5 REET WINNETKA WEEKLY TALK, SATURDAY, MAY 30, 1925 "2A HART -HEAT, THE U'NITA'CTI'O'N SYSTEM OF OIL FUEL HEATING We will be open for demonstration of this wonderful Burner in our new home, 744 Elm Street, on Monday, June 1st. Back of Hort Heat is a firmly estad- lished, modern institution, with 35 years of machine manufacturing experience and an international repstation for mechanical masufocturing excellence Install Hart-Heat cApw/ Let us explain how the perfecting principle Lem UNITACTION solves every 0il burner problem Questions Ask them of every oil burner you consider 1. Is it controlled by the principle of UNITACTION? 2. Does it employ the principle of AIREATION? 3. Can fuel thatis not thoroughly "air- eated" enter combustion chamber? 4. Does it burn "aireated" oil in sus~ pension in the presence of a refrac- tory material? 5. Will it burn the cheaper grades of oil fuel? 6. Is its entire operation controlled by heat? 7. Has it an adjustable air and oil sup- ply permitting proper size of flame for various heating plants? 8. Has it positive and constant feed regulation? 9. Do ignition electrodes remain ex~ posed to the oil and flame? 10. Is starting prevented when the fur- nace is hot and capable of causing an unnatural ignition of the fuel? 11. Does it ignite quietly and smoothly without a nerve-racking 'flare back'? 12. Has it eliminated troublesome clocks? 13. Does the machine interfere with radio reception? 14. Is any part of the burner in the combustion chamber? 15. Has ita wastefu] pilot Hehe 16. Are drip pots eliminated 17. Is it built complete tly. Coty or is it an 18. Are all parts easily Mw 19. Are the parts made with the pre cision of the finest automobile? 20. Is the burner entirely covered? 21. Are experts who install the burner schooled at factory? 22. Is it listed as standard by the Un~ derwriters' Laboratories? 23. Has it a flue thermostat control listed as standard by the Undes- writers' Laboratories? 24. Is there a company of 35 years of successful machine manufacturing behind it? The perfecting principle of Unitac- tion answers every one HAT would it mean to you to be able to dismiss from your mind en- tirely your home-heating problem? To know that nomatter how severe or mild the weather, the temperature of your home will be just what you want it -- without any thought whatever on your part. This is what the principle of UNIT- ACTION -- exclusive to Hart Heat--as- sures you. We want a chance to prove it. At last oil fuel heating has been per- fected! The application of the principle of UNITACTION, to oil fuel burners, alone has made this possible. Four years of intensive research -- four years of expensive experiment-- unneces- sarily severe tests--then came the abso- lute assurance that perfection had been reached. Hart Heat--the UNITACTION controlled oil fuel burner is the result. We want to explain this new principle to you. We want to show you why the final perfecting principle UNITACTION is absolutely essential to satisfactory oil fuel heating. We want to demonstrate this remarkable means of regulation by which each unit is caused to act in pre- cise co-ordination with every other. Write, or telephone, or call for your copy of "24 Burning Questions" -- and their answers -- your standard of comparison. Only the oil burner that can satisfactorily answer all of these will be your most profitable oil burner investment. Arm your- self with the facts. Above all, don't fail to investigate thoroughly the principle of UNITACTION. We are at your service. Come in and ask questions. Hart Heat is "Listed as Standard" by the Underwriters' Laboratories T HEAT THE U'NITA:CTION SYSTEM OF OIL FUEL HEATING AYRES -TEFFT CO. 744 ELM STREET Phone Winnetka 1146 WINNETKA