Euro-Radiators Compete To the Editor: Thank you for mentioning ThermoPanel radiators in your recent article on European radiators [Focus on Energy, 10/87]. There were some remarks which I have to take exception to, however. First, you mentioned several times in the article that panel radiators are very expensive. If you consider the Btu output per square foot of ThermoPanel radiators and compare this to U.S. convectors or radiators, we are more than competitive in pricing. Also, we have found that our panel-type radiators have been more than acceptable to housing authorities in the U.S., since we have sold nearly 7,500 radiators to this market in the past year. Macon Control Corporation is not merely a distributor. We buy component parts from the Swedish manufacturer, assemble from