Service illustration · not a completed customer projectTHE WORK, EXPLAINED
Start with the condition.
Understand the scope.
Explain the dusty work, which rooms or openings were affected and whether the HVAC system operated during it. Ask how further dust entry will be controlled and how the observed condition will determine the assessment or cleaning scope. Separate building cleanup from system work and request a record of the components addressed.
What may be involved
- supply registers
- return registers
- filters
- documented affected components
Ask the provider to distinguish existing parts to inspect, proposed replacements, and tools, materials or reports included in the service. Confirm the work and exclusions after assessment; this list does not mean that every item will be supplied or replaced.
LOCAL RESEARCH / San Mateo
Building history
Successful subdivision of the Howard estate in 1889 opened smaller plots and brought middle-class residents; the town incorporated in 1894.
Source ↗Local exposure
The Crystal Springs Gap lets summer maritime air cool the corridor from San Mateo to Redwood City.
Source ↗Planning your work
Duct cleaning is not usually construction work, but replacing, altering or reconnecting ductwork or air-handling equipment can be. The Contractors State License Board's consumer page on building permits sets out the California Building Standards Code position that work may not be erected, altered, repaired or demolished without a permit first obtained from the building official, and says code requirements vary between cities and counties. Ask which parts of the proposed scope are cleaning and which are alteration, then check with the building department for the address.
Source ↗Area-wide context does not establish the condition of your property or equipment.
Before the visit
Building age and weather cannot establish duct contamination. The system itself needs to be inspected.
