u/Dry-Friendship9718

I am installing a 10x14 Tuff Shed in Portland, Oregon, to use as a year-round home gym. To handle our heavy rain and moisture, the build will include:

• Exterior: LP radiant barrier roof/wall sheathing and Tyvek house wrap (installed by Tuff Shed).
• Ventilation & Framing: Roof baffles running to a ridge vent, with a 3/4" air gap maintained in the wall cavities.
• Insulation & Finish: Rigid foam board in the rafters and walls (sealed with spray foam), finished with drywall on the ceiling and walls.

The Dilemma:

Because this gym will house high-end electronics (Peloton Bike and Tread+), maintaining a consistent temperature and controlling humidity is critical to prevent equipment damage. I typically work out early in the morning, so heating is my primary concern, though cooling is still a nice-to-have.

With project costs escalating, I need to balance budget against equipment safety.

My Question:

Should I invest in a DIY mini-split (like a MrCool unit) or go with a more affordable through-the-wall heat/cool unit? Given Portland's damp winters and my specific need to protect fitness electronics without breaking the bank, what is the best recommendation?

I am installing a 10x14 Tuff Shed in Portland, Oregon, to use as a year-round home gym. To handle our heavy rain and moisture, the build will include:

• Exterior: LP radiant barrier roof/wall sheathing and Tyvek house wrap (installed by Tuff Shed).
• Ventilation & Framing: Roof baffles running to a ridge vent, with a 3/4" air gap maintained in the wall cavities.
• Insulation & Finish: Rigid foam board in the rafters and walls (sealed with spray foam), finished with drywall on the ceiling and walls.

The Dilemma:

Because this gym will house high-end electronics (Peloton Bike and Tread+), maintaining a consistent temperature and controlling humidity is critical to prevent equipment damage. I typically work out early in the morning, so heating is my primary concern, though cooling is still a nice-to-have.

With project costs escalating, I need to balance budget against equipment safety.

My Question:

Should I invest in a DIY mini-split (like a MrCool unit) or go with a more affordable through-the-wall heat/cool unit? Given Portland's damp winters and my specific need to protect fitness electronics without breaking the bank, what is the best recommendation?