UK Heatwave Drives Surge in Portable Air Conditioner Sales: What You Need to Know
As the UK experiences increasingly warmer temperatures, demand for portable air conditioners is skyrocketing, with sales peaking after prolonged periods of hot weather – a trend expected to continue annually.
The rising temperatures are pushing residents to seek relief beyond traditional fans, turning to portable AC units as a viable solution. “People can usually tolerate a hot night or two, but that’s the limit,” one homeowner shared, reflecting a common sentiment as even the most powerful fans struggle to provide adequate cooling.
The Loft Conversion Catalyst
For many, the need for portable AC isn’t a new consideration, but rather an amplified one due to home improvements. One individual recounted their experience after a loft conversion, noting that the space, while offering increased living area, quickly became uninhabitable during warmer months. “Moving up into the roof space has been great in terms of the space, but with a south-facing front and hot air from the rest of the house moving upstairs, the loft space can become unbearable,” they explained. This scenario highlights a growing need for targeted cooling solutions in previously overlooked areas of the home.
Understanding Cooling Capacity: BTUs and Insulation
Choosing the right portable AC unit requires understanding British Thermal Units (BTUs), the standard measure of cooling capacity. Higher BTU ratings indicate greater cooling power, essential for larger spaces and intense heat. However, BTU requirements aren’t solely determined by room size. Insulation plays a crucial role; well-insulated homes retain cool air more effectively, reducing the necessary BTU output.
A BTU Calculator can provide a personalized estimate, but a general guideline suggests a minimum of 10,000 BTUs for most rooms, with 12,000+ BTUs recommended for bedrooms. Experts advise against opting for cheaper models with 8,000 BTUs or less, as they may prove insufficient.
Ducting and Placement: A Critical Consideration
All portable AC units require ducting to vent hot air outside, typically through a window. This process is vital for efficient cooling, as open windows allow hot air to re-enter the room. A proper window seal is therefore essential. While most units include a plastic slide for sash windows, casement windows (those that open outwards) require a fabric kit or a custom plastic insert – readily available from online retailers.
The need for ducting also limits placement options. If a room lacks a suitable window or door leading to the exterior, a portable AC unit will be ineffective. Careful planning and potential furniture rearrangement may be necessary to accommodate the unit’s positioning.
Realistic Expectations: Cooling Speed and Noise
Unlike split AC systems, portable units don’t deliver instant, icy-cold air. Cooling is a gradual process, particularly in very hot rooms. “Turning the AC on as I come up to bed is no good; instead, I need a good two hours before bedtime to get the temperature down to something reasonable,” one user noted, suggesting a proactive approach to temperature management.
A target temperature of 23°C is often sufficient for comfortable sleep while minimizing energy consumption. However, even “quiet” portable AC units generate noticeable noise due to the compressor. Maintaining a stable temperature can reduce compressor run-time and, consequently, noise levels. While not ideal, it’s a compromise compared to the higher cost and installation complexities of split AC systems.
Storage and Maintenance: Preparing for Winter
Portable AC units are bulky and require dedicated storage space during colder months. They should be drained of excess water, stored upright in a dry location – such as a cupboard or garage – and protected from dampness and cold. Laying a unit on its side can damage the compressor or cause refrigerant to shift, requiring a 24-hour upright settling period before reuse. These considerations are crucial before making a purchase.
Are Portable AC Units Worth the Investment?
Despite the drawbacks, portable AC units offer a valuable cooling solution, particularly for those unable to install a permanent system. “Despite the drawbacks, portable AC units are relatively good value and, unlike a fan, will actually cool a room down, provide they have a large enough cooling capacity and they are vented properly,” one homeowner concluded. For those facing increasingly frequent and intense heatwaves, a portable AC unit can make previously unbearable spaces habitable once more.
