Residential Replacement and Upgrades

If you need to replace or upgrade your current system for your home give us a call for an estimate. We have several options available from Heil Furnace and Air Conditioning Systems to Mitsubishi or Fijitsu Systems.  We also have Unit Heaters for your Garage or Home Shop Space.

Builders Information

Brennan Heating and Cooling provides information to Builders pertaining to new construction.  Cost Estimate – Ductwork Design – Sizing of Mechanical Equipment – Options for Upgrades/More Sophisticated H.V.A.C. Systems.

Commercial Fabrication and Installation

Small Commercial to Large Commercial projects we do it all.  Our crew has the knowledge and skill to take your project from beginning to end.  We have a wide variety of buildings and industries we have installed the Mechanical Systems on.

* Sales * Reliable Service * Sheet Metal Work * Commercial and  Residential * Free Estimates in Great Falls

Brennan Heating and Cooling Inc. takes pride in serving Great Falls Montana and the surrounding communities.  With years of experience and state of the art technology, Brennan is second to none for quality and craftsmanship.

We offer a variety of HVAC services that appeal to both the homeowner and commercial businesses.  From free estimates to custom designed systems, Brennan is there for you, from beginning to end.  We also offer additional support services such as sheetmetal work, indoor air quality systems and we are licensed for gas piping.  Brennan Heating and Cooling Inc. is fully insured and bondable, for your added protection.

We are proud to offer Heil® heating and cooling systems.  Heil® products includes the extra care and technology to create quiet operation for your home. From design to operation, sound reduction ensures a comfortable experience with your heating and cooling systems.

Electrostatic Air filters, Air to Air Exchangers, Humidifiers, Garage Unit Heaters, Mini-Split Air Conditioning Systems, Programmable and Wi-Fi Thermostats are some of the other products we carry and install.

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Next Steps…

Call us today to find out more information on how we may assist you.