The Cool Down on MSN

Homeowner buys $99 Groupon duct cleaning, then techs pile on fees with a mold scare

"I feel like I just got duped by a used car salesman." ...
American School & University

Duct system upgrades can result in healthier, quieter and more efficient school facilities.

Replacing or upgrading HVAC infrastructure in an existing school involves more than selecting equipment that can deliver the ...
Interesting Engineering

US hypersonic test lab recreates 1,400°F flight conditions for engine testing

The U.S. has upgraded its HEAT facility to reproduce Mach 4 conditions and speed up the development of scramjets, ramjets and ...
Yahoo Finance

KEYSTONE CAPITAL ANNOUNCES EXIT OF INTEGRA TESTING SERVICES, A NATIONAL PROVIDER OF COMMERCIAL HVAC AND CONTROLLED ENVIRONMENT TESTING SERVICES

CHICAGO, July 1, 2026 /PRNewswire/ -- Keystone Capital Management, L.P. ("Keystone") announced today that funds managed by Keystone have completed the sale of Integra Testing Services ("Integra", or ...
The New York Times

So, Is Duct Cleaning Kind of a Scam? We Asked the Experts.

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Liam McCabe Liam McCabe is a writer covering the big stuff at home: appliances ...
IEEE

A Full Band Acoustic Beamforming Method in an Infinite Duct by the Corrected Pressure Measurement

Abstract: An improved beamforming method to effectively localize the location of the sound source within an infinite duct is introduced in this paper. The beamforming results may deteriorate when ...