The Installation Assurance Authority (The IAA)

What The Installation Assurance Authority (The IAA) does

The Installation Assurance Authority (The IAA) is a UK not-for-profit technical authority and certification body serving the retrofit, energy efficiency, and microgeneration installation sector. Founded in 2020 and rebranded from The Insulation Assurance Authority in December 2022, the company operates from Leighton Buzzard, Bedfordshire, as a private limited company under The IAA Group holding structure, with 39 employees and a governance model that reinvests surpluses through The Installation Assurance Authority Federation (The IAAF).

The IAA's core offering combines PAS 2030 and MCS (Microgeneration Certification Scheme) certification, consumer guarantees (including Solid Wall Insulation guarantees up to £30,000 for guarantees issued after September 2025), TrustMark registration, and a Competent Persons Scheme for Building Regulations compliance. Its underlying technology is an end-to-end Quality Management System (E2E) developed in collaboration with Renbee, exclusive to IAA Guarantee users, which manages projects from initial survey through DNO applications, compliance recording, invoicing, and homeowner pack creation. The company also operates the Installer Suitability Assessment (ISA) service, the IAA CS Retrofit Coordinator service, and training through The National Energy Efficiency Centre (The NEEC).

Revenue is generated through subscription and certification fees (MCS Redeveloped Installer Scheme starts at £805 ex VAT annually, including 12 months certification plus the MCS license fee), guarantee products priced annually or pay-as-you-go for PAS 2030, and professional services revenue from training courses and remediation assessments. Go-to-market combines enterprise field sales with a 12-day onboarding process, channel partnerships with TrustMark, Which? Trusted Traders, and Checkatrade, and event-driven engagement through the IAAF Conference and UK-wide roadshows. The customer base is distributed across enterprise, mid-market, and SMB retrofit installers, system designers and suppliers, government-funded scheme installers (ECO4, GBIS, LAD), and self-funding homeowners via the Able To Pay scheme.

Name

The Installation Assurance Authority (The IAA)

Legal name

The Installation Assurance Authority

Website

https://theiaa.co.uk

Company type

Private

Founded year

2020

Operating status

Operating

Headcount range

11–50 employees

Short description

The Installation Assurance Authority (The IAA) is a UKAS-accredited, not-for-profit technical authority providing PAS 2030 and MCS certification, consumer guarantees, TrustMark registration, and an end-to-end Quality Management System for retrofit, energy efficiency, and microgeneration installers across the UK, Australia, and New Zealand.

Ownership category

akta.pro rank

Headquarters

HQ city

Leighton Buzzard

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. MCS Certification and Membership Fees: Certification fees for MCS (Microgeneration Certification Scheme) and PAS 2030 membership. MCS Redeveloped Installer Scheme starts from £805 (ex VAT) including 12 months certification for 1 technology at £750 plus £55 MCS license fee.
2. Guarantee Products: Consumer guarantees for insulation, heating, and microgeneration measures. Solid Wall Insulation guarantees increased to £25,000 for ECO4/GBIS schemes and £30,000 for guarantees issued after 01st September 2025.
3. Training Services: Fully funded and paid training courses through The National Energy Efficiency Centre (The NEEC) covering ventilation, air tightness testing, Retrofit Coordination, and NVQ qualifications.

Pricing tiers

Go-to-market motion3 records

Distribution channels6 records

Marketing channels8 records

Core offering

The Installation Assurance Authority (The IAA) is a UK-based not-for-profit technical authority that provides certification, consumer guarantees, and quality assurance services for insulation, heating, and renewable energy installers. It operates as a one-stop certification and assurance body covering PAS 2030, MCS, TrustMark, Competent Persons Schemes, and related retrofit and energy efficiency programmes, with surpluses reinvested into the industry through The IAA Federation (IAAF).

Product overview

The Installation Assurance Authority (The IAA) operates as a unified platform combining certification, quality assurance, consumer protection, and training services for the energy efficiency and retrofit industry. The core offering centers on the E2E Quality Management System—a digital project management platform—alongside PAS 2030 and MCS certification programmes. These are supported by IAA Guarantees providing consumer protection, the TrustMark registration scheme, Competent Persons Scheme (CPS) for building regulation compliance, and Retrofit Coordinator Services. The IAA also provides supplementary services including air tightness testing, training through The NEEC, the Procurement Framework for member remediation work, and the Able To Pay (ATP) Scheme for self-funding consumers. The MCS Redeveloped Installer Scheme, launched in 2026, represents their latest certification offering with enhanced consumer protection.

Differentiator

Problem solved

Functional benefit

Brands

• The IAA CS: Commercial Services division providing training, ventilation and air tightness testing services, and Retrofit Coordinator services.
• The National Energy Efficiency Centre (The NEEC)
• The Installation Assurance Authority Federation (The IAAF)

Products and services

• PAS 2030 Certification

Quantifiable outcome

• 12% SWI failure rate vs 98% industry average (NAO report)
• +3 more outcomes

Named customers9 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Twelve partnerships are on record, tiered major, core and minor.

• The Insulation Installation Assurance Authority (The IIAA) - AustraliamajorOEM/ Whitelabel/ Licensing Partner · 6 November 2024The IAA signed an exclusive licence agreement with The IIAA, bringing The IAA's proven quality assurance framework, developed over 27 years, to Australia, and soon New Zealand.
• TrustMarkcoreStrategic or Co-development PartnerThe IAA operates as a TrustMark Scheme Provider Certification Body. IAA members have access to TrustMark registration with coverage for all Energy Efficient Measures. TrustMark Registered businesses can reduce Inherent Technical Risk (ITR) for covered measures by one. IAA is also the first Scheme Provider to offer TrustMark Licence Plus.
• MCS (Microgeneration Certification Scheme)coreStrategic or Co-development PartnerThe IAA is the first UKAS-accredited certification body for the MCS Redeveloped Installer Scheme. Provides MCS certification to installers for technologies including ASHP, GSHP, Solar PV, Solar Thermal, and Battery Storage.
• UKAScoreTechnology or IntegrationThe IAA is accredited to ISO/IEC 17065:2012 to provide product conformity certification. UKAS accreditation confirms the organization's competence and impartiality as a certification body.
• DESNZ (Department for Energy Security & Net Zero)coreStrategic or Co-development PartnerThe IAA works regularly with DESNZ to voice opinions of members, shape future policies and grants, and developed key documents including Best Practice Guidance for Under Floor Insulation.
• Which? Trusted TradersmajorGTM or Marketing PartnerPartnership where IAA members can join Which? Trusted Traders with 50% off membership fees for the first six months (for members with 39 employees or less). Provides additional consumer credibility for IAA-certified installers.
• Kiwa Building ProductsmajorStrategic or Co-development PartnerIAA CS partnered with Kiwa Building Products to provide Agrément approvals process for Non-Standard Systems. Kiwa acts as the Agrément issue authority while IAA provides surveillance and audit services.
• EEIG (Energy Efficiency Infrastructure Group)coreStrategic or Co-development PartnerThe IAA works alongside EEIG, collaborating and promoting campaigns including 'Building Better Investment Plan' while working with industry figures and consumer groups to support the insulation industry.
• Association of Distributed EnergyminorStrategic or Co-development PartnerThe IAA is a member of the Association of Distributed Energy, influencing Government Policy for the benefit of consumers and the industry.
• NOCN (National Open College Network)minorStrategic or Co-development PartnerIAA CS works with NOCN to reduce the skills shortage needed to support a carbon zero economy through courses including Domestic Retrofit and Solar Installation.
• CheckatrademinorGTM or Marketing PartnerPartnership offering IAA members exclusive offer to join Checkatrade with 2 months free. Checkatrade receives over 3 million monthly searches from homeowners.
• GreenworkxminorStrategic or Co-development PartnerGreenworkx is on a mission to help grow the workforce needed to deliver net zero. Their digital pathway is designed to boost skilled workers into green jobs, partnering with IAA to support installer training.

Scale indicators9 records

Recent moves2 records

Expansion highlights6 records

Direct peers

• FENSA: UK Competent Persons Scheme for window and door installers. Comparable as a government-authorised installer certification and registration body operating under Building Regulations oversight.
• HETAS: UK competent persons scheme for solid fuel, biomass, and heating installers. Closely comparable as a UK trade certification body serving installers under government-backed schemes.
• TrustMark: UK Government Endorsed Quality Scheme covering trades including retrofit installers. Comparable as the umbrella consumer-protection scheme under which IAA-certified installers are registered.
• NAPIT: UK certification body for electrical, plumbing, heating, and renewable installers. Operates Competent Persons Schemes analogous to IAA's CPS offering for MCS technologies.
• NICEIC: UK electrical certification body and Competent Persons Scheme operator for installers. Comparable as an established UK trade certification and registration body serving installers.
• Kiwa UK: UK testing, inspection, and certification body. Already an IAA partner for Agrément approvals, and a broader competitor across construction product and installer certification.
• British Board of Agrément (BBA): UK-based certification body issuing Agrément certificates for construction products and systems. Highly comparable to the IAA's Agrément-related work and construction/retrofit quality assurance remit.

Emerging players

• OFTEC: UK certification body for oil-fired and renewable heating installers. Comparable scope to IAA's heating and renewable measure certification.
• Elmhurst Energy: UK certification body for energy assessors and retrofit coordinators. Overlaps with IAA's Retrofit Coordinator services and PAS 2035-related offerings.

Broad incumbents

• Gas Safe Register: UK official gas registration body. Comparable as the dominant UK heating installer certification scheme with similar registration, surveillance, and consumer-protection mechanics.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• Xx.com/the_iaa_uk
• LinkedInlinkedin.com/company/installation-assurance-authority

Compliance7 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

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 The Installation Assurance Authority (The IAA)