HPAC Magazine

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Article HPAC GeneralRefrigeration

Making the transition to low GWP refrigerants

March 4, 2018 Brian S. Smith

Currently, the HVAC/R industry is undergoing a third paradigm shift in regulating refrigerants–this time the transition is specifically aimed at addressing climate change and greenhouse gas emissions. The earlier two transitions from CFCs to HCFCs, then from HCFCs to HFCs,

Article HVAC SystemsHydronics

Building performance and comfort: Human factors and their influence

March 3, 2018 Robert Bean

Over the course of your career you have probably used a number of strategies to compete for projects. Maybe your choice de jour was to do battle using a lowest price model. Maybe you got tired of dealing with headaches

Article ControlsHealth & SafetyHPAC General

Taking the mystery out of electricity in HVAC

March 2, 2018 Curtis Bennett

How many times have you heard someone say “Who let the smoke out?” in a mechanical room. You see the infamous “black smoke” come out of a piece of electronics and everyone starts pointing fingers. We have all done it.

Article ControlsHydronics

Getting it right – part II: Troubleshooting hydronic controls

March 1, 2018 Mike Miller

As it was noted in Part I of this series (see HPAC February 2018), control systems are often blamed when something is not operating as expected. More often than not, if hydronic controls do not perform as needed, something happened

Article Health & SafetyHPAC General

Virtual reality: A new frontier for HVAC training

February 23, 2018 Robert Waters

When most people think of Virtual Reality (VR), they often think of video games and big, geeky looking goggles covering most of the user’s face. That perception is about to change. The world of VR is exploding with new applications

Article HPAC General

Tax planning tool in CRA’s sights

February 23, 2018 Hank Bulmash

In 1982, a businessman named Melville Neuman had a bright idea. He thought he had figured out a way to split income with his wife using a family holding company (holdco). Neuman had his wife incorporate a company. She took

Modern Hydronics Boilers
Article

Boiler modulation – is more better?

February 23, 2018 David Connors

The benefits of boiler modulation are threefold; it reduces cycle losses, it reduces the wear on the components, and it can (but not necessarily as shown later in this article) result in higher thermal efficiencies. But aside from the benefits,

Siegenthaler,hydronic systems
Article Hydronics

Lowering the bar – part I: Modifying high-temp distribution systems

February 23, 2018 John Siegenthaler

What characteristic do solar thermal collectors, hydronic heat pumps and thermal storage tanks supplied by biomass boilers have in common? Answer: They all perform best when coupled to distribution systems that operate at low supply water temperatures. But that is

Article ControlsHydronics

Getting it right – part I: Troubleshooting hydronic control systems

February 23, 2018 Mike Miller

Control systems are often blamed when hydronic systems are not operating properly. While that may sometimes be the case, always look at what else may be influencing performance. While control systems are not flawless, consider that they are developed in

Siegenthaler,hydronic systems
Article Hydronics

Lowering the bar – part II: Using heat emitters

February 23, 2018 John Siegenthaler

In Lowering the bar–part I, we discussed how to size supplemental heat emitters that allow the supply water temperature to an existing distribution system to be reduced. The next step is to pipe those supplemental heat emitters into the existing

Digitial marketing for trades plumbing HVAC
Article HPAC GeneralManagement

Traditional to digital marketing for HVAC, plumbing businesses

February 23, 2018 Jillian Morgan

James Memije and Aaron Bond often pose a simple question to new clients: “How did you find out about us?” Typically, the answer is Google. Memije and Bond are co-owners of Toronto-based AccuServ Heating and Air Conditioning. But other businesses

Heat pumps hybrid heat
Article Heat PumpsHeating

Hybrid heat: One way to reduce costs

February 23, 2018 Ian McTeer

I found this definition of a hybrid heat system, sometimes called a “dual-fuel system” in Wikipedia: “a hybrid heat system reacts to changing temperatures and automatically adjusts to the most efficient energy saving method available to heat or cool a

Article ControlsCoolingEngineeringForced AirGeothermalGreen TechnologyHPAC GeneralHVAC SystemsHydronicsPlumbingRefrigerationSolar

Event to host largest ever education program

December 20, 2017 by Kerry Turner

The 2018 ASHRAE Winter Conference takes place January 20-24 at the Palmer House Chicago with the co-sponsored AHR Expo being held January 22-24 at McCormick Place. The AHR Expo seminar program features over 120 sessions, including over 70 free one-

low-pressure steam,steam heating,Weil-McLain
Article EngineeringHydronics

Steam heating applications on the rise

December 19, 2017 Dave Burggren

Historically, steam has been a powerful resource for space heating in homes and commercial buildings. Steam has proven extremely effective at providing controlled, consistent heat to distribute throughout a building without the need for pumps by simply using a durable

pipe-freezing
Article HeatingHVAC SystemsPlumbing

Consider alternatives when a pipe blockage or leak occurs

December 19, 2017 HPAC Staff

Emergency pipe repair does not have to mean an entire system has to be shut down. This is music to the ears of residential and commercial customers – no more ripping out walls in search of the site of the

Article EngineeringHPAC GeneralHVAC Systems

Let’s Talk Stink

December 19, 2017 Robert Bean

Out of all the senses, the olfactory sense is one of the strongest for creating lasting impressions.i Odour memories also influence the way new smells are perceived. As a survival tool it serves as an early warning signal that something

Article Hydronics

Hydronic circuit purging: The basics

December 18, 2017 John Siegenthaler

Nearly all closed loop hydronic heating and cooling systems are supposed to be filled with water, or a mixture of water and antifreeze. The only intentional air in the system is contained in the expansion tank. The only exception to

Article HeatingHVAC Systems

Keep the Heat on with HVAC system checklist

December 18, 2017 Richard Boothman

Winter can be hard on heaters of every type, but a step-by-step approach to preventive measures and maintenance of HVAC systems will help you to prepare for the harshest season of the year. From gas supply to air movers and

Article HVAC Systems

Water, Water, Everywhere

December 15, 2017 Ian McTeer

Although I did not shoot an albatross with my crossbow, I certainly felt a bit like Samuel Coleridge’s The Rime of the Ancient Mariner as I sloshed through my backyard this summer. “Water, water, everywhere/nor any drop to drink.” I

Article Health & SafetyManagementRefrigeration

Steps to Ammonia System Safety

December 15, 2017 Dave Demma

Ammonia is a colourless gas, composed of one nitrogen molecule and three hydrogen molecules. It is produced naturally in the human body, as well as in nature (water, soil, air and so on). It has a very distinct pungent odour,

Siegenthaler,hydronic systems
Article EngineeringHydronics

Strive for perfection in hydronic system design

October 28, 2017 John Siegenthaler

We live in a world where, for the most part, theoretical ideals can only be approached rather than fully realized. For example, imagine a building with heat loss characteristics such that the rate of heat loss always matched the rate

Article Plumbing

9 Top Trends in Bathroom Design

October 27, 2017 Sebring Services

When you are involved in a bathroom renovation, you are not just creating a practical bathing space. For most people, the bathroom has become a personal sanctuary. It is not just a place to wash off the grit. It is

Article HVAC Systems

A great preventive maintenance program will partner with end users over equipment’s entire life

October 26, 2017 Jonathan Mosterd

Building automation and advancements in efficiency have exponentially increased over the last few decades, bringing about a new era in industry. With this, a whole new series of electronic devices have been integrated in large commercial buildings and in industrial

Article HPAC GeneralHVAC Systems

What you need to know about the industry workhorses

October 25, 2017 Ian McTeer

Everyone involved in HVAC and refrigeration works with electric motors almost every day. Whether designing new products, specifying equipment, installing, maintaining or repairing a variety of heating, ventilation or cooling products, an electric motor and its needs are regularly the

Article CoolingForced AirHeatingHVAC Systems

Packaged indoor air quality systems work for contractors

October 23, 2017 Aaron Engel

Cold winter months keep Canadians indoors a great deal more than their southern climate counterparts. Staying indoors longer can be detrimental to health, particularly when you consider the trend toward tighter and more energy efficient home construction mandated by recent

Article Green TechnologyHPAC GeneralPlumbing

Advancements help commercial bathrooms go greener

October 22, 2017 David Scelsi

Economic challenges. Droughts. Green initiatives. Laws and standards. It is hard to pinpoint one single reason water has risen to the forefront of the sustainability conversation in the past few years. But one thing is certain, as demand for greener

Article CoolingEngineeringHVAC SystemsRefrigeration

Contemplating a chiller replacement?

October 18, 2017 Dave Demma

When I was in high school, the cost of gasoline was seldom of concern. I drove a 1957 Chevy Bel Air, with a modified 409 engine in it, and I do not think I ever thought to check what the

Article HPAC GeneralPlumbing

How to solve water heater installation errors

October 17, 2017 Robert Waters

Installed in every building, water heaters are one of the most common mechanical appliances, with thousands installed every day in Canada. Installations are done by anyone from skilled mechanical contractors, to do-it-yourselfers, and anyone in between. In most cases a

Article ConstructionHPAC GeneralHuman ResourcesManagement

Optimize productivity and worker safety

October 1, 2017 Justin Kissinger

Using an oversized lift on indoor worksites is sometimes like attacking a mosquito with a baseball bat. It is impractical, unsafe and might do more damage than good. Low-level scissor lifts are great tools for indoor projects, such as installing

Article HPAC GeneralHuman ResourcesHVAC SystemsManagementRefrigeration

Change is in the air

September 10, 2017 Michael Power

Attendance ramped up compared to last year for the 49th-annual conference of the Heating, Refrigeration and Air Conditioning Institute of Canada (HRAI) in Quebec City. Held August 16-18, the event saw changes to the organization that included Bruce Passmore appointed