Summary of Reddit Comments on "4900 BTU Ducted Air Handler System"

Mitsubishi P Series vs. S Series

• P Series: Considered better spec-wise, built for longer run times, and tuned for better dehumidification.
• S Series: May not be available for rebates.

Mitsubishi P Series Air Handler

• Physically larger and built for commercial use.
• Installer mentioned it might be more durable due to more robust circuit boards.

General HVAC Advice

• Square footage alone is not enough to calculate heating and cooling needs; factors like insulation, windows, and building materials must be considered.
• Oversized equipment can lead to inefficiency and humidity issues.
• Getting a professional load calculation can save money on oversized equipment.
• Advice varies depending on location and construction quality.

Airwell Ducted Air Conditioning System

• Older unit may not be reverse cycle; need to check the mode options on the remote.
• Consider getting the unit serviced by a professional technician for proper operation.

Ventis Ducts

• Ventis Ducts were uninsulated and not meant to replace heating and cooling systems, but rather for fresh air and humidity control.

Small Ducted Split System for Plant Growing Area

• Suggests considering a Portable A/C unit instead of a ducted split system for better control and mobility in a tent for growing plants.

Insulation and Energy Efficiency

• Importance of energy efficiency, load calculations, and proper sizing to avoid overcooling/heating.

Overall, the choice between the Mitsubishi P Series and S Series depends on factors like rebates, durability, and dehumidification needs. Proper sizing, load calculations, and professional assessments are crucial for efficient HVAC systems, and considerations like insulation and windows impact heating and cooling requirements. For specific systems like the Airwell Ducted Air Conditioning System, servicing and understanding the unit's functions are recommended.