Part of this kit — included in the price above.

View full details →
MRCOOL Signature 3.5 Ton 42K BTU Split Air Conditioner Condenser, MCAESAS4T4221AA

MRCOOL Signature 3.5 Ton 42K BTU Split Air Conditioner Condenser, MCAESAS4T4221AA

MRCOOL| SKU: MCAESAS4T4221AA In Stock

$2,067.70$2,476.0016% off

Payment plans

From $172.30/mo with shop Pay View sample plans

$57.43/mo with Paytomorrow Learn More SAVE NOW:

Amounts shown are maximums; actual savings depend on income, household size, utility, and program rules. Some programs require installation by a licensed or participating contractor and/or specific equipment efficiency ratings. Rebate data by Rewiring America. Not tax or legal advice — verify with the program before purchase. Questions? Call us at (888) 231-8920.

Free Delivery Aug 1-8 (Est.)
Optional accessories

Add common accessories before checkout.

Add coverage
Add coverage

Choose optional coverage for your order.

Protection plan

Use your system worry-free for years to come

  • Comprehensive coverage for mechanical and electrical breakdowns, including power surges
  • Repairs covered 100% for the extended term — labor included, not just parts
  • Coverage for normal wear and tear that affects how the product works
  • Replacement or reimbursement if we can’t repair it
  • $0 deductibles, ever
  • Cancel anytime on a pro-rata basis
  • US-based support and quick claims filing
2 Year Protection Plan · $149Add two years of optional service contract coverage. 5 Year Protection Plan · $299Add five years of optional service contract coverage.

Coverage begins after the manufacturer warranty applies, and runs alongside it for items the factory doesn’t cover. Select a plan above the Add to Cart button to include it with your order.

Backed by Chill Mini Splits · (888) 231-8920Detailed terms and conditions

Product overview

Stay cool and comfortable all summer with the MRCOOL Signature Series 42k—powerful cooling designed to save energy and bring peace of mind.

❄️ Superior Cooling Power: Beat the heat with 42,000 BTUs of cooling, perfect for large rooms or whole-home comfort so you always stay refreshed.

🔇 Quiet, Reliable Operation: Enjoy a peaceful home with a sound-dampening design that runs at just 63 decibels, letting you cool off without the noise.

⚡ Easy & Efficient Installation: Comes pre-charged with eco-friendly refrigerant and features user-friendly service valves, making installation simple and hassle-free.

Upgrade your comfort today—trust MRCOOL for lasting performance, energy savings, and dependable warranty protection!

In-stock systems ship fast and free with curbside freight delivery, typically arriving in 4–10 days. Please inspect each box at delivery and note any damage on the receipt before signing — it keeps any freight claim quick and simple.

Ask AI

Ask AI about this product

Ask our AI product assistant about sizing, compatibility, electrical needs, accessories, shipping, warranty, and install planning.

Complete Your System

MRCOOL Signature 3.5 Ton 42K BTU Split Air Conditioner Condenser, MCAESAS4T4221AA
Electrical Kit
Outdoor condenser pad for mini split air conditioner
MRCOOL LineGuard 4.5" Complete Line Set Cover Kit - 12 ft
MRCOOL Condenser Wall Mounting Kit for 24K, 27K & 36K Mini Split Systems

Total Price: $2,067.70

This item: MRCOOL Signature 3.5 Ton 42K BTU Split Air Conditioner Condenser, MCAESAS4T4221AA $2,067.70