out of the side of the cabin.
![](https://i0.wp.com/www.projectsmallhouse.com/blog/wp-content/uploads/2024/01/dryer_duct-b.jpg?resize=500%2C375&ssl=1)
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
![](https://i0.wp.com/www.projectsmallhouse.com/blog/wp-content/uploads/2024/01/dryer_duct.jpg?resize=500%2C375&ssl=1)
This is the dryer duct during construction.
The cabin is from Westwood Cabins. You can see more photos and floor plans at www.westwoodcabins.com and www.facebook.com/westwoodcabins.