Review
The Gree Vireo 18,000 BTU single zone heat pump represents solid mid-range positioning in the mini split market. With a 21 SEER2 rating and 10 HSPF2 efficiency, this wall-mounted unit delivers genuine performance without premium pricing. The included wireless controller and Hyper Heat capability add practical value. This isn't Gree's flagship offering, but it's a reliable workhorse for homeowners seeking efficiency without unnecessary features.
Real-world performance hinges on your climate. The 18,000 BTU capacity handles cooling efficiently at 21 SEER2, translating to roughly 18-20% lower cooling costs versus standard 13 SEER units. Heating operates reliably to -5F with a 10 HSPF2 rating, though performance degrades below that threshold. The rotary compressor operates at 29-49 dB(A), and 283-618 CFM airflow delivers adequate comfort for rooms up to 600 square feet.
Pros & Cons
Pros
- 21 SEER2 efficiency rating places it among top-tier single zone units for cooling performance
- Hyper Heat technology enables operation down to -5F for extended heating season capability
- 10 HSPF2 heating efficiency is competitive and reduces winter operating costs
- Includes wireless controller standard, eliminating additional expense and installation complexity
- Quiet operation at 29-49 dB(A) range makes it suitable for bedrooms and living spaces
Cons
- Single zone limitation means this 18,000 BTU unit cannot serve multiple rooms simultaneously
- Not Energy Star certified despite strong SEER2 numbers, which some utility rebate programs prioritize
- Minimum outdoor heating temperature of -5F limits effectiveness in extreme cold climates requiring backup heat
Who Should Buy
Best For
This unit suits homeowners retrofitting a single room with a high-efficiency system or contractors building new construction in moderate climates. It's ideal for converting a room addition or den into a separately controlled comfort zone without ductwork.
Consider Alternatives If
Skip this if you need multi-zone coverage, live in regions with sustained temperatures below -5F without backup heating, or require Energy Star certification for utility rebates.
Installation
Installation requires a single outdoor unit connection with refrigerant lines (1/4 inch liquid, 5/8 inch suction) pre-charged for 131 feet. The wall-mounted indoor unit measures 38.7 inches wide and weighs 35.3 pounds. Electrical demand stays modest at 208/230V single phase with a 24-40 amp breaker requirement. Most licensed HVAC contractors complete installation in 4-6 hours.
Warranty & Reliability
Gree backs this unit with a 5-year limited parts warranty covering compressor, controls, and heat exchanger defects. This matches industry standard for residential mini splits. Labor and refrigerant are not covered, so factor service costs into ownership planning. Extended warranties are typically available through retailers.
Specifications
| SKU | 3VIR18HP230V1BH |
| Brand/Manufacturer | Gree |
| Cooling BTU | 18,000 |
| Heating BTU | 18,000 |
| Refrigerant | R410A |
| Electrical | 208/230V 1 Phase 60Hz |
| BTU/Tonnage | 18,000 BTU/1.5 Ton |
| Mini Split Type | Wall Mounted |
| Zone Compatibility | Single Zone |
| Warranty | 5 year Limited Parts Warranty |
| Decibel Level (dBA) | Indoor Unit: 29-49 dB(A) |
| Weight (in lbs) | 35.300000 |
| Feature | Spec |
| Refrigerant Charge | Pre-charged for: 131' |
| AHRI Certificate Number | 210278982 & 210278981 |
| Product Features | Hyper Heat |
| Additional Information | Drain: 5/8" |
| Energy Star | No |
| HSPF2 | 10 |
| SEER2 (Efficiency) | 21 |
| Compressor Type | Rotary |
| Liquid Line | 1/4" |
| Suction Line | 5/8" |
| Phase | Single Phase |
| Max Breaker Size | 40 amps |
| Min. Breaker Size | 24 amps |
| Tonnage | 3.5 Ton |
| Min/Max Outdoor Temp for Heating | -5F - 86F |
| Min/Max Outdoor Temp for Cooling | 0F - 118F |
| Height | 12.25" |
| Width | 38.6875" |
| Depth | 8.75" |
| Resources | Brochure Submittal Installation Manual Operation Manual Service Manual Parts Manual You will need Adobe® Acrobat® Reader to view PDF documents. |
| Safety Information | PROPOSITION 65 WARNING This product and many products on our site may contain a chemical know to the state of California to cause cancer or birth defects or other reproductive harm. For more information about Proposition 65 please Click Here. |
| Replaces | 3VIR18HP230V1AH |
| Controller | Wireless Included |
| Maximum CFM | 283-618 CFM |
| Electric Heat | Heat Pump |
Frequently Asked Questions
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