Service illustration · not a completed customer projectTHE WORK, EXPLAINED
Start with the condition.
Understand the scope.
List the access openings used or proposed and who is responsible for restoring each one. Ask how the closure and insulation will suit the existing construction and how completion will be recorded. EPA includes airtight sealing and re-insulation of access openings in its consumer checklist.
What may be involved
- access door
- airtight seal
- insulation
- fasteners
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 / Daly City
Building history
The city boomed after the 1906 earthquake and was incorporated in 1911, so older post-earthquake housing is part of its built history.
Source ↗Local exposure
The air district’s 2011 regional climate description notes frequent cool, foggy summer weather in coastal Peninsula towns. This is regional outdoor context, not an assessment of a property’s equipment or indoor conditions.
Source ↗Local context
Where duct or HVAC work is permitted in California, independent field verification can be part of closing the permit. The California Energy Commission's Home Energy Rating System page says that depending on the work being done HERS testing may be mandatory and that properly permitted work will trigger any necessary testing, that a homeowner has the right to find and hire a rater who is independent of the contractor, and that suspected asbestos in duct insulation or sealing can exempt some tests, including duct leakage testing. Ask early whether the proposed scope is cleaning alone or work that would trigger verification.
Source ↗Planning your work
Daly City's Building Division publishes a building maintenance permit covering, in the city's own words, the replacement of an electrical service upgrade, furnaces, garage doors, roofs, siding, termite work, water heaters, windows and other similar replacement work. If the job being discussed is a straight replacement of one of those, ask whether it is handled as a maintenance permit. Confirm the address and the proposed scope with the Building Division; this page does not decide what your property requires.
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.
