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.
- Heat pumps are all electric and good for mild and cold climates.
- If you have an indoor furnace, or air handler, along with an outdoor AC unit, this system will serve as a replacement for both.
ACiQ 3.5 Ton Heat Pump AC System | 15 SEER2 AC | 21" Wide Variable Speed Multi-Positional Modular Air Handler | R454B
- Condenser: R5H5S42AKAAA
- Air Handler: FTMA5B48L0CA
- Heating Element: Select An Optional Heat Kit
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.
- Heat pumps are all electric and good for mild and cold climates.
- If you have an indoor furnace, or air handler, along with an outdoor AC unit, this system will serve as a replacement for both.
Free Shipping
Over $1500
DELIVERY TIME 5-10 BUSINESS DAYS
EXCLUDING WEEKENDS AND HOLIDAYS
ProfessionalU.S. Support
GUARANTEED LOWEST PRICES
FREE
SHIPPING
OVER $1500
DELIVERY TIME
5 - 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 $2500 get a
7 night luxury resort stay
ACiQ 3.5 Ton Heat Pump Air Conditioning Condenser | 14.3 SEER2 | R454B
Model Number
R5H5S42AKAAA
Dimensions
31-3/16" W x 31-3/16" D x 31-11/16" H
Documents
Warranty
Parts: 10 years
ACiQ 4 Ton Air Handler | 21" Wide Variable Speed Multi-Positional Modulating | R454B
Model Number
FTMA5B48L0CA
Dimensions
21-1/8" W x 22-1/16" D x 53-7/16" H
Documents
Warranty
Parts: 10 years
Heating Element
Heat Options
7kW | 10kW | 15kW | 20kW
AHRI Number
216634663
3.5 Ton ACiQ R5H5S42AKAAA Heat Pump – R454B Overview
For homes that need a bit more cooling and heating capacity, the 3.5-ton R5H5S42AKAAA delivers. It’s built to handle larger square footage while maintaining energy efficiency and quiet operation.
Why Choose This Unit?
- Refrigerant: Uses eco-friendly R454B refrigerant with low global warming potential.
- Efficiency Ratings: Up to 16.0 SEER2, 12.5 EER2, and 7.8 HSPF2 depending on system pairing.
- Compressor: Reliable scroll compressor with internal protection features.
- Quiet Operation: Sound levels as low as 70 dBA for peaceful performance.
- Durability: Built with solid sheet metal construction and a dense wire coil guard.
- Long-Line Ready: Supports refrigerant line lengths up to 250 feet with accessories.
- Low Ambient Cooling: Operates in outdoor temps as low as 0°F with optional kits.
- Warranty: 10-year parts limited warranty with registration (5 years if unregistered).
- Installation Flexibility: Compatible with programmable or standard thermostats.
- Pre-Charged: Factory-charged for a 15-foot line set to simplify installation.
FTMA5B48L0CA – 4 Ton Air Handler (R454B) Overview
The FTMA5B48L0CA is a 4-ton variable-speed air handler built for larger homes needing powerful, efficient airflow and advanced humidity control. With a corrosion-resistant aluminum coil, factory-installed TXV, and a fully insulated cabinet, this model is designed for long-term performance and quiet operation. It’s compatible with two-stage outdoor units and supports electric heat kits up to 20kW.
Key Features & Benefits:
- 4 Ton Capacity – Ideal for larger homes or high-demand zones
- Variable-Speed ECM Motor – Maintains even temperatures and reduces energy use
- Modular Cabinet – Easier to maneuver and install in tight spaces
- All-Aluminum Coil – Durable and corrosion-resistant
- Sloped Drain Pan – Helps prevent mold and bacteria buildup
- Multi-Positional Installation – Flexible for any layout
- R454B Refrigerant – Lower GWP for eco-conscious homeowners
- 10-Year Parts Warranty + 5-Year No Hassle Replacement
ACiQ EHC Series Heat Kits with Circuit Breakers for FTMA5 Air Handlers
Add dependable electric heating to your FTMA5 air handler with ACiQ’s EHC Series Heat Kits (CKB models). These kits are engineered for seamless compatibility with FTMA5 units using R454B refrigerant, offering safe and efficient heating performance across 2 to 5-ton systems. With built-in circuit breakers, these kits simplify installation and enhance protection, making them ideal for residential applications.
Whether you're upgrading an existing system or installing new, ACiQ heat kits deliver consistent warmth and peace of mind. Available in sizes from 5kW to 20kW, they meet a wide range of heating needs while maintaining airflow and system integrity. Designed for plug-and-play installation, these kits are a smart choice for homeowners and HVAC professionals alike.
Features & Benefits
- Built-in Circuit Breakers – Enhanced safety and simplified electrical setup.
- Wide Compatibility – Designed for FTMA5 air handlers from 2 to 5 tons.
- Flexible Sizing – Choose from 5kW, 8kW, 10kW, 15kW, or 20kW models.
- Easy Installation – Plug-in ready with minimal wiring hassle.
- Reliable Heating – Consistent performance in all-electric or hybrid systems.
- Smart Design – Maintains airflow and static pressure for optimal comfort.
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
