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Fabric Duct and Specialized Airflow Used to Keep Swimmers Healthy

How can an effective airflow strategy ensure quality ventilation and optimal indoor air quality, without breaking the budget?




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3 Things Are Keeping Gen Z from Joining the Trades

The report showed 61% of the Gen Z respondents said their parents haven’t spoken to them about vocational school — or told them not to consider it.




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The Role of AI in Indoor Air Quality Optimization

AI promises to revolutionize IAQ, but first, it needs to overcome several challenges, like unreliable data, incomplete automation, and gimmicky solutions that fail to deliver real value.




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Optimizing Efficiency in Your HVAC Business

Read this eBook to find out more on software solutions that help contractors reduce wasted time and cost.




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Software: Digitize, Digitize, Digitize

Since software can already do so much, manufacturers at this year’s AHR Expo focused on how to expand what can be digitized and how AI can be utilized in order to save contractor’s time and simplify the process.




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Four Ways Software Can Help With the Labor Shortage & How to Maximize It

Software can increase productivity, better manage labor, encourage retention, and keep things consistent and organized. But it’s up to HVACR contractors to choose the right software and take the proper stops to implement it.




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Trane Product Releases Aim to Help Customers Meet Decarbonization, Efficiency Goals

Trane introduces Thermal Battery™ Storage-Source Heat Pump System, Trane/Mitsubishi Electric HVRF, Versatile Axiom™ Water Source Heat Pumps, Next-Generation Precedent® Rooftop Units, and two enhanced air handlers. 




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Zonex Launches New BACnet Product for its Gen X System

At the core of the BACnetIP solution is the QuickServer gateway, developed by a third-party integrator. This BTL (BACnet Testing Laboratories) certified gateway serves as a communications bridge between the Gen X System and a customer’s building management system.




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Crowcon Detection Instruments: Flue Gas Analyzer

This professional-grade flue gas analyzer offers features tailored to HVAC professionals.




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Choosing, Selecting, and Utilizing a Refrigerant Leak Detector

Know what type of detector you are using, know how to use it, and ensure it’s capable of detecting leaks by calibrating it on a regular basis.




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Hoshizaki America Inc. Transitions Sushi Cases to Hydrocarbon R600a Refrigerant

Hoshizaki America Inc. started shipping sushi cases with the energy efficient and environmentally friendly refrigerant, R600a, earlier this month.




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Target, Amazon Embrace CO2 Refrigeration

Target and Amazon have both recently announced plans to construct new stores that contain CO2 refrigeration systems, which will help the retailers significantly reduce carbon emissions and energy use.




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Revolutionizing Comfort: How Advanced HVAC Technology Is Transforming Living Conditions

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




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Heat Pumps: Their Role in Decarbonization

Across the country, state and local governments are mandating lower building emissions, pushing building owners to full electrification. Building codes and natural gas bans, however, only target new construction.




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How Low-Temperature Absorption Chillers Can Optimize Food and Beverage Processing

By splitting the absorption process into two steps, lithium bromide solution concentrations are lower in the system, enabling lower hot water temperatures within the generator, lower hot water flow rates, and the elimination of crystallization risk within the chiller.




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ABCs of Externally Equalized TXVs

The TXV also simultaneously controls a set amount of evaporator superheat while, under these same conditions, assuming the range and capacity of the valve is not exceeded.




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Fieldpiece Puts Techs in the Driver’s Seat With Customizable HVACR Tools

The Fieldpiece booth commanded a lot of attention on the show floor at this year’s AHR Expo in Atlanta. Those who didn’t have time to wait in line to find out why may be wondering, “What was all the rage about?”




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Monetize Smart Home Market With Thermostats, Doorbells, and More

With a little ingenuity, HVAC contractors could come out on top in the smart homes market for years to come.




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Lennox Recognized for Corporate Responsibility and Sustainability

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




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Cruz Leads Senate Effort to Shut Down Furnace Rule

The rule will effectively ban the sale of non-condensing gas furnaces and, according to the American Gas Association (AGA), will affect 55% of U.S. households.





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Mini Splits Continue to Revolutionize the HVAC Industry

While ductless HVAC is not without its flaws, the technology has evolved exponentially to now provide customers with numerous configurations at affordable prices appropriate for nearly every application, which is music to the ears of entrepreneurial contractors.




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RectorSeal, Panasonic, and Contractor Donate VRF System to Arizona Church

Our Lady of Guadalupe Catholic Church’s community center in the Tempe, Arizona suburb of Guadalupe now has state-of-the-art HVAC thanks to variable refrigerant flow equipment, accessories, and installation labor donations from RectorSeal, Panasonic Air Conditioning Group (a division of Panasonic Corp. of North America), and Woody’s Heating and Air Conditioning.




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Cooper&Hunter: Single-Zone Mini-Split

The 25 SEER model is a wall mount unit with Wi-Fi capabilities, a silver ion filter, a cold catalyst filter, and a GoldFin anti-corrosive coating.




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Troubleshooting Puzzle: A Split System With Ongoing Complaints

The equipment in this month’s troubleshooting situation is a split system that has only been in service for two years, but there is a lot of history.




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A Capital Cost and Energy Saving Approach to Chilled Water HVAC with Zero Emissions Potential

The proposed new approach to chilled water HVAC systems promises to provide significant capital cost savings, energy cost savings, and a path to eliminate CO2 emissions.




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Project Files: Episode 61 — All-Electric, Zero-Carbon Michigan Home

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




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Geothermal and Decarbonization

Decarbonization and electrification, the refrigerant transition, and incentives were big topics among geothermal companies at the AHR Expo. Consumer education and ease of product serviceability were also discussed.




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Optimizing HVACR Efficiency with Smaller Diameter Copper Tubes

Efficient refrigeration and HVAC systems are essential to energy management and operational cost of residential, commercial, or industrial buildings.




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Troubleshooting Puzzle: A Split System That’s Not Cooling

In this month’s troubleshooting problem, the equipment is a split system that’s approximately 8 years old.




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Elon Musk Is Attempting to Revolutionize HVAC Systems

Musk confirmed that his company could make use of their current heat pump technology to develop a smart HVAC system for home use.




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How Can A Direct Drive Design Optimize Cooling Tower Performance?

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




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Maximizing Indoor Air Quality Without Sacrificing Energy Efficiency

The proper application of modern HVAC technologies can help maximize indoor air quality while minimizing losses in operational efficiency.




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The 3-4-5 Rule for Walk-In Coolers And Freezers

During the installation of a new walk-in cooler or freezer, it is imperative the box remain square and level during the assembly of its panels.




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H2VAC: Using Hydrogen Fuel to Decarbonize Heating and Cooling

Discover how hydrogen fuel is poised to revolutionize HVAC systems by reducing carbon emissions and easing strain on electric grids, driving the industry toward a decarbonized future.




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Re: CVE-2024-36905: Linux kernel: Divide-by-zero on shutdown of TCP_SYN_RECV sockets

Posted by Solar Designer on Nov 12

NIST doesn't appear to provide their own CVSS vectors/scores lately.
However, they republish (with attribution) some third-party ones, this
time from CISA-ADP. The CISA-ADP CVSS vector for this vulnerability
specifies that it not only is network-reachable, but also that it has
High impact not only on Availability, but also on Confidentiality and
Integrity. This results in a CVSSv3.1 score of 9.8. Even merely
correcting the vector not to...




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Re: CVE-2024-36905: Linux kernel: Divide-by-zero on shutdown of TCP_SYN_RECV sockets

Posted by Clemens Lang on Nov 12

Hi,

I think the source for the CISA-ADP data is at [1]. For this specific CVE, the relevant file would be [2]. Their readme
has a section at the bottom, where they encourage feedback:

I’m aware of at last one prior case where a similar case of (IMHO) overblown CVSS scores was discussed in an issue on
this particular GitHub project [3].

Somebody seems to already have opened a ticket for this CVE, too: [4]

[1]:...




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RE: CVE-2024-36905: Linux kernel: Divide-by-zero on shutdown of TCP_SYN_RECV sockets

Posted by Joel GUITTET on Nov 12

Hello
First thanks to Alexander for reposting because I was not able to do so!
You're right Clemens, I have myself ask the question on this github
(https://github.com/cisagov/vulnrichment/issues/130), but still no information for the moment.
Joel




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High-performance Buildings Zero in on Zero-Net Energy

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.




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Economizers Offer Many Benefits for Rooftop Units, Air Handlers

Economizers used in rooftop units and air handlers are multipurpose devices that can improve both the energy efficiency and indoor environment in a wide range of commercial buildings.




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DOE, Industry Finalize Standards for Commercial HVAC Products

After six meetings, the working group reached consensus and provided recommendations for energy conservation standards, test procedures, and metrics.




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Portable HVAC Products Provide Specialized Solutions

Since they don’t have to stay in one place, portable cooling units have been known to show up in some pretty unique places. Here’s a closer look at how portable units are serving in some outside-the-box applications.




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Yellow Jacket’s Booth Buzzed with Excitement and Innovation

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.




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For HVAC Companies, a Phantom Stock Plan Can Revolutionize Retention Packages

Learn how HVAC companies can increase retention by giving their employees a stake in the company’s success through phantom stock plans.




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Introducing the HVAC Electrify and Decarbonize e-newsletter

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




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Grundfos Pumps Corp.: Zone Controls

This series of zone controls manages circulators and boilers in residential hydronic heating systems. The non-networked devices control up to six heating zones and can be coupled together in various configurations to accommodate any application. 




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Zoning in on Home Automation

Home automation is no longer a thing of the past. Customers are seeking ways to intelligently control their homes in more ways than ever before, as evidenced by the number of new smart home products on display in this sector at the AHR Expo.




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Easy Connections, Size Highlight Residential Controls Offerings

The ESP-400 by Jackson Systems LLC has earned gold in the Residential Controls category of The NEWS’ 2017 Dealer Design Awards.




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Plug-and-play Zoning is Here to Stay

Zoning has been around for way longer than some of the newest, most popular technologies, like ductless systems, Wi-Fi thermostats, and Alexa; however, its adoption has been slow, comprising only about 5 percent of the market.




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Zoning Adoption Steadily Increases in Residential Market

When it comes to comfort, not much beats zoning. In fact, many industry experts tout that once homeowners have experienced the comfort zoning has to offer, they will never own another house without it.




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For 55 Years, ZoneFirst Has Provided the HVAC Industry With ‘Energy Saving Comfort’

Dick Foster has been preaching the positives of zoning for years. As the owner of ZoneFirst, he has dedicated his life and career to this technology, and it has been a bit of an uphill battle.