Refrigeration systems can become restricted in both their high and low sides for a variety of reasons.

A duct system is the part of an HVAC system that most homeowners don’t consider, yet it determines how well their equipment works.

 “Technology’s not going to solve everything, but you need to know how to use it,” Nelson Valderrama, CEO of Intuilize, told HVACR distribution professionals during the recent Heating, Air-conditioning & Refrigeration Distributors International conference.

It’s been said that technology takes longer to arrive than expected, but once it does, adoption occurs more quickly than expected as well.

Famous Supply is planning a December 17 ribbon-cutting for its new 354,000-square-foot distribution center in Maple Heights, Ohio.

The annual sales growth for the 12 months through September 2024 is an increase of 2.3%. 

Philip Laiche exemplifies the same values that make Malco great: dedication to excellent customer service and going above and beyond to ensure contractors have the Malco tools they need to get the jobs done, a press release from Malco Tools Inc. said.

Before you can fix a leak, you need to find it. That’s where leak detectors come in.

According to the Environmental Protection Agency (EPA), a typical food retail store leaks an estimated 25 percent of refrigerant, or approximately 1,000 pounds, annually.

Andy Kelso was named COO; Shane Lawrence, CFO; Brinnon Williams, vice president of residential business; and David Archer, vice president of commercial business.

Constellation’s Offsite Renewables Plus (CORe+) retail power product, combined with Johnson Controls’ commitment to renewables, is supporting the development of two new Welcome Solar renewable energy facilities.

Taking home the golden honors in the Testing and Monitoring category of this year’s Dealer Design Awards is the T6 Electrical Tester from Fluke Corp. The product, first introduced to the marketplace in September 2017, went through years of research before launching.

RIDGID will select six winners for a VIP experience at its global headquarters.

Across the country, school administrators are realizing the importance of good IAQ and a comfortable indoor environment, which both contribute significantly to student success. 

With more than a trillion dollars designated from the Infrastructure Investment and Jobs Act (IIJA) starting to hit the wider economic field, HVAC contractors and the utility industry should be aware of how to cash in.

Catch up on the latest headlines in our NEWSRoom video series.

This Michigan home is proof that even when achieving high-level green building standards, more can be done to improve sustainability.

When it comes to smart thermostats, USACD walks the walk and talks the talk.

ACHR NEWS launches new tools to help readers stay up-to-date on the latest trends.

A visit to an ASHRAE event 30-plus years ago introduced David Heckler to VRF technology, and the distributor was won over. VRF systems now make up about half of his company’s business.

Scandinavian green energy startup Aira plans to offer a 10-year service guarantee and a monthly fee that includes installation, maintenance.

Variable-speed heat pumps, which dominate the heat pump market in many countries, are getting more attention in the U.S. The NEWS asked several manufacturers about the benefits of the technology.

All-electric options have come a long way since their inception, and there’s never been a better time to get on board.

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

The equipment in this month’s troubleshooting problem is an electric furnace that has been in service for at least ten years and has no service history.

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In this Episode we talked about the new POSA 4 book which has recently been published. We talk to two of the authors, Kevlin Henney and Frank Buschmann (the third author, Doug Schmidt was not available - and he had also been on the podcast a couple of times :-)). The book contains a pattern language for distributed systems. It contains 114 patterns that had been published before by many different other authors. The patterns have been rewritten to form a consistent language. We basically talked through the different sections of the book, which gives a really good overview over the challenges and the solutions of building distributed systems. These sections include From Mud to Structure, Distribution Infrastructure, Event Demultiplexing and Dispatching, Interface Partitioning, Component Patitioning, Application Contrl, Concurrency, Synchronization, Object Interaction, Adaptazion and Extension, Modal Behaviour, Resource Management and finally, Database Access. The book references several other previous works (as listed below). Interestingly, many of these referenced works and authors have also been discussed previously on the podcast. Here are the back references:

• Domain Driven Design, Eric Evans
• Messaging Patterns, Gregor Hohpe
• POSA 2 Patterns, Doug Schmidt
• Concurrency: Part 1, Part 2, Part 3 and the interview with Goetz and Holmes
• Remoting Patterns Part 1 and Part 2
• POSA3, Resource Management

In this episode Michael interviews one of our regular listeners: Petri Ahonen. Petri introduces Software Configuration Management by defining key terms and describing relevant concepts.

In this episode we talk with Rini van Solingen about scrum and agile software development in distributed settings.

Leslie Lamport won a Turing Award in 2013 for his work in distributed and concurrent systems. He also designed the document preparation tool LaTex. Leslie is employed by Microsoft Research, and has recently been working with TLA+, a language that is useful for specifying concurrent systems from a high level. The interview begins with a […]

Stefan Tilkov talks to Camille Fournier about the challenges developers face when building distributed systems, whether the can avoid building them at all, and what changes occur once they do.

Donny Nadolny of PagerDuty joins Robert Blumen to tell the story of debugging an issue that PagerDuty encountered when they set up a Zookeeper cluster that spanned across two geographically separated datacenters in different regions.

James Cowling of Dropbox tells Robert Blumen about their massive migration from Amazon’s S3 to their own distributed storage system.

Ben Sigelman CEO of LightStep and co-author of the OpenTracing standard discusses distributed tracing, a form of event-driven observability for debugging distributed systems, understanding latency outlyers, and delivering "white box" analytics.

The use of distributed and remote software teams have grown dramatically in the past five years, presenting new challenges for managers and engineers alike. Bryan Helmig talks about the best practices his company, Zapier, uses to manage remote software...

Heidi Howard, a researcher in the field of distributed systems, discusses distributed consensus. Heidi explains when we need it, when we don't need and the algorithms we use to achieve it.

Torin Sandall of Styra and Open Policy Agent discussed OPA and policy engines and how they can benefit software projects security and compliance. Host Justin Beyer spoke with Sandall about the benefits of removing authorization logic from your application...

Trisha Gee and Kevlin Henney of 97 things every Java developer should know discusses their book, which is a collection of essays by different developers covering the most important things to know. Host Felienne spoke withGee and Henney about all things...

L Peter Deutsch of Aladdin Enterprises and formerly of Sun Microsystems joined host Jeff Doolittle to discuss the fallacies of distributed computing. Peter retold the history and origin of the fallacies and how they have been addressed over...

Davide Bedine, a cloud solution architect at Microsoft and professional Dapr enthusiast joined host Jeff Doolittle to discuss his book, Practical Microservices with Dapr and .NET. Dapr, the Distributed Application Runtime, simplifies cloud-native...

Chris Riccomini and Dmitriy Ryaboy discuss their book, The Missing Readme, which is intended to be the missing manual for new software engineers. Felienne spoke with Riccomini and Ryaboy about a range of topics that new software engineers might not have..

Omer Katz, a software consultant and core contributor to the Celery discusses the Celery task processing framework with host Nikhil Krishna. We discuss in depth, the Celery task processing framework, it's architecture and the underlying messaging...

Nikhil Krishna speaks with Dietrich Ayala about IPFS in depth. They cover what it is, how it works in detail and how one could leverage IPFS and libp2p in one's own application or to host one's content. The discussion goes into the IPFS ecosystem...

Sugu Sougoumarane discusses how to face the challenges of horizontally scaling MySQL databases through the Vitess distribution engine and Planetscale, a service built on top of Vitess. The journey began with the growing pains of scale at YouTube around the time of Google’s acquisition of the video service. This episode explores ideas about topology management, sharding, Paxos, connection pooling, and how Vitess handles large transactions while abstracting complexity from the application layer.

In this episode, Ori Mankali, senior VP of engineering at cloud security startup Akeyless, speaks with SE Radio’s Nikhil Krishna about secrets management and the innovative use of distributed fragment cryptography (DFC). In the context of enterprise IT, 'secrets’ are crucial for authentication in providing access to internal applications and services. Ori describes the unique challenges of managing these sensitive data, particularly given the complexities of doing so on a large scale in substantial organizations. They discuss the necessity for a secure system for managing secrets, highlighting key features such as access policies, audit capabilities, and visualization tools. Ori introduces the concept of distributed fragment cryptography, which boosts security by ensuring that the entire secret is never known to any single entity. The episode explores encryption and decryption and the importance of key rotation, as they consider the challenges and potential solutions in secrets management.