Bieg
Bieg Plumbing & Mechanical is a St. Louis-based commercial mechanical services provider offering HVAC, refrigeration, plumbing, sheet metal, and building automation to commercial, industrial, grocery, restaurant, and healthcare customers across the Midwest.
- Company typePrivate
- Founded1900
- HeadquartersDes Moines, United States
- Headcount101–250
- GTM typeB2B
- OfferingServices
What Bieg does
Bieg Plumbing & Mechanical is a St. Louis, Missouri-based mechanical services contractor that merged with Marick Mechanical in October 2025 to form a combined multi-trade services platform operating across the Midwest. The company delivers HVAC, commercial refrigeration, plumbing, sheet metal fabrication, building automation controls, and preventative maintenance to commercial and industrial facility customers. Its service footprint spans St. Louis, Omaha, Des Moines, Cedar Rapids, Sioux City, and Wichita.
The company's revenue model is built on a combination of project-based installation work and recurring preventative maintenance contracts typical of the mechanical contracting industry. Customer segments are diversified across Grocery & Retail, Commercial & Industrial Facilities, Restaurants, and Healthcare, with a Residential service line retained in the St. Louis market. In-house sheet metal fabrication capability supports the HVAC and architectural metals business, while building automation extends the offering into integrated controls work. The business is family-led under the Bieg family — Joan Bieg (founder), Robert Bieg (President), and Mark Bieg (VP & CFO) — and is privately held with no public financial disclosures available.
Bieg firmographics
Firmographics- Name
- Bieg
- Legal name
- Bieg Plumbing Company
- Website
- https://biegplumbing.com
- Company type
- Private
- Founded year
- 1900
- Operating status
- Acquired
- Headcount range
- 101–250 employees
- Short description
- Bieg Plumbing & Mechanical is a St. Louis-based commercial mechanical services provider offering HVAC, refrigeration, plumbing, sheet metal, and building automation to commercial, industrial, grocery, restaurant, and healthcare customers across the Midwest.
- Ownership category
- akta.pro rank
Bieg industry classification
Industry- Product category
- Commercial Mechanical Services
- NAICS
- Plumbing, Heating, and Air-Conditioning Contractors (23822)
- SIC
- Refrigeration & Service Industry Machinery (3580)
- akta.pro primary industry
- Plumbing & Pipefitting Contracting (IMAFALAC)
- akta.pro secondary industry
- Industrial/Process Piping & Mechanical Contracting (IMAFALAG)
Keywords
Where Bieg is headquartered
LocationHeadquarters
- HQ city
- Des Moines
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
Bieg business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Marketing or Sales, Technology or R&D, Infrastructure
Revenue model
- Commercial Mechanical Services: Revenue generated from providing heating, air conditioning, HVAC installation and repair, plumbing services, and mechanical solutions to commercial and residential clients in the St. Louis area.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Customized maintenance programs tailored to facility needs |
Go-to-market motion1 record
Distribution channels3 records
Marketing channels3 records
Bieg product offering
Product offeringCore offering
Bieg Plumbing & Mechanical provides commercial HVAC, refrigeration, plumbing, sheet metal fabrication, building automation, and preventative maintenance services to commercial, industrial, and residential clients in the St. Louis metro area. The company operates as Marick Mechanical's St. Louis location following an October 2025 acquisition, leveraging multi-location Midwest resources (St. Louis, Des Moines, Omaha, Cedar Rapids, Sioux City, Wichita) while maintaining local service delivery and the existing team.
Product overview
Bieg Plumbing & Mechanical operates as a full-service commercial mechanical contractor offering integrated HVAC, refrigeration, plumbing, sheet metal fabrication, building automation, equipment sales, and preventative maintenance services. The company rebranded from Bieg Plumbing Company in 2025 and partnered with Marick Mechanical to expand resources. Services are delivered through multiple Midwest locations (St. Louis, Des Moines, Omaha, Cedar Rapids, Sioux City, Wichita) with 24/7 emergency support. Core offerings include Commercial HVAC Services, Commercial Refrigeration Services, Commercial Plumbing Services, Sheet Metal Fabrication (with in-house Omaha shop), Building Automation & Controls Services, Design/Build Construction, and Mechanical Equipment Sales, all supported by Preventative Maintenance Programs. Specialized sub-products include Grocery Store Refrigeration and St. Louis Residential Plumbing.
Differentiator
Problem solved
Functional benefit
Products and services
- Commercial HVAC Services Commercial HVAC installation, repair, system replacement, and preventative maintenance for businesses throughout the Midwest, supporting efficient and reliable heating, cooling, and ventilation.
- Commercial Refrigeration Services Commercial and industrial refrigeration installation, repair, maintenance, and emergency services including walk-in coolers, freezers, rack systems, and CO2 refrigeration for grocery, food service, and industrial facilities.
- Commercial Plumbing Services Full-service commercial and industrial plumbing including fixture installation, repairs, drain cleaning, sewer services, water heater solutions, backflow prevention, and gas piping for facilities across the Midwest.
- Sheet Metal Fabrication Custom sheet metal fabrication in Omaha including roof flashing, chimney components, curb adapters, grease duct systems, and HVAC ductwork for commercial and industrial projects.
- Building Automation & Controls Services Building automation system (BAS) installation, integration, and maintenance connecting HVAC, lighting, and building systems through centralized platforms with web-based and IoT-enabled monitoring.
- Design/Build Construction Services End-to-end design/build mechanical construction services for refrigeration, HVAC, sheet metal, plumbing, electrical, and building control systems from concept to completion.
- Mechanical Equipment Sales Commercial HVAC and refrigeration equipment sales partnering with leading manufacturers, offering personalized consultation, detailed quotes, and competitive pricing for replacements and new installations.
- Preventative Maintenance Programs Customized preventative maintenance programs for HVAC, plumbing, and refrigeration systems designed to reduce downtime, lower energy costs, extend equipment life, and prevent unexpected failures.
- Grocery Store Refrigeration Specialized grocery refrigeration services including rack systems, walk-in freezers and coolers, preventative maintenance partnerships, and emergency support for grocery operations.
- St. Louis Residential Plumbing Residential plumbing services exclusively available in the St. Louis area, including repairs, water heater services, drain cleaning, fixture installation, and emergency plumbing support.
Quantifiable outcome
- Reduced equipment breakdowns through preventative maintenance programs
- +2 more outcomes
Companies that use Bieg
Customer profileSegments5 records
Ideal customer profiles5 records
Bieg technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature3 records
Bieg partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- Marick MechanicalcoreBieg Plumbing Company rebranded as Bieg Plumbing & Mechanical and partnered with Marick Mechanical to provide more comprehensive resources for residential and commercial clients in St. Louis. The partnership expanded service offerings to include heating, air conditioning, and HVAC installation and repair in addition to plumbing. Bieg has joined Marick Mechanical with the same team providing the same service under the new name.
Scale indicators2 records
Recent moves7 records
Expansion highlights4 records
Bieg competitors and assessment
Company assessmentBroad incumbents
- IES Holdings: National provider of electrical and mechanical infrastructure services for commercial, industrial, and residential customers. Overlapping scope in HVAC, plumbing, and controls with a comparable multi-location service delivery model.
- EMCOR Group: Largest publicly traded U.S. mechanical and electrical services contractor offering HVAC, plumbing, refrigeration, and building automation across commercial and industrial markets. Comparable as a national platform spanning the same core trade services Marick delivers at regional scale.
- APi Group: Diversified specialty services holding company with mechanical, life safety, and specialty industrial services. Comparable as a multi-trade services consolidator pursuing growth through M&A across commercial and industrial end markets.
- Comfort Systems USA: National commercial HVAC, plumbing, and mechanical services contractor with a network of operating subsidiaries. Directly comparable service mix (HVAC, plumbing, controls) and recurring maintenance focus make it a close analog to Marick's commercial mechanical platform.
Regional players
- TDIndustries: Privately held Texas-based mechanical contractor delivering HVAC, plumbing, and building services to commercial customers. Comparable integrated service model and family-owned/private governance structure, serving a different regional geography.
- Murphy Company: St. Louis-based mechanical contractor providing HVAC, refrigeration, plumbing, and process piping services across the Midwest. Directly comparable integrated mechanical services platform competing in the same St. Louis market as Marick's location.
- U.S. Engineering: Kansas City-based mechanical contractor specializing in HVAC, plumbing, and building automation for commercial and industrial clients. Comparable Midwest footprint, integrated MEP services, and design/build capabilities.
Direct peers
- Limbach Holdings: Specialty mechanical contractor focused on HVAC, plumbing, and building controls for commercial and institutional customers. Similar integrated service model, emphasis on design/build and recurring service revenue, and comparable vertical mix (healthcare, commercial, industrial).
Market position
Strengths4 records
Weaknesses4 records
Competitive moat4 records
Key risks5 records
Key highlights7 records
Customer concentration
Bieg social profiles
Digital presenceBieg financial estimates
Financial estimateRevenue estimate
Valuation estimate
Bieg leadership team
Management profileNumber of profiles
Profiles3 records
Bieg funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Bieg M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Bieg
What does Bieg do?
Bieg Plumbing & Mechanical provides commercial HVAC, refrigeration, plumbing, sheet metal fabrication, building automation, and preventative maintenance services to commercial, industrial, and residential clients in the St. Louis metro area. The company operates as Marick Mechanical's St. Louis location following an October 2025 acquisition, leveraging multi-location Midwest resources (St. Louis, Des Moines, Omaha, Cedar Rapids, Sioux City, Wichita) while maintaining local service delivery and the existing team.
Is Bieg a public or private company?
Bieg is a private company. It is classified as corporate owned and is currently acquired.
When was Bieg founded?
Bieg was founded in 1900. It employs 101 to 250 people.
Where is Bieg based?
Bieg is headquartered in Des Moines, United States, in the North America region.
How does Bieg make money?
One revenue line is on record: commercial Mechanical Services.
Who are Bieg's main competitors?
Broad incumbents on record are IES Holdings, EMCOR Group, APi Group and Comfort Systems USA. Regional players are TDIndustries, Murphy Company and U.S. Engineering. Limbach Holdings is listed as a direct peer.
Does Bieg have an API?
No public API is recorded for Bieg.
What industry is Bieg in?
Bieg's product category is Commercial Mechanical Services. Its primary akta.pro industry code is IMAFALAC, Plumbing & Pipefitting Contracting, with a secondary code of IMAFALAG, Industrial/Process Piping & Mechanical Contracting. Its NAICS code is 23822 and its SIC code is 3580.