Gas-Fired Steam Boilers

  • GSB8-E Boiler

    GSB8-E Boiler

    Built with high-quality materials, including titanium burners and a cast …


Gas-Fired Water Boilers

  • GWB8-E Boiler

    GWB8-E Boiler

    Constructed of high-quality materials, including a cast iron heat exchanger …
  • GWB8-IE Boiler

    GWB8-IE Boiler

    The GWB8-IE boiler is full of features that provide years …
  • GWB9-IH Boiler

    GWB9-IH Boiler

    The GWB9-IH boiler offers an AFUE rating of 90%, which …
  • GWM-IE Boiler

    GWM-IE Boiler

    Designed to maximize fuel savings, the GWM-IE boiler delivers up …


Oil-Fired Water Boilers

  • COWB3 Boiler

    COWB3 Boiler

    Built with the finest quality components, including a Beckett® oil …

Energy Savings Calculator

See how much you could save with this nifty energy savings calculator from Lennox®.


Norman O.Cleburne, TX

I am extremely happy with the service I received from Southern Air. I loved their price and I really appreciated that they came when they said they would, I did the job precisely the way we discussed that it would be done.

Martha D.Fort Worth, TX

They were on time, delivered what was promised and my attic/house ended up cleaner that before they got there. They even took time to train me on the new electronic thermostat and provided a full year of service with my new system. I've recommended them to my neighbors who are going have them fix some shoddy installation on their system.

NeighborFort Worth, TX

High Standards, efficient, Good Price - Did everything exactly as quoted - no surprises.

Thada P.Crowley, TX

The salesman was knowledgeable, courteous and friendly. I received three different bids the difference between Southern Mechanical and the others was Overall Value and the best price. I even ended up replacing all my sheet metal old ductwork with new R-6 flex. You just can't beat caring attitude of the installers, office staff and my sales guy Jamie Wallace.

Patrick F.Milsap, TX

It was very professional.

Weldon H.Burleson, TX

Very satisfied with the equipment and speed of installation. They did a great job!

Ray D.Weatherford, TX

"Jamie came out to give an estimate, He was on time, professional and thorough. He was the first estimate I received and the best value after all estimates were evaluated. Hired Southern Air on Saturday and it was installed the following Tuesday. Installation crew was on time, quick and courteous. The job, estimate, install and outcome were all A++. Thanks Jamie and Wade."

Dalton T.Burleson, TX

They were great and may me feel comfortable. The same day I gave them the job, they install it that afternoon.

Dale J.Joshua, TX

They did a very good job. Showed up on time . Very reasonable. Some minor detail problems.

NeighborDallas, TX

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