Guide to refrigerant regulation and policyJanuary 21, 2020 John Sheff and Dean Groff
The HVAC/R industry is working to make sure the transition to low global warming potential (GWP) refrigerant goes as smoothly as possible.
Prompt Payment and a proper invoiceJanuary 17, 2020 Catherine DiMarco
What all parties to a construction project need to know going forward in Ontario.
Going hybrid for heating efficienciesJanuary 14, 2020 John Miller
Consider the benefits of combining a non-condensing with a high-efficiency condensing boiler to get the best of both technologies in commercial/institutional heating applications.
Variable speed ‘shuttle’ pumps for boiler protectionJanuary 7, 2020 John Siegenthaler
Introducing a thermal clutch to protect a boiler from sustained flue gas condensation.
Never take drainage for grantedJanuary 5, 2020 Steve Goldie
Using the right tools will ease the clearing of blocked drains, and you never know what you’ll find.
Thermostatic expansion valve troubleshootingDecember 23, 2019 Jeffery Staub
Often misdiagnosed, take a system-wide approach when searching for root cause problems with AC and heat pump systems.
HVAC/R system troubleshootingDecember 17, 2019 Dave Demma
Take a logical and systematic approach to determining the final cause of equipment failure, and then take it a step further to determine the actual root cause.
The Agility of IoTDecember 17, 2019 Megan Hoegler
Smart technology developed by PCL Construction and Microsoft is simplifying tradespeople and developers’ jobs through crisis prevention and cost savings.
Top five new residential gas furnace testsDecember 11, 2019 Ian McTeer
“We owe it to our customers and to the environment to be sure that newly installed gas appliances will operate at peak efficiency.”
Bird’s Eye ViewNovember 4, 2019 by Jillian Morgan
The costly consequences of falls at heights demand a culture shift.
Remote technologies offer a win-win for customers and contractorsNovember 1, 2019 George Tsintzouras
Much like GPS or smart thermostats, remote A/C diagnostics and air conditioning monitoring systems belong in every technician’s truck.
‘They really hate us:’ New prompt payment rules may help mend relationship between GC’s, subtradesOctober 29, 2019 David Kennedy
“It’s not dislike, it’s not that they’re upset– they really hate us.”
Sealing Building EnvelopesOctober 28, 2019 by Jillian Morgan
Blower door testing offers opportunity for contractors.
An Untapped Energy Savings OpportunityOctober 24, 2019 Steven Graves
The return on investment from re-staging with an active sensing system can be as low as 12 months.
Enhancing facility safety with integrated HVAC controlsOctober 23, 2019 Michael Hugh
HVAC systems are one example of a foundational building component business owners and facility directors recognize as a critical part of an overall connected safety strategy.
Within ReachOctober 21, 2019 by Jillian Morgan
Mechanical systems find a place in 3D printed structures
The Oldest TechnologyOctober 18, 2019 Ian McTeer
Super insulation combined with zoned radiant heating has the potential to push fossil fuel heating into obsolescence.
High-performance Design Matches High-performance AthleticsOctober 16, 2019 Ralph Kittler
World-class sports facility presents unique IAQ and air distribution issues.
Dealing with the Products of Combustion Part IIOctober 15, 2019 Robert Waters
Dealing with liquid condensate must be done properly to avoid damage to the building, problems with appliance operation and angry customers.
Benefits and Advantages of Thermostatic Expansion ValvesOctober 15, 2019 Jeffrey Staub
TXVs are one of the most common type of adjustable orifice throttling devices in air conditioning and refrigeration systems worldwide. But how do TXVs compare to other throttling devices?
Hydraulic DietingOctober 11, 2019 John Siegenthaler
Think about reducing head loss to reduce the kilowatts per hour of electrical energy required to operate the system.
Best practices for maintaining water flow in plumbing supply systemsSeptember 3, 2019 David Desjardins
Minimizing bacteria growth in plumbing supply systems has become increasingly important in the plumbing industry in recent years. This is done largely through the control of temperature and flow maintenance. Plumbing engineers, installers and facility operators are particularly concerned with…
Tips on major boiler retrofit optionsAugust 28, 2019 Rakesh Zala
One-third of a facility’s energy bill stems from the boiler room, and system inefficiency just adds to high energy costs. If replacing a boiler is not an option due to budget constraints, retrofitting an old boiler is one way to…
Top ten tips to getting paidAugust 27, 2019 Dan Leduc
The attention to prompt payment legislation at the federal and provincial level proves the ongoing and entrenched knowledge that the construction industry is premised on cash flow and therefore capitalization is, if not the primary, at least one of the…
IoT permeates market, contractors pushed to get on boardAugust 26, 2019 Curtis Bennett
I literally remember hearing that 9600 baud modem squeal for the very first time. Reerascheeeram, yes that is how you actually spell it, so do not try to look it up. It was weird – I thought why the heck…
How to select heat transfer surfacesAugust 26, 2019 Dave Demma
There are many textbook definitions for the term refrigeration, but one of the most straight forward and easy to understand definitions is as follows: “the achievement of a temperature below that of the immediate surroundings.” In this article, when the…
Dealing with the products of combustion: Part 1August 26, 2019 Rob Waters
Contractors who install gas-fired condensing boilers know that dealing with the products of combustion is a big challenge when installing these appliances. Flue gases exiting the appliance are laden with moisture, and liquid condensing from the combustion chamber and vent…
Factors to consider when specifying boilersAugust 23, 2019 John Miller
Whether for a single-family home, large-scale apartment complex, or commercial or industrial facility, building owners, facility managers, engineers and contractors seek boiler systems that meet specification requirements, installation ease, serviceability, reliability, lower operating costs and higher performance. Once these major…
Think ahead: What will hydronic systems look like in 25 years?August 23, 2019 John Siegenthaler
Although I have worked with hydronic heating for four decades and designed systems around just about every possible heat source, I would be hard pressed to predict what might be available as hydronic heat sources 25 years from now. Fifty…
Online reviews are the new word of mouth for contractorsAugust 21, 2019 Jillian Morgan
For mechanical contractors building their digital presence, online reviews are unavoidable. The potential customers searching for HVAC and plumbing contractors can be quickly enticed – or thwarted – by star rankings on websites such as Google, Yelp and Facebook. Positive…