Can the type of ultraviolet light known as UV-C light kill the novel coronavirus? Manufacturers are not making that claim … yet.

The condenser is the most underrated component in an air conditioning or refrigeration system.

Very few end users fully understand the importance of properly cleaning and sanitizing their ice machines, storage bins, and dispensers. Yet the quality and safety of every beverage they serve as well as the longevity and power consumption of their equipment depends on proper maintenance.

Once restaurants started reopening, smart owners asked contractors to clean and sanitize ice machines before they were returned to service.

The Refrigeration School Inc. (RSI) in Phoenix, Arizona, in partnership with Clear Channel Outdoor, recently donated and installed an ice machine at Aimee's Animal Sanctuary in Queen Creek, Arizona, to help protect more than 100 special needs animals from severe heat.

Residential air movement and ventilation can be a challenge that requires multiple callbacks. There is a way to fix that, though.

Context can help professionals direct their attention to where duct leakage can best be addressed.

The awardees will focus on early-stage R&D projects exploring innovative technologies for drilling geothermal wells that show the ability to reduce non-drilling time, improve rates of penetration, and identify methods to accelerate the transfer of geothermal drilling and related technologies from the laboratory to the marketplace. 

As AI technology continues to advance and becomes nearly indistinguishable from a human representative, HVAC companies can use these tools to help streamline the workloads of CSRs.

As business owners start preparing their companies to withstand the increased volume of business, it’s imperative they do the same with their fleets.

Daniel Truxillo, the general manager of the Dayton, Ohio, branch of Thomas & Galbraith Heating, Cooling & Plumbing, has a long history of success in the home-services industry and got his start as an HVACR technician nearly two decades ago.

A good leak detector is a big investment and one of the more important tools a tech has on the truck. One thing that I have learned is that with leak detectors care, maintenance, and testing is a huge part of finding leaks the first time.

Since its inception, air conditioning has saved lives and driven technological innovation – take a deep dive into its transformative role.

With a double brood of cicadas forecasted to awaken, now is the time to prepare for how to deal with the mess they will leave behind and the potential damage they can do to equipment.

Thermostats are like other pieces of interactive equipment: People are thrilled by each development but move on quickly when the next feature comes along.

Not only has VRF technology been widely accepted by contractors and end users alike, virtually every major U.S. manufacturer is now offering these systems, as well.

Across seven product categories, LG’s HVAC solutions again pass AHRI's comprehensive performance certification program.

When choosing a vacuum pump, its pays to find a unit that makes oil changes convenient.

Technicians need to understand the basic electrical fundamentals and how they relate to each other in order to better troubleshoot electrical failures.

The bill significantly reduces the cost of a geothermal installation, spurs job creation, and hopes to inspire more contractors to tap into the geothermal market.

A variable speed drive (VSD) controls the speed of the high-torque, direct-drive motor for optimal fan operation.

Saving one compressor will cover the cost of a voltage monitor and then some.

Equipped with an Oilon LN30 ultra-low NOx burner and Nationwide’s Eagle PLC-based Control System, the 250 hp package boiler achieved average emissions performance of 5 ppm NOx and 0 ppm CO (corrected to 3% O₂) during third-party testing.

State and local regulations are driving new building construction as well as existing buildings to implement energy-efficient technologies in order to meet future carbon emissions reduction goals. These facilities, known as high-performance buildings, strive to deliver optimal efficiency, reliability, value, and comfort to tenants.

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.

HVAC contractors in different climates and regions all over the U.S. agree that irregular upkeep is the most problematic issue when it comes to rooftop unit failure.

Investing in the right tools will save your employees’ time and avoid delaying repairs in the rush of summer.

“It's simple. If you want to encourage women to prosper and develop, provide them with some prospering women to inspire them to develop.”

The Internet of Things is a broad term with multiple definitions, likely stemming from the different sectors of technology that IoT impacts.

Trends at this year’s AHR Expo within commercial controls and building automation were improving energy efficiency, making buildings more adaptable, streamlining workflow to make things easier for HVACR contractors, and a greater emphasis on cybersecurity and digitization.

Studies have shown potential, and real, energy savings with the use of fault detection and data analysis to guide HVAC systems.

Since more companies are putting a focus on ESG principles, the HVAC industry is positioned to turn those goals, into a reality.

To meet the ambitious environmental goals being proposed at all levels of government, residential air-to-water heat pumps are emerging as a transformative solution to lower carbon emissions, enhance energy efficiency, and reduce utility bills.

As more homeowners are ditching oil heaters and moving to heat pumps, the rest of the country can learn from the cold-climate success story.

The DOE's new Rooftop Accelerator program encourages manufacturers to develop efficient commercial rooftop heat pumps for cold climates, which could reduce GHG emissions and energy costs by up to 50%.

The ACHR NEWS visited Flame Furnace in Warren, Michigan to learn how to do maintenance and basic troubleshooting on a furnace.

BlocPower, a climate technology company focused on greening America's buildings, announced a fundraising round of $150 million, including more than $24 million of Series B corporate equity led by VoLo Earth Ventures and $130 million of debt financing led by Goldman Sachs.

Posted by CISA on Mar 21

Posted by Dave Aitel via Dailydave on Sep 30

In this Episode we discuss fault tolerance based on the new book by Bob Hanmer. This is the actually the first part of the discussion, the remainder will be published in the next episode of SE Radio. We start by discussing some of the context for fault tolerant systems and the imperfect world assumption. We then discuss a number of terms we will need when discussing the fault tolerance patterns. We then discuss the fault tolerance mindset and connect fault tolerance to a number of related subject areas, such as software quality. We then discuss the shared context for the patterns that follow, among them the important observation that fault tolerance does not come for free! Finally we provide an overview over the different sections covered in the book and start the detailed discussion of the patterns by looking at the Architectural Patterns section. The next episode will discuss the remaining patterns in the book.

This is the second part of the discussion on fault tolerance with Bob Hanmer (if you didn't listen to Episode 77, which contains part one, please go back and listen now; this episode builds on that previous one!) We start by discussing a set of error detection patterns. Among are the well-known approaches such as checksums and voting. We then look at error recovery patterns, including restart, rollback or roll forward. The next section looks at error mitigation patterns, which include shedding load and doing fresh work before stale. The last patterns section then looks at fault treatment patterns. We conclude the episode with a small discussion about how to design systems using (these and other) patterns, and with some thoughts on why actually wrote the book.

In this episode Martin talks with Chris Grindstaff about the fundamentals of performance engineering. The episode discusses when and how to work on performance of client- and server-side systems, what you should take into account during development to avoid performance issues, typical situations that cause performance problems, and some common pitfalls when analysing performance.

Senior performance architect and author of *Systems Performance* Brendan Gregg talks with Robert Blumen about systems performance: how the hardware and OS layers affect application behavior. The discussion covers the scope of systems performance, systems performance in the software life cycle, the role of performance analysis in architecture, methodologies for solving performance problems, dynamic tracing and tracing tools such as DTrace, the disk and file subsystems, the CPU and memory subsystems, and the challenges virtualization poses for performance analysts.

Jeff Meyerson talks with Frances Perry about Apache Beam, a unified batch and stream processing model. Topics include a history of batch and stream processing, from MapReduce to the Lambda Architecture to the more recent Dataflow model, originally defined in a Google paper. Dataflow overcomes the problem of event time skew by using watermarks and other methods discussed between Jeff and Frances. Apache Beam defines a way for users to define their pipelines in a way that is agnostic of the underlying execution engine, similar to how SQL provides a unified language for databases. This seeks to solve the churn and repeated work that has occurred in the rapidly evolving stream processing ecosystem.

Felienne interviews Zachary Burt about freelancing as a career option. How does freelancing differ from employment? How to do personal marketing and sales? How to find a work-life balance when you are self-employed? We also cover practical tips like deciding on an hourly rate and managing demanding customers.

Kirk Pepperdine talks with Diomidis Spinellis about performance optimization. Topics include development practices, tools, as well as the role of software architecture, programming languages, algorithms, and hardware advances.

Guest Daniel Corbett discusses how to scale your application with the help of load balancing. Hear details on HAProxy and the load balancing ecosystem as a whole.

Simon Riggs, founder and CTO of 2nd Quadrant, discusses the advanced features of the Postgres database, that allow developers to focus on applications whilst the database does the heavy lifting of handling large and diverse quantities of data.

Michael Ashburne and Maxwell Huffman discuss Quality Assurance with Jeremy Jung.

Jessi Ashdown and Uri Gilad, authors of the book "Data Governance: The Definitive Guide," discuss what data governance entails, why it's important, and how it can be implemented. Host Akshay Manchale speaks with them about why data governance...