SI Mechanical
SI Mechanical is a Buda, Texas-based commercial mechanical contractor providing HVAC and plumbing construction, in-house sheetmetal and piping fabrication, BIM coordination, and 24/7 service to enterprise, healthcare, education, and government customers across Central Texas.
- Company typePrivate
- Founded2012
- HeadquartersManchaca, United States
- Headcount101–250
- GTM typeB2B
- OfferingServices
What SI Mechanical does
SI Mechanical LLC is a commercial mechanical contracting firm founded in 2012 and headquartered in Buda, Texas, providing HVAC and plumbing installation, service, and maintenance to commercial, industrial, healthcare, education, and municipal customers across Central Texas. The company operates an in-house 24,000 SF fabrication facility (relocated in 2020) that produces sheetmetal ductwork, piping spools, spiral pipe (4" to 28"), and custom components, paired with in-house Building Information Modeling (BIM) coordination and clash detection. Delivery methods include hard bid, design-build, and design-assist, supplemented by 24/7 emergency dispatch, recurring service and maintenance contracts, and preconstruction planning.
The firm serves anchor customers across technology (Dell, PayPal, Samsung, eBay), healthcare (MD Anderson, St. David's Hybrid OR), higher education (University of Texas, Texas State University), and government/utilities (City of Austin, Austin Energy), with specialty experience in medical gas systems, cleanroom climate control, and industrial process piping. Revenue grew from under $500,000 in its first year to over $30 million by 2022 on 125 employees, more than 60x in a decade, funded entirely by organic operations with no external funding rounds disclosed.
SI Mechanical is a subsidiary of PremiStar, a multi-state commercial HVAC, building automation, and plumbing platform with 48 branches across 13 states and over 2,100 employees. The parent provides procurement scale, cross-region referral pipelines, and back-office infrastructure while SI Mechanical retains local execution autonomy in the Central Texas market. Pricing is quote-based and not publicly disclosed, and revenue is split between one-time construction projects, recurring service and maintenance contracts, and third-party fabrication sales.
SI Mechanical firmographics
Firmographics- Name
- SI Mechanical
- Legal name
- SI Mechanical LLC
- Website
- https://simechanical.com
- Company type
- Private
- Founded year
- 2012
- Operating status
- Operating
- Headcount range
- 101–250 employees
- Short description
- SI Mechanical is a Buda, Texas-based commercial mechanical contractor providing HVAC and plumbing construction, in-house sheetmetal and piping fabrication, BIM coordination, and 24/7 service to enterprise, healthcare, education, and government customers across Central Texas.
- Ownership category
- akta.pro rank
SI Mechanical industry classification
Industry- Product category
- Commercial Mechanical Contracting (HVAC and Plumbing)
- NAICS
- Plumbing, Heating, and Air-Conditioning Contractors (238220)
- akta.pro primary industry
- HVAC & Refrigeration Contracting (IMAFALAB)
- akta.pro secondary industries
- HVAC Installation, Service & Repair (IMAIABAA), Plumbing & Pipefitting Contracting (IMAFALAC)
Keywords
Where SI Mechanical is headquartered
LocationHeadquarters
- HQ city
- Manchaca
- HQ country
- United States
- HQ region
- North America
Offices2 records
Markets served
SI Mechanical business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Supply Chain, Operations, Infrastructure, Technology or R&D
Revenue model
- Construction Projects: One-time project-based revenue from HVAC and plumbing construction for commercial, industrial, healthcare, education, and municipal clients. Projects include new installations, tenant finish-out, renovations, and complex installations for cleanrooms, pharmaceutical, and industrial process facilities.
- Service and Maintenance Contracts: Recurring revenue from 24/7 HVAC and plumbing service and maintenance. Includes emergency service, preventive maintenance contracts, troubleshooting, backflow testing, and ongoing support for installed systems.
- Fabrication Sales: Fabrication is sold to the public - small orders can be completed in days, or can bid plan and spec projects. Products include sheetmetal specialties, air duct accessories, ductwork, and custom fabricated components shipped to customers.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Pay-as-you-go | Service and Maintenance - Custom quotes based on scope |
Go-to-market motion1 record
Distribution channels3 records
Marketing channels3 records
SI Mechanical product offering
Product offeringCore offering
SI Mechanical is a commercial mechanical contractor providing HVAC and plumbing construction, service, maintenance, and in-house custom sheetmetal and piping fabrication. The company serves commercial, healthcare, education, technology, industrial, and municipal clients across Central Texas using hard bid, design-build, and design-assist project delivery methods, complemented by 24/7 emergency service and preconstruction planning.
Product overview
SI Mechanical is a commercial mechanical contracting company providing integrated HVAC and plumbing services rather than a software platform. The company offers a unified portfolio of services organized around three core areas: HVAC Services (service, maintenance, and installation for commercial equipment), Plumbing Services (commercial plumbing repair and maintenance), and Construction Services (new construction and retrofit for commercial buildings). Supporting these core services, SI Mechanical provides Custom Fabrication (in-house sheetmetal and piping fabrication from their 24,000 SF facility in Buda, Texas), BIM and Clash Detection (in-house building information modeling to coordinate projects), and 24/7 Emergency Service. The company also offers Preconstruction Planning as an add-on to support project delivery. The service offerings are designed to work together, with the company handling everything from initial planning through fabrication and installation to ongoing maintenance and emergency service. SI Mechanical operates as part of PremiStar, a parent company with 48 commercial HVAC, building automation, and plumbing branch locations across 13 states.
Differentiator
Problem solved
Functional benefit
Products and services
- HVAC Services
Quantifiable outcome
- Grown from under $500,000 in first year to over $30 million in revenue over 10 years - more than 60x growth
- +1 more outcomes
Companies that use SI Mechanical
Customer profileNamed customers10 records
Segments5 records
Ideal customer profiles4 records
SI Mechanical technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature5 records
SI Mechanical partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- PremiStarcoreSI Mechanical is a subsidiary of PremiStar, which operates 48 commercial HVAC, building automation, and plumbing branch locations across 13 states with over 2,100 employees. SI Mechanical serves as one of the operating entities within the PremiStar portfolio.
Scale indicators6 records
Recent moves6 records
Expansion highlights5 records
SI Mechanical competitors and assessment
Company assessmentBroad incumbents
- ACCO Engineered Systems: National mechanical contractor with deep presence in Texas offering HVAC, plumbing, building automation, and fabrication. Comparable in design-build-maintain model but with broader geographic footprint.
- Southland Industries: Large national mechanical contractor with design-build-maintain capabilities and a Texas presence. Overlaps in HVAC, plumbing, and fabrication but operates at significantly broader scale.
- APi Group: Public parent of building safety, security, and HVAC specialty contractors. Competes through subsidiaries offering commercial mechanical services with similar end customers.
- EMCOR Group: Public Fortune 500 facilities services and mechanical contractor parent. Competes with SI Mechanical through subsidiaries in commercial HVAC, plumbing, and service across Texas and nationally.
- IES Holdings: Public electrical and mechanical services contractor with commercial HVAC and plumbing capabilities. Competes for similar commercial and institutional mechanical work, particularly in Texas.
Direct peers
- TDIndustries: Dallas-based employee-owned mechanical contractor providing HVAC, plumbing, and building automation services across Texas. Closest direct peer in scale, geography, and commercial mechanical contracting focus.
- Limbach Holdings: Public mechanical services firm specializing in HVAC, plumbing, and building controls with design-build-maintain delivery. Highly comparable business model and customer base.
- Brandt Companies: Texas-based mechanical contractor serving commercial, healthcare, and industrial markets. Direct peer in scope of HVAC and plumbing services, fabrication capability, and regional footprint.
- Way Engineering: Houston-based commercial mechanical contractor offering HVAC, plumbing, and process piping services. Directly comparable in core services, project-based delivery, and Texas-market focus.
Emerging players
- H+M Industrial: Texas EPC and industrial mechanical contractor with process piping and fabrication capabilities. Comparable on fabrication/installation services but with greater industrial/process emphasis.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat6 records
Key risks6 records
Key highlights7 records
Customer concentration
SI Mechanical social profiles
Digital presenceSI Mechanical compliance and trust
Trust signalCompliance2 records
SI Mechanical financial estimates
Financial estimateRevenue estimate
Valuation estimate
SI Mechanical leadership team
Management profileNumber of profiles
SI Mechanical funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
SI Mechanical 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 SI Mechanical
What does SI Mechanical do?
SI Mechanical is a commercial mechanical contractor providing HVAC and plumbing construction, service, maintenance, and in-house custom sheetmetal and piping fabrication. The company serves commercial, healthcare, education, technology, industrial, and municipal clients across Central Texas using hard bid, design-build, and design-assist project delivery methods, complemented by 24/7 emergency service and preconstruction planning.
Is SI Mechanical a public or private company?
SI Mechanical is a private company. It is classified as corporate owned and is currently operating.
When was SI Mechanical founded?
SI Mechanical was founded in 2012. It employs 101 to 250 people.
Where is SI Mechanical based?
SI Mechanical is headquartered in Manchaca, United States, in the North America region.
How does SI Mechanical make money?
Three revenue lines are on record. Construction Projects are the primary driver. The others are service and Maintenance Contracts and fabrication Sales.
Who are SI Mechanical's main competitors?
Broad incumbents on record are ACCO Engineered Systems, Southland Industries, APi Group, EMCOR Group and IES Holdings. Direct peers are TDIndustries, Limbach Holdings, Brandt Companies and Way Engineering. H+M Industrial is listed as an emerging player.
Does SI Mechanical have an API?
No public API is recorded for SI Mechanical.
What industry is SI Mechanical in?
SI Mechanical's product category is Commercial Mechanical Contracting (HVAC and Plumbing). Its primary akta.pro industry code is IMAFALAB, HVAC & Refrigeration Contracting, with a secondary code of IMAIABAA, HVAC Installation, Service & Repair. Its NAICS code is 238220.