MODEL: EZPRO-12-HP-WMAH-115D-O

Effortless DIY Comfort for Spaces up to 550 sq. ft.

The MRCOOL® EasyPro™ 12k BTU 5th Generation Mini-Split Air Handler delivers affordable, ultra-efficient heating and cooling for small spaces—without the hassle or price tag of professional installation. Ideal for bedrooms, home offices, studios, or server rooms up to 550 sq. ft., this compact unit blends modern convenience with time-tested performance.

With DIY-friendly features like a pre-charged line set (sold separately), Wi-Fi connectivity, and the MRCOOL SmartHVAC® App, you’re in complete control of your comfort from your smartphone—or through voice commands with Amazon Alexa and Google Assistant.

Thanks to Active Clean Technology, the system maintains better indoor air quality by preventing dust and mildew build-up. The Follow Me® function ensures consistent temperature where you actually are—not just at the wall unit. With Gold Fin® anti-corrosion protection and ultra-quiet operation down to 17.5 dBA, this unit offers year-round comfort backed by a strong limited warranty.

Why You’ll Love It

Simple DIY Installation — No professional help needed. Quick Connect® technology makes setup a breeze.

✅ Powerful Comfort — 12,000 BTU capacity cools and heats rooms up to 550 sq. ft., keeping your space cozy year-round.

✅ Smart-Home Ready — Control your comfort from anywhere with Wi-Fi and the SmartHVAC app. Works seamlessly with Alexa & Google Assistant.

✅ Clean, Fresh Air — Active Clean Technology and washable filters keep your air pure and system efficient.

✅ Ultra-Quiet Operation — Runs as low as 17.5 dBA, so it’s perfect for peaceful bedrooms and focused workspaces.

✅ Built to Last — Gold Fin® Anti-Corrosion protection defends against salty air, making it ideal for coastal homes.

✅ Works in Cold Climates — Enjoy dependable cooling down to 5°F, great for garages, server rooms, or chilly nights.

✅ Eco-Friendly Refrigerant — Uses advanced R-454B refrigerant to protect the environment while delivering efficient performance.

✅ Peace of Mind Warranty — 1-year parts and 2-year compressor coverage to keep you covered.

Questions, answered

Everything homeowners ask before buying a MRCOOL® system.

Installation

Do I need an HVAC technician to install this?

No. MRCOOL® DIY systems are designed for homeowner installation. The pre-charged Quick Connect® line set means there's no refrigerant handling, no vacuum pump, and no special tools or license required.

How long does installation take?

Most single-zone systems go in within a few hours: mount the indoor air handler, set the outdoor condenser, connect the pre-charged line set, and power it on.

Do I need an electrician?

The system needs a dedicated circuit. Most homeowners have a licensed electrician add the breaker and disconnect — everything else you can do yourself.

Sizing & compatibility

What BTU size do I need?

As a rule of thumb: up to 400 sq ft → 9–12K BTU, 400–600 sq ft → 12–18K, 600–1,000 sq ft → 18–24K. Use the room-size guide above and factor in insulation, ceiling height and sun exposure.

Will it heat in winter?

Yes — these are heat pumps, so they heat and cool. Many MRCOOL® systems keep heating in sub-freezing temperatures; check each model's spec sheet for its low-temperature heating range.

115V or 230V — which do I need?

9K–12K units are usually 115V (standard outlet circuit); 18K and larger are typically 230V. The voltage is shown in the product options and specifications.

Warranty & support

What warranty is included?

MRCOOL® systems carry manufacturer warranty coverage — typically 5–10 years on major components when you register your system after installation.

How do I get help choosing or installing?

Email support@coolheatdirect.com — our U.S. team replies within one business day with sizing, voltage and compatibility help.

Shipping & returns

How fast does it ship?

Most products ship in 3–5 business days with free curbside delivery in the continental U.S. The freight carrier calls to schedule your delivery.

Can I return it?

Returns are accepted within 30 days on new, unopened items in original packaging. A restocking fee may apply to HVAC equipment — we always confirm before issuing a return authorization.

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