Gas line installation and repair in Longmont, CO covers new gas line runs for appliances like ranges, water heaters, and outdoor fire features, as well as repairing an existing line that's damaged, corroded, or leaking. Gas work carries real safety stakes that most other plumbing doesn't, which is why it follows a stricter set of code and inspection requirements than most residential plumbing work.
If You Smell Gas: What to Do Right Now
- Leave the area immediately and get everyone else out of the house too
- Don't operate any electrical switches, light a flame, or use a phone inside the house, since a spark can ignite gas that's accumulated
- Don't try to locate the leak yourself; once you're safely outside and away from the building, call your gas utility's emergency line first, and then a plumber for the repair
- Don't go back inside until the utility or emergency responders confirm it's safe
A gas leak is one of the few plumbing-adjacent situations where the utility's emergency line, not just a plumber, is the first call. Once the immediate safety issue is addressed and the gas supply is confirmed safe, a plumber handles locating and repairing the actual source of the leak.
Common Gas Line Issues
- Corroded or aging gas line — older black iron pipe can corrode over decades, particularly relevant in Longmont's East Side and West Side Historic District homes with original gas infrastructure
- Damaged flexible connector — the flexible line connecting an appliance to the gas supply can crack or fail with age or if it's been kinked
- New appliance installation — adding a gas range, water heater, or outdoor fire feature requires a correctly sized new line run and connection
- Pilot light or appliance-level issues — sometimes mistaken for a line problem but actually isolated to one appliance's own gas valve or igniter
Why Gas Work Is Inspected Differently
Colorado's gas code, part of the state's broader plumbing and mechanical code under the DORA licensing framework, requires permits and inspection for new gas line installation and most repairs, specifically because an improperly sealed connection or incorrectly sized line is a genuine safety hazard, not just a workmanship issue. This is also why gas line work should never be treated as a DIY project, even for homeowners comfortable with other plumbing repairs.
New Installation Sizing
Adding a new gas appliance means calculating the correct pipe diameter for that appliance's BTU demand along with everything else already running off the same gas line, since undersizing a line serving multiple appliances can starve all of them of adequate gas pressure. This is especially relevant when adding a gas range or an outdoor fire feature to a home that wasn't originally plumbed for it, where the existing line may need upsizing rather than just extending.
What Affects the Cost
New line vs. repair
Installing a new gas line run costs more than repairing an existing connector or fitting.
Line length and sizing
A longer run or one requiring upsized pipe for additional appliance demand costs more.
Appliance being served
Higher-BTU appliances like ranges or fire features may require larger diameter lines than smaller appliances.
Access and routing
Running a line through finished walls or ceilings costs more than an exposed basement or crawlspace run.
Permit and inspection
Gas work requires permitting and inspection, which is a standard part of the project scope.
No two gas line installation & repair jobs cost exactly the same. Call (213) 635-0350 and tell us what you're seeing, and we'll give you a real number instead of a generic range.
Frequently Asked Questions
Leave the house immediately with everyone else, don't use any switches, flames, or phones inside, and call your gas utility's emergency line from a safe distance outside. Don't try to find the leak yourself or go back in until you're told it's safe.
Yes, older black iron gas pipe, common in Longmont's historic-district homes, can corrode over many decades. This is one reason an older home's gas infrastructure is worth having checked periodically rather than assumed to be fine indefinitely.
No, gas line work is inspected under Colorado's gas code specifically because an improperly sealed connection is a real safety hazard. This isn't a recommended DIY project even for someone comfortable with general plumbing repairs.
Yes, new gas line installation is inspected work requiring a permit under Colorado's gas code, regardless of the appliance it's serving.
Yes. If you smell gas, follow the safety steps above first (leave the house, call the utility emergency line), and we handle the plumbing-side repair once the situation is confirmed safe.