Warm Air

Warm air furnaces comprise the vast majority of overall demand, with 64% of total value sales in 2016. Forced air heating is preferred in the U.S., installed in both commercial and residential buildings. These and other trends are presented in “Heating Equipment Market in the U.S.,” a new study from The Freedonia Group, a Cleveland-based industry research firm. Demand for warm air ...

A look at the new forced-air systems on the market today

A furnace featuring a two-stage burner

A selection of commercial heating/cooling/ventilation offerings

Feature Story by George Lanthier In a previous article we looked at an excerpt from one of our newer books WIRING & Fuel Burning Equipment, Volume One, Fundamentals. In this article we will finish our discussion of switches and look at relays from that text, which is available at our Web site at http://www.firedragonent.com/Books.htm. � Switch DifferentialDifferential is probably the ...

Feature Story by George Lanthier Figure 1 I’d like to preview something new with you and talk about one of my favorite subjects again ‘ draft. When I first started writing for magazines about 20 years ago, my first editor joked to me to, ‘pick something easy to start off with, like draft.” That was one of the greatest understatments ...

Feature Story By George Lanthier Time to do some sizing of multiple-unit fluepipes and wrap this series of articles up. We finished in the last article with the sizing of everything but the common vent pipes and a discussion about the transitions.What about those transitions, and again, there’s a right way and a wrong way. In Figure 1, courtesy of ...

Feature Story By George Lanthier OK, if you remember in the last article we looked at fluepipe design and what it really takes to do it right. Last month we looked at single units, this month it’s multiple units. Keep in mind that I’m continuing to follow the NFPA Standards, NFPA31 and 211, for this subject, and both NFPA and ...

Feature Story By George Lanthier You might look at the title of this article and figure, ‘Oh boy, what’s this now!” Well, as it turns out, I’m learning that fluepipe design is not as easy as some people think it is. In fact, when it comes to the codes and good industry practice, many are doing it very wrong. As ...

Cover StoryUpdated heating system cures the ills of century-old Baptist church By william montgomery Driving up Connecticut’s old Route 7 through the towns of Norwalk, Wilton, Redding and Ridgefield, up into Danbury, you pass through some of the state’s most beautiful scenery. As we took a ride up that route to take a look at a recent steam boiler installation ...