Gas Services

Gas Line Installation in Trenton & Quinte West

Gas line work in Ontario must be performed by a TSSA certified gas technician. Johnston Mechanical HVAC LTD installs and extends gas lines for appliances, BBQs, fireplaces, generators, and new construction across Trenton, Quinte West, Belleville, Brighton, and surrounding communities. Brandon Johnston holds TSSA certification FS-R-52252 and personally oversees every gas line job.

Whether you are adding a gas range, connecting a BBQ on the deck, running a line to a new fireplace, or roughing in gas for a new home in Quinte West, the work must be done by a licensed gas technician and pressure-tested before any appliance is connected. Brandon handles the full scope — from sizing the line to the final pressure test and connection.

Gas line sizing is not guesswork. The line must be sized to deliver adequate pressure and flow to every appliance connected to it, accounting for the total BTU demand and the length of the run. An undersized gas line causes appliances to underperform, leads to pressure drops during peak demand, and can cause nuisance shutdowns on high-efficiency equipment like Navien tankless water heaters and condensing furnaces.

For new construction in Trenton, Quinte West, and Brighton, Johnston Mechanical handles the full gas rough-in — meter connection, main trunk, and branch lines to each appliance location. Brandon coordinates with the builder to ensure the rough-in is completed at the right stage and that all lines are properly supported, protected, and accessible for future service.

For existing homes, Brandon can extend your current gas system to reach a new appliance location, add a dedicated line for a BBQ or outdoor kitchen, or run a line to a garage or workshop. He assesses your existing meter capacity and main line size before any work begins to confirm the system can handle the additional load.

All gas line work by Johnston Mechanical is pressure-tested before any appliance is connected. Brandon uses a calibrated gauge to hold the line at test pressure and confirms there are no leaks before signing off on the installation. This is not optional — it is the standard that protects your family and your home.

Gas line work is one area where hiring an uncertified contractor creates serious liability. If a gas leak or fire occurs and the work was not done by a TSSA certified technician, your insurance may not cover the damage. Brandon is fully certified and carries the documentation to prove it.

What's Included

  • Site visit and written quote
  • Gas line sizing calculation
  • Supply and installation of gas piping
  • Meter connection coordination
  • Branch lines to appliance locations
  • Pressure test and leak check
  • Appliance connection and commissioning
  • 5-year labour warranty
  • TSSA certification documentation

How a Job Goes

  1. 1

    Site Assessment

    Brandon visits your home in Trenton, Quinte West, Belleville, or Brighton to assess your existing gas system, meter capacity, and the routing options for the new line.

  2. 2

    Written Quote

    You receive a detailed written quote after the site visit. The quote covers materials, labour, and any meter or main line upgrades identified during the assessment.

  3. 3

    Installation

    Brandon installs the gas line, properly supports and protects the piping, and connects to the existing system. No subcontractors — Brandon does the work.

  4. 4

    Pressure Test

    The completed line is pressure-tested with a calibrated gauge. Brandon holds the line at test pressure and confirms there are no leaks before any appliance is connected.

  5. 5

    Appliance Connection & Commissioning

    Once the line passes the pressure test, Brandon connects the appliance, confirms proper operation, and walks you through the installation.

Service Area

Johnston Mechanical serves Trenton, Quinte West, Belleville, Brighton, Frankford, Stirling, and Campbellford for gas line installation. We also serve surrounding communities in Hastings County and Prince Edward County. Call (613) 827-8973 to discuss your project and confirm availability.

Warranty

All gas line installations by Johnston Mechanical include a 5-year labour warranty. Brandon stands behind his work — every installation is pressure-tested and documented before the job is considered complete.

Frequently Asked Questions

Do I need a TSSA certified technician to install a gas line in Ontario?

Yes. In Ontario, all gas line installation and modification work must be performed by a TSSA certified gas technician. This applies to new lines, extensions, and appliance connections. Brandon holds TSSA certification FS-R-52252 and provides documentation with every job.

Can you run a gas line to my outdoor BBQ or deck in Trenton?

Yes. Running a dedicated gas line to an outdoor BBQ or kitchen is one of the most common gas line jobs Johnston Mechanical handles in Trenton and Quinte West. Brandon will assess the routing from your meter or main line, size the line for your BBQ demand, and install a proper shutoff valve at the connection point.

How do I know if my existing gas line can handle a new appliance?

Brandon checks your meter capacity and main line size during the site visit and calculates whether the existing system can handle the additional BTU load. If an upgrade is needed, it will be included in the written quote before any work begins. You will never discover a capacity problem after the fact.

What Our Customers Say

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Alandra Emerson

October 19, 2026

Would 100% recommend Brandon, I called him in a panic with a newborn and a heat pump system that wasn't cooling our house in the middle of August, after another company gave us a ridiculous quote. He got it done for half and came the same day I called. Thank you so much.

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Rijax Bloodmore

October 19, 2026

Realized my furnace went dead and made the call, had a technician in in a few hours and they found the issue had the part ordered and was installed the next day, professional kind and quick 10 out of 10 would use again.

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Scott Marshall

October 18, 2026

We are new to our home, and weren't sure who to call for an outage with our home heating and cooling system. We found Johnston mechanical through an online search, and are very glad we we contacted them. They were honest, dependable, and fixed up our system in a professional manner. I highly recommend this business to others!

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trevor roffey

October 17, 2026

Johnston Mechanical HVAC installed a radiant natural gas heater in my garage. They were professional, punctual, competitively priced and had a clean job site. Additionally, he took the time to answer my questions and explain the process. Would recommend

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Get a Written Quote — No Obligation

Pricing is provided after a site visit. No made-up numbers over the phone — just an honest assessment from a TSSA certified technician.