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Therm-a-Rest Parsec 20F/-6C sleeping bag review: "Premium build quality"

For January 2026, the Therm-a-Rest Parsec has received a significant upgrade that elevates its performance, design and eco credentials to a more premium level. US brand Therm-a-Rest are one of the ...
Electrek

US companies are producing heat pumps that work below -20F

Heating and cooling equipment multinational Johnson Controls has developed an air source heat pump prototype that can operate in temperatures below -20F (-29C) as part of the US Department of Energy’s ...
Shephard Media

Chinese Z-20F ASW helicopter makes tantalising appearance

It is well known that one significant capability gap in the People’s Liberation Army Navy (PLAN) is an effective anti-submarine warfare (ASW) helicopter, but the Z-20F will soon fill that hole. Photos ...
Electrek

Lennox’s new extreme cold heat pump operates at as low as -20F

Lennox Residential HVAC has launched an extreme cold climate heat pump that warms a house with low global warming potential (GWP) refrigerant in temperatures as low as -20F. It’s called the Dave ...