What Midtherm Engineering does

Midtherm Engineering Ltd is a privately held UK specialist engineering contractor, founded in 1983 and headquartered in Netherton, Dudley (West Midlands). The firm designs, supplies, and installs flues, masts, chimneys, canopy systems, and natural ventilation systems for commercial and industrial buildings, with documented delivery on enterprise projects including Great Ormond Street Hospital's Zayed Centre for Research into Rare Disease in Children and the University of Warwick campus.

The core product portfolio comprises six categories: Flues, Masts & Chimneys (with sub-products Flue Dilution and Combivent), Furanflex composite chimney liners, CCTV Survey & Pressure Testing services, commercial Canopy Systems, Natural Ventilation Systems, and an Intelligent Controls Systems add-on module. The underlying technology stack centres on custom metalwork fabrication combined with the licensed Furanflex composite liner system, supported by in-house inspection capabilities (CCTV and pressure testing) that allow the firm to bid across new-build, refurbishment, and compliance-testing scopes.

Revenue is generated through three streams: project-based installation services (design, supply, install) for commercial clients, hardware supply of flue, chimney, canopy, and ventilation components, and recurring survey/testing work. The go-to-market is direct B2B sales (phone and email) into the commercial construction, healthcare, and education verticals, with CHAS, SafeContractor, and Construction Line accreditations supporting access to UK pre-qualified procurement. The operating geography is the West Midlands region, and the firm is small (11–50 employees), privately held, and independent with no disclosed parent or institutional investors.

Name

Midtherm Engineering

Legal name

Midtherm Engineering Ltd

Website

https://mideng.net

Company type

Private

Founded year

1983

Operating status

Operating

Headcount range

11–50 employees

Ownership category

akta.pro rank

Product category

Commercial Flue and Ventilation Engineering Services

NAICS

Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use (334512)

SIC

Services-Testing Laboratories (8734)

akta.pro primary industry

Water Heater/Boiler Flue, Venting & Chimney Liner Service (HSAOACAF)

akta.pro secondary industries

Chimney Sweeping & Flue Cleaning (HSAEANAA), Dampers, Louvers & Ventilation Controls (IMADANAD)

Keywords

• Flue installation services
• Chimney liner systems
• Commercial ventilation systems
• Canopy design installation
• Pressure testing services

Headquarters

HQ city

Netherton

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Supply Chain, Marketing or Sales, Infrastructure

Revenue model

1. Installation Services: Design, supply, and installation of flue systems, chimneys, and ventilation equipment for commercial projects
2. Product Supply: Supply of flues, masts, chimneys, canopy systems, and related components
3. Survey and Testing Services: CCTV survey and pressure testing services for existing installations

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Midtherm Engineering designs, supplies, and installs commercial and industrial flue systems, chimneys, masts, canopy systems, and natural ventilation solutions. The company also delivers CCTV survey and pressure testing services for existing flue and chimney installations. It provides end-to-end project delivery — from design and engineering through to supply, installation, and post-installation inspection — for construction, healthcare, and education sector clients.

Product overview

Midtherm Engineering is a specialist engineering firm offering a portfolio of flue, ventilation, and chimney systems for commercial and industrial applications. The core product range includes Flues, Masts & Chimneys (comprising flue dilution and Combivent sub-products), Furanflex Chimney Liners, CCTV Survey & Pressure Testing services, Canopy Systems, and Natural Ventilation Systems. These products are complemented by Intelligent Controls Systems as an add-on module for smart system management. The company provides installation, design, and associated services for these products, serving sectors including commercial buildings, healthcare facilities (such as Great Ormond Street Hospital), and educational institutions.

Differentiator

Problem solved

Functional benefit

Brands

• Furanflex: Composite chimney liner product

Products and services

• Flues, Masts & Chimneys Complete range of flue systems, masts, and chimneys for commercial and industrial heating applications, comprising custom-designed and installed flue systems for varied project requirements.
• Furanflex Chimney Liners Composite chimney liner systems using Furanflex technology for flexible, durable flue lining solutions in commercial and industrial chimney renovation and installation projects.
• CCTV Survey & Pressure Testing Inspection and testing services using CCTV technology to survey flues and pressure test systems for compliance verification and integrity assessment of existing installations.
• Canopy Systems Commercial canopy systems for ventilation and extraction applications in commercial kitchen and industrial settings, with design and installation services.
• Natural Ventilation Systems Natural ventilation solutions designed to provide airflow and climate control in commercial buildings without mechanical assistance.

Named customers2 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration1 record

Feature5 records

Partnerships

Three partnerships are on record, tiered minor.

• CHAS (Contractors Health and Safety Assessment Scheme)minorOthersHealth and safety accreditation scheme. CHAS membership demonstrates the company's commitment to health and safety standards in construction and installation operations.
• Safe ContractorminorOthersHealth and safety accreditation programme. Safe Contractor accreditation demonstrates compliance with health and safety requirements for contractors.
• Construction LineminorOthersPre-qualification system for construction contractors. Construction Line membership facilitates engagement with public and private sector buyers.

Recent moves3 records

Expansion highlights4 records

Broad incumbents

• Selkirk Manufacturing: Established North American chimney and venting products manufacturer. Comparable to Midtherm as a provider of commercial flue and chimney venting systems, including liner and specialty venting products used in heating installations.
• Schiedel: One of Europe's largest chimney and flue system manufacturers and installers. Comparable to Midtherm because both design and deliver commercial/industrial flue and chimney solutions, though Schiedel operates at a significantly larger, multi-country scale and also manufactures the underlying product.
• CHAS-accredited M&E contractors (e.g., Balfour Beatty, NG Bailey): Large UK mechanical & electrical contractors who deliver HVAC and ventilation works as part of broader building services contracts. They compete with Midtherm on large institutional tenders (hospitals, universities) where flue/chimney is bundled into wider M&E scope.
• Rite-Vent (Broan-NuTone): Major venting products brand under Broan-NuTone, offering chimney, flue, and ventilation components. Comparable to Midtherm on the commercial venting/flue product side, though it operates as a global manufacturer rather than a regional installer.

Direct peers

• Mi-Flues: UK-based flue, chimney, and ventilation product supplier and installer. Closely comparable to Midtherm as a similarly sized UK specialist focused on supplying and installing commercial flue and chimney systems.
• Brewer Metalcraft: UK manufacturer and supplier of chimney cowls, flue components, and related metalwork. Comparable to Midtherm in serving the commercial flue/chimney supply and installation market in the UK.
• Anco Chimney Supplies: UK supplier and installer of chimney and flue products. Comparable to Midtherm as a UK-based trade supplier focused on chimney liner, flue, and related installation components for commercial and industrial projects.
• Euroform: UK precast concrete chimney and structural solutions provider. Comparable to Midtherm as a UK specialist delivering engineered chimney, flue, and related structural products into commercial and industrial construction.
• Isokern (Orkli): UK supplier of modular chimney and flue systems built from pumice and related materials. Comparable to Midtherm as a UK-based specialist providing engineered chimney and flue systems to commercial and residential customers.
• BIS Flues: UK flue and chimney installation and refurbishment specialist serving commercial and domestic customers. Directly comparable to Midtherm's flue, chimney liner, and refurbishment installation business.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/MidthermEng
• LinkedInlinkedin.com/company/midtherm-engineering-limited
• Facebookfacebook.com/profile.php

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

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 Midtherm Engineering