What Maintenance Partners does

Maintenance Partners (HMP), commercially known as 'Maintenance Partners by Howden,' is a Belgian-headquartered aftermarket service specialist for rotating and turbomachinery equipment, founded in 2001 through a management buyout of ABB's Service Group and operating today as a wholly-owned business unit of Howden within Chart Industries (NYSE: GTLS). The company provides OEM-agnostic workshop and field services covering centrifugal, axial, screw, lobe and integrally geared compressors; single- and multi-stage steam turbines (impulse, reaction, condensing, non-condensing); axial and radial turboexpanders; generators; AC/DC motors; blowers; fans; gearboxes; pumps; and industrial shredders. Service lines span complete overhauls, repairs, reconditioning, upgrades, revamps, relocations, balancing, re-rates, de-rates, and modifications, plus spare parts supply including reverse-engineered obsolete items.

The technology stack rests on three pillars: proprietary product IP (the GEMEX hydraulically adjustable and mechanically lockable belt tensioning system with over 10,000 installations worldwide since 1998), engineering analysis capability (1D mean-line, 2D through-flow and 3D Computational Fluid Dynamics; Finite Element Structural and Modal Analysis; blue-light 3D scanning combined with PMI for chemical composition), and workshop capability including a Schenck high-speed balancing machine rated to 30,000 RPM compliant with API684, API617, ISO11342, and rotor repair per API 687. Rotor services and component repairs are delivered both at HMP workshop facilities and via on-site field teams.

HMP generates revenue across four streams: (1) workshop services, (2) field services including routine inspection, service plans and emergency response, (3) spare parts — including OEM, reconditioned, and reverse-engineered items — and (4) engineering services covering upgrades, re-rates, de-rates, revamps and optimization. Pricing is custom quote-based with multi-year contracts disclosed; customer acquisition is direct via phone/email inquiry and through the Howden/Chart Industries corporate distribution network. Target verticals are process industries — oil refineries, fertilizer plants, (petro)chemical plants — plus general industrial operators and power generation. Geographic reach spans Belgium (HQ, Zwijndrecht), France and the UAE as contact offices, with service delivery extending across Europe, the Middle East, Africa, Asia, and South America. The 2022 acquisition of Turbine Europe expanded radial turboexpander capability, and Chart Industries itself is subject to acquisition by Baker Hughes (announced July 2025).

Name

Maintenance Partners

Legal name

Maintenance Partners (HMP)

Website

https://maintenancepartners.com

Company type

Private

Founded year

2001

Operating status

Operating

Headcount range

251–500 employees

Short description

Maintenance Partners (HMP), a Belgian aftermarket service specialist and wholly-owned unit of Howden within Chart Industries, provides OEM-agnostic repair, overhaul, upgrade, balancing, and engineering services for rotating and turbomachinery equipment to oil refineries, fertilizer plants, petrochemical plants, power generators, and industrial operators across Europe, the Middle East, Africa, Asia, and South America.

Ownership category

akta.pro rank

Product category

Industrial Rotating Equipment Aftermarket Services

NAICS

Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance (811310)

SIC

Oil & Gas Field Services, Nec (1389), Engines & Turbines (3510), General Industrial Machinery & Equipment (3560)

akta.pro primary industry

Rotating Equipment Maintenance (Turbines, Generators, Motors, Pumps, Compressors) (EUAEAGAI)

akta.pro secondary industry

Aftermarket Parts, Service & Remanufacturing (Pumps/Compressors) (IMAHANAJ)

Keywords

• Rotating equipment services
• Turbomachinery aftermarket
• Industrial maintenance services
• Compressor repair services
• Steam turbine overhaul

Headquarters

HQ city

Zwijndrecht

HQ country

Belgium

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Supply Chain, Technology or R&D, Infrastructure

Revenue model

1. Workshop Services: In-house services including repairs, re-rates, upgrades, parts, maintenance, re-engineering, balancing and testing performed at HMP workshop facilities.
2. Field Services: On-site services including routine inspection and maintenance, service plans, and emergency response delivered at customer locations.
3. Spare Parts: Supply of parts including seals, rotors, complete units, and reverse-engineered obsolete items for rotating equipment.
4. Engineering Services: Upgrades, re-rates, de-rates, revamps, and optimization of rotating equipment.

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels4 records

Core offering

Maintenance Partners by Howden (HMP) provides aftermarket maintenance, repair, overhaul, upgrade, re-rating, balancing, testing, and engineering services for rotating and turbomachinery equipment including compressors, steam turbines, turboexpanders, generators, motors, pumps, blowers, fans, gearboxes, and shredders. Services are delivered OEM-agnostically across all major brands via in-house workshop facilities and on-site field service teams for process industries such as oil refineries, fertilizer plants, and petrochemical plants.

Product overview

Maintenance Partners by Howden (HMP) is an aftermarket service partner for rotating and turbomachinery equipment, offering comprehensive workshop services (repairs, re-rates, upgrades, parts, maintenance, re-engineering, balancing and testing) and field services (routine inspection, maintenance, service plans, emergency response). The portfolio spans compressor services (centrifugal, axial, screw, radial), steam turbine services (single and multi-stage), turboexpander services (axial and radial), generator services, motor services, blower/fan services, gearbox services, pump services, shredder services, and the GEMEX Belt Tensioning System product. Engineering capabilities include Computational Fluid Dynamics (CFD) analysis, Finite Element Analysis (FEA), reverse engineering using 3D blue light scanning, and optimization/upgrades/rerates services. The company services all OEM brands regardless of make, positioning itself as a multi-brand aftermarket specialist.

Differentiator

Problem solved

Functional benefit

Brands

• GEMEX: Hydraulically adjustable and mechanically lockable motor platform for belt tensioning systems, allowing safe and efficient belt replacement and tension adjustment

Products and services

• Centrifugal Compressor Services Complete overhauls, repairs, reconditioning, upgrades, revamps and relocations of centrifugal compressors including axial, radial, screw, bull gear type, and integrally geared compressors for industrial operators.
• Steam Turbine Services Complete overhauls, repairs, reconditioning, upgrades and modifications of single-stage and multi-stage steam turbines (impulse, reaction, condensing, and non-condensing) used at oil refineries, fertilizer plants and (petro)chemical plants.
• Axial Turboexpander Services Overhauling and repairing axial turboexpanders including multi-stage and single-stage expander wheels, with services ranging from routine inspections to complete overhauls.
• Radial Turboexpander Services Parts and servicing for all brands and models of radial turboexpanders including expander/compressors with oil bearings and Active Magnetic Bearings (AMB), expander/generator and expander/dyno configurations.
• Generator Repair Services Repair and servicing of generators including salient pole and turbo rotors, emergency power units, from small kVA to large MVA power, high and low voltage, air cooled to hydrogen cooled.
• AC/DC Motor Services Repair of electric motors including AC and DC, low, medium and high voltage, ex motors, submerged, traction, stirrer/LDPE Autoclave reactor motors, and high temperature/frequency motors.
• Blower and Fan Services Service, maintenance and repair of vacuum blowers, lobes, screws, centrifugal and high vacuum boosters, centrifugal fans, axial fans, belt-driven fans including cleaning, machining, coatings and alignment.
• Gearbox Services Standard inspections, routine maintenance, repairs and complete overhauls of gearboxes including planetary and bull gear types with axial clearances measurement and gear tooth inspections.
• Pump Services Service, maintenance, overhaul and repair of vacuum, centrifugal, multi-stage, boiler feed, deep well, booster, canned motor, barrel and rotary vane pumps.
• Shredder Services Overhaul and repair of industrial shredders, cutters and breakers including shear shredders, reducers, hammermills with Hardox wear parts supply.
• Rotor Repair Services Inspection, balancing, repair, refurbishment and testing of turbomachinery rotors in accordance with API 687 standards for axial compressors, radial compressors, steam turbines and expanders.
• GEMEX Belt Tensioning System Hydraulically adjustable and mechanically lockable motor platform for safely checking and adjusting belt tension, enabling belt replacement in approximately 5 minutes without realignment and providing 5-10% energy savings.
• Computational Fluid Dynamics (CFD) Analysis 1D mean-line, 2D through flow and 3D CFD analysis to evaluate and optimize the performance of rotating equipment.
• Finite Element Analysis (FEA) FEA Structural and Modal Analysis to evaluate mechanical integrity of components for optimized performance and life cycle, also used in failure analysis.
• Reverse Engineering Services Blue light scanning using non-contact 3D technology for capturing component geometry, with PMI used to determine chemical composition including carbon content.
• Optimization, Upgrades and Rerates Engineered redesign, optimization and improved performance of major components across all types of rotating machinery.
• Spare Parts Supply Supply of OEM, reconditioned, and reverse-engineered parts including seals, rotors, complete units, and obsolete items for rotating equipment.

Quantifiable outcome

• 5 to 10% energy savings with GEMEX belt tensioning system through better alignment
• +3 more outcomes

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

One partnership is on record.

• HowdencoreOthers · 1 January 2021HMP was acquired by Howden in 2021. Howden is a leading provider of mission-critical air and gas handling products and services. This acquisition integrated HMP into the Howden/Chart Industries family, providing HMP with enhanced technology and digital services capabilities.

Scale indicators4 records

Recent moves5 records

Expansion highlights5 records

Broad incumbents

• Solar Turbines (Caterpillar): Large gas turbine OEM with a long-running Customer Services network performing overhaul, repair and parts work on industrial rotating equipment serving similar process-industry customers.
• Wärtsilä Services: Engine and rotating equipment supplier with a global service network performing condition-based maintenance, overhauls and upgrades for process and power customers, comparable in aftermarket scope.
• MAN Energy Solutions (MAN Turbo) Service: Major OEM of large turbomachinery that also runs a substantial service network for turbine, compressor and engine overhauls; competes with HMP on multi-brand turbine service despite its OEM roots.
• Siemens Energy Service: OEM service arm performing field and shop overhauls on steam and gas turbines, compressors and generators in oil & gas, power and process-industry markets, directly overlapping with HMP's core scope.
• Mitsubishi Heavy Industries (Power / Turbomachinery Service): OEM of large steam turbines, compressors and blowers with an extensive aftermarket services business covering overhauls, upgrades and spare parts in petrochemical and power applications.
• Atlas Copco Power Technique / Industrial Service: Industrial compressor and rotating equipment OEM with an aftermarket service business spanning installation, maintenance and overhaul across process and general industrial customers.
• Ingersoll Rand (Precision Fluidics / Compression Services): Industrial compressor and pump provider with a service-led aftermarket franchise serving process and manufacturing customers similar to HMP's industrial operators segment.

Direct peers

• Sulzer: Independent rotating equipment service specialist with a broad pump, compressor, turbine and motor aftermarket portfolio and global workshop network, directly comparable to HMP's OEM-agnostic positioning.
• Flowserve Corporation: Global pump and rotating equipment manufacturer and aftermarket service provider, serving oil & gas, chemical and power customers with repair, overhaul and spare-parts offerings comparable to HMP's pump services stream.
• Elliott Group: Designs and services turbomachinery (compressors and turbines) and runs independent aftermarket service operations for rotating equipment, overlapping with HMP's turbomachinery overhaul and re-rating work.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/Chartind
• YouTubeyoutube.com/user/ChartIndustries
• Facebookfacebook.com/maintenance-partners-253328428039659
• LinkedInlinkedin.com/company/maintenance-partners
• Instagraminstagram.com/chart_industries

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Maintenance Partners