Even the most minor changes in commercial space demand the attention of a mechanical engineer. Facility safety wears a myriad of hats in Jefferson City. The responsibilities to ensure fire protection, healthy indoor air quality, and energy conservation are ongoing in a commercial building.

Learn why renovations, new equipment and offensive odors demand the support a mechanical engineer.

Interior Renovations

Mechanical engineers licensed in Jefferson County design ventilation systems according to the projected occupancy, type of HVAC system and building equipment. Even when an unused area is renovated or repurposed to accommodate workers, a mechanical engineer has to ensure that the buildings HVAC system has the proper ventilation for comfort and indoor air quality.

Energy conservation and comfort embody another facet of space planning to take into consideration. Placement of a thermostat, cubicles, partitions and other furniture have the ability to influence ventilation, energy efficiency as well as indoor air quality.

For commercial building renovations and space planning, Hoffmann Brothers mechanical contractors offer advice to uphold safety and energy conservation.

New Furniture Office Equipment

Printers, sofas, and certain furniture textiles contain elements which can affect good indoor air quality. For instance, a new copier machine may call for better ventilation or a cooler temperature than other spaces of an office building. Consult a mechanical contractor to determine if there are any safety and ventilation issues to amend with new equipment.

Exterior Lingering Smells

In the summer, outside pollutants have a way of seeping into office buildings in Jefferson City. Because many mechanical HVAC systems typically deliver some exterior air, harsh odors can ruin indoor comfort levels. A mechanical engineer can amend an unsavory smells through the ventilation system and the appropriate air filtration system to control noxious fumes.

Please dial 314.664.3536 for assistance in your renovation, new equipment or other mechanical specifications.


In the restaurant and food manufacturing industries, refrigeration is just as critical as the food prepared for consumption. Food quality becomes unsavory without solid refrigeration. Restaurants in Jefferson and St. Louis County face great uncertainty as commodity prices, minimum wage hikes, and other federally mandated energy laws could all impact the industries profits and losses.

Restaurants in Jefferson and St. Louis County tend to purchase food in bulk supply. While most chef and kitchen staff follows the best standards in food safety, freezers, refrigerators and other commercial grade cooling systems can fall short.

“Especially during the sultry days in Jefferson and St. Louis County, when the temperature of a walk-in cooler or refrigerator fluctuates between freezing and non-freezing. This temperature fluctuation can be downright hazardous to food safety,” comments a refrigeration engineer of St. Louis Mechanical Contractors.

The Food and Drug Administration (FDA) regulates that freezers and coolers maintain a specified temperature to ensure safe food handling. So how does a restaurant or food manufacturer curtail energy without compromising food safety standards?

The U.S. Department of Agriculture (USDA) and Food Safety and Inspection Service (FSIS) institutes certain standards for safe food handling. For some restaurants and food packing companies, this means spending more in energy costs to remain in compliance with state and federal laws.

“Energy costs are not expected to dwindle anytime soon. In the restaurant and food packaging industry, recuperating energy costs is one of the few expenses that COOs and managers can control in Jefferson City and St. Louis,” points out an energy consultant.

The most rudimentary approach to food safety and energy conservation is a refrigeration check up. During an inspection, a mechanical engineer examines the coils, coolants and other parts of the HVAC system. Sometimes, a retrofit for the refrigeration system quells those additional costs.

Need a refrigeration inspection? Looking for ways to drive down energy costs without compromising food, employee and customer safety? Please call Hoffmann Brothers Mechanical Contractors at 314.664.3536.


What is the profile of a qualified mechanical engineer in the City of St. Louis? Occupant safety, code violations, and energy conservation embody three reasons why it’s critical to hire the most qualified mechanical contractor in St. Louis. When it comes to evaluating bid quotes and RFPs to maintain or design and build a new mechanical system, building engineers are often focused on the bottom line. 


A myriad of credential quantify a mechanical engineer’s expertise. The most important credential to evaluate is if a mechanical contractor is a licensed engineer instance. In example, Robert Hoffmann, founder of Hoffmann Brothers, holds a BS in mechanical engineering from the Missouri School of Science & Technology in Rolla, MO. To ensure that the Hoffmann Brothers staff upholds the highest standard in mechanical engineering, Mr. Hoffmann hires employees from local schools in Missouri (Ranken and Vatterott).


The American Society of Mechanical Engineers (ASME), the American Society of Heating, Refrigerating, and Air Conditioning Engineers (ASHRAE) are two organizations that a qualified mechanical contractor should belong, because these organizations establish benchmarks for energy conservation, manufacturing and installation standards.


In St. Louis City, Hoffmann Brothers garners a 40+ year reputation for designing and building mechanical systems. The mechanical contracting firm has been recognized by the Better Business Bureau (BBB) for its world class customer satisfaction.  The mechanical engineer company provides services for many small to large entities in southwest Missouri, including: Anheuser Busch, Edgewild Restaurant & Winery, St. Peters Catholic Church, biotechnology companies, Super 8 Motel, government buildings and office parks.


After hours, Hoffman Brothers’ Mechanical Contractors also serves as a philanthropic pillar of the St. Louis City community. The Missouri USO, Angel’s Arms, Children’s Miracle Network, St. Louis Stray Rescue, and breast cancer are a shortlist of organizations and causes that Hoffmann Brothers support.


Please visit St. Louis Mechanical Contractors for a complete list of services the company provides for commercial properties in St. Louis City. Please contact us at 314.664.3536 for a bid quote.


St. Charles, MO Mechanical Contractor Prescribes a Cure


Most of the labor force in St. Charles, MO has survived a harsh winter this year. From interior to exterior elements, the season has been fraught with slippery commutes and common culprit poor indoor air quality (IAQ). "Sick building syndrome continues to plague St. Charles MO workers with allergies, asthma as well as respiratory illnesses. Airborne viruses such as the flu spread like wildfire in the workspace with unhealthy IAQ," shares a spokesperson of Hoffmann Brothers Mechanical Contractors. 


Airborne contaminants spread easier in the winter. In the workplace, after a sick worker coughs or sneezes, this bacteria travels via dust particles. In environments with poor IAQ, these microbes linger, infecting healthy workers.


Why a healthy work environment is important

Work productivity corresponds to indoor air quality. Some business consultants calculate medical expenses and time off associated with sick employees for a third of workplace losses.


One study estimates that the total cost of poor indoor air quality amounts to $160 billion a year of the U.S. economy. However, poor IAQ is a curable situation.


How to cure poor indoor air quality?

Air filters serve as the best medicine prevention against poor indoor air quality. Commercial buildings filters require a replacement as it extends its final pressure drop.


Did you know?            

In St. Charles, Hoffmann Brothers provides healthy IAQ solutions for various types of commercial properties and the most recognized businesses.


To account for all the type of particle sizes, filters have to measure up to the ASHRAE 52.2 Test Standard, referred to as a Minimum Efficiency Reporting Value (MERV). With particle sizes, ranging from very fine to coarse, microns (under 2.5) are considered to be the most toxic particle in the workplace.


Need a prescription for your St. Charles MO building's IAQ? Please dial 314.664.3536 to schedule a house call.