America's Leading Discount HVAC Supplier Since 2001 ...
and now, NASCAR Racing Sponsor
Ask an Expert
866 862 8922
Hours of Operation 8am - 8pm EST
11am - 8pm EST
- 3.5 ton - best for spaces between 1700- 2100 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.
- Good for extreme southern climates with very low heating demand such as south Florida and south Texas (otherwise a heat pump is the best option)
- 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 3.5 Ton Central Air Conditioner System with Multi-Position Air Handler and Electric Heat – 14.3 SEER2, R454B
- Condenser: MCAESAS4T4221AA
- Air Handler: MCAEAMPEF42C21AA
- Heating Element: Select A Heat Kit Option
AC Size Calculator | Get BTU’s and Tonnage – Free and Easy!
Welcome! START HERE:
Use the sizing calculator below to calculate your required system size.
Follow these easy steps:
- 3.5 ton - best for spaces between 1700- 2100 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.
- Good for extreme southern climates with very low heating demand such as south Florida and south Texas (otherwise a heat pump is the best option)
- If you have an indoor furnace, or air handler, along with an outdoor AC unit, this system will serve as a replacement for both.
As low as $3,653.00
Free Shipping
Over $1500
*Excludes Commercial Products
DELIVERY TIME 3-10 BUSINESS DAYS
EXCLUDING WEEKENDS AND HOLIDAYS
ProfessionalU.S. Support
GUARANTEED LOWEST PRICES
FREE
SHIPPING
OVER $1500
*Excludes Commercial Products
DELIVERY TIME
3 - 10 BUSINESS DAYS
EXCLUDING WEEKENDS AND HOLIDAYS
PROFESSIONAL
U.S. SUPPORT
ADD TO CART FOR
GUARANTEED LOWEST PRICES
0% Interest
Orders $3000+ offered at checkout
No Credit Needed
Bad credit/no credit is OK - offered at checkout
Orders over $3000 get a
7 night luxury resort stay
MrCool Signature 3.5 Ton Central Air Conditioning Condenser – 14.3 SEER2, R454B
Model Number
MCAESAS4T4221AA
Dimensions
29.14" W x 29.14" D x 32.875" H
Documents
MCAESAS4T4221AA Specifications
Warranty
10 Year Parts, Limited Lifetime Compressor
MrCool Signature 3.5 Ton Air Handler – Multi-Position, R454B
Model Number
MCAEAMPEF42C21AA
Dimensions
19.625" W x 22" D x 45.75" H
Documents
MCAEAMPEF42C21AA Specifications
Warranty
10 Year Parts, Limited Lifetime Compressor
Heat Kit Options
AHRI Number
217513221
MRCOOL 3.5 Ton Air Conditioner Condenser – 14.3 SEER2 Signature Series Cooling-Only System
High-Performance 39,000 BTU Cooling for Larger Residential Spaces
The MRCOOL Signature Series 3.5 Ton air conditioner condenser delivers powerful and efficient cooling for larger homes and demanding applications. With 39,000 BTU of cooling capacity and up to 14.3 SEER2 efficiency, this unit is designed to keep indoor spaces comfortable even during peak summer heat.
Built with a durable steel cabinet and protective coil guard, this condenser is designed for long-term reliability. Its quiet operation and compact footprint make it a practical choice for homeowners, while the R-454B refrigerant ensures compliance with modern environmental standards.
Features & Benefits
- 3.5 Ton capacity with 39,000 BTU cooling performance
- Up to 14.3 SEER2 efficiency for energy savings
- Cooling-only condenser ideal for AC-focused installations
- R-454B refrigerant with low environmental impact
- Quiet operation around 65 dB(A)
- Durable steel cabinet with louvered coil protection
- Compact footprint for easier installation
- Built-in temperature and pressure sensors for system protection
- 208/230V single-phase compatibility
- 10-year parts limited warranty and lifetime compressor coverage
MRCOOL 3.5 Ton Multi-Position Air Handler – Signature Series High-Performance Indoor Unit
Enhanced 42,000 BTU Airflow for Larger Residential Comfort Systems
The MRCOOL Signature Series 3.5 Ton air handler provides enhanced airflow performance for larger homes requiring 42,000 BTU capacity. Designed for efficiency and durability, this unit helps maintain consistent indoor comfort across all seasons.
Its ECM motor and multi-position capability allow for flexible installation and improved system performance. Built with high-quality materials, this air handler is engineered for long-term reliability and efficient operation.
Features & Benefits
- 3.5 Ton capacity for 42,000 BTU systems
- Energy-efficient ECM blower motor
- Multi-position installation (upflow, downflow, horizontal)
- R-454B compatible system design
- Copper A-coil with aluminum fins
- Quiet operation around 54 dB(A)
- Durable cabinet construction
- Compact footprint for installation flexibility
- Third-party thermostat compatibility
- 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
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
Who installs the AC unit after I purchase it?
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.
Need help? Contact Our Experts
(866)-862-8922
Hours:
Monday - Friday: 8am to 9pm EST
Saturday: 8am to 8pm EST
Sunday: 11am to 8pm EST
