Installing a gas line is not a job for shortcuts, a single mistake can put your home and family at serious risk. MT Dunn Plumbing provides safe, code-compliant gas line installation for Hillsboro homeowners, whether you’re adding a gas range, connecting a new water heater, running a line to an outdoor grill or fire pit, or extending service for a full home addition. Every installation is handled by trained technicians who treat gas work with the precision and caution it demands.
Our highly experienced plumbing professionals will contact you for a free estimate and consultation.








Homeowners and businesses in Hillsboro trust MT Dunn Plumbing for safe and professional gas line installation services. Customers appreciate our experienced team, honest communication, and quality workmanship. Whether you need a new gas line for a fireplace, stove, water heater, or outdoor appliance, we provide reliable installation services that meet safety standards and ensure long-lasting performance.
EXCELLENT
Based on 95 reviews
Posted on Google![]()
RubenTrustindex verifies that the original source of the review is Google.
Late Sunday night we had an emergency leak, where we were forced to shut off water to entire house. I reach out MT Dunn plumbing and in a short notice and within 35 mins Irich was able to come over and fixed our leak. Truly appreciate the quick response especially being late Sunday night around 9-10pm!!!Posted on Google![]()
Matt CorradoTrustindex verifies that the original source of the review is Google.
We inadvertently discovered our kitchen and washing machine drains were disconnected and dumping water underneath the house, in the crawlspace. We may never know why or for how long but Irich responded to my call personally and set a date within a single business day knowing we'd couldn't use the kitchen until it was fixed. He was here on time and had it repaired in a half day. Proper invoicing and estimates based on labor and parts always makes me happy. So glad to have a plumber now. I won't go anywhere else.Posted on Google![]()
Nick A.Trustindex verifies that the original source of the review is Google.
I have used MT Dunn many times, mostly smaller projects. Usually available within 24-48 hours. Always professional and courteous. Wouldn’t hesitate to use them again!Posted on Google![]()
MTrustindex verifies that the original source of the review is Google.
Excellent service start to finish. Arrived on time, responded quickly to request. Very friendly and professional. Everything handled with care and expertise. Shower head repair. Hillsboro Area.Posted on Google![]()
Zari MootzTrustindex verifies that the original source of the review is Google.
This is the 3rd time we've used M T Dunn Plumbing, and the 3rd time we've have a 5-star experience. I would recommend them to everyone!Posted on Google![]()
Rie JacobsTrustindex verifies that the original source of the review is Google.
Irich is very easy to work with and always shows up on time. He’s honest, professional, and very efficient. His work is fast but never rushed. He does things the right way and never cuts corners. Over the past three years, he has helped us three times: installing a water heater, replacing some toilet parts, and installing a new toilet. Every job was done quickly and professionally. He’s also very respectful of our home and keeps things clean while working. On top of that, he’s a genuinely kind person—even great with our dog 🐶 His pricing is fair and he never overcharges. It’s hard to find someone this trustworthy. I highly recommend him. Thank you Irich!Posted on Google![]()
Brian SecrestTrustindex verifies that the original source of the review is Google.
I've had MT Dunn plumbing handle a couple of plumbing issues we've had over the last few years. Our most recent visit was due to a leaking valve going to our guest bathroom toilet. It was stripped and Irich was able to fix it in short order. Friendly, transparent, punctual, and knowledgeable. We highly recommend Dunn plumbing and Mikes son Irich.Posted on Google![]()
Cooper HowardTrustindex verifies that the original source of the review is Google.
This is the second time I’ve used M T Dunn Plumbing and both experiences have been great. I recently discovered I had a leaky pipe underneath my cement driveway. M T Dunn came out and assessed the situation and gave me multiple ways get it fixed with varying costs. I decided what I wanted to do and they came out a few days later and took care of it. They cut a hole in the cement, found the leak, fixed it and patched the driveway in a single day which will end up saving me a ton of money. They’re very fair and have gotten things done quickly and easily both times I’ve needed them.Posted on Google![]()
philip salvadorTrustindex verifies that the original source of the review is Google.
Very upfront on pricing, finished the work as expected.Posted on Google![]()
Daniel CruzTrustindex verifies that the original source of the review is Google.
Irich is great and excellent work and did same day service..I would highly recommend mt plumbing for anyone
Here are the plumbing services MT Dunn Plumbing offers to residential and commercial customers throughout Hillsboro, OR.
Precision camera equipment helps identify blockages, root damage, leaks, and pipe defects without unnecessary excavation.
Expert repair solutions restore damaged sewer lines and help prevent further drainage problems.
Setup, repair, and upgrade services provide energy-efficient, on-demand hot water for homes and businesses.
Gas water heaters are mounted safely and conforming to current code guidelines for steady long-term performance.
Advanced trenchless systems replace damaged sewer lines while reducing disruption to landscaping and hard surfaces.
Fast troubleshooting and repairs restore hot water and improve system reliability.
Repair services address jams, leaks, strange noises, and operational issues affecting kitchen disposals.
Gas piping issues and leaks are safely repaired to maintain stability and proper system performance.
Worn or leaking pipes are repaired promptly to protect property and reduce water costs.
Quick repair services stop water leaks, fix broken pipes, and restore safe water flow while limiting property damage.
Inspection and repair services locate the source of sewer odors and restore proper ventilation and venting function.
Expert leak repair services address buried and visible plumbing leaks to prevent water damage, mold growth, and wasted utility expenses.
Focused sewer repair methods correct cracks, root intrusion, corrosion, and pipe failures that can lead to backups and water issues.
Inspection and repair services restore sump pump performance, helping protect basements and crawl spaces from flooding and water buildup.
Specialized leak detection methods locate leaks beneath concrete foundations, allowing for targeted repairs that minimize structural wear.
Corroded or leaking water supply lines are repaired to restore consistent water delivery and prevent property harm.
Fixes address leaks, drainage problems, damaged components, and fixture issues to keep kitchen and bathroom sinks performing properly.
Precise toilet installation services ensure proper alignment, secure connections, dependable operation, and code-compliant performance.
Full-home and point-of-use water filtration systems are installed to improve water freshness, taste, and overall system protection.
Complete diagnostics identify the cause of low or high water pressure and restore balanced flow throughout the plumbing network.
Professional gas fireplace installations provide reliable heating, safe fuel connections, and consistent system performance.
Seasonal solutions help protect plumbing systems from freezing temperatures, reducing the risk of burst pipes and expensive water damage.
Gas line work requires a level of expertise and caution that shouldn’t be left to guesswork.
Certified Gas Fitters
Technicians trained specifically in safe, code-compliant gas line installation.
Permit and Inspection Handling
We manage required permits and coordinate inspections with the local authority.
Pressure Testing Every Line
Every newly installed gas line is thoroughly pressure tested before being placed into service.
Appliance Hookup Expertise
Experienced connecting gas ranges, dryers, water heaters, fireplaces, generators, and outdoor appliances.
Advanced Leak Detection Equipment
Specialized gas leak detection tools verify every fitting and connection is properly sealed.
Proper Gas Line Sizing
Pipe sizing is carefully calculated to provide adequate gas flow for your appliance load.
Indoor and Outdoor Installations
We install gas lines for interior appliances as well as outdoor kitchens, grills, fire pits, and pool heaters.
Quality Materials and Components
We use durable, code-approved piping, fittings, valves, and connectors built for long-term reliability.
Licensed, Insured, and Reliable
Fully licensed and insured professionals committed to safe workmanship and dependable service.
Safety Guidance After Installation
We review shutoff valve locations, explain basic gas safety practices, and answer any questions before leaving.
When gas is involved, Hillsboro homeowners choose MT Dunn Plumbing for installation done right, with safety as the top priority.
Every gas line installation follows a strict, methodical process built around safety and code compliance.
Technicians review what the gas line needs to power, whether it’s a range, water heater, or outdoor fixture, to determine load requirements.
Pipe diameter and run length are calculated based on total appliance BTU load and distance from the gas meter or supply source.
Necessary permits are obtained before installation begins, ensuring the work meets Hillsboro and Oregon gas code requirements.
The most direct, safe route is mapped out, minimizing bends and considering accessibility for future maintenance.
The relevant gas supply is shut off completely before any cutting, connecting, or installation work begins.
Technicians run and secure the new line using approved black steel pipe or CSST tubing, depending on the application and route.
Every joint and fitting is properly sealed and tightened to manufacturer and code specifications.
Accessible shutoff valves are installed at appropriate points, allowing gas to be isolated quickly if needed.
The completed line is pressurized and monitored over time to confirm there is no drop in pressure, which would indicate a leak.
Gas leak detection equipment is used at every joint and connection point to provide an additional layer of confirmation beyond the pressure test.
Once the line passes testing, the appliance is connected, and a final check confirms proper gas flow and appliance function.
For applicable installations, we coordinate the required inspection to finalize code compliance documentation.
Most single-appliance gas line installations are completed within two to four hours, not including inspection scheduling where required.
Gas line work comes up in a variety of situations, all of which call for professional installation. Reach out if you’re:
We install and connect gas lines for a wide range of residential applications.
From what we’ve seen, the answer depends on your home’s layout, the appliances being connected, and the route the gas line needs to follow. At MT Dunn Plumbing, we’ve installed both black steel pipe and CSST, and we’ve found that each material has advantages in the right application.
Choosing the right gas piping material is an important part of building a safe, reliable gas system. Both black steel pipe and corrugated stainless steel tubing (CSST) are approved for residential gas installations, but they aren’t designed for exactly the same situations. Selecting the most suitable material helps improve installation efficiency while meeting current plumbing and fuel gas code requirements.
We’ve installed black steel pipe in countless homes because it remains the traditional standard for strength and durability. It’s highly resistant to physical damage and is an excellent choice for exposed gas lines in basements, garages, and utility areas. The tradeoff is that it requires threaded fittings and more labor, especially on longer or more complicated installations.
CSST has become increasingly popular because its flexible design allows it to route through walls, floors, and tight spaces with fewer fittings than rigid pipe. This often speeds up installation and reduces the number of connection points along the system. Because CSST requires proper bonding and grounding for safety, our technicians complete these steps as a standard part of every installation.
In many homes, we’ve found that the best solution is a combination of both materials. Using black steel near the gas meter and main connections while running CSST through concealed or hard-to-reach spaces provides the durability of rigid pipe and the flexibility of modern tubing where each performs best.
If you’re installing a new gas line, there isn’t a one-size-fits-all answer. We’ll evaluate your home’s layout, appliance locations, and installation requirements to recommend the safest, most durable, and most practical piping solution for your specific project.
Every gas line installation we perform includes thorough safety procedures to help ensure dependable operation, code compliance, and long-term reliability. Before the system is placed into service, we verify each connection, inspect the piping, and confirm that the installation meets applicable safety standards.
| Safety Check | Purpose |
|---|---|
| Gas Leak Testing | Pressurize the new gas line and inspect every connection for leaks before gas is introduced. |
| Pressure Testing | Verify the gas line can safely maintain the required operating pressure without pressure loss. |
| Connection Inspection | Confirm all fittings, valves, and joints are securely installed and properly sealed. |
| Pipe Routing Verification | Ensure gas piping is properly supported, protected from damage, and routed according to code requirements. |
| Shut-Off Valve Inspection | Verify accessible shut-off valves are correctly installed for emergency isolation and maintenance. |
| Appliance Connection Check | Inspect gas appliance connections to ensure secure, compatible, and safe operation. |
| Ventilation Assessment | Confirm gas appliances have proper ventilation where required to support safe combustion. |
| Code Compliance Review | Check that the installation meets applicable local plumbing and fuel gas code requirements. |
| System Function Test | Test the completed gas system to confirm reliable gas flow and proper appliance performance. |
| Final Safety Walkthrough | Perform a final inspection and explain shut-off locations and basic gas safety information to the homeowner. |
By completing these safety checks before the installation is finished, MT Dunn Plumbing helps ensure your new gas line operates safely, efficiently, and reliably for years to come.
Fast Response • Upfront Pricing • Guaranteed Work
MT Dunn Plumbing provides safe, permitted, and thoroughly tested gas line installation throughout Hillsboro, OR, covering everything from kitchen appliances to whole-home generators, with 24/7 availability for urgent gas concerns.
If you smell gas or suspect a leak, that’s not a situation to wait on, and neither are we.
Immediate Priority Response
Suspected gas leaks are treated as the highest priority call we receive.
24/7 Emergency Availability
Available around the clock for urgent gas line concerns.
Rapid Leak Detection
Specialized equipment deployed immediately to locate the source of a suspected leak.
Safe Shutoff Guidance
Clear direction on shutting off gas supply safely while help is on the way.
Coordinated Utility Communication
Communication with the gas utility when a leak requires their direct involvement.
Fast, Thorough Repairs
Once safe, technicians move quickly to repair or replace the affected section.
Post-Repair Testing
Full pressure and leak testing performed before gas service is restored.
Follow-Up Safety Check
A follow-up visit to confirm the repaired line remains fully sealed and safe.
If you ever smell gas in or around your home, leave the area, avoid using electrical switches, and call for emergency help immediately, we treat every one of these calls with urgency.
Costs depend on line length, pipe material, and the number of appliances being connected; we provide a written estimate after assessing your specific project.
Most single-appliance installations are completed within two to four hours, with additional time needed for permit-required inspections.
In most cases, yes, and we handle the permit process and inspection coordination as part of our installation service.
Yes, when properly installed with correct bonding and grounding, CSST is a code-approved and widely used material for residential gas lines.
We perform a pressure test to confirm no pressure loss over time, followed by direct leak detection at every joint and connection.
Yes, we regularly install outdoor gas lines for grills, fire pits, patio heaters, and similar exterior fixtures.
Leave the area immediately, avoid using light switches or anything that could create a spark, and call for emergency help right away.
Whether you’re adding a new gas appliance or extending service for a home addition, MT Dunn Plumbing handles gas line installation with the precision, permits, and testing this work requires.
Contact MT Dunn Plumbing today to book your gas line installation.
At M T Dunn Plumbing, we proudly serve Hillsboro, Beaverton, Portland, Tigard, Lake Oswego, Sherwood, Tualatin, West Linn, Wilsonville, Aloha, Newberg, Gaston, Banks, North Plains, and the surrounding Portland metro areas.
Call Today For A Free Plumbing Estimate