Description
MRCOOL Signature Series 18K BTU 1.5 Ton AC Condenser ONLY — MCAESAS4T1821AA
Reliable Cooling-Only Performance for Central Ducted Systems
The MRCOOL Signature Series 18K BTU 1.5 Ton Air Conditioner Condenser (MCAESAS4T1821AA) delivers dependable, energy-efficient cooling for residential and light commercial central ducted systems. Designed for cooling-only climates, this unit pairs with any compatible MRCOOL Signature Series multi-position or horizontal air handler to create a complete split-system AC installation. Factory pre-charged with R-454B refrigerant — the modern, low-GWP replacement for R-410A — this condenser meets current environmental standards while delivering consistent performance season after season.
With a 14.3 SEER2 efficiency rating, the Signature Series condenser reduces operating costs without sacrificing comfort. The single-speed scroll compressor provides proven reliability, quiet operation at just 60 dBA, and long service life. Inner-groove copper tubing enhances heat transfer for faster, more even cooling throughout your home.
Technical Specifications
| Specification | Value |
|---|---|
| Model / SKU | MCAESAS4T1821AA |
| Series | Signature Series Air Conditioner Condenser |
| Type | Condenser ONLY — Cooling Only (AC) |
| Cooling Capacity | 18,000 BTU |
| Tonnage | 1.5 Ton |
| SEER2 Rating | 14.3 |
| EER2 Rating | 11.7 |
| Refrigerant | R-454B (factory pre-charged) |
| Voltage | 208/230V |
| Max Breaker | 20A |
| Min Circuit Ampacity | 15A |
| Compressor Type | Single-Speed Scroll |
| Sound Rating | 60 dBA |
| Net Weight | 132 lbs (59.9 kg) |
| Certifications | AHRI, UL, CSA, ETL |
| Warranty | 10-Year Parts | Limited Lifetime Compressor |
Product Tips
- Cooling-Only Application: This is an AC-only condenser — it does not provide heating. For year-round comfort, consider the MRCOOL Signature Series Heat Pump Condenser.
- Matched System Required: Always pair with a compatible MRCOOL Signature Series multi-position or horizontal air handler for AHRI certification and warranty compliance.
- R-454B Refrigerant: Factory pre-charged with R-454B — a lower-GWP alternative to R-410A. Ensure your service technician is certified to handle R-454B.
- Electrical Requirements: Requires a dedicated 20A circuit breaker at 208/230V. Consult a licensed electrician before installation.
- Professional Installation Required: Installation must be performed by a licensed HVAC contractor to maintain warranty coverage.
Frequently Asked Questions
Compatible Accessories
- MRCOOL Signature Series Multi-Position Air Handler (MCAEAMPEF series)
- MRCOOL Signature Series Horizontal Coil (MCHP series)
- MRCOOL Signature Series Heat Kit (MCAEHFD / MCAEHWD series)
- MRCOOL Smart Wi-Fi Mini Stat (MSTAT01)
- MRCOOL Non-DIY Central Split System Line Sets
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Warranty Information
The MRCOOL Signature Series AC Condenser includes a 10-Year Parts Warranty and a Limited Lifetime Compressor Warranty when registered within 30 days of installation by a licensed HVAC contractor.
Extra Information
Warranty Information
Parts: 10-year (unregistered)
Register your product within 30 days of installation to activate full warranty coverage. Visit mrcool.com/warranty-registration.
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