When a duct-cleaning vacuum is running but debris is not moving effectively through the section being cleaned, the problem is not necessarily the vacuum itself. In many cases, the more useful question is where the vacuum is connected and what airflow path that...
The duct vacuum hose diameter can materially affect how much airflow resistance develops between a professional vacuum and the section of duct being cleaned. But diameter is only one part of the equation. A larger hose provides more cross-sectional area and, under...
Most contractors troubleshoot weak suction by checking the machine. Filters, motor amperage, hose connections. Rarely do they walk back to where the unit is actually sitting. That is a mistake, because equipment placement is one of the few variables in a duct cleaning...
Most residential HVAC contractors leave $3,000 to $5,000 per month on the table. Not because they lack the skills. Because they have not structured their service menu around high-velocity, low-labor add-ons. Full-system duct remediation jobs are profitable, but they...
For professional duct cleaning, vacuum performance cannot be reduced to one number. CFM tells you about airflow. Water lift tells you about the vacuum’s ability to work against resistance. Static pressure describes the pressure conditions within the system. Hose...
