
Lennox MWHD Standard Efficiency Heat Pump 12k BTU
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Experience consistent, reliable climate control with the Lennox MWHD Standard Efficiency Heat Pump. This 12,000 BTU split system is engineered to provide powerful cooling and efficient heating for medium-sized rooms, ensuring your environment remains comfortable regardless of the external temperature. The MWHD series is renowned for its robust build quality and straightforward operation, making it a dependable choice for residential applications. By utilising inverter technology, the system maintains a steady temperature without the frequent cycling associated with older units, which helps in lowering your overall energy bills. Its compact indoor unit is designed for easy wall mounting, while the outdoor condenser is built to withstand the UK climate. This unit is perfect for homeowners seeking a balance between performance, energy efficiency, and value. As a split system, it requires professional installation by a qualified engineer to ensure the refrigerant lines are correctly commissioned and the system operates at peak performance.
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- Free UK mainland delivery on in-stock units
- Manufacturer warranty included
- 14-day returns
Full Specifications
Description
Experience consistent, reliable climate control with the Lennox MWHD Standard Efficiency Heat Pump. This 12,000 BTU split system is engineered to provide powerful cooling and efficient heating for medium-sized rooms, ensuring your environment remains comfortable regardless of the external temperature. The MWHD series is renowned for its robust build quality and straightforward operation, making it a dependable choice for residential applications. By utilising inverter technology, the system maintains a steady temperature without the frequent cycling associated with older units, which helps in lowering your overall energy bills. Its compact indoor unit is designed for easy wall mounting, while the outdoor condenser is built to withstand the UK climate. This unit is perfect for homeowners seeking a balance between performance, energy efficiency, and value. As a split system, it requires professional installation by a qualified engineer to ensure the refrigerant lines are correctly commissioned and the system operates at peak performance.
Compare similar units
Side-by-side specs for other split system ac in a similar BTU range.
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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 4 kW heat output used 5 hrs/day over a 150-day UK heating season at £0.27/kWh.
Electric heater / season
£742
This AC / season
£247
You save / season
£495
~67% less electricity
| Heating method | Electricity / season | Cost / season | Efficiency | Summer cooling |
|---|---|---|---|---|
| This heat-pump AC | 916 kWh | £247 | Up to 300% | |
| Plug-in electric heater | 2748 kWh | £742 | 100% | |
| Electric storage heater | 2748 kWh | £742 | 100% |
Heat output estimated from this unit's 12,500 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 £247/season to heat a room vs £742 for an electric heater - that's £495 saved. https://stockool.store/products/lennox-mwhd-standard-efficiency-heat-pump-12k
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