In this occasional series, HPAC Engineering shares current useful and actionable information about the U.S. boiler industry, as compiled by the knowledgeable and prolific content creators at WARE. The family-owned, third-generation, commercial and industrial boiler rental and service firm is based in Louisville KY.

• For more boiler education videos, visit the vast WARE resource library here.

A thousand horsepower out of roughly the same trailer footprint that used to top out at 250? That's not magic; it's engineering!

Here, WARE's Ritchie Ware and Stephen Taylor break down how rental boiler capacity has grown from 250 HP to 1,000 HP without dramatically increasing trailer size — covering finned tubes, XD rifled fire tubes, heating surface design, residence time, flue gas recirculation, and the real trade-offs between NOx emissions tiers and output capacity.

Why it matters? If you're specifying, renting, or operating a large mobile or packaged boiler, understanding the relationship between heating surface, burner sizing, emissions requirements, and actual output capacity helps you make smarter decisions — and avoid surprises when your NOx tier changes your available steam.

WARE operates one of the largest mobile rental boiler fleets in the country, including 1,000 HP water tube units on 57-foot trailers with full water treatment and high-efficiency low-NOx burners — this video comes directly from the people who built them.

For more, visit BoilerWAREhouse: https://www.boilerwarehouse.com. To learn about WARE's boiler service, rentals, training, and support, go to: https://www.wareinc.com. For boiler training and operator education, check out http://www.boileruniversity.com.