HVAC Contracting - Articles - Page 276

A-Gas Says ‘Time Is Running Out’ and Urges Industry to Replace R-404A

For European industry, the time to switch is now

February 8, 2016

A-Gas is urging the refrigeration industry to switch to low-global warming potential (GWP) refrigerants R-448A and R-449A before shortages of R-404A begin to bite.

Salvation Army Selects American DG Energy’s CHP Solution

Project is expected to save the Salvation Army upwards of $850,000

February 8, 2016

American DG Energy Inc. announced it has reached an agreement to provide its On-Site Utility™ combined heat and power (CHP) solution to the Salvation Army Greater New York Divisional Headquarters in New York City.

This shows a technician filling the oil filter cavity after changing the filter cartridge.

Btu Buddy 154: Frozen Oil Line on Oil Furnace

Bill Johnson

January 18, 2016

It was the first really cold day of the winter and Bob and Tim were on the way to a service call on an oil burner. The customer said that they had no heat. It was about 15°F outside so they were in a rush to get there.

Don’t Breathe Easy: The Adverse Effects of Poor IAQ

How contaminated indoor air is harming our health, businesses, schools and homes — and what can be done

Nick Agopian

January 18, 2016

What causes poor IAQ? What are the negative effects? And most importantly, what can be done to achieve cleaner indoor air? This article will attempt to shed light on these questions so we can all breathe a little easier.

Planning for New Overtime Rules

What to expect and how to prepare for the DOL’s changes to the overtime rules

Richard D. Alaniz

January 18, 2016

The U.S. Department of Labor (DOL) announced a revamping of the “white collar” exemptions test. When the changes become effective, employers can expect greater scrutiny and a further increase in wage and hour lawsuits. It is therefore important for employers to understand the upcoming changes to the overtime rules.

Bitzer two-stage reciprocating compressor

Bitzer Modifies Reciprocating Compressors for R-448A and R-449A Refrigerant

Low temperature applications now able to run with refrigerants under 1,400 GWP

Andrew Gaved

January 18, 2016

Bitzer has announced it has modified all models of its two-stage reciprocating compressors to enable them to run with R-448A and R-449A refrigerant. The refrigerants have global warming potentials (GWPs) of 1,386 and 1,397 respectively.

Alaska Aces Hockey Team’s ‘Green’ Ice Is a Winner

Sullivan Arena is second rink in the nation to use a CO2-based refrigeration system to generate its ice

January 18, 2016

The Alaska Aces, a professional hockey team in Anchorage, Alaska, and winner of three league-championship Kelly Cups, is skating on “greener” ice this season. It’s not the color of the ice that’s changed, but the effect it has on the environment and its money savings.

Troubleshooting Challenge: An Under-Performing Heat Pump

Jim Johnson

January 4, 2016

In this troubleshooting situation, you are responding to a customer’s complaint about their heat pump, and you’re not the first technician called in to solve this problem of “not keeping the home comfortable and running a lot.”

Weil-McLain SlimFit 1500 condensing boilers

Advances in Boiler Construction and Design

The boiler market has been slowly shifting to more efficient condensing units

John Kopf

January 4, 2016

Contractors, architects, engineers, and others who specify commercial and industrial boilers continually seek systems that are more cost effective, energy efficient, and environmentally friendly. The boiler industry has responded by making significant advances in both construction and design.

Outdated Computer Systems Play Havoc with the Bottom Line

Assessing technology needs can help businesses stay competitive, says tech company president

January 4, 2016

Computer technology is ever-evolving. While that’s exciting for techies, it can be a headache for business leaders, whether they are corporate executives or small business owners.