3 ton - best for spaces between 1500 - 1800 sq ft depending on your home's insulation and your climate
SEER2 rating helps consumers compare energy efficiency when choosing a new air conditioner. Higher SEER2 ratings mean significant utility savings. The federal minimum is 14 SEER2 with ratings into the 20 SEER2 range. A 20 SEER2 uses half the energy of a 10 seer much like MPG ratings for vehicles.
If you have an indoor furnace, or air handler, along with an outdoor AC unit, this system will serve as a replacement for both.
MrCool Signature 3 Ton Central Air Conditioner System with Multi-Position Air Handler – 14.3 SEER2, R454B
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Air Conditioning Square Footage Range by Climate Zone
ZONE 1
ZONE 2
ZONE 3
ZONE 4
ZONE 5
1.5 Tons
600 - 900 sf
600 - 950 sf
600 - 1000 sf
700 - 1050 sf
700 - 1100 sf
2 Tons
901 - 1200 sf
951 - 1250 sf
1001 - 1300 sf
1051 - 1350 sf
1101 - 1400 sf
2.5 Tons
1201 - 1500 sf
1251 - 1550 sf
1301 - 1600 sf
1351 - 1600 sf
1401 - 1650 sf
3 Tons
1501 - 1800 sf
1501 - 1850 sf
1601 - 1900 sf
1601 - 2000 sf
1651 - 2100 sf
3.5 Tons
1801 - 2100 sf
1851 - 2150 sf
1901 - 2200 sf
2001 - 2250 sf
2101 - 2300 sf
4 Tons
2101 - 2400 sf
2151 - 2500 sf
2201 - 2600 sf
2251 - 2700 sf
2301 - 2700 sf
5 Tons
2401 - 3000 sf
2501 - 3100 sf
2601 - 3200 sf
2751 - 3300 sf
2701 - 3300 sf
3 ton - best for spaces between 1500 - 1800 sq ft depending on your home's insulation and your climate
SEER2 rating helps consumers compare energy efficiency when choosing a new air conditioner. Higher SEER2 ratings mean significant utility savings. The federal minimum is 14 SEER2 with ratings into the 20 SEER2 range. A 20 SEER2 uses half the energy of a 10 seer much like MPG ratings for vehicles.
If you have an indoor furnace, or air handler, along with an outdoor AC unit, this system will serve as a replacement for both.
MRCOOL 3 Ton AC Condenser – 14.3 SEER2 Signature Series Cooling-Only Air Conditioner (R-454B)
Powerful 33,000 BTU Cooling for Homes and Light Commercial Applications
The MRCOOL Signature Series 3 Ton air conditioner condenser is designed to deliver strong, energy-efficient cooling for larger homes and light commercial spaces. With 33,000 BTU of cooling capacity and up to 14.3 SEER2 efficiency, this system provides consistent comfort while helping reduce energy consumption.
This cooling-only condenser features a durable cabinet, quiet operation, and advanced system protection through built-in sensors. Its use of R-454B refrigerant ensures modern environmental compliance while maintaining reliable performance even during peak summer conditions.
Features & Benefits
3 Ton capacity with 33,000 BTU cooling performance
MRCOOL 3 Ton Multi-Position Air Handler – High-Efficiency Signature Series Indoor Unit
Powerful 36,000 BTU Airflow for Homes and Light Commercial Applications
The MRCOOL Signature Series 3 Ton air handler is designed for larger homes and light commercial applications, delivering strong airflow for 36,000 BTU systems. This unit ensures even temperature distribution and reliable comfort year-round.
Equipped with an energy-efficient ECM motor and durable coil design, this air handler enhances system performance while reducing energy consumption. Its multi-position flexibility allows for installation in a variety of spaces.
Features & Benefits
3 Ton capacity for 36,000 BTU systems
ECM motor for improved efficiency and airflow control
Multi-position installation flexibility
R-454B compatible design
Copper A-coil and aluminum fins
Quiet operation around 55 dB(A)
Compact cabinet for space-saving installation
Durable construction for long-term performance
Works with most thermostats and HVAC controls
10-year limited parts warranty
MRCOOL Electric Heat Kit for Multi-Position Air Handlers – 5kW, 7.5kW & 10kW Auxiliary Heat Options
Reliable Supplemental Heating for 1.5–5 Ton HVAC Systems in Cold Weather Conditions
The MRCOOL electric heat kit is designed to provide dependable supplemental heating for Signature Series multi-position air handlers. Available in 5kW, 7.5kW, and 10kW options, these heat strips enhance system performance by delivering additional warmth when outdoor temperatures drop and heat pump efficiency decreases.
Engineered for seamless integration, each heat kit installs directly inside compatible MRCOOL air handlers and operates automatically through the system’s heating controls. With built-in safety features and durable heating elements, these kits offer a reliable and efficient solution for maintaining indoor comfort in colder climates.
Features & Benefits
Available in 5kW, 7.5kW, and 10kW heating capacities
Designed for MRCOOL multi-position air handlers (1.5–5 ton systems / 18K–60K BTU)
Provides supplemental or backup heat for heat pump systems
Helps maintain indoor comfort during cold weather and extreme conditions
Installs directly inside the air handler cabinet for a clean, integrated setup
Built-in circuit breaker for safety and service disconnect
208/230V single-phase operation
Durable electric heating elements for long-term reliability
Automatic operation through system thermostat controls
Ideal for residential applications requiring auxiliary heat support
ACDirect does not yet provide installation services directly. However, most of our customers successfully arrange installation through local licensed HVAC contractors. These systems are designed for professional installation and typically include the components your installer will need.
Here’s how it works:
Hire a licensed HVAC technician in your area
Use platforms like Angi, Thumbtack, or a local HVAC directory to find reliable professionals
Confirm your installer is experienced with the system type you’re purchasing
Note:
Please be aware if you choose to install HVAC equipment yourself and don’t possess proper HVAC licensing, you will void the manufacturer’s factory warranty. If you are capable of a factory-compliant installation yourself, you will need a licensed HVAC contractor to sign off on your work, fully confirming factory-compliant workmanship.
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