Like many universities across America, the University of Cincinnati faced a major infrastructure challenge: having to operate aging central utility plants with older technology.

Much like subcooling, understanding and calculating superheat can be somewhat difficult for newbie technicians.

When the Woosh air quality monitor and smart air filter are paired with a Sensi smart thermostat, users can transform an HVAC system into an air purifier for the entire home.

OK, you’ve exhausted all of the existing air from an interior space; now how do you replace it? You bring in makeup air from another source. For the purpose of an HVAC discussion, your source will be mechanical equipment — makeup air units.

Heat-only, direct-fired, and indirect-fired makeup air units have been added to the company’s product line. 

According to the manufacturers that make equipment for schools, there are often many options available to districts looking to make those much-needed upgrades.

The unit includes a standard neoprene, vibration-isolated blower and motor for quiet operation.

Ideal for cost-conscious applications that require 100 percent outside air, the new unit from Modine provides first-rate efficiency with a 100 percent thermal efficiency (92 percent sensible), and extends airflow capability to as low as 800CFM to cover far more applications than previously offered.

The MUAA distributes tempered fresh air to provide maximum comfort to the occupants in well-ventilated homes. The heating elements modulate continuously, which allow fresh, hot air at a low cost.

Food retailers shared their concerns and experiences with refrigeration systems that use alternative refrigerants at the Food Marketing Institute’s (FMI’s) 2023 Energy & Store Development Conference.

ABC argues the rule could end up hurting legitimate contractors in the building trades, who are already strapped for workers.

In collaboration with Tropic Supply, Cooper&Hunter has gifted Daytona State College with six complete HVAC systems, considering the donation as a useful investment in the next generation. The on-campus working stations, which include units from Cooper&Hunter’s modern “Sophia Mini-Split Single Zone Series,” will give students hands-on learning opportunities with technology that is becoming increasingly popular in the U.S.

The equipment in this month’s troubleshooting situation is a split system that has only been in service for two years, but there is a lot of history — several service calls since the equipment was installed, and an on-going complaint that the system just doesn’t keep the ranch-style home comfortable.

Manufacturers and contractors are working to educate end users about the ways heat pumps work differently from traditional heat sources.

Though geothermal systems can cost several times more than traditional HVAC units, the energy savings may be substantial.

Selecting a VFD that features remote startup can decrease the number of individuals needed onsite and provide valuable safety benefits.

The pandemic has marked a turning point for an underutilized technology for infectious disease control in buildings.

The growing electricity demands being placed on the country’s century-old grid are resulting in an increased number of unexpected power outages across the U.S.

Posted by Alan Coopersmith on Nov 12

AC drives are an essential part of the HVAC marketplace, and the growth of the market looks to be exceptional over the next few years. According to MarketsandMarkets, the market is expected to grow from an estimated $15.72 billion in 2016 to $22.07 billion by 2021.

In supermarkets, where HVAC and refrigeration equipment use 50 to 60 percent of all electricity consumed, new technologies and advanced control strategies have been developed to help boost energy efficiency as well as reduce emissions.

The benefits of portables, including speedy implementation, reduced downtime, and cost-effectiveness, are continuing to gain recognition from end users. And, as end users experience these benefits and the resulting uptime, industry experts expect the portable market to continue to heat up.

There are things contractors can do to get school equipment back online and ensure it’s operating as efficiently as possible in time for the first school bell this fall.

While some contractors are willing to equip technicians with the necessary tools, others require workers to purchase their own, which can be yet another burden for someone just starting out in the field.

This product is a leave-behind HVAC analytic device that technicians can install on each unit, regardless of the brand they service.

This brief year-end tool review rounds up a handful of items that might make the work a little easier in 2021.

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Cochrane Supply & Engineering has been distributing Honeywell products since Cochrane was founded. Co-founder Don Cochrane Sr. got his start with Honeywell.

Zoning technology has experienced success in both residential and commercial applications of hot water and hydronic systems.

While the installation of heat pumps may seem to be slowing due to inflation and rising interest rates, coupled with a confusing rollout of federal funding, they are expected to pick up speed this year.

This new private-public partnership wants to quadruple heat pump installation in California over the next 6 years.

Despite the arguments regarding the practicality of heat pumps in cold climates, residents of Maine have fully embraced them.

HVAC industry representatives are pushing back on a bid by more than two dozen public interest groups for an eventual ban on new fossil-fuel-burning heating appliances.

Two major HVAC industry organizations have weighed in on a DOE proposal that would phase out noncondensing gas furnaces for consumer use beginning in about six years.

Throughout March, voters will help the staff at Peterman Brothers select four charity partner organizations for 2023.

The final rule from the U.S. Department of Energy, issued recently, requires newly manufactured indoor residential gas furnaces to be at least 95% efficient starting in December 2028, meaning furnaces made after then will have to be condensing models.

Posted by Ariel Otilibili on Sep 15

Posted by Ariel Otilibili on Sep 15

Posted by CISA on Mar 28

In this episode we discuss with Randy Shoup, Distinguished Architect at eBay, about architectural pinciples and patterns used for building the highly scalable eBay infrastructure. The discussion is structured into four main ideas: partition everything, use asynchrony everywhere, automate everything, and design the system keeping in mind that everything fails at some point in a large distributed system.

This episode is an update on the developments around the Scala language.