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Costway GreyVolt 18k BTU Mini Split Heat Pump (21 SEER2, 208-230V, Energy Star)

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Kevin h.
04/02/2025
Garage man cave dry cool. Dehumidify mode basement killer
Have a question about Costway GreyVolt 18k BTU Mini Split Heat Pump (21 SEER2, 208-230V, Energy Star)? Feel free to ask!

Specification

SeriesGreyVolt
Zones1
ManufacturerCostway
Manufacturer Part #FP10792US-HS+
TypeMini-Splits
BTU Capacity18000BTU
Max. Coverage Area1250sqft
Tonnage1.5
Refrigerant CompatibilityR32
Number of speeds3
Phase1
Voltage208-230V
Decibel Rating23dBA
Mount typeWall
Filter TypeReusable
ColorGray
Features
  • Dehumidifier
  • Fan only option
  • Heat pump
  • High efficiency
  • Inverter technology
  • Quiet
  • Timer
Air Handler Dimensions LxWxH38 x 8.5 x 12.5in
Condenser Dimensions L x W x H31 x 12 x 22in
SEER221.0
Warranty8 Years

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About product

The GreyVolt Series 18,000 BTU Mini Split AC excels in larger living rooms, open-concept spaces, family rooms, or master suites up to 1,250 sq. ft., where its sleek gray indoor unit blends seamlessly with contemporary interiors while delivering powerful ductless cooling and heating.

This Energy Star-certified 1.5-ton heat pump provides 17,000 BTU cooling and 17,700 BTU heating with 21 SEER2/9 HSPF2 efficiency via inverter technology and ECO mode for reduced energy costs. Four modes (cool, heat, dry, fan), 618 CFM airflow, 82 pints/day dehumidification, and ≤23 dB whisper-quiet operation ensure year-round comfort with a 24-hour timer.

The stylish gray design enhances modern aesthetics alongside R32 refrigerant for eco-performance, 134.6°F self-cleaning, washable filters, and auto defrost for low maintenance. Voice/remote control simplifies operation on 208-230V power, with ETL certification, pre-charged lines, full installation kit, and 8-year compressor/5-year parts warranty for reliable durability.

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  • Overview

Air Conditioner For Sale

With summer temperatures rising 2.1°F since 1970 and energy costs climbing 13% annually, selecting the right air conditioning system affects both your monthly budget and home value.

What Type of Air Conditioner Best Fits Your Living Situation?

Homeowners can choose between central systems, mini-splits, or portable units, while renters face lease restrictions. Window units require no permanent modifications, making them ideal for apartments. Mini-splits offer superior efficiency but need property owner consent.

Expert Tip

Calculate cooling load using 20 BTU per square foot, then add 10% for high ceilings or poor insulation to prevent undersizing and premature failure.

How Do Different Air Conditioner Technologies Compare?

System TypeCooling CapacityEnergy EfficiencyUpfront CostBest For
Window AC5,000-24,000 BTU8-12 EER$150-$800Single rooms, renters
Portable AC8,000-18,000 BTU6-10 EER$300-$900Temporary cooling
Mini-Split9,000-48,000 BTU16-22 SEER$1,500-$8,000Zone cooling
Central AC18,000-60,000 BTU13-20 SEER$3,000-$15,000Whole-home comfort

Modern mini-splits achieve SEER ratings above 20, nearly double the efficiency of older central systems.

Why Do Energy Costs Vary Between System Types?

Operating costs depend on system efficiency, local electricity rates, and usage patterns. At the national average of $0.13 per kWh, running a 10,000 BTU window unit 8 hours daily costs $95 monthly, while an equivalent mini-split costs only $52 due to superior efficiency.

Efficiency Comparison Table:

Daily UsageWindow AC (10 EER)Mini-Split (18 SEER)Central AC (14 SEER)
8 hours$62/month$52/month$158/month
12 hours$93/month$78/month$237/month

What Maintenance Requirements Affect Performance?

Dirty filters reduce airflow by 50%, forcing systems to work harder. Window units and portables need monthly filter cleaning, while central systems require filter replacement every 30-90 days.

Outdoor condenser coils accumulate debris that reduces efficiency by 30% within three years if neglected. Annual professional cleaning costs $150-200 but restores 5-15% efficiency loss.

How Should Climate Conditions Influence Your Selection?

Humidity affects comfort and system selection. Oversized systems cycle rapidly without adequate dehumidification, creating discomfort despite proper temperature control. Variable-speed mini-splits excel in humid climates through precise humidity control.

Expert Tip

In humid regions, size systems for humidity removal rather than temperature reduction. Properly sized units running continuously outperform oversized units cycling frequently.

Which Smart Features Provide Real Value?

WiFi connectivity enables remote control and adds $50-150 to system cost. Real value comes from usage monitoring and maintenance alerts that prevent costly repairs.

Programmable thermostats reduce energy consumption 10-15% through automatic temperature adjustments during unoccupied periods.

What Regulations Apply to Your Installation?

Local building codes often require electrical permits for 240V connections needed by larger units and mini-splits. Permit costs range from $50-200 but ensure safe installation.

HOA restrictions may prohibit visible outdoor equipment. Review covenants before purchasing to avoid installation delays or fines.

🏠 For Renters

Window units and portable systems offer mobility without permanent modifications. Focus on energy efficiency to minimize utility costs.

🏡 For Homeowners

Mini-split and central systems provide long-term value through superior efficiency and increased property value.

💡 Key Decision Factor

Consider your five-year housing situation when making this investment for optimal value.

Conclusion

Air conditioner selection balances upfront cost, operating expenses, and installation constraints. Renters benefit from efficient window units or portable systems. Homeowners should prioritize mini-split or central systems for long-term value and superior efficiency. Consider your five-year housing situation when making this investment.

Ready to Find Your Perfect Air Conditioner?

Explore our complete selection—from central AC to ductless mini splits, plus window, wall, and portable units.

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