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![Boiler Efficiency and Ratings [Beginner's Guide] | My Plumber](https://my-plumber.co.uk/blog/wp-content/uploads/2015/10/boiler-efficiency2.jpg "Boiler Efficiency and Ratings [Beginner's Guide] | My Plumber")
Boiler Efficiency and Ratings [Beginner's Guide] | My Plumber
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AP-154U-T - New Yorker AP-154U-T - AHRI Net (IBR rating) of 117,000 BTU Output, High Efficiency Oil-Fired Steel Water Boiler w/ Coil
