Radiant/Hydronics

Hydronic radiant ceiling cooling for smaller buildings.

Removing limitations on radiant heating systems.
By John Siegenthaler, P.E.
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Well-designed and properly installed hydronic radiant heating systems have earned a deserved reputation for superior comfort. Even so, many people hesitate on using these systems because they can’t just push a button on their thermostat to change the system from heating to cooling.


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High pressure goes to low pressure. Always.

Inflation.
By Dan Holohan
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I stopped at the gas station the other day because one of my car’s tires looked a bit low. They charge us for air here on the Isle of Long. When I was a young man, it was free.


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Siegenthaler discusses hydronic heating with renewable energy sources

John Siegenthaler will present a seminar April 2, 2014, at the Mohawk Valley Community College.
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Plumbing & Mechanical columnist and Hydronics Editor John Siegenthaler will present a seminar April 2 at the Mohawk Valley Community College’s Utica Campus on using renewable energy sources such as solar thermal collectors, heat pumps and solid fuel (wood and pellet) boilers with hydronic heating systems.


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Watts Radiant announces radiant floor cooling design services

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Complete suite of services includes calculations and layouts.


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American Standard Water Heaters announces Energy Star-certified products

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American Standard Water Heaters announces HE series, high-efficiency water heater models are now Energy Star certified.


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Commercial tankless water heaters

The Ultra Series’ design of commercial tankless water heaters from Rinnai incorporates two heat exchangers to achieve greater water-heating value from every cubic foot of natural gas or propane.
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The Ultra Series’ design of commercial tankless water heaters from Rinnai incorporates two heat exchangers to achieve greater water-heating value from every cubic foot of natural gas or propane.


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One-bath tankless water heater

Noritz introduces the NR501 outdoor tankless water heater for one-bath homes
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Noritz introduces the NR501 outdoor tankless water heater for one-bath homes


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Commercial gas-fired water heating

RECO USA and Bosch introduce the Thermodyne RBP, an instantaneous, high-efficiency, low-NOx, gas-fired domestic water heating system designed for high volume with precision temperature controls.
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RECO USA and Bosch introduce the Thermodyne RBP, an instantaneous, high-efficiency, low-NOx, gas-fired domestic water heating system designed for high volume with precision temperature controls.


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Commercial chiller

WaterFurnace’s CLW chiller optimizes system performance using a combination of hardware and software options.
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WaterFurnace’s CLW chiller optimizes system performance using a combination of hardware and software options.


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Expansion tank pressurization

Improper air-side pressurization 'wastes' some of the internal volume.
By John Siegenthaler, P.E.
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All closed-loop hydronic systems require an air space to absorb the increased volume of water as it warms during system operation. In most hydronic systems, this task is handled by an expansion tank. In most modern hydronic systems, it’s handled by a diaphragm-type expansion tank.


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2014 Truck of the Month

PM has featured so many great plumbing service trucks! See plenty of them here in our Truck Of The Month Archives page. Are you proud of your truck? Go to our Truck of the Month page to find out how your service truck could be chosen!

9/16/14 9:00 am PDT

Free Webinar: Acoustical Isolation

HOLDRITE will be hosting a free webinar for Acoustical Isolation on Tuesday, Sept. 16, 2014.

Plumbing and Mechanical

2014 August

2014 August

In the August issue of PM, read about the continued construction and renovations being made to hotels and restaurants. Find out the focus of this year's ISH China show will be, who made this month's Truck of the Month and read what Elkay has to say about their commercial construction expansion. Also, read the latest news and discover the newest products being used by professionals in the plumbing and mechanical industry.
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2014 National Plumbing & HVAC Estimator

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

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Truck of the Month

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