Welcome to the South Mini Splits collection for Humidity Control Systems. We feature high-efficiency systems from industry leaders like Cooper & Hunter, OLMO, MRCOOL, and Bravo.
These essential, health-focused, and versatile units are the ideal solution for protecting your home from excess moisture, preventing mold, or cooling dry climates naturally.
💡Why Choose South Mini Splits for Your Humidity Control Systems?
✅ Wholesale Pricing: Competitive rates on top-tier HVAC equipment.
✅ USA-Based Support: Expert help from sizing to post-install troubleshooting.
✅ Free Shipping Over $300: Get your complete system delivered fast.
What are Humidity Control Systems?
Humidity control is critical for comfort, health, and home preservation. The ideal indoor relative humidity (RH) should be maintained between 40% and 60%. We offer two primary solutions:
- Dehumidifiers: These units remove excess moisture from the air, which is crucial in humid climates (like the Southern US) or basements. Removing humidity makes the air feel cooler, allowing you to set your AC higher and save energy.
- Evaporative Coolers (Swamp Coolers): These units add moisture to the air through the process of evaporation, which creates a cooling effect. They are an energy-efficient solution for very hot and dry climates where adding humidity improves comfort.
The Impact of Humidity on Comfort & Efficiency
Controlling humidity is one of the most cost-effective ways to improve your home's climate control:
- The "Sensible" Load vs. "Latent" Load: Your AC system deals with two loads: sensible (temperature) and latent (humidity). Mini splits and central AC units are designed to remove some humidity, but if the humidity is too high, the system must run longer, wasting energy. A dedicated dehumidifier handles the latent load, allowing your AC to only handle the sensible load more efficiently.
- Health and Home Protection: High humidity above 60% creates an environment where mold, mildew, dust mites, and pests thrive. Controlling humidity protects wooden structures, minimizes musty odors, and improves air quality for allergy sufferers.
- Dehumidification for Off-Season Cooling: In spring and fall, when the temperature is mild but the air is sticky, running a dedicated dehumidifier can achieve satisfactory comfort without needing to turn on the main AC compressor.
Mini Split BTU Sizing & Application Guide
Use our quick reference chart to match your room size with the ideal system capacity.
| Capacity | Sq. Footage | Application |
|---|---|---|
| 6,000 BTU | 150–250 | Small bedrooms & offices |
| 9,000 BTU | 250–450 | Standard bedrooms |
| 12,000 BTU | 450–600 | Kitchens & studios |
| 18,000 BTU | 600–1,000 | Living rooms & garages |
| 24,000 BTU | 1,000–1,200 | Open floor plans |
| 36,000 BTU | 1,500–1,700 | Commercial & fitness |
| 48,000 BTU | 1,900–2,100 | Large warehouses |
| 60,000 BTU | 2,400–2,800+ | Commercial estates |
When to "Size Up"
If your ceilings are 10 feet or higher, you are cooling a larger volume of air. We recommend increasing your BTU choice by 20%.
For older homes or buildings with single-pane windows, opt for the next size up to ensure the unit can maintain the set temperature.
Appliances generate significant heat. If the unit is for a kitchen, add 4,000 BTUs to your square footage calculation.
Rooms with large south-facing windows or "sunrooms" act like greenhouses. Increase your BTU capacity by 10-15%
If the area regularly hosts more than two people (like a conference room or classroom), add 600 BTUs per additional person..
FAQs/Frequently Asked Questions
Q: Where is the best place to install a whole-house dehumidifier?
A: Whole-house dehumidifiers are typically installed in the ductwork or in the attic/basement, where they can effectively draw air from the entire home, treat it, and return dry air through the existing vents.
Q: Do mini splits and central AC units also control humidity?
A:Yes, they do. All air conditioners remove some humidity as part of the cooling process. However, during times of mild temperature or extremely high ambient humidity, a dedicated dehumidifier is often necessary to reach the ideal 40-60% RH range without overcooling the home.
Q: How do I know if I need a dehumidifier?
A: Key signs include condensation on windows or pipes, musty odors, visible mold spots, or the persistent feeling that your home is "sticky," even when the temperature is set low. An inexpensive hygrometer can also be used to measure your current indoor Relative Humidity (RH).
Q: Are dehumidifiers and evaporative coolers energy-efficient?
A: Compared to running a full AC compressor, yes. Evaporative coolers are extremely efficient as they only run a fan and water pump. Dehumidifiers use less energy than a central AC unit and often allow you to raise your AC setpoint by several degrees, resulting in overall energy savings.