What We Do

With 20 years of experience, we’re well equipped to help supply all of your HVAC needs —whether it’s maintenance and repair of an existing system or design and installation of a new one.

We proudly sell and service Comfortmaker, Lennox, and Trane heating and cooling equipment. And our technicians can service any make and model of equipment (excluding window units).

Residential or commercial, large or small, let us help you maximize the comfort and climate efficiency of your home or business.

New systems

A good HVAC system will do more than simply keep you warm in the winter and comfortably cool in the summer. Properly installed and regularly serviced, it will actually save you money!

We can custom design and install complete heating and air conditioning systems in both new homes and businesses. We carry dependable, high quality Trane air conditioning and heating products. Let us create the HVAC solution that’s right for your needs!

Our services include:

  • Installation of high efficiency HVAC systems, including equipment, ductwork, refrigerant piping, low voltage wiring and drain lines.
  • Heat gain/loss calculations for properly-sized equipment and ductwork.
  • Cost analysis of most efficient equipment usage.

Retrofitting existing systems

Take advantage of advances in HVAC technology and materials by letting us retrofit your existing home or commercial equipment to maximize efficiency, increase safety and reduce cost.

Our EPA-certified technicians can:

  • Upgrade your current system to a new high efficiency one.
  • Replace antiquated systems with state-of-the-art comfort systems with variable-speed motors and 2-stage condensers.
  • Renovate deteriorating duct systems and install properly-sized ductwork to provide even temperatures throughout the building.
  • Install programmable, easy-to-use thermostats to reduce energy consumption.

Commercial Refrigeration

Whether you’re running a grocery store, convenience store or restaurant, your refrigeration system is vital to your business. If it’s not working, you may not be, either. It’s a gamble you can’t afford to take.

Let our experienced, expert service technicians keep your commercial refrigeration system running smoothly. We can schedule regular maintenance checks — and we’ll be there if you need repairs done quickly and correctly.

If you’re in the market for a new or retrofitted commercial refrigeration system, give us a call. We’ll help you choose the best fit for your needs and budget.

Electrical Services

We can repair and install anything electric in your home or office. Our electricians are licensed by the State of Texas and are highly skilled and trained. With our expert knowledge and superb customer service, you’ll call 7M Fabrication your Favorite Big Bend Electrician! For more information about our electrical service, click here.

Products and Services

We offer a wide range of HVAC commercial and residential products and services, including:


  • New construction (equipment and ductwork)
  • Remodeling and retrofitting (equipment and ductwork)
  • Equipment replacement (Trane high efficiency air conditioning and heating equipment)
  • Service of all major brands of equipment (excluding window units and floor furnaces)
  • Duct repair and replacement
  • Regular Service Maintenance Program
  • Carbon monoxide testing
  • Air balancing
  • Commercial refrigeration
  • Rewire homes
  • Electrical service upgrades
  • Breaker box replacement
  • Install ceiling fans and other electrical fixtures


  • Trane air conditioners and furnaces
  • Trane electronic air filters
  • Trane media air filter enclosures
  • Trane replacement air filters
  • Programmable thermostats (Chronotherm IV)
  • Digital non-programmable thermostats
  • Electronic air filters
  • Replacement media air filters
  • Spaceguard replacement air filters
  • 1-inch and 2-inch throw-away filters (case only), fiberglass or pleated
  • Horizontal auxiliary drain pan with float switch
  • Safe-T-Switches for condensate drains
  • Ultraviolet air purifiers
  • Kohler Whole House, Backup Generators
  • Siemens and Square D Breaker panels

Questions? Don’t see what you want? Feel free to contact us to find out more!