Gas Line Services in the Tri-Valley
Licensed Plumbing Team. Safety-Critical Work Done Right.
If you smell gas in your home, call your gas utility and leave the building. For gas line installation, testing, and leak repair by licensed professionals, Barnett Plumbing and Water Heaters serves homeowners across Pleasanton, Dublin, Livermore, San Ramon, Danville, and the Tri-Valley. CSLB License #910529.
Gas Line Installation
Adding a gas range, fireplace, outdoor grill, pool heater, or dryer requires a properly sized gas line run from your meter or existing manifold to the new appliance location. Undersized gas lines restrict BTU delivery and cause appliances to underperform. We size the line based on the total BTU demand, run black iron or CSST (corrugated stainless steel tubing) per code, and pressure-test the entire system before turning on the gas.
We also run gas lines for tankless water heaters, which often require a larger diameter line than the standard tank unit they replace. If you are upgrading to tankless, the gas line upgrade is part of the conversation.
Gas Leak Detection and Repair
A faint rotten-egg smell near your water heater, stove, or furnace is a sign of a gas leak. Even small leaks at fittings, valves, or appliance connectors are a safety concern. We test gas lines with a manometer (pressure drop test) and use gas-detection instruments to trace the source of the leak.
Once located, we repair the fitting, replace the damaged section of pipe, and retest the system to confirm a tight seal. If the leak is at the appliance connector, we replace the flex line and verify the connection.
Need Gas Line Work Done Safely and to Code?
Gas Line Testing and Pressure Checks
A gas pressure test is required any time a new gas line is installed or an existing system is modified. It is also a good idea whenever you suspect a leak but cannot pinpoint the source. We isolate the gas piping, apply test pressure, and monitor the gauge for any pressure drop over a set period. If the system holds, the piping is tight. If it does not, we systematically locate and repair the leak.
Local building codes in the Tri-Valley require gas pressure testing for all new installations and most modifications. We handle the testing and can coordinate with your local building department for inspection if a permit is involved.
Gas Water Heater Connections
Connecting a gas water heater involves more than just hooking up the flex line. The gas supply has to be properly sized for the unit’s BTU rating. The shut-off valve, drip leg (sediment trap), and flex connector all have to meet current code. We handle the gas side of water heater installations and replacements as part of our water heater installation service, and we can also come out for standalone gas connection work when your water heater is already in place.
Frequently Asked Questions
What should I do if I smell gas in my home?
Leave the home immediately. Do not flip any light switches, use your phone inside, or start your car in the garage. Once you are safely outside, call PG&E at 1-800-743-5000 (or your gas utility). After the utility has cleared the area, call us to locate and repair the leak.
Do you install gas lines for outdoor barbecues and fire pits?
Yes. We run gas lines to outdoor kitchens, built-in grills, fire pits, and patio heaters. The line is sized based on the BTU demand of the appliance, and we pressure-test the entire run before turning on the gas.
Do I need a permit for gas line work?
Most new gas line installations and significant modifications require a permit from your local building department. We pull the permit, schedule the inspection, and make sure the work passes code. Minor repairs like replacing a flex connector typically do not require a permit.
What is CSST and is it safe?
CSST (corrugated stainless steel tubing) is a flexible gas piping system approved by code for residential use. It installs faster than traditional black iron pipe and is widely used in modern construction. When properly bonded and grounded per manufacturer specifications, CSST is a safe and code-compliant option.
How do I know if my gas line is big enough for a new appliance?
Gas line sizing depends on the total BTU demand of all connected appliances, the length of the pipe run, and the supply pressure at the meter. We calculate the load and determine whether your existing line can handle the new appliance or whether an upgrade is needed.
Can you convert my electric water heater to gas?
In most cases, yes. Converting from electric to gas requires running a new gas supply line, installing proper venting, and modifying the water heater connections. We assess your home’s gas capacity and venting options before quoting the conversion.