-
MRCOOL
SKU: MCAESAS4T4221AA
Signature 42K BTU 3.5 Ton AC Condenser ONLY | Signature Series Air... | HVACProSales
$2,067.70
Central Split Air Conditioners
(Showing 1 of 1)HVAC SYSTEMS
Central Split Air Conditioners
We help HVAC contractors, facility managers, and procurement teams source central split air conditioning systems and components. Availability may vary by supplier, stock status, manufacturer policy, and product type.
What This Category Includes
Central split air conditioners are the most widely installed cooling systems in residential and light commercial buildings. This category covers split system condensing units, air handlers, evaporator coils, and matched system components.
ⓘ We do not claim authorized dealer or factory-direct status. For system sizing, refrigerant type verification, or OEM part compatibility, submit your equipment model number and serial number.
Split System Condensing Units
Outdoor units containing the compressor, condenser coil, and fan. Available in single-stage, two-stage, and variable-speed configurations.
Air Handlers & Evaporator Coils
Indoor units for air distribution. Air handlers include a blower; evaporator coils are used with existing furnace air handlers.
Matched System Packages
AHRI-certified matched indoor/outdoor system combinations for rated efficiency and warranty compliance.
Packaged Units
Self-contained units housing all components in a single cabinet for rooftop or slab installation.
System Selection Guide
| Factor | Consideration | Notes |
|---|---|---|
| Cooling Capacity | Sized by Manual J load calculation | 1 ton = 12,000 BTU/hr |
| SEER2 Rating | Minimum 14.3 SEER2 (North); 15.2 SEER2 (South) per 2023 DOE standards | Higher SEER2 = lower operating cost |
| Refrigerant Type | R-410A (current); R-32 / R-454B (transitional) | Verify before ordering parts |
| Single-Stage vs. Variable-Speed | Variable-speed compressors offer better dehumidification and efficiency | Higher upfront cost |
| Voltage | 208/230V single-phase (residential); 208/230V or 460V three-phase (commercial) | Verify supply voltage before ordering |
Frequently Asked Questions
Q: What is a central split air conditioner?
A central split air conditioning system consists of an outdoor condensing unit and an indoor air handler or coil connected by refrigerant line sets. The outdoor unit houses the compressor and condenser coil; the indoor unit circulates conditioned air through ductwork. Split systems are the most common central cooling configuration for residential and light commercial buildings.
Q: What size central AC system do I need?
System sizing is based on the building's cooling load, calculated using Manual J load calculation methodology. Factors include square footage, insulation levels, window area, climate zone, and occupancy. Oversized systems short-cycle and fail to dehumidify properly; undersized systems cannot maintain setpoint on design days. Contact us for sourcing support once your load calculation is complete.
Q: What refrigerant do modern central AC systems use?
Most current central split systems use R-410A refrigerant. Newer systems are transitioning to lower-GWP refrigerants including R-32 and R-454B as manufacturers phase out R-410A under EPA regulations. Verify the refrigerant type before ordering replacement parts or refrigerant.
Q: Can I mix indoor and outdoor units from different manufacturers?
Mixing indoor and outdoor units from different manufacturers (mismatched systems) is generally not recommended and may void equipment warranties. AHRI-matched systems are required for rated efficiency and warranty compliance. Contact us with your equipment details for sourcing guidance.
Need Help Sourcing a Central AC System?
Submit your system capacity, refrigerant type, voltage, and application details for sourcing support.
Contact Procurement Support