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10 Things to Know Before Your First Mini-Split Call

The first time a technician has to tackle a ductless mini-split can be nerve-racking, but by following these 10 tips, the job can be done without all the anxiety.




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Xen Security Advisory 464 v2 (CVE-2024-45819) - libxl leaks data to PVH guests via ACPI tables

Posted by Xen . org security team on Nov 12

Xen Security Advisory CVE-2024-45819 / XSA-464
version 2

libxl leaks data to PVH guests via ACPI tables

UPDATES IN VERSION 2
====================

Public release.

ISSUE DESCRIPTION
=================

PVH guests have their ACPI tables constructed by the toolstack. The
construction involves building the tables in local memory, which are
then copied into guest memory. While actually used...




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Xen Security Advisory 463 v2 (CVE-2024-45818) - Deadlock in x86 HVM standard VGA handling

Posted by Xen . org security team on Nov 12

Xen Security Advisory CVE-2024-45818 / XSA-463
version 2

Deadlock in x86 HVM standard VGA handling

UPDATES IN VERSION 2
====================

Public release.

ISSUE DESCRIPTION
=================

The hypervisor contains code to accelerate VGA memory accesses for HVM
guests, when the (virtual) VGA is in "standard" mode. Locking involved
there has an unusual discipline, leaving...




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Re: Xen Security Advisory 464 v2 (CVE-2024-45819) - libxl leaks data to PVH guests via ACPI tables

Posted by Andrew Cooper on Nov 12

Data are leaked into the PVShim guest, but it is the shim Xen
(exclusively) which has access to the ACPI tables.

The guest which has been shim'd can't architecturally access the leaked
data.

~Andrew





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Re: Xen Security Advisory 464 v2 (CVE-2024-45819) - libxl leaks data to PVH guests via ACPI tables

Posted by Demi Marie Obenour on Nov 12

Is this unconditional (perhaps because the relevant data gets zeroed out
by the shim), or does it only apply when the PV guest can't extract data
from the shim's memory? For instance, 32-bit PV guests aren't security
supported anymore, but the PV shim isn't supposed to rely on the
security of the shim itself, only of the rest of the system.




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Panasonic Manages Consumer Comfort, Controllability, and Costs

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.




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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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Industry Responds as Companies Commit to Battling Climate Change

Corporate America is making pledges to take action against climate change, which is opening up opportunities for HVAC contractors.




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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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Honeywell Launches Autonomous Building Sustainability Solution To Fight Rising Global Energy Consumption

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




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Project Files: Episode 27 — U.S. Air Conditioning Distributors

When it comes to smart thermostats, USACD walks the walk and talks the talk.




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Acuity Brands to Acquire KE2 Therm

The acquisition extends Distech Controls’ addressable market into commercial refrigeration.




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BrainBox AI in Agreement to Acquire ABB’s Multisite Retail Energy Management System Integrator Business

BrainBox AI intends to integrate ABB’s MSR business and its installed base of 12,000-plus retail locations in its current operations.





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New Belimo Retrofit Program Designed to Boost Efficiency

RetroFIT+ is the next iteration of the Belimo retrofit program, which offers online resources, including a product-selection tool, as well as personal support to provide quick and easy access to HVAC replacement solutions for actuators, valves, and sensors.




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Johnson Controls Inc.: Packaged Units

New Champion LX Series packaged units heat and cool residential and light commercial buildings. 




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Schools Save Energy with CHP

While cogeneration is still largely an industrial process, the market has significant potential for educational institutions coast to coast.




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Trane, a brand of Ingersoll Rand: PTAC Units

ProSpace packaged terminal air conditioner (PTAC) quiet comfort systems deliver air comfort and quality to the hospitality industry. 




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Nortek Global HVAC Introduces 3-Phase Light Commercial Air Conditioner

Nortek Global HVAC has introduced a new three-phase electric/electric packaged cooling solution. The company said the Model P8SE delivers 14 SEER cooling in capacity ranges from 3 to 5 tons in even tonnages, making it an energy-efficient choice for strip malls, restaurants, and retail stores.




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Nortek Global HVAC: Packaged A/C Unit

The Model P8SE light commercial air conditioner is a three-phase electric/electric packaged cooling solution. It delivers 14-SEER cooling in capacities ranging 3-5 ton in even tonnages, making it fit for strip malls, restaurants, and retail stores. 




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Luxaire® Unitary Products: Package Equipment

This series of residential package equipment features energy-saving performance as well as cost-effective installation and maintenance.




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Coleman Heating and Air Conditioning: Packaged Units

The units feature an exact-fit replacement design that matches the units to footprints of other manufacturers’ units and eliminates the need for a curb adapter.




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Serviceability, Flexibility Earn Aaon’s WH Series DDA Gold

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.




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Fujitsu Technical Service Advisors Conference Creates a Unified Front

Fujitsu’s Technical Service Advisors event was held to strengthen manufacturer-distributor relationships and empower in-field technical support staff.




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Wireless, Connected Tools Surging in Popularity

There’s no doubt the connectivity of mobile devices has made our personal lives more convenient, but now they’re also helping make technicians more efficient, thanks to tool manufacturers developing wireless-enabled devices and test and measurement apps for download.




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Fluke Connect Grabs Testing and Monitoring Gold

Fluke Corp.’s Fluke Connect received the gold award in the Testing & Monitoring category of the 2015 Dealer Design Awards.




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E Instruments Intl.: IAQ Monitors

This series of IAQ monitors can measure ambient temperature, relative humidity (rh), wet bulb, dew point, differential pressure, barometric pressure, CO2, CO, O2, ozone, formaldehyde, volatile organic compounds, NO, NO2, SO2, and H2S. 




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Testing, Monitoring Products Designed with the User in Mind

Many new testing and monitoring products were on display last month at the AHR Expo in Orlando, Florida, where manufacturers showcased and demonstrated their newest, smartest products.




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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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Testo Targets Younger Generations with More Innovative Instruments

Last year was a notable one for Testo Inc. as the test and measurement manufacturing company celebrated its 60th anniversary. However, 2018 promises to be just as momentous as Testo US will reach its 35th anniversary milestone.




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HVAC Pros Discuss Their Favorite Diagnostic Troubleshooting Tools

HVACR technicians are special individuals. They have the intelligence, aptitude, and knack for problem-solving. In fact, they are expected to know how to diagnose and troubleshoot equipment of all types, sizes, and ages.




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Dwyer Instruments Inc.: CO Monitor

This product provides field-selectable current or voltage output that is proportional to the CO concentration of an area.




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Extech, a division of Flir Systems Inc.: Digital Multimeter

Designed for HVAC and refrigeration professionals to view electrical and temperature readings, this product logs data remotely using the ExView® W-Series app on smartphones and tablets via Bluetooth.




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North Park Innovations Group: System Monitor

This product is a leave-behind HVAC analytic device that technicians can install on each unit, regardless of the brand they service.




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2020 Dealer Design Awards: Testing & Monitoring Products

Badger Meter won Gold in the Testing and Monitoring category for its Dynasonics® TFX-5000 ultrasonic clamp-on meter, which measures volumetric flow and heating/cooling energy rates in clean liquids, as well as those with small amounts of suspended solids or aeration, such as surface water or raw sewage.




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Contractors Discuss How to Handle Tool Policies With Technicians

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




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HVAC Tools Are Becoming More Advanced, Leading to Profit Opportunities

Investing in the right tools will save your employees’ time and avoid delaying repairs in the rush of summer.




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Growing Trends in Tool Technology Bring Benefits for Technicians

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




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possible false positive for 'INDICATOR-SHELLCODE x86 setgid 0' can someone confirm

Posted by John via Snort-sigs on Oct 29

When I attempt to download the following xz file, my IPS blocks it with the below populating the snort log. I suspect
this is a false positive unless there is some code in the xz file that is truly malicious. Can someone with more
knowledge about the rule please comment?

Link to file that triggers the match:
http://fl.us.mirror.archlinuxarm.org/armv7h/extra/qt5-base-5.15.15%2Bkde%2Br136-1-armv7h.pkg.tar.xz

Entry from snort log:...




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Website launched

Our new website has been launched today. Tell your visitors why you have started a new presentation and how it benefits them. Mention your goals and project advantages. Try to briefly give your visitors reasons why they should return to your pages.




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Visitors notice

Let your visitors know about news and events on your website as often as possible. You need to keep your website up-to-date so that your visitors will get used to visiting your pages regularly. You can use RSS feeds to deliver new articles directly to your readers.




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For Grocers, Collaboration with HVACR Contractors is Key

Grocers are looking to their refrigeration contractor partners to be the experts and make suggestions about how they can transition smoothly to the new low-GWP refrigeration technologies.




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A Way to Listen to Every Interaction Your Tech has with a Customer

AI technology can help HVAC contractors monitor each sales and repair call.




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A Case Study: Driving Energy Efficiency Through Utility Incentives

Is reducing a facility's energy consumption by over 130,000 kWh annually through HVAC optimization possible?




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How To Clean the Ducts in a Home With Asbestos

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.




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Preparing for the Annual HFC Audit Requirement

Annual HFC inventory reports are required to be audited by a CPA to ensure compliance, and regulated entities should understand what to anticipate for the 2024 compliance period. 




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What Trump’s Election Means for HVAC Tax Credits and Incentives

With the election of Donald Trump to President of the United States, the HVAC industry is wondering how this will affect the Inflation Reduction Act incentives.




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Is it Time to Quit?

When starting a company on a new path, the goals and routes can be quite different than expected, so plan on taking a few detours and be willing to make adjustments. 




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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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Digital Twinning Makes Mark on Commercial Built Environment

There is a new term making its way into the commercial controls arena: digital twin.