Whynter
NEX ARC-1230WNH (cool + heat)
The heat-capable Whynter NEX ARC-1230WNH matches the ARC-1230WN dual-hose platform (14,000 BTU ASHRAE / 12,000 BTU SACC) with a certified CEER of 14.2, adding a heat mode for year-round comfort in rooms up to 550 sq ft by its SACC.
$759
Live price at SylvanePrice checked Oct 27, 2026
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Will it cool your room?
This unit's cooling matches your 550 sq ft room, on an estimate from its cooling power.
The portable units we list are not ENERGY STAR certified, and portables are rated on a different (SACC) basis that is not comparable to the nameplate-BTU estimate the window figure uses, so there is no honest dollar figure to show here. As a category, portables (single-hose models especially) usually run less efficiently than a comparable window unit.
At a glance
Best for efficient year-round dual-hose portable.
Performance
- Cooling capacity
- 14,000 BTU · 12,000 BTU SACC
- Heating capacity
- Yes
- Room coverage
- up to 550 sq ft by its DOE rating (Whynter states 600 sq ft)
- Energy Star
- No
- CEER
- 14.2
- Annual energy (cooling)
- Not published
Noise, size & features
- Model number
- ARC-1230WNH
- Indoor noise
- 42 dB(A)about as loud as a quiet library
- Outdoor noise
- Not published
- Indoor unit
- 32.5 in H x 19.5 in W x 16.75 in D
- Outdoor unit
- None
- Refrigerant
- R-32
- Wi-Fi / app
- Yes
- Outdoor unit needed
- No
- Power supply
- 115 V, NEMA 5-15P plug
- Warranty
- 3-Year Limited Compressor Warranty, 1-Year Limited Parts Warranty
Supply voltage, plug, refrigerant and warranty are from Sylvane's published specifications for this exact configuration, checked Oct 16, 2026.
What is good
- Certified CEER 14.2 on DOE's portable test, plus a heat mode for year-round use
- Dual hose-in-hose inverter cooling for rooms up to 550 sq ft by its 12,000 BTU SACC
- Smart Wi-Fi with Alexa, Google and app control
What to watch
- Not ENERGY STAR; premium price
- Heavy (about 77 lbs)
Installation & the rules that apply
This is a portable monobloc. The most regulation-light option by far. No EPA Section 608 certified technician is needed because the refrigerant circuit is factory-sealed and never opened, no building or mechanical permit is triggered since nothing is fixed to the structure, and a landlord has little ground to refuse a unit that leaves no permanent alteration. The real constraints are your lease or HOA rules on how the window kit looks from outside, and noise to neighbours.
Plug and play
R-32
Common questions about the Whynter NEX ARC-1230WNH (cool + heat)
- How loud is the Whynter NEX ARC-1230WNH (cool + heat)?
- 42 dB(A) indoors, about as loud as a quiet library.
- How energy-efficient is the Whynter NEX ARC-1230WNH (cool + heat)?
- Its efficiency rating is CEER 14.2.
- What size room does the Whynter NEX ARC-1230WNH (cool + heat) cool?
- A room up to 550 sq ft. Whynter rates it for 600 sq ft, the room its 14,000 BTU box rating would suit, but a portable is sized by its SACC, which counts the heat its exhaust hose and casing put back into the room, and ENERGY STAR's sizing chart gives the 12,000 BTU (SACC) the Department of Energy certifies it at a room up to 550 sq ft.
- Do I need a professional to install the Whynter NEX ARC-1230WNH (cool + heat)?
- No. It is a portable monobloc you can fit yourself, no professional needed. No permission needed.
- Does the Whynter NEX ARC-1230WNH (cool + heat) heat as well as cool?
- Yes. It also heats.
Is a portable even the right type?
Compare portables against the other types on price, noise, efficiency and install.
Buying guides for a portable monobloc like this
The questions buyers ask, answered from live prices and real specs. See where a portable monobloc like this fits.
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$759
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