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John Lawless advises simple bedroom cooling tricks for heatwaves
Heatwaves are driving bedroom temperatures to uncomfortable levels, making it harder for many people to fall asleep. Experts recommend low‑cost methods such as placing a frozen water bottle or a thermos filled with cold water under the sheets before bedtime, which can lower the perceived temperature of the sleeping surface.
During the hottest part of the day, closing windows and blinds around 8 a.m.–9 a.m. helps keep hot outdoor air from entering, and opening them only after the outside temperature has dropped prevents a rapid rise in indoor heat. Fans are most effective when internal doors are opened and the units are positioned to draw cooler air into the room rather than simply recirculating warm air. Night‑time ventilation—creating a cross‑draft through the house—can also shave a few degrees off indoor temperatures.
A separate health warning notes that pigeons sometimes build nests inside air‑conditioning units. The nests can harbor bird mites (Ornithonyssus bursa), which may crawl into living spaces and cause itchy skin eruptions. Removing the nest and thoroughly cleaning the unit eliminates the infestation and the associated symptoms.
Entities
BestHeating · John Lawless · Ornithonyssus bursa · Thermos · pigeon
Claims
What the coverage asserts, and how well corroborated each claim is across sources.
- [○ 1 SOURCE] Night‑time cross‑ventilation can reduce indoor temperature by a few degrees. marieclaire.hu
- [● 2 SOURCES] Placing a frozen water bottle or cold‑filled thermos in the bed lowers perceived temperature. marieclaire.hu · nlc.hu
- [○ 1 SOURCE] Fans work best when internal doors are opened and the fan is placed to draw cooler air into the room. marieclaire.hu
- [● 3 SOURCES] Heatwaves raise bedroom temperatures, making sleep difficult. marieclaire.hu · elle.hu · nlc.hu
- [○ 1 SOURCE] Closing windows and blinds around 8 a.m.–9 a.m. prevents hot outside air from raising indoor temperature. marieclaire.hu
- [○ 1 SOURCE] Pigeons may nest inside air‑conditioning units, creating a source of bird mites (Ornithonyssus bursa). elle.hu
- [○ 1 SOURCE] Using a cold water bottle to cool the bed is an energy‑efficient, inexpensive method. nlc.hu
- [○ 1 SOURCE] Bird mite infestations cause itchy skin symptoms that disappear after cleaning the AC unit. elle.hu