Gas line plumber in Cypress, TX for leak repair, generators, outdoor kitchens and tankless heaters

CenterPoint or homeowner: who is responsible for which gas pipe?

The gas meter is the dividing line. CenterPoint Energy owns and maintains the main in the street, the service line to your house and the meter. From the outlet of the meter onward, the gas piping belongs to the property owner. That includes the pipe on the side of the house, any line buried in the yard, and every branch in the attic, walls and garage that feeds your furnace, water heater, range, dryer, fireplace, grill or generator.

CenterPoint is direct about this in its customer notice on buried piping. It says buried gas piping from the meter to the structure or gas equipment is the responsibility of the property owner to maintain. If it is not maintained, it may be subject to corrosion or leakage. CenterPoint recommends having the piping periodically inspected for leaks, having metallic piping inspected for corrosion, and repairing any unsafe condition found. It names plumbing contractors as a resource for that inspection and maintenance.

CenterPoint’s notice has one exception worth knowing. If the meter sits right beside the wall and the pipe goes straight into the building without running underground, there is no buried customer piping to worry about. Some homes are built that way. Homes with a detached garage, a pool heater, a generator pad or an outdoor kitchen usually have buried runs too.

What to do if you smell gas in your Cypress home

A gas smell is a CenterPoint call before it is a plumber call. CenterPoint describes natural gas as having a distinctive, strong odor often compared to rotten eggs or sulfur. Here is the order CenterPoint gives, and the order we repeat to every caller.

1. Leave right away, on foot

   Do not use electric switches, phones, including cell phones, or start or drive a car near the house. Avoid anything that could make a spark.

2. Get to a safe spot

   Outside, move upwind and away from the smell until you can no longer detect it.

3. Call CenterPoint and 911

   CenterPoint’s gas leak lines are 713-659-2111 and 800-752-8036. Do not report a leak by email or online. Never assume someone else already called.

4. Warn your neighbors

   CenterPoint checks suspected leaks at no cost to you.

5. Do not repair it yourself

   CenterPoint says never try to repair a natural gas leak yourself. Once the utility has made the area safe, a licensed plumber repairs the piping on your side.

When the leak turns out to be on the customer side, the repair is the owner’s to arrange, and that is when we come in. We find the leak, repair or replace the damaged section, pressure test the system, and document the result so service can be restored. For any other kind of plumbing emergency, our emergency plumber page walks through the first steps.

Gas line services we handle in Cypress

Standby generator gas hookups after Beryl

Hurricane Beryl came ashore on July 8, 2024, with winds up to 73 mph and 9.7 inches of rain in Cypress. More than 2.2 million CenterPoint customers lost power, many for days in July heat. Less than two months earlier, the May 16 to 17, 2024 derecho had knocked out power to more than 900,000. After that summer, a lot of Cypress homeowners decided that a whole-home natural gas generator was worth it. The generator itself is one project. Getting enough gas to it is another, and that part is plumbing.

Why the gas line matters as much as the generator

A standby generator burns a lot of gas at full load and can be one of the largest gas loads in the house. If the pipe is too small or too long, the generator starves for fuel when it needs it most: when the AC compressor kicks on in August. Generac‘s guidance for its air-cooled home standby units states plainly that it does not size gas lines, that the installer should size the fuel supply for 100% load, and that pipe size depends on the length of the run and the number of elbows and tees. It sends homeowners to their gas provider or a licensed plumber for that sizing.

Example figures from Generac’s support article for its 2013 and later air-cooled models, using schedule 40 black pipe at 5 to 7 inches water column. Real sizing uses the specific model’s manual, the whole house load and the actual route. Other pipe materials use different charts.

That table shows the cause and effect clearly. Double the distance from the meter to the pad, and you can need the next pipe size up. In Cypress, the meter is usually on one side of the house and the best generator spot, away from windows and bedroom walls, is often on the other side, so runs get long.

Gas pressure and the CenterPoint meter

Generac lists a natural gas supply pressure of 3.5 to 7 inches water column for these units. The meter has to deliver enough gas for the generator plus the furnace, water heater, range and anything else that might run at the same time. CenterPoint says a meter may need an upgrade when you add a backup gas generator, a tankless water heater or a heated pool or spa. It offers an online Gas Meter Upgrade tool, says the appliances should be in place and ready to connect before you submit the request, and says the standard upgrade changes the meter’s pressure in its existing location. Moving the meter is a separate request through 800-752-8036.

Portable generators are a different risk

The Consumer Product Safety Commission estimated in 2021 that about 70 people die each year from carbon monoxide poisoning tied to portable generators, and it advises keeping the exhaust 20 feet from the home or any building people can enter. Never run one in a garage, even with the door up. A permanently installed standby unit avoids most of that risk, but its placement still has to follow the manufacturer’s clearances. The electrical side, including the transfer switch, is a separate trade from the gas piping.

Gas sizing for tankless water heaters, tank heaters and new appliances

Every gas appliance has a nameplate rating in BTU per hour. A rough rule from fuel gas training material is that natural gas carries about 1,000 BTU per cubic foot, so a 100,000 BTU per hour appliance needs about 100 cubic feet of gas per hour. Generac uses the same 1,000 multiplier for natural gas. Add up the BTU ratings of everything on the system and you have the load the piping and meter must carry.

The common method in the International Residential Code, as fuel gas training guides explain it, is the longest-run method: measure from the meter to the farthest appliance and use that one length to size every section of pipe. The longer that farthest run, the bigger each section has to be to keep the pressure drop small.

Tankless water heaters

Tankless units are where undersized gas lines show up most. Rinnai, a major tankless maker, says its tankless heaters typically require a 3/4 inch gas line, while most homes in the US have 1/2 inch lines to the water heater. Rinnai’s technical bulletin shows that a 1/2 inch line can work only when pressure is sufficient and the run is short. For its 199,000 BTU model, the bulletin gives a maximum equivalent length of 40 feet of 1/2 inch line under one sizing method, and says the bulletin is not an engineering guide and that a licensed professional should size the line under local code. An undersized line shows up as lukewarm water or error codes when two showers run at once. Our tankless water heater page covers the heater side, and water heater replacement covers attic and garage tank swaps.

When a tank heater fails and you are choosing a replacement, ask us to look at the gas line at the same visit. Finding out the line needs upsizing before you order a tankless unit saves a second trip and a surprise on the bill. If you are staying with a tank, our water heater repair page covers gas valve and burner problems.

Outdoor kitchens, fire pits and pool heaters in Cypress backyards

Larger lots in Cypress, like the 7,500 to 12,000 square foot lots in Coles Crossing, the big lots of Ravensway, and the waterfront lots in Rock Creek and Towne Lake, are where we run the most backyard gas. The work is straightforward when it is done to code and miserable to fix when it is not.

• Buried polyethylene pipe stays outdoors and underground. Fuel gas training material based on the IRC describes plastic gas pipe as permitted only for outdoor underground use, not inside or under a building.
• Bury it deep enough. The same guidance gives a minimum depth of 12 inches, or 18 inches where surface damage is likely, which matters in yards where people dig flower beds and set fence posts.
• Add tracer wire. A copper tracer wire, at least 18 AWG, runs with plastic pipe so the line can be located later.
• Put a shutoff where you can reach it. Appliance shutoff valves go within 6 feet of the appliance under the IRC, per fuel gas training guides.
• Know what does not need a sediment trap. Training guides note that outdoor grills are among the appliances exempt from a sediment trap, while furnaces and storage water heaters need one.

Cypress’s gumbo clay swells when wet and shrinks in drought. That movement stresses everything buried in it, including gas lines, which is why we pay attention to how and where a buried line transitions above ground at the house and at the grill island. If you are building an outdoor kitchen, involve us before the pavers and stone go down, so the line goes in once and goes in right.

How gas line pressure testing works

Any new gas piping, and piping that has been repaired, gets tested before it goes into service. Training guides that summarize IRC Section G2417 describe the basic rules this way.

1. Isolate what cannot take the test

   Appliances, regulators and the meter that are not rated for the test pressure are disconnected or isolated, and open ends are capped.

2. Pressurize with air or inert gas

   The test uses air, nitrogen, carbon dioxide or another inert gas. Oxygen is never used.

3. Test above working pressure

   The test pressure is at least 1.5 times the maximum working pressure, and never less than 3 psig.

4. Hold and watch

   The pressure is held for at least 10 minutes on residential systems. A steady drop means a leak to find and fix before retesting.

5. Purge safely and leak check

   Purging is done outdoors, at least 10 feet from openings and ignition sources, and joints not covered by the test are checked with a noncorrosive leak solution or a listed gas detector, never a flame.

6. Light and check appliances

   Once the system holds, appliances are reconnected, lit and checked.

If your home has yellow-jacketed flexible gas pipe, known as CSST, the code also calls for it to be bonded to the electrical grounding system. Training guides describe a minimum 6 AWG copper bonding conductor. We check for that bond whenever we work on a CSST system, and we will tell you if it is missing.

Permits, licensing and Texas law on gas piping

In Texas, gas piping in your home is plumbing. The Texas Occupations Code defines plumbing to include the piping used to supply or distribute water, other liquid or gas, and the installation, repair, service or maintenance of that piping. That means natural gas line work in a Cypress home is work for a licensed plumber. The main exception in the law is for LP gas system installation done by someone licensed separately under the state’s LP gas rules, which matters for propane on rural properties, not for CenterPoint natural gas customers.

You can verify any plumber’s license for free with the Texas State Board of Plumbing Examiners at tsbpe.texas.gov. Every plumbing company in Texas must operate under a Responsible Master Plumber. The board is at 7915 Cameron Road in Austin.

Permits are a local question. Cypress is unincorporated Harris County, inside Houston’s extraterritorial jurisdiction, so which office reviews gas work depends on the address and what is being done. We confirm what your job needs and pull permits when the work requires them. On jobs that need a gas meter change, CenterPoint has its own process for the meter upgrade. We give you a written price that shows the permit and testing steps before work starts. For the full picture of plumbing costs in Cypress, see the cost section on our homepage (Cypress plumbing costs).

• Anyone who wants to connect a generator or tankless heater without looking at the size of the existing line.
• Flexible connectors run through walls or floors instead of hard piping.
• Leak checks done with a lighter or match.
• An installer who cannot show a Texas plumbing license.

Gas lines by Cypress neighborhood and home age

Many homes in Cypress use natural gas for heat, water heating or cooking, and the piping changes with the era of the house. These are general patterns that help owners know what to look for.

Buyers should ask the inspector to note the gas pipe type, whether CSST is bonded, the age of buried lines, and whether there is a sediment trap at the water heater and furnace. Sellers who added a generator or outdoor kitchen should keep the invoice and test record. Landlords should put CenterPoint’s leak numbers in the lease packet with a plain rule: smell gas, leave first, call from outside. For more on what to check in a Cypress home before buying or selling, see our homepage property guide (property checklist).

Questions Cypress homeowners ask about gas line plumbers

Related plumbing services in Cypress

Cypress neighborhood guides for this service: plumbing in Blackhorse Ranch, plumbing in Rock Creek, plumbing in Dunham Pointe.