A heating and cooling appliance includes a heat pump unit, an electric fireplace having an electric heating element and a display panel included on a front surface of the electric fireplace, a room temperature sensor, and a processor operatively connected to the heat pump unit, the electric heating element, and the room temperature sensor. The processor is configured to operate the heat pump unit in a cooling mode, operate the heat pump unit in a heating mode, or operate the electric heating element, in response to a signal received from the room temperature sensor. The processor is further configured to cause an image to be displayed on a display panel of the electric fireplace when either the heat pump unit or the electric heating element is operated.

A protective barrier affixable to a curved substrate comprises a stack of two or more lenses, each of the two or more lenses including a polyethylene terephthalate (PET) film, a hard coat on a first side of the PET film, and an adhesive layer on a second side of the PET film opposite the first side. The stack of two or more lenses may have a modulation transfer function that exhibits a contrast value greater than 75% for a spatial resolution of one line-pair per 0.0003 radians at 65 degrees angle of incidence. Heat and pressure may be applied to conform the stack of two or more lenses to the shape of the curved substrate.

A humidifying device that adds water vapor to the surrounding air when the device is placed onto a heat source, comprising a vaporizing chamber that holds a relatively small quantity of water and a reservoir that holds a substantially greater quantity of water than the vaporizing chamber, with a support structure interposed between the reservoir and the vaporization chamber, whereby the reservoir is in communication with the vaporizing chamber and automatically adds water to the vaporizing chamber to replenish the water that is vaporized.

A humidifying device that adds water vapor to the surrounding air when the device is placed onto a heat source, comprising a vaporizing chamber that holds a relatively small quantity of water and a reservoir that holds a substantially greater quantity of water than the vaporizing chamber, with a support structure interposed between the reservoir and the vaporization chamber, whereby the reservoir is in communication with the vaporizing chamber and automatically adds water to the vaporizing chamber to replenish the water that is vaporized.