The manufacturers provided all of the data included in the product grid as well as the photo feature. Therefore, any questions should be directed to them via the contact information provided in the photo feature section.

This heating showcase provides in-depth information on the features of each individual unit and also includes technical support information from the manufacturer. The manufacturers provided all of the data included in the product grid as well as in the photo feature; therefore, any questions should be directed to them via the contact information provided in the photo feature section.

Each year, The NEWS spotlights the industry’s latest commercial heating products. The manufacturers provided us with a brief description of features included with each product.

While many educational sessions were presented at the Air-Conditioning, Heating, and Refrigeration (AHR) Expo, perhaps the most popular was the course on global HVAC trends offered by the Building Services Research and Information Association (BSRIA).

Just like bees return to the hive every day for sunset, Yellow Jacket has habitually returned to the AHR Expo every January for the past 45 years.

Summer cooling season is in full gear, which means that both technicians and their tools are being kept extremely busy.

Technological developments are consistently improving the tools technicians have to use.

People are still pinching pennies and choosing repairs, but there are ways for contractors to sell new equipment, even when it’s more expensive.

Commercial heating equipment manufacturers are rolling out new systems that are energy efficient, as well as service friendly for contractors.

Old homes and old HVAC systems bring the potential for asbestos — here’s what HVAC contractors and duct cleaning professionals need to know if they run into it on a jobsite.

Low public awareness of incentives that can subsidize residential HVAC purchases means contractors have the opportunity to educate and position themselves as trusted advisors, marketing experts say.

Whether you are thinking about exploring strategic alternatives for your business or simply want to take it to the next level, private equity investors and strategic buyers are looking for tech-enabled companies.

Building automation systems can boost heating and cooling efficiency by more than 20%.

For residential HVAC contractors, smart homes are a fast-growing market that offers opportunity for profit.

What is the best approach to providing a holistic smart home experience for consumers?

If zoning technology was available before the pandemic, why has it taken so long for it to become an option that homeowners now consider?

For more HVAC contractors to sell zoning systems, they have to understand the benefits, challenges, know how to approach customers to even be able to sell it, and then comes the install.

A recent survey shows homeowners are unfamiliar with what an HVAC heat pump can accomplish.

Only 4% of homeowners know modern heat pumps can heat down to -4°F. That’s a huge opportunity for HVAC contractors to step in and be the experts.

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.

There are numerous factors for this trend, including energy efficiency, government incentives, and technology improvement. But HVAC contractors are still the boots on the ground in this electrification mission.

In this showcase, The ACHR NEWS introduces the latest cooling equipment available for the upcoming summer season in order to help contractors distinguish between brands.

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

Every year, The ACHR NEWS introduces the latest heating equipment that is available for the upcoming winter season.

Any furnace with induced draft combustion may occasionally exhibit unburned gas odor near the furnace in the off cycle.

Every year, The ACHR NEWS introduces the latest heating equipment that is available for the upcoming winter season.

Cold climate heat pumps were on full display on the AHR show floor and manufacturers were eager to share their progress reports in the Department of Energy’s CCHP Challenge.

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.

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

The residential heating showcase is designed to help HVAC contractors learn about the new heating equipment that is available for the upcoming cooler months.

Taking a look at the major concerns around replacing an 80% furnace with a high-efficiency one such as venting requirements, drilling extra holes, and financial costs.

For technicians who run across older furnaces where air conditioners were later added, it pays to know how a fan center operates.

The residential heating showcase is designed to help HVAC contractors learn about the new heating equipment that is available for the upcoming cooler months.

Posted by Ciro Santilli OurBigBook via dev on Sep 17

Posted by Dave Aitel via Dailydave on Nov 02

This episode is a conversation with Bruce Powel Douglass on real time systems. We started by discussing what real time software is, and explored the difference between hard and soft real time. We then looked at different scheduling strategies, and the meaning of terms like urgency and importance in the context of scheduling. Next was a discussion of typical architectural styles for real time systems and how architectures are described in this context. This led us to a discussion about the importance of modeling, formalisms and languages as well as the role of automatic code generation from those models. We then looked at how to model QoS aspects and the role of SysML for modeling real time systems. We then had a brief look at which programming languages are used these days for real time systems and the role of static analysis to determine various properties of those programs in advance. The last part of the discussion focused on some best practices for building real time systems, the challenges in distributed real time systems and how real time systems can be tested effectively.

We discuss characteristics and performance properties of modern games and outline the challenges for software development.

In this episode, Markus talk with Martin Fowler and Rebecca Parsons about domain-specific languages.

Recording Venue: Skype Guest: Martin Fowler and Pramod Sadalage In this episode, we talk with Pramod Sadalage and Martin Fowler about database evolution and agile database development. We discuss the basic challenges for working with a database in an agile development culture and how to include database design and most of all, database evolution, in […]

Recording Venue: Skype Guest: Eric Lubow Eric Lubow and Robert discuss polyglot persistence, a term used to describe systems that incorporate multiple specialized persistent stores rather than a single general-purpose database.  Eric provides insights into the forces driving this trend:  including diverse data usage patterns, low latency, and increasing volumes of data.  The emergence of […]

Recording Venue: WebEx Guest: Wil van der Aalst Robert Blumen interviews Professor Wil van der Aalst of the Technical University of Eindhoven, one of the world’s leading researchers in business process management and workflow systems. Professor van der Aalst leads off with an overview of the main concepts in the field business processes, business process […]

Johannes talks with Rachel Laycock and Max Lincoln from ThoughtWorks about continuous delivery on Windows. The outline includes: introduction to continuous delivery; continuous integration; DevOps and ChatOps; decisions to be taken when implementing continuous delivery on windows; build tools on windows; packaging and deploy on windows; infrastructure automation and infrastructure as code with chef, puppet […]

John Wilkes from Google talks with Charles Anderson about managing large clusters of machines. The discussion starts with Borg, Google’s internal cluster management program. John discusses what Borg does and what it provides to programmers and system administrators. He also describes Kubernetes, an open-source cluster management system recently developed by Google using lessons learned from Borg, Mesos, and Omega

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

Edaena Salinas talks with Tammy Butow about Chaos Engineering. Tammy is a Principal Site Reliability Engineer at Gremlin. The discussion covers: how Chaos Engineering emerged, the types of chaos that can be introduced to a system, and how to structure...

Jeremy Jung talks with David Calavera about zero-downtime migrations and rollbacks with Kubernetes. In this episode we define migrations, rollbacks, and discuss how Netlify was able to migrate to Kubernetes and roll back off of it multiple times without impacting their users. David explains how developers can run old and new systems simultaneously, the importance of defining errors in your system, and when to apply fixes vs rolling back. We also discuss their decision to move to Kubernetes, and the benefits they received.

Bernd Rücker, who has contributed to multiple open source workflow management projects, discusses orchestrating microservices with workflow management.  As distributed systems evolve into a family of microservices that must handle long-running stateful processes with time-dependent actions, events, multiple paths through the system, and complex rollbacks, the workflow management model provides a way to ensure clear modeling, correctness, and separation of concerns.   Rücker recommends a federated model in which each microservice is paired with its own workflow to handle retries and other policies and failure modes around that service.  Robert Blumen spoke with Rücker about microservice architecture, event-driven systems, long-running stateful processes versus synchronous request/response, event handling, time-outs, and handling exceptional conditions with compensating transactions. Rücker compares the choreography versus orchestration models for collaboration and discusses why orchestration provides a better separation of concerns.  The discussion delves into the implementation of workflow management systems including persistence, scaling, event handling, timers and scheduling, and similarities to CQRS.  The discussion wraps up with monitoring and visualization.

Howard Chu, CTO of Symas Corp and chief architect of the OpenLDAP Project, discusses the key technical features of the Lightning Memory-mapped Database (LMDB) that make it one of the fastest, most efficient and safest embedded data stores in the world.