Best Placement for Each Indoor Unit: Maximizing Comfort Across 5 Zones

📍 1. Why Placement Matters

Your MRCOOL system’s efficiency and comfort depend on airflow and zone balance.

Good placement ensures:

• Even temperature distribution

• Efficient heating/cooling cycles

• Reduced strain on compressors

• Better humidity control

Source: MRCOOL DIY Owner's Manual

⚖️ 2. General Placement Guidelines

Follow these universal MRCOOL guidelines:

• 7–8 ft above the floor is ideal

• Keep 6" minimum clearance from ceiling

• Maintain 3–5 ft of side clearance from walls or shelves

• Don’t face units directly into doorways

• Avoid obstacles: tall furniture, drapes, TVs

“If air can’t move freely, comfort suffers.”

Tip: Always mount units on exterior walls when possible to simplify line set routing.

🏠 3. Zone-by-Zone Planning

🏊 Bedroom (Zone 1)

• Place unit opposite or adjacent to the bed, not directly over it

• Avoid blowing cold air at head level

• Install near a closet wall to minimize disruption

🎮 Living Room (Zone 2)

• Mount above or across from main seating area

• Avoid facing TVs (cold air disrupts electronics)

• Mount away from fireplaces or windows

💼 Office (Zone 3)

• Keep air from blowing directly on the desk

• Mount near an entry wall if possible for better coverage

• Close to outlet and Wi-Fi router for MRCOOL Smart Kit

☕ Kitchen Nook (Zone 4)

• Avoid directly above stovetop or refrigerator

• Mount near dining area for focused comfort

• Keep clear of greasy air or high humidity spots

🏡 Guest Room (Zone 5)

• Use same principles as master bedroom

• Mount for universal comfort regardless of sleeping layout

• Install remote holder near the door

External Source: Cielo Wigle Room-by-Room Mini Split Guide

🌪️ 4. Height, Clearance & Airflow Rules

Feature	Minimum Clearance
Ceiling to top of unit	6 inches
Side of unit to wall	3–4 inches
Bottom of unit to floor	7 feet
Front air throw zone	6+ feet clear

Do NOT:

• Block air throw with large wall art or shelves

• Allow cold air to bounce off a nearby wall

Source: MRCOOL Installation Manual

🛋️ 5. Line Set Routing & Outdoor Unit Planning

MRCOOL’s Quick Connect line sets allow flexible routing, but Tony should:

• Mount indoor units close to exterior walls

• Keep line set runs under 75 ft per zone

• Limit total lift/drop to 25 ft vertical

• Bundle and conceal line sets using covers or sleeves

Best practice: All lines run toward one condenser pad location (minimize bends)

Resource: MRCOOL Line Set Length Guide

❌ 6. Avoiding Common Mistakes

1. Mounting over a doorway

2. Installing too close to ceiling – traps heat above

3. Cross-zone interference – overlapping airflow from adjacent rooms

4. Mounting on unstable drywall (especially corners)

5. Long or kinked line sets adding refrigerant strain

Check Studs: Always anchor brackets into at least one stud with toggle bolts for safety.

🪜 7. Tony's Smart Layout Strategy

For a typical 2,000–2,400 sq ft home with 5 zones:

Zone	Room	Placement Tip
Zone 1	Master Bed	Opposite bed, near closet corner
Zone 2	Living Room	Across seating area, away from TV
Zone 3	Home Office	Beside window, not behind desk
Zone 4	Kitchen Nook	Above side entry or pantry wall
Zone 5	Guest Room	Center of longest wall, remote within reach

Line Set Routing:

• Plan all units to slope gently down toward the outdoor unit

• Mount outdoor condenser on side yard pad with shade, 3 ft clearance

👍 8. Final Thoughts

Placement isn’t just cosmetic — it’s mission-critical for comfort and energy performance.

Tony’s takeaways:

• Respect air throw zones and clearance rules

• Mount on exterior walls where possible

• Think about how the space is actually used

• Route line sets cleanly and protect them from sun & pests

Smart placement = smoother operation, better comfort, and longer system life.