Whynter 12,000 BTU Smart Window Air Conditioner with Heat Pump
Available to order — dispatched on the lead time shown below.
Trade pricing available — apply or sign in for your trade rate
Retail prices include VAT.
Offering all-season climate independence, the Whynter 12,000 BTU reverse-cycle window air conditioner delivers both powerful summer cooling and comforting winter heating in a single self-contained unit. Generating up to 11,000 BTU of supplementary heat, it is the perfect solution for domestic conservatories, garden rooms, and outbuildings lacking central heating radiators. Wi-Fi integration pairs seamlessly with smart home networks, allowing effortless temperature scheduling and automation via Amazon Alexa and Google Home. The heavy-duty window bracket assembly safely supports the unit while insulating side accordion panels safeguard against external drafts and dampness. Featuring auto-restart memory, eco operation, and high-efficiency heat exchange, this model provides versatile year-round comfort with manageable self-installation.
Smart-home ready
Connects natively with the systems below — control by app or voice.
- Free UK mainland delivery on in-stock units
- Manufacturer warranty included
- 14-day returns
Technical documents & videos
More from Whynter →Official Whynter manual
The manufacturer's PDF for this model is being sourced and will be downloadable here.
Full Specifications
Physical dimensions
Exact dimensions for this model are being confirmed with Whynter — ask us and we will send the cut sheet with mounting and clearance figures.
Description
Offering all-season climate independence, the Whynter 12,000 BTU reverse-cycle window air conditioner delivers both powerful summer cooling and comforting winter heating in a single self-contained unit. Generating up to 11,000 BTU of supplementary heat, it is the perfect solution for domestic conservatories, garden rooms, and outbuildings lacking central heating radiators. Wi-Fi integration pairs seamlessly with smart home networks, allowing effortless temperature scheduling and automation via Amazon Alexa and Google Home. The heavy-duty window bracket assembly safely supports the unit while insulating side accordion panels safeguard against external drafts and dampness. Featuring auto-restart memory, eco operation, and high-efficiency heat exchange, this model provides versatile year-round comfort with manageable self-installation.
Compare similar units
Side-by-side specs for other window units in a similar BTU range.
Common questions about the Whynter 12,000 BTU Smart Window Air Conditioner with Heat Pump
How many BTU is the Whynter 12,000 BTU Smart Window Air Conditioner with Heat Pump?
The Whynter 12,000 BTU Smart Window Air Conditioner with Heat Pump has a cooling capacity of 12,000 BTU, suitable for Up to 42m².
What room size is the Whynter 12,000 BTU Smart Window Air Conditioner with Heat Pump suitable for?
The Whynter 12,000 BTU Smart Window Air Conditioner with Heat Pump is recommended for rooms Up to 42m².
Can I install the Whynter 12,000 BTU Smart Window Air Conditioner with Heat Pump myself?
Yes — the Whynter 12,000 BTU Smart Window Air Conditioner with Heat Pump is rated as Moderate for self-installation. Guides and video tutorials are available on the product page.
Is the Whynter 12,000 BTU Smart Window Air Conditioner with Heat Pump smart-home compatible?
Yes — the Whynter 12,000 BTU Smart Window Air Conditioner with Heat Pump supports Amazon Alexa, Google Home for app and voice control.
How long does delivery of the Whynter 12,000 BTU Smart Window Air Conditioner with Heat Pump take?
This unit is dispatched in 2-3 working days. Delivery is then 1–2 working days to most UK mainland addresses, and 3–6 working days into the EU.
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Mitsubishi ElectricAnnual energy savings estimate
How much this A+-rated unit could save versus a standard C-rated model, based on your usage.
This unit
115 kWh/yr
EER 11
Standard model
158 kWh/yr
EER 8
Est. saving
£11.65
43 kWh/yr less
Estimate based on the unit's energy-rating efficiency factor and cooling capacity (12,000 BTU). Actual savings vary with room size, climate and usage patterns.
Winter heating cost: this AC vs electric heaters
This unit reverses to heat your room in winter. Based on its 3 kW heat output used 5 hrs/day over a 150-day UK heating season at £0.27/kWh.
Electric heater / season
£653
This AC / season
£218
You save / season
£435
~67% less electricity
| Heating method | Electricity / season | Cost / season | Efficiency | Summer cooling |
|---|---|---|---|---|
| This heat-pump AC | 806 kWh | £218 | Up to 300% | |
| Plug-in electric heater | 2418 kWh | £653 | 100% | |
| Electric storage heater | 2418 kWh | £653 | 100% |
Heat output estimated from this unit's 11,000 BTU/hr rating. A heat pump moves heat (COP ≈ 3), so it uses about a third of the electricity of a direct-electric heater for the same warmth. Actual savings vary with room size, insulation, tariff and usage. See the full comparison →
Share your savings
This heat-pump AC costs only £218/season to heat a room vs £653 for an electric heater - that's £435 saved. https://stockool.store/products/whynter-12000-btu-smart-window-air-conditioner-heat-pump
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