MRCOOL® Universal Series 2–3 Ton DC Inverter Heat Pump Condenser – Up to 20 SEER, Ultra-Quiet, 208-230V

MODEL: MDUO18024036

Advanced All-Electric Heating & Cooling for Year-Round Home Comfort

Step into the future of efficient, all-electric climate control with the MRCOOL® Universal Series 2–3 Ton DC Inverter Heat Pump Condenser. Designed to replace traditional HVAC systems, this ultra-high-efficiency unit delivers up to 20 SEER cooling and powerful heating—even in sub-zero temperatures down to -22°F.

Its sleek, compact design makes it ideal for zero-lot-line homes, strict noise-regulated areas, and rooftop or conventional installs. Featuring a whisper-quiet DC inverter rotary compressor and an energy-saving EEV metering device, it offers rapid heating/cooling with incredibly low operational sound levels of just 55 dB. Plus, it’s compatible with most third-party air handlers and smart thermostats (including Nest).

With no gas furnace required, the MRCOOL® Universal system gives homeowners a fully electric, eco-friendly option—delivering comfort, flexibility, and long-term savings.

Why You’ll Love It

✅ 2–3 Ton Capacity – Covers 24,000–36,000 BTU heating & cooling demand

✅ Up to 20 SEER Efficiency – For significant year-round utility savings

✅ -22°F Heating Capability – Engineered for extreme cold climates

✅ Energy Star & AHRI Certified – Trusted performance and verified ratings

✅ Universal Compatibility – Works with most thermostats and air handlers

✅ Ultra-Quiet Operation – Just 55 dB(A) for peaceful indoor comfort

✅ Slim Footprint – Ideal for tight spaces, rooftops, or noise-restricted zones

✅ DC Inverter Technology – Smooth, energy-efficient temperature control

✅ Pre-Charged with R-410A – Saves install time and complexity

✅ 10-Year Warranty – Registered limited coverage for added peace of mind

What’s Included:

• MRCOOL® Universal 2–3 Ton Inverter Heat Pump Condenser

• Pre-Charged with 148.8 oz R-410A Refrigerant

• Product Brochure

• Installation Manual

• AHRI Certificate
  

• Warranty Registration Info

Specifications

Specifications at a Glance

Attribute	Details
Voltage	208–230V / 1 Phase / 60 Hz
Cooling Capacity (BTU)	24,000
Heating Capacity (BTU)	24,000
SEER / SEER2	Up to 20 / 17
EER / EER2	12.5 / 12
HSPF / HSPF2	10.5 / 9
CFM	3000
Compressor Type	Inverter Rotary
Decibel Rating	55 dB(A)
Refrigerant Type	R-410A (Pre-Charged)
Operating Temp (Cool/Heat)	5°F–129.2°F (cool), -22°F–75.2°F (heat)
Line Set Size (Liquid/Suction)	3/8" / 3/4"
Max Line Set Length	164 ft
Energy Star Certified	Yes
AHRI Certified	Yes
ETL Certified	Yes
Warranty (Registered)	10-Year Limited Warranty

Room Size & BTU Coverage Guide (Universal Series)

BTU Rating	Tonnage	Recommended Room Size
18,000 BTU	1.5 Ton	600 – 900 sq. ft.
24,000 BTU	2 Ton	800 – 1,200 sq. ft.
36,000 BTU	3 Ton	1,200 – 1,500 sq. ft.
48,000 BTU	4 Ton	1,500 – 2,000 sq. ft.
60,000 BTU	5 Ton	2,000 – 2,500+ sq. ft. (open concept)

💡 Based on 8 ft ceilings, good insulation, and average sun exposure. Size up for rooms with high ceilings, large windows, or poor insulation.

Installation

Installation & Manuals 

Product Brochure

Installation Manual

Warranty Document

AHRI Certificate

Energy Certificate

Shipping & Returns

Shipping Policy 

At Cool Heat Direct, we offer free curbside delivery on all MRCOOL product orders via FedEx Ground, FedEx Freight, or trusted carriers depending on order size.

• Deliveries are made to the curbside — please arrange assistance for heavy or large items, as drivers do not carry items indoors or upstairs.

• Tracking details will be sent within 3–5 business days after placing your order.

• Freight shipments are scheduled directly by the carrier using the contact information you provide at checkout.

• Please inspect your shipment upon delivery and report any visible damage on the delivery receipt.

Return Policy 

We want you to love your purchase from Cool Heat Direct. If you need to return an item:

• Contact us within 30 days of delivery.

• Items must be unused, uninstalled, and in their original packaging.

• A 35% restocking fee applies to all approved returns.

• Accessories such as line sets, wall mounts, and couplers are non-returnable.

• Return shipping is the customer’s responsibility unless the item is damaged or defective on arrival.

To start a return, please email us at support@coolheatdirect.com with your order number and reason for return.