Stage 1: Before the visit
- Got the contractor's CSLB license number
- Looked it up at cslb.ca.gov and confirmed it is active
- Business name on the license matches the company
- Asked whether employees or subcontractors will do the work
- Shared the readiness worksheet and the unit's model number if replacing
Stage 2: During the site visit
- Plumber looked at the gas line, meter location and other gas appliances
- Plumber looked at the vent route and the old flue
- Plumber asked about peak hot water use
- Plumber checked where the outlet and condensate drain would go
- Plumber mentioned service valves and flushing for hard water
Stage 3: The written quote
- Unit model and flow rating listed
- Gas, venting, valves, condensate and electrical scope listed
- Permit and inspection addressed
- Removal of the old heater included or excluded in writing
- Payment schedule written down
- Exclusions written down
Stage 4: Install day and sign-off
- Unit fired at low and high flow with no leaks
- Shown the gas valve, service valves and inlet filter
- Given the manual and warranty registration steps
- Inspection scheduled or completed, with records
- Flushing interval discussed and noted on the flushing log
Keep handy
- License lookup
- cslb.ca.gov
- Gas meter questions
- SoCalGas
- Permit questions
- City of Fullerton building department
- Water service questions
- City of Fullerton water utility
Common questions
What if a box stays unchecked?
Ask about it before moving on. An unchecked item is usually a question, not a dealbreaker.
Is it rude to look up a license?
No. Checking a license is a normal step, and good contractors expect it.
Can I use this for a repair visit?
Yes. Stages 1 and 3 apply to repairs as well as installs.
General information for Fullerton, not a quote or professional advice. In an emergency, call 911.