Why an inventory matters
Gas pipe is sized for the total of everything it feeds. When you call about adding a tankless water heater, a pool heater or a bigger range, the first thing a careful contractor needs is a list of what is already on the line. Having it ready makes the conversation faster and the estimate more accurate.
The same list doubles as an upkeep record: how old each appliance is, when its connector was last replaced, and whether it has its own shutoff valve.
How to find the information
- Find the data plate.Every gas appliance has a label with the model, serial number and input rating, usually in BTU per hour. Check inside the range drawer or door frame, behind the dryer's lower panel, on the water heater's side, and inside the furnace door.
- Photograph it.A phone photo of each label is easier than copying numbers in a cramped space.
- Estimate age.Install dates may be on a sticker or in old paperwork; serial numbers often encode the year.
- Look at the hookup.Note whether there is a shutoff valve and what the connector looks like.
Inventory sheet
| Appliance | Location | Input rating | Approx. age | Valve present? | Connector condition |
|---|---|---|---|---|---|
| Water heater | ________ | ________ | ________ | ________ | ________ |
| Furnace or wall heater | ________ | ________ | ________ | ________ | ________ |
| Range or cooktop | ________ | ________ | ________ | ________ | ________ |
| Oven (if separate) | ________ | ________ | ________ | ________ | ________ |
| Dryer | ________ | ________ | ________ | ________ | ________ |
| Fireplace | ________ | ________ | ________ | ________ | ________ |
| Barbecue or fire pit | ________ | ________ | ________ | ________ | ________ |
| Pool or spa heater | ________ | ________ | ________ | ________ | ________ |
| Planned additions | ________ | ________ | n/a | n/a | n/a |
What your inventory may tell you
- IfThe planned addition is large compared with the rest of the listThenExpect the line, and possibly the meter, to need review.
- IfAn appliance has no shutoff valveThenAsk a licensed contractor to add one.
- IfA connector is old, kinked or reusedThenPlan to replace it.
- IfThe water heater is a tankThenConfirm it is seismically strapped, as California requires.
Bring this sheet to
- New appliance quotes
- So the contractor can size the line
- A SoCalGas load question
- If the total is rising significantly
- Permit applications
- The city may ask what is being added
- Home sale paperwork
- A handy record for buyers
Common questions
What if the data plate is unreadable?
Write down the brand and model if you can. The contractor can often look up the rating from the model number.
Do I list appliances that are turned off?
Yes, if they are still connected. Also list capped outlets so they are not forgotten.
Is the rating the same as what it uses?
The rating is the maximum input. Sizing uses the maximum because appliances can run at full fire at the same time.
General information for Fullerton, not a quote or professional advice. In an emergency, call 911.