USA's Most Trusted MRCOOL Dealer – Free Shipping On Systems*
Signature · Indoor air handler
MCAEAWPEF18D21AA$1,077.03
Actual product imagery · illustration does not confirm shipped accessories
Authorized DealerMRCOOL DIY DIRECT Signature Series
Choose the exact component. Commission a professionally matched system.
MCAEAWPEF18D21AA
Selected equipment configuration · MCAEAWPEF18D21AA
Traditional HVAC installation. Signature is not a DIY-install system. Plan installation with a qualified HVAC professional; follow MRCOOL instructions and applicable licensing and code requirements. Installation & warranty details
Checking this configuration…
Signature split equipment
Homeowners and professionals can purchase this equipment online. This is an individual indoor air handler, not a complete indoor/outdoor system. Matching equipment and installation materials are separate unless expressly listed as included.
Use the exact-model installation instructions and a verified equipment match. Refrigerant connections, evacuation, commissioning, electrical work, ductwork and permits require appropriate expertise. A licensed contractor is required where applicable law or manufacturer-directed diagnostics require one.
The applicable limited warranty provides 10-year limited parts coverage. Labor, installation, diagnostics, refrigerant and freight are excluded under the linked terms. Coverage is subject to authorized-dealer purchase, compliant installation, approved matching, maintenance and the other conditions and exclusions in the warranty.
Keep proof of purchase and installation records. Follow any registration instructions supplied with your equipment; the linked warranty does not state a registration-based extension deadline. Optional CPS protection is separate from the manufacturer warranty.
Read the Signature split equipment warranty PDF ↗MRCOOL Signature 1.5 Ton 18K BTU Split System Air Handler Stud Mount, MCAEAWPEF18D21AA is an indoor HVAC component from MRCOOL. Key catalog details include 18K BTU, Ducted. The details below identify the exact listing scope and configuration so you can verify fit before ordering.
MRCOOL Signature 1.5 Ton 18K BTU Split System Air Handler Stud Mount, MCAEAWPEF18D21AA is an indoor HVAC component from MRCOOL. Key catalog details include 18K BTU, Ducted. The details below identify the exact listing scope and configuration so you can verify fit before ordering.
| Brand | MRCOOL |
|---|---|
| Listing type | Indoor HVAC Component |
| Model / base SKU | MCAEAWPEF18D21AA |
| Nominal capacity | 18K BTU |
| Mount type | Ducted |
| Tonnage | 1.5 Ton |
HVAC, refrigerant, gas, and electrical work must follow manufacturer instructions and local code. Professional installation may be required for proper commissioning, safety, and warranty eligibility.
10-year limited parts coverage. Coverage starts from proof of purchase and is non-transferable. Authorized-dealer purchase, approved equipment matching, compliant installation and maintenance are required. Labor, refrigerant and freight are excluded. A licensed contractor is required where law or manufacturer-directed diagnostics require one. This air handler does not include a compressor. See the full manufacturer terms and exclusions. Read the applicable MRCOOL limited-warranty PDF.
These details supplement the original product information above. System efficiency depends on the exact approved equipment match.
| Voltage | 208/230 V |
|---|---|
| Phase | 1 |
| Frequency | 60 Hz |
| Maximum fuse or breaker | 3 A |
| Minimum circuit ampacity | 2.5 A |
| Refrigerant | R-454B |
| Liquid line | 3/8 in |
| Suction line | 3/4 in |
| Airflow | 685 CFM |
| Depth | 15 in |
| Height | 36 in |
| Width | 20.5 in |
| Weight | 88 lb |
PLAN YOUR WHOLE-HOME COMFORT
A matched air handler and outdoor heat pump connect with refrigerant piping. Plan indoor space, duct airflow and the exact connection method.
Buying difference: verify the actual equipment package and line-set configuration. HyperHeat, VersaPro, Universal and Signature have distinct purchasing rules; Signature stays professional/traditional.
Explore central ducted systems ↗Heating and cooling equipment is assembled outdoors and connected to your ducts. Verify discharge direction, design-temperature heating output and electrical service.
Buying difference: no split-system line set. Optional auxiliary heat needs an exact compatible kit and circuit plan; it is not assumed included.
Explore packaged equipment ↗One outdoor cabinet combines a gas furnace and air conditioning. Your qualified installer must verify fuel supply, combustion, exhaust and duct configuration.
Buying difference: gas input is not delivered heat output. Do not assume conversion-kit availability or homeowner installation.
Explore gas/electric equipment ↗REPLACEMENT SEASON, PLANNED WELL
For cold-weather replacement, compare exact heating output at your local design conditions—not nominal tonnage alone. Existing ducts, available fuel, electrical capacity and professional installation all matter. Have a qualified installer verify the exact model’s heating performance, available service and site requirements.
EXACT-MODEL INFORMATION
5 resources
Specifications for MCAEAWPEF18D21AA, rated capacities and applicable revision.
Qualified installation, ductwork, circuits and exact model requirements.
Read applicable conditions and exclusions. No additional labor promise.
Find model-specific manuals, specifications and warranty documents.
Verify equipment, controls, accessories and delivery requirements before ordering.
GOOD QUESTIONS. CLEAR ANSWERS.
This listing is the indoor air handler only. It is not an indoor/outdoor equipment bundle.. This listing is for the identified equipment component; a compatible complete system may require separately purchased equipment and installation materials.
Professional/traditional installation only. No pre-charged DIY pathway, unverified companion equipment, heat kit or conversion kit is selected. A system match requires exact manufacturer/AHRI evidence; no pairing is inferred from tonnage.
Follow the exact model instructions, permits and local codes. Installation method, refrigerant connection type and included equipment are separate decisions.
Floor area alone does not establish design load. Use our existing Manual J planning tool and have the exact equipment selection checked against your home, ducts, climate and installation requirements.
Use the exact model-family limited warranty linked above. Purchase date, application, installation and other conditions matter. This page makes no automatic labor-coverage promise and does not replace the manufacturer’s terms.
No. Add to Cart adds only MCAEAWPEF18D21AA and your selected quantity. Line sets, controls and other installation materials are separate purchases. Check the exact matched equipment and connection requirements before choosing accessories.
