In the sixth installment of this series, we ask if A2L refrigerants are as flammable as propane or hydrocarbons.

The EERS required Indiana’s electric utilities to cut energy delivery by an average of 2 percent annually, as well as providing home energy assessments, low-income weatherization, and efficiency rebates for businesses, homeowners, and schools. In 2014, Indiana legislature passed SEA 340 to cancel the EERS. Then Gov. Mike Pence did not veto or sign the bill, so it became law, and Indiana became the first state to repeal its energy efficiency standard.

HB 738, introduced Oct. 4 by Rep. Niraj Antani (R-Miamisburg), requires the Ohio Facilities Construction Commission (OFCC) and the Department of Education (ODE) to study the status of school buildings regarding air conditioning, accessibility, and school safety.

End users are looking for more from their systems than just reliable cooling; they also want sustainable equipment that features better energy efficiency and low-GWP solutions. Several compressor manufacturers have happily obliged.

There has been debate on the transition from traditional a/c units to the smaller ones, or to find other worthy alternatives.

With finite resources, operators everywhere should be spending smartly to enhance the “green” sustainability of their operation.

A federal measure designed to improve IAQ, particularly in schools and child-care facilities, is winning support from HVAC industry trade groups. 

As extreme heat becomes more common, more of a spotlight is being put on worker safety, and a new app may be able to help.

Contractors discuss the various payment options for customers.

Dynamic Systems Inc.’s l Stand-alone Mobile Inventory Application (SMIBA) uses barcodes to manage inventory and upload the information to any accounting system.

The benefits of building information modeling (BIM) and other technology advancements that allow the exchange of information on design and construction projects, including improving labor productivity and reducing costs for construction companies, are just the beginning of what can be achieved, according to a new study.

Acco Engineered Systems announced that it will join forces with All Area Plumbing, a regional design-build plumbing contractor serving Southern California. Adding All Area Plumbing’s capabilities, Acco said it will strengthen its position as one of the largest mechanical contractors in the western United States.

eSUB Construction Software has announced a new product integration, bringing together PlanGrid’s field productivity application with eSUB’s project management and document control platform for collaboration and productivity in the field.

Vertical Mechanical Group is a full-service HVAC and plumbing contractor that specializes in large-scale commercial projects such as hotels and multi-family residential buildings.

Contractors focused primarily on service, maintenance, and repair should continue to see steady, healthy growth, even in a slowing economic environment.

Designed for cooling work areas, this fan has a direct-drive motor for quiet and efficient operation.

AMCA will launch the Air System Engineering and Technology (ASET) series of free webinars on topics impacting air systems in buildings.

Nothing lasts forever. This old adage holds true, especially when it comes to HVAC coils.

The York^® Mission Critical Direct Evaporative Cooling (DEC) Air Handling Units (AHUs) from Johnson Controls Inc. are designed to meet data centers’ specific needs.

Some savvy investors realize the greatest potential for helping the environment and getting a good return on investment comes from the HVAC industry.

The new comfort solution reduces energy use by 50 percent by using water more efficiently than the legacy system.

Wendy Abbagliato of Chester, New York, was promoted to office manager at Nebrasky Plumbing, Heating & Cooling, an award-winning Hudson Valley business. Abbagliato will be responsible for planning, directing, and overseeing the office operations for the company.

With modern technology, HVAC contractors can leave paperwork behind, and instead share information in real-time.

At a booth thick with traffic at the AHR Expo’s, commercial product manager Schlegel talked about Johnson Controls’ new YORK Sun Choice rooftop unit.

Sustainability is core to the thinking at Rheem and was a common theme throughout the AHR Expo.

Grocers are becoming more vigilant in keeping their refrigeration equipment as clean as possible.

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

The rapid expansion of data centers has raised concerns about their massive energy use and carbon footprint. However, adopting sustainable HVAC solutions can reduce a data center’s environmental impact and energy consumption.

Lennox received a 2023 Green Builder Sustainable Product of the Year recognition.

Thermostats have come a long way since the first thermostat hit the market. So, it makes sense that consumers demand more from the technology’s capabilities than ever before.

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.

In early July, the Biden administration proposed a rule that addresses excessive heat in the workplace, as tens of millions of them were under heat advisories — the nation’s No. 1 weather-related cause of death.

Most of the rest of the world has relied on ductless mini-split systems for their heating and cooling needs for decades, but that has not been the case in the U.S. That may be changing with the advent of ducted mini-split systems.

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.

Panasonic Corp. of North America is honing in on its focus to make it easier for both residential and commercial building owners to control the temperature and comfort level within the space. The company hit its targets with the introduction of two new products — the ECONAVI air conditioner and the Variable Refrigerant Flow (VRF) Smart Connectivity Controller.

Honeywell announced the launch of Honeywell Forge Energy Optimization, a cloud-based, closed-loop, machine learning solution.

Aaon’s focus on serviceability and performance helped the WH Series earn gold in The NEWS’ 2017 Dealer Design Awards HVAC Light Commercial Equipment category.

BIM technology has proven to be highly expedient for several HVAC plans, especially in terms of cost efficiency, time optimization, and effective planning.

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.

Posted by Gordon Fyodor Lyon on Sep 01

Purdue University researchers have designed a predictive thermostat for heat pumps that has been shown to significantly reduce electricity use.

Posted by Ariel Otilibili on Sep 17

Posted by Ariel Otilibili on Sep 17

Posted by Dave Aitel via Dailydave on Oct 10

Posted by Dave Aitel via Dailydave on Nov 02

This episode is an introduction to user interface design with Joachim Machate of UID. We talk about the importance of user interface design, about its relationship to the overall software engineering process, as well as about UID's process for systematic user interface design.

This is a conversation with Ola Bini on his experimental language Ioke. We cover the idea behind the Ioke experiment as well as important language concepts and the thinking behind them.

Guest Udi Dahan talks with host Robert Blumen about the CQRS (command query responsibility segregation) architectural pattern. The discussion begins with a review of the command pattern. Then a high-level overview of CQRS, which consists of a separation of a command processing subsystem that updates a write model from one or more distinct and separate, […]

Sven Johann talks with Bill Curtis about Software Quality. They discuss examples of failed systems like Obama Care; the role of architecture; move an org from chaos to innovation; relation between Lean, quality improvement and CMM; Team Software Process.

Björn Rabenstein discusses the field of Site Reliability Engineering (SRE) with host Robert Blumen. The term SRE has recently emerged to mean Google's approach to DevOps. The publication of Google's book on SRE has brought many of their practices into more public discussion. The interview covers: what is distinct about SRE versus devops; the SRE focus on development of operational software to minimize manual tasks; the emphasis on reliability; Dickerson's hierarchy of reliability; how reliability can be measured; is there such a thing as too much reliability?; can Google's approach to SRE be applied outside of Google?; Björn's experience in applying SRE to Soundcloud - what worked and what did not; how can engineers best apply SRE to their organizational situation?; the importance of monitoring; monitoring and alerting; being on call, responding to incidents; the importance of documentation for responding to problems; they wrap up with a discussion of why people from non-computer science backgrounds are often found in devops and SRE.