With cost reduction, sustainability enablement, increased comfort and performance benefits, VRF systems allow commercial buildings to gain a competitive advantage by reducing their carbon footprint and providing custom comfort to occupants.

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

This e-book includes a summary of sustainable HVAC developments, in particular of heat pumps and refrigerant changes to address climate change.

Industry experts are telling contractors to stay informed and get involved with the new regulations that are likely to impact everyone this coming year

As heat pump technology advances and begins its march into colder climates, industry experts are expecting rooftop units to continue to gain popularity in both new construction and retrofits.

Quilt, a newly launched company, has introduced a ductless heat pump that they say simplifies the installation and rebate process, while offering transparent pricing.

The startup, Pascal, plans to build a better heat pump based on solid refrigerants that will deliver higher efficiencies at lower costs, while eliminating all refrigerant emissions.”

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.

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.

“(I’m Your) Heat Pump” is a soft, funky, R&B love song told from the perspective of a heat pump that depicts just what a heat pump can provide to its users.

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%.

With “heat pump” and “incentives” almost being synonymous at this point, contractors need to understand the basics to ensure customers are receiving the benefits.

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.

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.

If contractors in colder climates focus on educating their customers on what new higher-efficiency furnaces bring to the table, often times the furnaces will sell themselves.

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.

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

The decision is a win for the California Restaurant Association, which challenged the ban that took effect in 2020. The city has not decided whether to appeal.

Residential gas furnaces must all have a minimum AFUE of 95% beginning in five years. Some in the HVAC industry say the new Department of Energy rule will ultimately hurt homeowners.

This winter, HVAC contractors might be dealing with a wetter winter than years past, coupled with more snowfall than maybe most people would like.

The biggest tip is that combustion analysis should be the first and last thing completed during any heating appliance repair.

Using water to transfer heat energy into the home can minimize or even eliminate the issues of dry air and loud operation.

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

A homeowner in Pickering, Ontario works with an experienced HVAC pro to improve comfort, efficiency, and energy savings with a high-efficiency hydronic forced-air furnace upgrade.

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In this Episode, Alexander and Markus talk about scripting languages. Topics include the definition of what a scripting language is, typical usage scenarios, performance issues, programming styles and IDE support. In later Episodes we will talk about more specific topics, such as dynamic typing, reflection, functional programming as well as specific languages such as Ruby.

This week, Arno and Markus take a look at error handling at the architectural level. They discuss the different kinds of errors, the groups of people who need to know about them and proven high-level approaches. Later episodes will investigate more technical aspects of error handling, such as idioms for using exceptions or a discussion of checked vs. unchecked exceptions.

Eric Evans is the author of the well known Domain-Driven Design book. In his day job he works as a consultant and coach for his own company, Domain Language. In this interview, Eric talks about the essential building blocks of domain-driven design as well as about a set of best practices on how to address complex projects. In a third part, he elaborates on the relationship of domain-driven design and MDSD/MDA.

This Episode as well as the next one take a look at remoting infrastructures such as CORBA, .NET Remoting or Webservices. In this first part we will take a look at why remote communication is necessary in the first place, what remoting middleware can do for you as well as which other middleware technologies exist in addition to OO-RPC systems, such as messaging middleware. Finally, we conclude with a brief overview of what the broker pattern can do for us in the context of remoting middleware.

This episode provides a hands-on guided tour through a simple model-driven software project. It is based on an actual code sample (see link below) and takes a look at the typical steps of real-life code generation: prototypical implementation, defining the metamodel, reading a model into a metamodel instance, writing templates and validating the model. The example for the episode uses openArchitectureWare as a generator environment, but the overall approach is tool independent. This episode is the first in a new category "code/technology" that discusses technical concepts based on actual code. Please give feedback whether you find this format useful or not.

This is a short episode that outlines the upcoming episodes and interviews, as well as reports on some listener feedback.

In this episode Michael and our guest Prashant Jain talk about patterns for resource management. Efficient management of resources is critical in the execution of any kind of software. Ranging from embedded software in a mobile device to software in a large enterprise server, it is important that the resources, such as memory, threads, file handles, or network connections, are managed efficiently to allow the systems to function properly and effectively. Michael and Prashant discuss various patterns, such as Lazy Acquisition, Caching, Leasing and Evictor and explain when, why, and how to apply them for effective resource management.