Description
Signature Series TruInverter 24K BTU Indoor Air Handler – Air Handler ONLY – R-454B
Solution Statement
Designed for HVAC professionals and homeowners seeking a premium central ducted replacement or new-install indoor air handler, the MRCOOL Signature Series TruInverter 24K BTU Multi-Position Air Handler delivers precise inverter-driven comfort in any climate. Whether you’re upgrading an aging system or completing a new construction project, this unit’s “Free Match” universal compatibility and flexible 4-way installation orientation make it the ideal solution for virtually any application. Paired with the matching TruInverter condenser, it forms a complete high-efficiency heat pump system using eco-friendly R-454B refrigerant.
Key Features
- Advanced TruInverter technology maintains temperature within 2°F of your set point
- 4-way installation flexibility: upflow, downflow, horizontal left, horizontal right
- Eco-friendly R-454B refrigerant (GWP 467 — significantly lower than R-410A)
- Slide-out blower for fast, tool-free service access
- Tool-free filter removal with manual-twist screws
- Smart diagnostics with integrated intelligent error codes
- “Free Match” technology — compatible with most 3rd-party 24V thermostats
- No complex communication wiring required between indoor and outdoor units
- 10-year limited parts warranty (with registration)
Technical Specifications
| Specification | Value |
|---|---|
| Model Number | MCAEAMPVT24D21BA |
| Series | Signature Series TruInverter |
| Nominal Capacity | 24K BTU/h |
| Cooling Capacity | 24,000 BTU/h |
| Heating Capacity @ 47°F / 8.3°C | 24,000 BTU/h |
| Heating Capacity @ 17°F / -8.3°C | 18,500 BTU/h |
| SEER2 | 18.0 |
| HSPF2-4 | 9.0 |
| COP2 @ 47°F | 3.2 |
| Voltage | 208/230V – 60Hz – 1Ph |
| Refrigerant | R-454B |
| Min. Circuit Ampacity (Indoor) | 5A |
| Max. Overcurrent Protection (Indoor) | 15A |
| Airflow Volume | 850 CFM |
| Indoor Sound Pressure Level | 57 dB(A) |
| External Static Pressure | 0.8 in.w.c. |
| Net Dimensions (W×H×D) | 21" × 46.5" × 21" (533 × 1180 × 533 mm) |
| Net Weight | 126.8 lbs (57.5 kg) |
| Gross Weight (Packaged) | 162 lbs (73.5 kg) |
| Compatible Outdoor Unit | MCAESHV8T2421BA |
| Installation Type | Multi-Position (4-way) |
| Warranty | 10-Year Limited Parts |
Product Tips
This unit requires a dedicated 208/230V circuit. Confirm your panel has capacity before ordering.
Line sets are not included. Select the MRCOOL No Vac® Quick Connect® Line Set length that matches your installation distance.
Register within 30 days of installation to activate the full 10-year limited parts warranty.
Clean or replace the air filter every 1–3 months depending on usage and air quality to maintain peak efficiency.
This unit must be installed by a licensed HVAC technician. Improper installation may void the warranty.
Frequently Asked Questions
No. The Signature Series TruInverter Air Handler requires installation by a licensed HVAC professional. R-454B refrigerant handling requires EPA Section 608 certification.
The 24K BTU model is designed for spaces requiring approximately 24K BTU of capacity. A Manual J load calculation is recommended for accurate sizing.
This unit uses R-454B refrigerant, a next-generation low-GWP (467) refrigerant significantly more eco-friendly than R-410A.
Yes. The TruInverter system provides reliable heating down to -5°F. At 17°F, it delivers 18,500 BTU/h of heating capacity.
No. Line sets are sold separately in 16 ft, 25 ft, 35 ft, and 50 ft lengths.
Minimum circuit ampacity of 5A, maximum overcurrent protection of 15A on a 208/230V single-phase 60Hz circuit.
Yes. “Free Match” technology allows compatibility with most standard 3rd-party 24V thermostats.
10-year limited parts warranty when registered within 30 days of installation by a licensed HVAC professional.
Clean or replace the air filter every 1–3 months. Annual professional inspection recommended. The slide-out blower design makes service access fast and easy.
MRCOOL No Vac® Quick Connect® Line Sets (16 ft, 25 ft, 35 ft, 50 ft), standard 24V thermostats, and the matching outdoor condenser (MCAESHV8T2421BA).
Warranty Information
Backed by a 10-year limited parts warranty when installed by a licensed HVAC professional and registered within 30 days of installation.
