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Baltimore Ravens Donate $200,000 for School HVAC Upgrades

This is the first funding distributed from the players’ pledge through the social justice fund and continues the Ravens’ commitment to making a difference throughout Baltimore.




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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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Navigating Technology Adoption in the HVACR Trades

While new technology can certainly help streamline certain aspects of HVAC business operations, like accounting and inventory management, it still needs to be viewed as a tool to augment the capabilities of employees, not replace them entirely.




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Artificial Intelligence is Taking on More Tasks, and This Can Help HVAC Office Workers Get More Done

Artificial intelligence, or AI, is now able to handle many of an HVAC contractor’s administrative tasks, and also help employees perform their own tasks better.




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Technology Enables HVAC Contractors to Crack Down on Distracted Driving

The advent of smartphones has made life both simpler and more complicated for people around the world.




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Rooftop Retrofits Can Bring Indoor Air Quality, Occupant Comfort, Energy Savings

Packaged rooftop units are the workhorses of the commercial market, providing cooling to approximately 60% of U.S. commercial building floor area.




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Rooftop Unit Manufacturers Work Toward 2023 DOE Efficiency Standards

For many manufacturers, higher efficiency systems have been in the works for a while, but the 2023 DOE standards, pandemic, and current supply chain issues have added pressure.




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New Rooftops Meet DOE Energy Standards and More

Manufacturers were eager to show off their latest energy-efficient RTUs, many of which can also be used to meet building owners’ decarbonization and electrification goals.




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Heat Pumps Dominate Residential Cooling Scene at AHR

In the realm of residential cooling, two trends popped out at the 2023 AHR Expo: the new federal tax credits and heat pumps.




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Window Air Conditioners Take a U-Turn

New window units are quiet and efficient, and HVAC contractors may want to consider offering them to customers who need them on an emergency – or long-term – basis.




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LG Debuts Chiller, DOAS at AHR Expo

Heat pumps are seen as a main weapon in the battle to stem climate change. LG Electronics specializes in heat pumps, so this was a good opportunity for the company to promote its wares.




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Bergdorf Goodman Store Installs Low-GWP Chillers

Trane Technologies and Neiman Marcus Group are collaborating to decarbonize the luxury retailer’s footprint through renewable energy, electrification, energy efficiency, and refrigerant management.




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Project Files: Episode 49 — Downtown Denver Rooftop Replacement

The cooling towers located on the roof of Granite Tower in Denver were meant to last 20 years. But at nearly 40 years, the cooling towers and fluid coolers were well past their life expectancy.




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Don’t Let the Massive Emergence of Cicadas Bug Your Cooling Tower Performance

With a double brood of cicadas forecasted to awaken, now is the time to prepare for how to deal with the mess they will leave behind and the potential damage they can do to equipment.




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Don’t Be a One-Gauge Technician

When servicing a refrigeration system, it is important to accurately determine the true cause of the failure. Misdiagnosing the problem can often create additional system issues for you and the customer.




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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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Does the HVAC Industry Help People Sleep Better?

Lack of comfort is a highly overlooked reason for poor sleep. Most people don't know that inadequate rest is a leading cause of various medical problems.




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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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Cooper&Hunter and Tropic Supply Team Up to Donate HVAC Systems

In collaboration with Tropic Supply, Cooper&Hunter has gifted Daytona State College with six complete HVAC systems, considering the donation as a useful investment in the next generation. The on-campus working stations, which include units from Cooper&Hunter’s modern “Sophia Mini-Split Single Zone Series,” will give students hands-on learning opportunities with technology that is becoming increasingly popular in the U.S.




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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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Mini-Splits Make for Comfort, Convenience, and Healthy Indoor Living

The two-story lake house totals 4,600 square feet above ground and 2,000 finished square feet in the daylight basement.




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When Troubleshooting a Refrigeration System, Don’t Make Assumptions

Troubleshooting refrigeration systems can be complex and frustrating, so put aside any assumptions and inspect the system thoroughly before making any diagnosis.




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Don’t Overlook Cleaning the Evaporator Coil 

Cleaning evaporator coils in a walk-in cooler can be challenging, but it needs to be done in order to keep the system operating efficiently.  




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Guiding Customers through Indoor Air Quality and the Tips to Maintain IAQ

As HVAC providers, we have the ability to advise homeowners, builders, and property managers on ways to improve their indoor air quality.




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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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How Much Do You Know About HVAC Service?

Whether you’re the owner of an HVAC contracting company or a student at a tech school, take this quiz to find out how much you know about servicing equipment.




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CVE-2024-50386: Apache CloudStack: Directly downloaded templates can be used to abuse KVM-based infrastructure

Posted by Daniel Augusto Veronezi Salvador on Nov 12

Severity: important

Affected versions:

- Apache CloudStack 4.0.0 through 4.18.2.4
- Apache CloudStack 4.19.0.0 through 4.19.1.2

Description:

Account users in Apache CloudStack by default are allowed to register templates to be downloaded directly to the
primary storage for deploying instances. Due to missing validation checks for KVM-compatible templates in CloudStack
4.0.0 through 4.18.2.4 and 4.19.0.0 through 4.19.1.2, an attacker that...




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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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Aircuity is Approved Vendor for Real-Time Energy Management Program

Aircuity has been named a New York State Energy Research and Development Authority Qualified Vendor for the RTEM program.




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DOAS Gaining Traction in US

Commercial building codes are mandating higher volumes of fresh-air intake than ever before. To help meet these ventilation requirements, more and more HVAC contractors and building owners are turning to dedicated outdoor air systems (DOAS). 




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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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Modine Donation Keeps High School Gridders Cool

The two donated Airedale ClassMate packaged units were installed in the football team's fieldhouse at Parry McCluer High School in Buena Vista, Virginia.




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Q&A: Does Building Automation Make a Difference in Air Quality?

Today’s commercial structures are full of sophisticated controls that have been changing building automation systems exponentially.




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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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Project Files: Episode 24 — The Lido House

The project team and property management realized they needed to maximize open space for use by hotel guests. They chose LG’s Multi V™ 5 and Multi V™ S VRF systems, noted for energy efficiency and flexibility in design and installation options.




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How Many Homeowners Know What a Heat Pump Does?

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




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Heat Pump Adoption Uptick in Maine

Despite the arguments regarding the practicality of heat pumps in cold climates, residents of Maine have fully embraced them.




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How to Explain Odor from Gas Furnace

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




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Peterman Brothers Charity Showdown Supports Indianapolis-Area Community Organizations

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




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DOE Issues 95% AFUE Rule For New Gas Furnaces

Manufacturers will have five years, from the date the rule is published in the Federal Register, to ensure that new gas furnaces comply with the new minimum.




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New Efficiency Rule Issued by DOE

The latest rule will require every mobile home gas furnace — and every new residential, non-weatherized gas furnace — to have a minimum annual fuel utilization efficiency (or AFUE) of 95% starting in late 2028.




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Trade Groups File Challenge to DOE Furnace Rule

The final rule from the U.S. Department of Energy, issued recently, requires newly manufactured indoor residential gas furnaces to be at least 95% efficient starting in December 2028, meaning furnaces made after then will have to be condensing models.




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Ted Cruz Gives DOE Furnace Rule Pushback

U.S. Senator Ted Cruz is leading the charge to assist HVAC contractors in pushing back on the final rule on gas furnace efficiency standards from the U.S. Department of Energy (DOE).




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NPCAP 1.60 high CPU usage with pcap filter that does not pass anything (Win10)

Posted by Vladimir Soldatov on Sep 17

Hi guys,

I've a setup (Win10, Intel X520, NPCAP 1.60) with relatively high traffic
around 700 Mbit/s and I am trying to test the following cases:
1. Capture everything with empty pcap filter and just print stats with some
period calculating captured data size
2. Capture nothing with an intentionally created filter that does not match
the received traffic at all.
3. Capture some subset of traffic like 10%.

In all the cases, CPU usage...




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Episode 3: Interview Doug Schmidt

In this episode we talk with Doug Schmidt. Doug is a professor of computer science at Vanderbilt University and a well-respected authority in the fields of middleware, patterns and model-driven development. In this interview we talk about these topics in the context of distributed, realtime embedded (DRE) systems.




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Episode 31: Agile Documentation

In this episode, our guest Andreas Rueping and Markus talk about documenting software. While this is a topic that many people don't like or consider fun, it is nonetheless very important. Based on his book, Agile Documentation, we talk about various aspects documenting software such as what to document, when to document, which media to use as well as specifically a number of layouting tips for nice documents.




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Episode 73: Real Time Systems with Bruce Powel Douglass

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.




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Episode 95: The New Guardian.co.uk website with Matt Wall and Erik DoernenBurg

In this episode we talk to Matthew Wall (Guardian News and Media) and Erik Doernenburg (Thoughtworks) about their work on the new guardian.co.uk website. We discuss the challenge of scalability and interactivity, their use of Domain Driven Design, some of the technical building blocks as well as the approaches they use for performance measuring and scalability tuning.