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Gas Fitting Services


Corrugated Stainless Steel Tubing (CSST) is a flexible, stainless steel pipe used to supply natural gas and propane in residential, commercial and industrial structures.

Coated with a yellow, or in some cases, a black exterior plastic coating, CSST is usually routed beneath, through and alongside floor joists in your basement, inside interior wall cavities and on top of ceiling joists in attic spaces.

Benefits of CSST

CSST features many benefits over the traditional method in its durability and practicality. CSST has a proven resistance to leaks due to far fewer connections made during installation. When black pipe is installed, every time the pipe changes direction, a joint needs to be fitted and checked for leaks.

CSST offers flexibility and is able to be snaked through walls and around obstacles with fittings placed only at the ends of the run.
Another benefit of this new material is the amount of installation time it saves. By most estimates, CSST can be installed in a third of the time it takes to install black pipe. Even though CSST is more expensive than the traditional black steel pipe, its overall cost is less when factoring in labour and installation.

CSST should not be confused with natural gas appliance flexible connectors. Flexible connectors are used to attach “moveable” appliances to the gas piping system. CSST is typically routed beneath, through or alongside floor joists in the basement, inside interior wall cavities and on top of ceiling joists in attic spaces.

We have used CSST for many years and the main reason for this is its toughness and safety. Compared to copper gas lines the CSST will not kink or snap. We have seen many gas lines to appliances done with copper. When you remove the appliance to clean a few things can happen you must watch out for:


  • Kinking of the copper gas line which now reduces the amount of gas flow to the appliance.
  • Repeatedly bent copper will snap and you will be left with a raw gas leak until the shut off is turned off.
  • Smell gas, act fast!

Leave the building immediately and call FortisBC emergency line: 1-800-663-9911


We are consumers too, and no one wants or needs the sticker shock with a bill that you were not expecting… Before we start working on your job we speak to you about your exact needs and ensure clear pricing for your job, work doesn’t start until you feel that you completely understand what is going to take place.

We don’t keep you in the dark, we shine a spotlight on your services and help you understand our process every step of the way…


At Mills Mechanical our highly experienced, licensed and bonded technicians are exceptionally polite, clean cut and will show you & your home they show their own family and home.

We wear protective shoe covers when entering your home, utilize professional working are mats and clean up after ourselves ensuring with the care to attention and detail we put into all the work we perform…


We are professionals and take what we do incredible seriously, while taking extensive pride in the services we are able to offer ensuring the safety and well being of your family. We guarantee your satisfaction, it’s just that simple… We do the just right the first time, on-time and on budget….

If you’re looking for a new HVAC system, servicing or repair you owe it to yourself to speak to one of our professional’s today.

At Mills Mechanical we do not sub-contract out your job, we do it with pride ourself with our own highly experience and qualified licensed and bonded installers, technicians and trades people.

We guarantee your satisfaction and the job is done right the first time, on time and on budget

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