MSS
MSS is a Salt Lake City-based full-service mechanical contractor providing HVAC, plumbing, boilers, controls, process piping fabrication, and mechanical construction for commercial and industrial clients across Utah. Founded in 1984 and now part of the PremiStar platform backed by Partners Group.
- Company typePrivate
- Founded1984
- HeadquartersSalt Lake City, United States
- Headcount101–250
- GTM typeB2B
- OfferingServices
What MSS does
MSS (Mechanical Service & Systems, Inc.) is a full-service mechanical contracting firm founded in 1984 and headquartered in Salt Lake City, Utah. The company delivers HVAC service and installation, plumbing, boiler service and fabrication, mechanical construction (pre-construction, design-build, plan & spec, retrofit & remodel), process piping fabrication, and open-protocol building automation integrated through Distech Controls. Its technical footprint is anchored by a state-of-the-art in-house fabrication shop capable of prefabricating process piping up to 40 inches in diameter, ASME-certified code welding (R, S, PP stamps), and a union-trained technical workforce, which collectively support a single-source delivery model for commercial and industrial facility clients.
MSS serves a diversified set of verticals across Utah and the broader Intermountain West, including commercial facilities, data centers and mission-critical environments, mining and oil & gas, aerospace, healthcare and life sciences, foodservice and food manufacturing, and education. Notable customers include Rio Tinto (named Global Contractor of the Year 2021 from 37,000 contract partners across 35 countries), University of Utah, Nature's Bakery, Frulact, Gold's Gym, and HOYT Archery. The company's safety program is led by a full-time safety director and has produced TRIR of 1.2, EMR of 0.63, and over 1,200,000 safe hours without a lost-time incident.
Revenue is generated through three streams: recurring mechanical service (HVAC, plumbing, preventative maintenance, 24/7 emergency response), project-based mechanical construction, and boiler rental, sales, and distribution under manufacturer relationships (Hurst, Unilux, Industrial Combustion, Siemens Combustion Controls, Autoflame, Limpsfield, Watson McDaniel). Pricing is quote-based across multi-year maintenance contracts and project bids, with no public price list. MSS sells exclusively direct to end customers through enterprise field sales and 24/7 emergency dispatch. In June 2026, MSS was acquired by PremiStar, a commercial and industrial HVAC, plumbing, and building automation platform backed by Partners Group, with D.A. Davidson & Co. advising the seller.
MSS firmographics
Firmographics- Name
- MSS
- Legal name
- Mechanical Service and Systems, Inc.
- Website
- https://mss84.com/
- Company type
- Private
- Founded year
- 1984
- Operating status
- Acquired
- Headcount range
- 101–250 employees
- Short description
- MSS is a Salt Lake City-based full-service mechanical contractor providing HVAC, plumbing, boilers, controls, process piping fabrication, and mechanical construction for commercial and industrial clients across Utah. Founded in 1984 and now part of the PremiStar platform backed by Partners Group.
- Ownership category
- akta.pro rank
MSS industry classification
Industry- Product category
- Mechanical Contracting Services
- NAICS
- Plumbing, Heating, and Air-Conditioning Contractors (238220), Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance (811310), Building Equipment Contractors (2382)
- SIC
- Construction - Special Trade Contractors (1700)
- akta.pro primary industry
- HVAC & Refrigeration Contracting (IMAFALAB)
- akta.pro secondary industries
- HVAC Installation, Service & Repair (IMAIABAA), Plumbing & Pipefitting Contracting (IMAFALAC), Water Heater/Boiler Flue, Venting & Chimney Liner Service (HSAOACAF), Hard Services (MEP/HVAC, Electrical, Plumbing) (BPABAAAA), Welding, Fabrication & Field Machining Services (On-site) (IMAIACAD)
Keywords
Where MSS is headquartered
LocationHeadquarters
- HQ city
- Salt Lake City
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
MSS business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Supply Chain, Infrastructure, Marketing or Sales, Others
Revenue model
- Mechanical Service: Ongoing service revenue from HVAC, plumbing, and boiler maintenance, repairs, and emergency services. Includes preventative maintenance contracts and 24/7 emergency response services billed per service call or contract.
- Mechanical Construction: Project-based revenue from pre-construction, design-build, plan & spec, retrofit & remodel, and process piping fabrication. Revenue generated through construction project contracts for new builds and system upgrades.
- Boiler Rental and Sales: Commercial boiler rentals with rapid delivery and deployment, along with boiler and burner equipment sales. Also includes parts sales and distribution for boiler components.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Custom quotation for all services |
Go-to-market motion1 record
Distribution channels1 record
Marketing channels4 records
MSS product offering
Product offeringCore offering
MSS provides full-service mechanical contracting for commercial and industrial facilities in Utah, covering HVAC service and repair, commercial plumbing, boiler maintenance/retube/rental/sales, process piping fabrication, design-build and plan-and-spec mechanical construction, and open-protocol building automation. Its in-house fabrication shop, ASME-certified code welding (R and S stamps), union-trained technicians, and 24/7 emergency dispatch enable delivery as a single-source mechanical partner across new builds, retrofits, and ongoing maintenance contracts.
Product overview
MSS (Mechanical Service & Systems) is a full-service mechanical contracting company offering a unified portfolio of services for commercial and industrial facilities in Utah. The core offering consists of four main service areas: Mechanical Service (HVAC, plumbing, preventative maintenance, emergency, and industrial service), Mechanical Construction (pre-construction, design-build, plan & spec, retrofit & remodel, and piping/fabrication), Boiler Service (maintenance, rental, sales, and retube), and Building Controls (open-protocol building automation). These services are delivered as an integrated single-source solution, with in-house fabrication and union-trained technicians enabling MSS to handle projects from design through construction to ongoing maintenance without coordinating multiple contractors. The company primarily serves commercial, data center, mining/oil/gas, aerospace, foodservice, healthcare/life sciences, and education sectors.
Differentiator
Problem solved
Functional benefit
Products and services
- Mechanical Service Full-service mechanical contracting covering HVAC service, plumbing service, preventative maintenance, 24/7 emergency response, and industrial service for commercial and industrial facilities in Utah.
- Mechanical Construction Mechanical construction services including pre-construction, design-build, plan and spec, retrofit and remodel, and piping and fabrication delivered under one roof for commercial and industrial customers.
- Boiler Service Full-service boiler expertise including preventative maintenance, parts sales, rental and sales, boiler repair, and boiler retube services for commercial and industrial facilities.
- Building Controls Open-protocol building automation solutions integrating HVAC, lighting, metering, and third-party systems into a single platform through Distech Controls system integration, with MSS serving as both integrator and parts distributor.
- Boiler Rental and Sales Commercial and industrial boiler rental solutions and sales, including a large rental fleet (boilers, deaerators, feed systems) with units up to 800 HP, plus MSS representation for Hurst, Unilux, Industrial Combustion, Siemens Combustion, Autoflame, Limpsfield, and Watson McDaniel.
- Piping and Fabrication Process piping solutions with in-house detailing, fabrication, installation, and ASME code welding for pipes up to 40 inches in diameter, backed by R and S stamps.
Quantifiable outcome
- 1.2 Total Recordable Incident Rate (TRIR) - well below industry averages
- +3 more outcomes
Companies that use MSS
Customer profileNamed customers6 records
Segments8 records
Ideal customer profiles6 records
MSS technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
MSS partnerships and signals
Strategic signalScale indicators8 records
Recent moves6 records
Expansion highlights6 records
MSS competitors and assessment
Company assessmentBroad incumbents
- EMCOR Group: EMCOR Group is one of the largest mechanical and electrical construction, energy, and facilities services providers in the U.S. MSS shares EMCOR's core model of HVAC, plumbing, building automation, and industrial mechanical services, but EMCOR operates nationally with vastly greater scale and a public-company balance sheet.
- APi Group: APi Group is a global life safety, specialty, and industrial services platform with significant mechanical services exposure. Its safety-services focus and PE-style acquisition strategy make it a comparable platform peer for MSS's positioning within the PremiStar/Partners Group roll-up.
- PremiStar: PremiStar is the PE-backed platform (owned by Partners Group) that acquired MSS in June 2026, providing commercial/industrial HVAC, plumbing, and building automation services across multiple U.S. regions. As MSS's parent and consolidator, PremiStar is the most directly relevant platform peer and competitive benchmark.
- IES Holdings: IES Holdings provides electrical and mechanical infrastructure services across commercial, industrial, and data center markets. MSS competes in overlapping HVAC, plumbing, and controls work, with IES operating nationally and notably exposed to data center and mission-critical verticals.
Regional players
- U.S. Engineering Company Holdings: U.S. Engineering is a large employee-owned mechanical contractor delivering HVAC, plumbing, and building automation across the central U.S. MSS aligns with U.S. Engineering's full-service commercial and industrial mechanical model, including mission-critical and healthcare vertical expertise.
- TDIndustries: TDIndustries is an employee-owned mechanical contractor serving Texas and the Southwest with HVAC, plumbing, and building automation services. MSS shares TDIndustries' full-service mechanical model, mission-critical industrial exposure, and long-tenured craft workforce culture.
- ACCO Engineered Systems: ACCO Engineered Systems is a large Western U.S. mechanical contractor providing HVAC, plumbing, and building automation to commercial and industrial markets. MSS is a comparable full-service mechanical contractor with similar end-market exposure, with ACCO serving as a relevant West Coast/Mountain benchmark.
- Murphy Company: Murphy Company is a Midwest mechanical contractor providing HVAC, plumbing, process piping, and fabrication for commercial and industrial customers. MSS is directly comparable in its in-house fabrication capability, union-trained workforce, and industrial process piping focus.
Direct peers
- Limbach Holdings: Limbach Holdings is a publicly traded mechanical contractor specializing in HVAC, plumbing, and building controls for commercial and industrial customers. MSS aligns closely with Limbach's full-service mechanical model, union-trained workforce, and emphasis on building automation and energy-efficiency retrofits.
- Comfort Systems USA: Comfort Systems USA is a national mechanical contracting platform delivering HVAC, plumbing, and building automation services to commercial and industrial customers. MSS mirrors the same single-source mechanical services playbook at a regional scale, with comparable recurring-service and project-based revenue mix.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat6 records
Key risks5 records
Key highlights7 records
Customer concentration
MSS social profiles
Digital presenceMSS compliance and trust
Trust signalCompliance20 records
MSS financial estimates
Financial estimateRevenue estimate
Valuation estimate
MSS leadership team
Management profileNumber of profiles
MSS funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
MSS 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 MSS
What does MSS do?
MSS provides full-service mechanical contracting for commercial and industrial facilities in Utah, covering HVAC service and repair, commercial plumbing, boiler maintenance/retube/rental/sales, process piping fabrication, design-build and plan-and-spec mechanical construction, and open-protocol building automation. Its in-house fabrication shop, ASME-certified code welding (R and S stamps), union-trained technicians, and 24/7 emergency dispatch enable delivery as a single-source mechanical partner across new builds, retrofits, and ongoing maintenance contracts.
Is MSS a public or private company?
MSS is a private company. It is classified as private equity controlled and is currently acquired.
When was MSS founded?
MSS was founded in 1984. It employs 101 to 250 people.
Where is MSS based?
MSS is headquartered in Salt Lake City, United States, in the North America region.
How does MSS make money?
Three revenue lines are on record. Mechanical Service is the primary driver. The others are mechanical Construction and boiler Rental and Sales.
Who are MSS's main competitors?
Broad incumbents on record are EMCOR Group, APi Group, PremiStar and IES Holdings. Regional players are U.S. Engineering Company Holdings, TDIndustries, ACCO Engineered Systems and Murphy Company. Direct peers are Limbach Holdings and Comfort Systems USA.
Does MSS have an API?
No public API is recorded for MSS.
What industry is MSS in?
MSS's product category is Mechanical Contracting Services. 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 and its SIC code is 1700.