Plumbers and Pipefitters Local 189 is a construction company based out of United States.

Hoff Heating and A/C offers complete solutions for all of our customers. Our service department will diagnose, repair and maintain your home's heater, furnace, air conditioner, and air quality equipment of all makes and models. Our replacement department offers equipment that will answer all of your indoor comfort needs. Whether you are building your dream home or you are a contractor developing a subdivision, our new construction department will provide you with heating and cooling solutions for every situation.

Sheppard, Morgan & Schwaab, Inc. (SMS) is a Civil Engineering and Land Surveying firm based in Alton, Illinois. SMS has provided professional services for 130 years for clients primarily in the Illinois Counties of Calhoun, Jersey, Macoupin, Madison and St. Clair and the Missouri Counties northwest of St. Louis. SMS can trace its history back to 1892 when Mr. C. A. Sheppard began the practice of Land Surveying and Civil Engineering. Over the years SMS has developed an excellent professional reputation and long term client relationships. The personal attention afforded each project by the firm’s key employees helps insure total project coordination and success. This tradition continues under the leadership of Mr. Charles Arthur (CAS) Sheppard, President of the firm and fourth generation in the Sheppard family. SMS was awarded the Southern Illinois University Edwardsville’s School of Business 2001 Mississippi Valley Family Business of the Year Award and again was recognized as the 2001-2002 National MassMutual Family Business of the Year, Small Business Category (under 50 employees). SMS currently employs 27 engineers, surveyors, technicians and administrative personnel. Three full time field parties perform route surveys, lot and acreage surveys and data gathering. Nine registered professionals in engineering and land surveying provide engineering and surveying services to ensure project success and client satisfaction.

In business for more than 40 years, Langendorf Supply provides customers with exceptional HVAC systems knowledge to meet their project requirements. Representing global HVAC manufacturers, Langendorf’s product lines support the latest energy, sustainability, and comfort standards. Sales and application engineers focus on customers’ needs and industry changes—building codes, energy-efficient technology, human health and safety, and capital and operational costs. Langendorf Supply offers prompt, problem-solving expertise for design and construction professionals. Langendorf Supply products include grilles, registers, diffusers, VAV and fan terminal units, chilled beams, fan coils, blower coils, custom air handlers, fire dampers, fire/smoke dampers, louvers, control dampers, air measuring systems, controls, rooftop package and split systems, VRF systems, spiral duct and fittings and many other related products. Langendorf Supply serves Mid and Eastern Missouri, Central and Southern Illinios, and Indiana.

WINDOW WORLD OF ST. LOUIS, INC. is a company based out of 13892 ST CHARLES ROCK ROAD, BRIDGETON, Missouri, United States.

Air Comfort Service, Inc. is a family owned and operated residential and commercial heating and cooling company celebrating our 50th Anniversary of serving the Greater St. Louis area! We offer the following services: -heating -cooling -indoor air quality (humidifiers, air cleaners, uv lights) -ductless systems -water heaters -maintenance plans -Aeroseal duct sealing We provide: -24 hour emergency service -service for all makes and models -free estimates for new equipment -0% financing for those that qualify Get in your comfort zone with Air Comfort Service, Inc. Heating & Cooling!

Electric Controls Co is an electrical/electronic manufacturing company based out of 2735 Mercantile Dr, St Louis, MO, United States.

Kay Bee Electric Company Inc is a construction company based out of 250 Rue Saint Francois, Florissant, Missouri, United States.

The PaintSmiths of St. Louis, Inc. is a family-owned, union painting contractor based in St. Louis, Missouri. Established in 1963, PaintSmiths is now in its second generation of leadership with 50 years of quality and experience. Today, PaintSmiths competes in the commercial, industrial, high-end residential, special finishes, and wallcovering sectors of the finishing industry across the United States, with job locations including Alaska, Hawaii, Maine, and even Puerto Rico. This company finds pride in offering a variety of services while holding both safety and quality as priorities.

EHRLICHS INSTALLATION & SERVICE, INC is a construction company based out of 5995 HOWDERSHELL RD, Hazelwood, Missouri, United States.

RJI Sales is a manufacturer’s representative of specialized commercial and industrial HVAC equipment, founded in 1974. Since then, RJI has grown to offer a full range of products and services focused on HVAC and Green Engineered Solutions. We take pride in delivering a Total Engineered Solution for our clients. Our HVAC/Environmental Solutions are designed to the highest standards and feature innovative products to deliver a custom solution resulting in reduced operating costs and increased productivity.

CORRECTIVE ASPHALT MATERIALS, LLC is a construction company based out of 300 DANIEL BOONE TRAIL, SOUTH ROXANA, Illinois, United States. Treating asphalt in Louisiana, Mississippi, Alabama, Arkansas, Illinois, Iowa, Wisconsin and Minnesota. We work with the public works departments for cities, towns, townships and villages, the Department of Transportation, commercial campuses and homeowners’ associations.