One side or the otherMarch 1, 2015 John Siegenthaler
Alternate ways to pipe up a buffer tank.
Methods to prevent motor failureMarch 1, 2015 Dave Demma
Operation and troubleshooting of electric motors – Part II.
Grow the business you can affordMarch 1, 2015 Hank Bulmash
Entrepreneurship comes with risks, but there are steps you can take to improve your chances of success.
Preventive measure proves profitableMarch 1, 2015 Rick Ensley
Using waterless floor drain traps to eliminate sewer odours and evaporation.
Why don’t my floors feel warm?February 1, 2015 John Siegenthaler
Simple solutions to avoid the dilemma of unfulfilled customer expectations.
A little math goes a long wayFebruary 1, 2015 Lance MacNevin
What you need to know about the financial reality of operating snow and ice melt systems.
Pressure and high school chemistryFebruary 1, 2015 Cliff McNeill
How the often misunderstood expansion tank protects closed hydronic systems.
Electric Motors: Operation and TroubleshootingFebruary 1, 2015 Dave Demma
Imagine a world without the electric motor: No elevators, no DVD players, no computer hard drive, no electric clocks, no Toyota Prius’, no washing machines or dryers, no conveyor belts at the supermarket checkout stand, no manufacturing plants of any…
Tips for restaurant hot water systemsFebruary 1, 2015 Amin Delagah
Warming up to a new design perspective-Part I
Ones and zerosFebruary 1, 2015 by hpac
How to incorporate relays into your design strategy.
Ice Machine BasicsFebruary 1, 2015 Mark Masterson
There are many choices of commercial ice machines on the market today. While you might think that the technology for making ice has changed little over the years, this is actually not the case. Technology has advanced and so have…
Heat loss/heat gain considerationsFebruary 1, 2015 Robert Bean
When I joined ASHRAE in 1990, I did not imagine that 25 years later HVAC equipment would be selected and installed in the absence of a heat loss and gain calculation. It is like bad reruns on late night television;…
Exploring the agricultural marketFebruary 1, 2015 Bill Boss
Biofuel heating system raises profits for organic poultry farmer.
Technology pumps out savingsFebruary 1, 2015 Mike Miller
Variable speed pumping has brought new levels of energy efficiency to the HVAC industry. While many larger buildings utilize system pumps operating on variable frequency drives (VFDs) with the guidance of pressure differential sensors, pumps that do not require external…
Ghost-Busting Heat Transfer In Return Air PlenumsDecember 1, 2014 ROBERT BEAN
Common sense, a bit of heat transfer knowledge and strict adherence to specifications go a long way to improving the air/hydronic dynamic.
In Defence Of CompressorsDecember 1, 2014 DAVE DEMMA
Steps to getting at the root cause of compressor failures.
Long Name… Nice Concept…December 1, 2014 JOHN SIEGENTHALER
Use the conditions created by piping, together with circulator characteristics to prevent cavitation.
Why PVC Pipes Sometimes Fail And How To Prevent ItDecember 1, 2014 BRANDON PEACH
Over the years, flexible PVC pipes have become more stable and reliable, achieving a rather low failure rate. However, there are still several ways they can be misused, with the user or installer typically to blame. Here are some do’s…
System Performance Boils Down To Location, Location, LocationDecember 1, 2014 MIKE MILLER
Points to be mindful of when installing and troubleshooting snow melt control.
Safety, Savings and SustainabilityDecember 1, 2014 RON AUVIL
Simple test offers several benefits.
Minimize The Risk Of Legionella In Building Plumbing Supply SystemsDecember 1, 2014 DEREK BOWER
In the plumbing industry in the North America, there is an increasing focus on water quality and waterborne pathogens. For public water systems, the Environmental Protection Agency (EPA) regulates 88 different contaminants, including microbial contaminants, disinfection by-products, organic and inorganic…
Big Van Gets Boost In Worksite ProwessDecember 1, 2014 bill roebuck
Major new features revealed at a press event showcasing the capability of the 2015 Mercedes-Benz Sprinter.
Mechanical Industry Plays Starring Role In NHL’s GoalsDecember 1, 2014 PATRICK CALLAN
The National Hockey League (NHL) released its 2014 NHL Sustainability Report this past summer and with it became the first professional sport in North America to compile a detailed analysis of its carbon footprint. The report looked at the operations…
Take A List – Check It TwiceOctober 1, 2014 by hpac
Step-by-step annual servicing of gas appliances.
Pellets To PEXOctober 1, 2014 JOHN SIEGENTHALER
Combi-systems supplied by modern pellet-fueled boilers.
Be Aware Of Potential RisksOctober 1, 2014 MICHAEL GLASCO
Just how much of a threat is asbestos to mechanical contractors?
News Feature: From The Rock To New OrleansOctober 1, 2014 PATRICK CALLAN
Trades students help rebuild hurricane-ravaged communities.
Anatomy of a single-zone systemOctober 1, 2014 by hpac
When John Raftis, owner of Ivan Armstrong Trucking in Arthus, ON moved forward with a 40,000 sq. ft. warehouse expansion, he decided to go with an in-floor heating system. Raftis wanted a simple system for the insulated steel frame structure,…
Refrigerants, Controls Top Of Mind At AGMOctober 1, 2014 KERRY TURNER
The Heating Refrigeration and Air Conditioning Institute of Canada (HRAI) held its 46th Annual General Meeting and Conference in Montreal, QC, from August 20-23. HRAI, which is in the final year of implementing its three-year strategic plan, opened the conference…
Snow Melt System PerformanceOctober 1, 2014 ROBERT BEAN
Understand the influence of sensitivity and storm characteristics.