Gas Line Repair, Installation & Leak Detection in Annapolis, MD
Gas can be very dangerous, so it's important to always have a gas line repair and leak detection company on hand. Heidler, Inc.'s licensed technicians install, repair and leak-test gas lines across Annapolis and Anne Arundel County.
Gas Line Repair, Installation and Leak Detection
**If you smell gas, leave the building first.** Call the gas utility from outside, and don't switch anything electrical on or off on your way out. Once you're safe and the utility has been notified, call us at (410) 268-7191 and we'll handle the repair.
Our gas line work splits into three related things. **Installation** covers new lines for ranges, dryers, water heaters, boilers, fireplaces, outdoor grills and generators — the critical part being that the supply is sized so every appliance still gets adequate pressure once the new one is added. **Repair** covers corroded, damaged or improperly installed line, including the older black iron that has been in service for decades in much of this county's housing.
**Leak detection** covers finding what you can't see, using combustible gas detectors and pressure testing to isolate which section of a system is losing gas. That's a different discipline from water leak detection and it's one where being thorough genuinely matters.

Why Sizing and Testing Are the Whole Job
The two most common problems we find in existing gas systems are both invisible. The first is undersized supply: a line adequate for the appliances present in 1985 that has since had a second furnace, a range and a fireplace added to it. Every appliance on that system runs starved, which causes poor combustion and premature failure without ever looking like a gas problem.
The second is inadequate testing after work. A joint that was never properly pressure-tested can weep slowly for years. We pressure-test every gas job and leak-check every joint before sign-off, and we permit the work where Anne Arundel County requires it. That's not extra care — with gas it's the baseline.
Where the run has to go underground — out to a standby generator, a pool heater, an outdoor kitchen or a detached garage — see gas line excavation for what burial adds to the job.

- New gas line installation for any appliance
- Corroded and damaged line repair
- Combustible gas leak detection
- Supply sizing calculated, not guessed
- Every job pressure-tested and permitted
- Emergency response

Family owned since 1947
79 Years Serving Annapolis Homes
Heidler, Inc. has been the name Annapolis and Anne Arundel County families trust since 1947 — three generations of the same family, doing the job right and standing behind it. Call during office hours and you reach a real person, not a phone tree. When we quote, it's a flat rate you approve up front. And every technician we send is background-checked and drug-tested, so you always feel safe with us in your home.
The Plumber Protects the Health of the Nation
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- generations, family owned
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Know the warning signs
When to Call for Gas Line Repair, Installation & Leak Detection
The Smell of Gas
UrgentRotten-egg odor means leave the building and call the utility from outside immediately. Everything else waits until you're clear.
A Hissing Sound Near a Line or Appliance
UrgentAudible hissing at a connection or along a run indicates gas escaping under pressure. Evacuate and call — don't investigate.
Dead Vegetation Over a Buried Line
UrgentA patch of grass or shrubs dying in a line over the gas service often marks an underground leak displacing oxygen at the roots.
Appliances Underperforming Together
Several gas appliances running weakly at once usually means the supply is undersized or restricted rather than each one failing.
How it works
Straightforward From Call to Cleanup
Safety First, Then Call
Suspected leak? Leave and call the utility from outside. Then call (410) 268-7191 and we'll get to you as fast as we can.
Detect and Isolate
We use combustible gas detection and pressure testing to identify exactly which section of the system is at fault.
Size, Quote and Permit
For new work we calculate supply sizing across all appliances, quote flat-rate, and pull the permit where required.
Test Before Sign-Off
Every joint is leak-checked and the system pressure-tested before we hand it back and see it through inspection.
The Heidler difference
Why Annapolis Trusts Heidler
Licensed, In-House Gas Technicians
We don't subcontract gas work. It's been part of Heidler since 1947 and it stays with our own licensed people.
We Size the Whole System
Adding an appliance without recalculating supply starves everything on the line. We do the calculation rather than hoping.
Tested, Every Time
Pressure-tested and leak-checked before sign-off, without exception. With gas there's no acceptable version of assuming.
Gas Calls Come First
A suspected gas leak goes to the front of our schedule. Call the utility from outside first, then call us.
The Plumber Protects the Health of the Nation
Questions?
Gas Line Repair, Installation & Leak Detection FAQs
What do I do if I smell gas in my house?
Leave immediately and take everyone with you. Call the gas utility from outside the building. Don't switch lights, appliances or anything electrical on or off, and don't try to find the leak. Once the utility has made things safe, call us for the repair.
Can you add a gas line for a new range or grill?
Yes. The key part is sizing — adding an appliance to a supply that's already at capacity leaves everything on that system underperforming. We calculate the load across all appliances before running anything new.
How do you find a gas leak?
Combustible gas detectors identify the presence and rough location, and pressure testing isolates which section of the system is losing gas. Between them we can narrow it to a specific run or joint rather than replacing line speculatively.
Is black iron pipe still acceptable?
Yes, it's still standard for interior gas piping and much of this county's older housing uses it. What matters is its condition — badly corroded sections need replacing, and any modification needs proper testing afterward.
Do I need a permit for gas line work?
Almost always, and the work requires inspection in Anne Arundel County. We handle permitting as part of the job so compliance isn't something that surfaces later during a home sale.
Where we work
Gas Line Repair, Installation & Leak Detection Across Anne Arundel County
Need Gas Line Repair, Installation & Leak Detection? We've Fixed It Since 1947.
Flat-rate pricing, our own Annapolis office on the phone, and technicians you can trust in your home. Call now or schedule online.
