Electric cars live and die by their efficiency, and nowhere is that more obvious than on a freezing highway when the cabin heater starts draining range. Tesla’s decision to engineer its own heat pump ...

The current standards for water heaters, which are specified in the Code of Federal Regulations (CFR) in 10 CFR 430.32(d), have been in effect since 2010. One aspect of the upcoming changes is the ...

The Carnot heat engine is a thermodynamic device that converts heat into mechanical work by operating between two temperature reservoirs, a hot and cold one. The engine works by taking heat from the ...

Electric HVAC systems can help you keep your home comfortable using a fraction of the energy. We spoke to experts to find out just how efficient they are. Mike De Socio is a CNET contributor who ...

Cold weather is still the toughest test for electric cars, and the biggest culprit is not the battery chemistry but how the car keeps you warm. If you want your next EV to hold on to its range when ...