CodeProject

ELT Calendar is the source for information on workshops, seminars and conferences for language teachers in every part of Japan. There are 27 upcoming events currently listed on the calendar.

A question I’m frequently asked is, where do you start when improving a poorly performing duct system? Do you tear it out and start over again, or is there an easier way? The good news is, there is a simple, logical pattern you can follow to optimize a duct system.

The air duct calculator, or “ductulator,” is a commonly used tool for designing and installing duct systems. Unfortunately, many designers and technicians receive limited instructions on its correct use.

As common as the duct leakage problem is, it’s also very easy to go in with less-than-adequate knowledge for solving the problem in customers’ homes due to all the possible variables in play.

Although ductwork doesn’t require quite as much maintenance as other HVAC equipment does, there are steps to be taken to ensure its longevity, safety, and efficient operation.

While exterior pollutants, such as smog and CO, may receive more attention, IAQ within a home can have serious effects on our physical and mental health, as well.

The tech who showed up to the house was probably just as surprised as I was that my dad was getting the ducts cleaned. But he saw this appointment as an opportunity, not a waste of time. He talked to my dad, found things out about him and the house. Because he spent just a few minutes with my dad, he was able to add on additional products and services. That tech turned a $375 duct cleaning job into a $1,500 IAQ solution job.

Paying attention to these 10 factors will ensure that customers get the highest possible comfort and efficiency.

Some comfort and indoor air quality issues we encounter bleed over from areas that we might be unfamiliar with. The most common are the influences of building construction, like leakage and insulation.

The National Air Duct Cleaners Association recently drew more than 500 people to a resort near Denver for its annual meeting and exposition.

Slideshow: The National Air Duct Cleaning Association annual meeting in New Orleans at the end of March delved deep into the cleaning business with a focus on keeping up the demand momentum for the service from COVID-19.

These simple guidelines will help HVAC contractors shift their business from “practitioner” to “specialist.”

Duct renovation is not a silver bullet. Instead, it’s an important piece of the overall comfort system.

Give your duct renovators purpose and help them understand why their position is valuable.

NADCA’s annual Fall Technical Conference features hands-on training during which attendees can use real-world scenarios to develop practical skills.

The key is to adjust your set point slowly and focus on progress, not perfection. Don’t try to add 100°F all at once; you’ll burn out.

It’s easy to forget that what is a regular day on the job for you is a significant event in the life of your customer.

You perform maintenance each year, but by the next maintenance visit, dirt and grime are in the equipment again. Have you ever wondered why this happens?

Offering duct renovation can be a boon to HVAC contractors, and the time to get started is now.

These additions to the components available for the i-Vu® BAS provide operators access to valve performance data.

This article will hopefully save the lives of a few TXVs and the pocketbooks of some customers.

The intelligent valve OptiPoint™ is a customized Belimo ZoneTight™ valve with enhanced MP-Bus communication.

Now available in new 1.5- and 2-inch sizes, this smart mixing valve connects through the building automation system (BAS).

With easy access to the impeller and case to remove debris, this product has an oversized, tapered bore and a self-flushing seal chamber.

Parker Sporlanls latest offerings include a rugged carrying case, off-the-shelf valves, and a simple-to-use board for refrigeration control.

This upgraded version of its AmurAct is designed for 1.5 million cycles and can withstand ambient temperatures up to 140°F.

Designed for tankless water heaters with integrated PRV and/or drain ports, this valve kit isolates the unit for servicing.

There are varying types of symptoms that can occur when a refrigeration system has an overcharge of refrigerant.

This article will explore the remote bulb and its proper placement on a system’s suction line.