Low Energy Panel Heaters

energy panel
Formerly called an RDG - removable double glazing, is a piece of glass annealed or tempered, and finished on the edges by a surround. EPs are applied to windows or doors and rest on the glazing stop. EPs offer the homeowner added energy efficiency.

heaters
A conductor used for indirect heating of the cathode of a thermionic tube
A fastball
A person or thing that heats, in particular a device for warming the air or water
(heater) device that heats water or supplies warmth to a room
(heater) fastball: (baseball) a pitch thrown with maximum velocity; "he swung late on the fastball"; "he showed batters nothing but smoke"
A heater is object that emits heat or causes another body to achieve a higher temperature. In a household or domestic setting, heaters are usually appliances whose purpose is to generate heating (i.e. warmth). Heaters exists for all states of matter, including solids, liquids and gases.

low
A low point, level or figure
A state of depression or low spirits
an air mass of lower pressure; often brings precipitation; "a low moved in over night bringing sleet and snow"
in a low position; near the ground; "the branches hung low"
less than normal in degree or intensity or amount; "low prices"; "the reservoir is low"
A particularly bad or difficult moment