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Best Gas Line Plumbing Companies in Idaho Ranked

Connecting a new gas range, installing a tankless water heater, or repairing an aging gas line are projects that require precision and expertise. Working with natural gas or propane involves significant safety risks, making professional installation and adherence to strict state and local codes non-negotiable. This resource provides Idaho homeowners with essential information on the process, regulations, and what to expect when hiring a professional for gas piping services, helping you make informed decisions for your home.

Peppy Heating and Cooling Boise

Peppy Heating and Cooling Boise

590 N Maple Grove Rd Ste #7, Boise, ID 83704

Peppy Heating and Cooling Boise is a plumbing and HVAC service provider located in Boise, ID. They offer water heater repair and installation, leak detection, and gas line installation services. The company is known for thorough diagnostics and repairs, including identifying and fixing issues with HVAC systems and water heaters. Customers appreciate their clear communication and detailed explanations of work performed. Peppy Heating and Cooling Boise has built a reputation for honest service and professional installations, including ductless mini-split systems and Trane equipment.

5.0
620 Reviews
Proficient Plumbing Service

Proficient Plumbing Service

75 W Taylor Ave #200, Meridian, ID 83642

Proficient Plumbing Service is a locally owned plumbing company serving Boise, ID, and the surrounding Treasure Valley communities. They offer a wide range of plumbing services including water heater repair and installation, water softener installation, sump pump repair, drain cleaning, leak detection, repiping, gas line installation, toilet repair, and garbage disposal repair. Their fully stocked plumbing trucks provide service to Boise, Meridian, Eagle, Nampa, and other nearby areas. Proficient Plumbing Service emphasizes attention to detail to prevent future issues and maintain customer satisfaction.

5.0
476 Reviews
Ritchie Plumbing LLC

Ritchie Plumbing LLC

2903 S Fox Den Pl, Eagle, ID 83616

Ritchie Plumbing LLC is a plumbing and water treatment company serving Boise, ID, and the greater Treasure Valley. With over 35 years of experience since 1988, they provide a range of services including water heater repair and installation, water softener installation, repiping, and gas line installation. They specialize in water treatment solutions such as programmable water softeners and whole house carbon filtration to address issues related to hard water and chlorine in municipal water supplies.

5.0
276 Reviews
Gary The Plumber LLC.

Gary The Plumber LLC.

6214 N Oliver Ave, Boise, ID 83714

Gary The Plumber LLC is a plumbing service provider based in Boise, ID, offering a range of services including water heater installation, leak detection, and gas line installation. The company specializes in plumbing installations, repairs, and inspections for both residential and commercial clients. They have expertise in installing and repairing gas lines safely and in compliance with regulations. With decades of experience, Gary The Plumber LLC emphasizes eco-friendly plumbing solutions to help conserve water and energy. They also provide 24/7 emergency plumbing services to address urgent needs promptly.

5.0
161 Reviews
Kellogg Plumbing

Kellogg Plumbing

boise

Kellogg Plumbing is a family-owned plumbing company serving Boise, ID, and the surrounding areas. With over 15 years of experience, they offer a wide range of services including water heater installation, repair, and replacement, as well as sewer line inspection, repair, and installation. They also handle water line and gas line installations, backflow preventer services, and general plumbing maintenance. Kellogg Plumbing is backflow-certified and licensed, providing professional and careful service to local properties.

5.0
123 Reviews
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Understanding Idaho's Gas Line Regulations

In Idaho, all gas line work is governed by the state-adopted Idaho Fuel Gas Code, which is based on the International Fuel Gas Code (IFGC) 1 2. Local municipalities often have additional amendments or requirements, so compliance is a two-tiered process. The primary rule is that only licensed professionals-specifically licensed HVAC or plumbing contractors-are legally permitted to install, extend, or repair gas piping systems 1 3. This licensing ensures the technician has the training to handle the inherent dangers of combustible gas.

The cornerstone of these regulations is the permit and inspection process. A permit is required for nearly all gas line projects, excluding very minor repairs that don't involve replacing valves or sections of pipe 1 4. The permitting authority is your local city or county building department. They review the proposed work to ensure it meets code before issuing a permit, which then triggers mandatory inspections.

The Permit and Inspection Process

Navigating the permit process is a critical step your licensed contractor will manage. Here's what it typically entails in Idaho:

  1. Application: Your contractor submits details of the project, including appliance load calculations and piping diagrams, to the local building department.
  2. Permit Issuance: Once approved, a permit is issued, and fees are paid. These fees vary by municipality but often range from $50 to $150 or more 5 6.
  3. Rough-In Inspection: After the new piping is installed but before it is concealed within walls or under floors, an inspector will visit. The contractor must perform a pressure test, where the system is sealed and pressurized (often to 20 PSI for 20 minutes) to prove there are no leaks 1 7 8.
  4. Final Inspection: After the gas line is connected to the appliance(s) and all components are in place, a final inspection is conducted. The inspector verifies proper support, correct materials, adequate shut-off valves, and safe clearances 7.

Skipping permits and inspections is illegal and extremely risky, potentially voiding your homeowner's insurance and creating serious safety hazards.

Step-by-Step: A Professional Gas Line Installation

A professional gas line installation follows a meticulous sequence to ensure safety and longevity.

  • Planning and Load Calculation: A contractor first determines the total gas demand (in BTU/h) of all appliances the line will serve. This dictates the size (diameter) of the pipe needed to maintain adequate pressure 1 9.
  • Route Planning: The safest and most efficient path from the gas meter or propane tank to the appliance is mapped, considering obstacles, clearances from electrical lines, and future accessibility.
  • Material Selection: Only approved materials can be used, typically black iron pipe, corrugated stainless steel tubing (CSST), or approved flexible connectors. All fittings and pipes must bear manufacturer identification showing they meet standards 10 11.
  • Installation: The pipe is cut, threaded, and assembled with proper supports and fittings. A dedicated shut-off valve is installed at the connection point for each appliance 9 10.
  • Pressure Testing: As required for inspection, the system is pressurized with air and monitored with a gauge to confirm it holds pressure, indicating no leaks 1 7.
  • Appliance Connection & Purging: Once the system passes inspection, the contractor makes the final connection to the appliance. They then purge air from the line by briefly allowing gas to flow into a controlled environment before igniting the appliance 9.

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Key Safety Standards and Best Practices

Idaho's fuel gas code enforces several specific safety practices that professionals must follow:

  • Leak Detection: After installation and during any repair, technicians use approved methods like a soap solution bubble test or electronic leak detectors to check every connection 9 11.
  • No Interconnection: Piping systems supplied by different gas meters (e.g., in a duplex) must never be interconnected 11.
  • Proper Identification: Gas lines must be identified with labeling, especially if they are run in areas where they could be confused with other utilities 11.
  • Appliance Venting: The code also strictly regulates the venting of gas appliances to prevent carbon monoxide buildup indoors 10. A gas line installation often involves verifying that appliance vents are up to code.

Cost Considerations for Idaho Homeowners

The cost of gas line work in Idaho depends heavily on the project's complexity. While prices can vary by region and contractor, here are general guidelines:

  • Basic Gas Line Run: For a straightforward extension of less than 25 feet to a single appliance (like running a line for a new fireplace), you might expect costs in the range of $300 to $700 for labor and materials 5 12.
  • Complex or Long Runs: Installing a new line from the meter to a kitchen on the opposite side of the house, requiring wall penetration, longer pipe runs, and more labor, can range from $800 to $2,000 or more 5 12.
  • Permit Fees: As noted, budget an additional $50 to $150+ for the required local permit fees 5 6.
  • Major Factors Influencing Cost: The primary cost drivers are the total length of pipe, the difficulty of the route (e.g., drilling through foundation vs. open basement), local labor rates, and the type of pipe material used (CSST is often more expensive than black iron) 12.

Always get detailed, written estimates from multiple licensed contractors that break down material, labor, and permit costs.

Choosing the Right Licensed Professional in Idaho

Given the safety and legal requirements, selecting the right contractor is paramount.

  • Verify License: Always ask for and verify the contractor's Idaho state license number for HVAC or plumbing. This can often be checked online through the Idaho Division of Occupational and Professional Licenses (DOPL).
  • Check Insurance: Ensure they carry both liability insurance and worker's compensation.
  • Ask About Permits: A reputable professional will always pull the required local permits and schedule inspections. Be wary of any contractor who suggests skipping this step to "save money or time."
  • Get References: Ask for references from recent gas line projects and follow up on them.
  • Review the Contract: The contract should detail the scope of work, materials to be used, total cost, payment schedule, and a timeline that includes permit acquisition and inspection phases.

Frequently asked questions

Sources

Footnotes

  1. Gas Line Installation: What You Need to Know Before Starting Your Project - https://www.pasoroblesheating.com/gas-line-installation-what-you-need-to-know-before-starting-your-project/ 2 3 4 5 6

  2. CHAPTER 15.24 GAS INSTALLATION CODE - https://codelibrary.amlegal.com/codes/pocatelloid/latest/pocatello_id/0-0-0-6490

  3. rules governing installation of heating, ventilation - DOPL (idaho.gov) - https://dopl.idaho.gov/wp-content/uploads/2022/07/HVAC-ZBR-6_28_22-with-comments.pdf

  4. 15.24.010: APPLICABILITY OF GAS INSTALLATION CODE: - https://codelibrary.amlegal.com/codes/pocatelloid/latest/pocatello_id/0-0-0-6498

  5. Gas Line Installation in Nassau County | Minutemen Sewer & Drain - https://minutemenseweranddrain.com/long-island-plumber/why-professional-gas-line-installation-is-essential-for-nassau-long-island-homes/ 2 3 4

  6. What Installation Costs to Expect for a 74-Gallon State ProLine Gas Water Heater in 2025 - https://thefurnaceoutlet.com/blogs/videos/what-installation-costs-to-expect-for-a-74-gallon-state-proline-gas-water-heater-in-2025 2

  7. Gas, HVAC, & Propane Tank Inspections - Valley County - https://www.co.valley.id.us/departments/Building/GasHVACPropane 2 3

  8. 'M ORDINANCE NO, 145 AN ORDINANCE TO PROVIDE FOR STANDARDS AND REGULA- TIONS PERTAINING TO LIQUIFIED Al"!D NATURAL GAS DIS - https://www.kunacity.id.gov/DocumentCenter/View/6517/145-Standards-and-Regulations---Liquefied-and-Natural-Gas-PDF

  9. Gas Line Installation | Quality Plumbing - https://qualityplumbing.cc/gas-line-installation-what-homeowners-need-to-know/ 2 3 4

  10. Chapter 24 Fuel Gas: 2017 Idaho Residential Code | UpCodes - https://up.codes/viewer/idaho/irc-2012/chapter/24/fuel-gas 2 3

  11. Chapter 4 Gas Piping Installations: Idaho Fuel Gas Code 2018 - https://up.codes/viewer/idaho/ifgc-2018/chapter/4/gas-piping-installations 2 3 4

  12. Foot by Foot: Understanding Gas Line Installation Costs - https://jollyplumbing.com/gas-line-installation-cost-per-foot/ 2 3