Boilers & Hydronics

How Hydronic Heating Systems Began

A Posthumous Chat with Ara Marcus Daniels, a Forefather of Hydronic Heating

I was having a conversation the other day with Ara Marcus Daniels, author of many plumbing books, who is quite dead. I do such things because I have time on my hands and not much of a life.


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New Products Available on the Commercial Market

Efficiency, Comfort are Featured in New Heating Equipment

HVAC manufacturers share their latest heating products — including photos, specifications, warranty info, and more — in this detailed showcase.


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Hydronic Radiant Ceiling Cooling for Smaller Buildings

Though More Expensive, Radiant Trumps Forced Air in Comfort

The combined cost of hydronic radiant panel heating, along with a separate central cooling system, often strains the construction budget to a point where something has to go, and that something is usually the radiant heating option. It gets trumped by a lower-cost forced-air system that delivers both heating and cooling, albeit often at reduced comfort.


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Infloor Heating Systems: Custom Mechanical Boards

These custom mechanical boards are designed for hydronic radiant heating systems. Each board comes pre-piped and pre-wired with a custom drawing for fast and easy installation. Just mount it to the wall and connect it to the system.


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Laars Heating Systems Co., a subsidiary of Bradford White Corp.: Combi Boiler/Water Heater

The natural gas or LP-fired Mascot LX features a Laars heat exchanger and offers 95 percent efficiency, full modulation, and a plentiful supply of domestic hot water on combination units.


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Facts + Figures: Sept. 8, 2014

Residential Electric Storage Water Heater Shipments Up 11 Percent in June

Industry figures are estimates that are derived from the best available figures supplied by a sample of AHRI member companies.


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A.O. Smith Corp.: Gas Water Heater

The Cyclone® Mxi is a modulating, high-efficiency commercial gas water heater that delivers efficiencies up to 98 percent. 


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High Pressure Always Goes to Low Pressure

Without a Difference in Pressure, There Can Be No Flow

Since heat travels on flow like a passenger on a train, where there is no flow, there is no heat. And it’s going to look just like an air problem. Which it’s not.


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Schools Strive for Efficiency, Comfort

New HVAC Technologies Help Administrators Meet Indoor Environment Goals

Across the country, school administrators are realizing the importance of good IAQ and a comfortable indoor environment, which both contribute significantly to student success. 


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Tips for Updating School HVAC Equipment

Financing Options Help Schools Meet HVAC Project Goals

According to the manufacturers that make equipment for schools, there are often many options available to districts looking to make those much-needed upgrades.


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Multimedia

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2014 World Energy Engineering Congress

Scenes from the 2014 World Energy Engineering Congress in Washington, D.C.

Podcasts

NEWSMakers: Matt Barga

Matt Barga, portfolio manager — a/c and coils, Ingersoll Rand, discusses how the company is working to comply with the new energy conservation standards for heat pumps and air conditioners that go into effect on Jan. 1, 2015. Posted on Dec. 19.

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2014 December 22

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2015 National Plumbing & HVAC Estimator

Every plumbing and HVAC estimator can use the cost estimates in this practical manual!

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