Page 55 Advertisement 2

New Zealand Tablet, Volume L, Issue 16, 26 April 1923, Page 55

Ra-Do R timeless Gas Heaters A modern gas heating system different in principle from all others. Thousands in use giving perfect satisfaction. If No fumes or sweating of walls; no damage to stock, books, etc, If Perfectly healthful, having a chemical compound which purifies and properly humidifies the heat, provides adequate oxygen and maintains systematic circulation of air. If No vent pipe, flue or chimney necessary, therefore 100 per cent, efficient because there is no, loss of heat. Uses half the gas of other systems, operating cost very small. To appreciate Ra-Do Radiators it must be understood that they give two kinds of heat: —First, is the direct heat, which, after' passing around through the radiator enters the Retort where it is purified before it comes out into the room as pure, hot, breathable air like that from a hot air furnace. This is a large percentage of the total heat, and is all lost through the vent pipe by other gas radiators. Second, is the Radiated heat from the iron, similar to that from steam and hot water radiators. The burner, being the same in all three sizes, passes the same amount of direct hot air into the room through the Retort of radiator, but the amount of radiated heat is increased by adding more sections.