Warm
- Company typePrivate
- Founded2009
- HeadquartersPlymouth, United Kingdom
- Headcount1–10
- GTM typeB2B
- OfferingServices
Warm firmographics
Firmographics- Name
- Warm
- Legal name
- WARM
- Website
- https://peterwarm.co.uk
- Company type
- Private
- Founded year
- 2009
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Ownership category
- akta.pro rank
Warm industry classification
Industry- Product category
- Passivhaus and Low-Energy Building Consultancy
- NAICS
- Plumbing, Heating, and Air-Conditioning Contractors (238220)
- SIC
- Electrical Work (1731)
- akta.pro primary industry
- Chillers, Boilers & Central Plant Operations (BPABACAG)
- akta.pro secondary industries
- Exterior Insulation & Weatherproofing (House Wrap, Air/Water Barriers) (HSAPAKAK), Duct Sealing, Insulation & Airflow Balancing (HSAOAIAH), Building Envelope & Weatherproofing (Roofing/Waterproofing/Gutters) (IMAIABAG)
Keywords
Where Warm is headquartered
LocationHeadquarters
- HQ city
- Plymouth
- HQ country
- United Kingdom
- HQ region
- Europe
Offices1 record
Markets served
Warm business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Marketing or Sales, Technology or R&D, Others
Revenue model
- Passivhaus Certification Services: Independent Passivhaus and low-energy building certification providing confidence that buildings meet agreed standards and perform as intended, from design through to completion. WARM was among the first Passivhaus certifiers in the UK.
- Design and Consultancy: Independent, practical support to help low-energy projects make confident decisions from early project briefs through to detailed design and on-site technical input. Services include Passivhaus consultancy, whole life carbon, airtightness testing, thermal bridge modelling, building services optimization.
- Testing and Monitoring: Building testing and performance monitoring grounded in real-world experience including airtightness testing, coheating tests, energy use analysis, and comfort analysis. Helps identify issues early and validate design assumptions.
- Training Services (via Coaction): Practical training and knowledge-sharing through sister company Coaction Training CIC, established in 2009. Courses include Passivhaus Bitesize, Certified Passivhaus Designer, Certified Passivhaus Tradesperson, Passivhaus in Practice, Retrofit Delivery, and Introduction to THERM.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Individual Dwellings Certification |
Go-to-market motion1 record
Distribution channels2 records
Marketing channels6 records
Warm product offering
Product offeringCore offering
WARM is an independent, family-run Passivhaus and low-energy building consultancy providing four core services: Design and Consultancy (Passivhaus design support, thermal bridge modelling, airtightness design, whole life carbon and retrofit), independent Building Certification (Passivhaus Classic, Passivhaus Plus, EnerPHit, AECB CarbonLite), Training (via sister company Coaction Training CIC), and Testing and Monitoring (airtightness testing, coheating tests, energy use and comfort analysis). It serves contractors, end clients, project managers, architects, and consultants across the UK low-energy building sector from early design through delivery and use.
Product overview
WARM is an independent, family-run low-energy building consultancy providing four core service offerings: Design and Consultancy (covering Passivhaus design, whole life carbon, airtightness, thermal bridging, and retrofit), Building Certification (independent Passivhaus certification), Training (delivered through sister company Coaction including Certified Passivhaus Designer and Tradesperson courses), and Testing and Monitoring (building performance testing, coheating tests, and post-occupancy evaluation). WARM supports clients, designers, contractors, and the supply chain to deliver high-performance buildings.
Differentiator
Problem solved
Functional benefit
Products and services
- Design and Consultancy Independent, practical consultancy support helping low-energy projects make confident decisions from early project briefs through detailed design and on-site technical input. Covers Passivhaus consultancy, whole life carbon, zero carbon building standards, airtightness design, thermal bridge modelling, building services optimisation, and retrofit solutions for contractors, end clients, architects and consultants.
- Building Certification Independent Passivhaus and low-energy building certification providing confidence that buildings meet agreed standards and perform as intended, from design through completion. WARM certifies against Passivhaus Classic, Passivhaus Plus, EnerPHit, and AECB CarbonLite standards for individual dwellings, multi-residential, education, leisure, and commercial schemes.
- Training (Coaction Training CIC) Practical training and knowledge-sharing delivered through sister company Coaction Training CIC to help designers, contractors, and clients build confidence in low-energy design and delivery. Courses include Passivhaus Bitesize, Certified Passivhaus Designer, Certified Passivhaus Tradesperson, Passivhaus in Practice, Retrofit Delivery, and Introduction to THERM, all endorsed by the Passivhaus Trust.
- Testing and Monitoring Building performance testing and monitoring grounded in real-world experience to help teams understand how buildings actually perform rather than just how they were designed. Includes airtightness testing, coheating tests, energy use analysis, and comfort analysis to validate design assumptions and identify issues early.
Quantifiable outcome
- St Sidwell's Point achieved airtightness of 0.3 m³/hr/m² @ 50 Pa, exceeding Passivhaus requirement of 0.4 m³/hr/m²
- +3 more outcomes
Companies that use Warm
Customer profileNamed customers20 records
Segments5 records
Ideal customer profiles4 records
Warm technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature6 records
Warm partnerships and signals
Strategic signalPartnerships
Two partnerships are on record, tiered core.
- Coaction Training CICcoreCoaction Training CIC is WARM's sister company established in 2009 to support the construction industry with practical, experience-led training in low-energy building. WARM's team members serve as trainers for Coaction courses including Certified Passivhaus Designer, Certified Passivhaus Tradesperson, and other courses.
- Passivhaus TrustcoreCoaction's training courses are endorsed by the Passivhaus Trust. WARM director Sally Godber co-authored industry guides for the Trust including Air to Water Heat Pumps, Steel in Passivhaus Construction, and How to Build a Passivhaus.
Scale indicators10 records
Recent moves6 records
Expansion highlights6 records
Warm competitors and assessment
Company assessmentBroad incumbents
- Hydrock (now part of Stantec): UK engineering and sustainability consultancy with building performance and low-energy design services. Overlaps with WARM on public-sector and education Passivhaus work.
- Max Fordham: Established UK building services engineering consultancy with a growing Passivhaus and low-energy practice. Competes with WARM on larger schemes (and is itself a WARM client) but operates across a broader MEP portfolio.
- Cundall: Global multi-disciplinary engineering and sustainability consultancy with active Passivhaus and net-zero capability. Competes on larger commercial and education projects where WARM also bids.
- Buro Happold: Large international engineering consultancy with sustainability, building performance, and low-energy design teams. Increasingly competes with WARM on complex public-sector Passivhaus commissions.
Direct peers
- Etude (formerly ECD Architects): Architectural and Passivhaus consultancy with deep retrofit and new-build expertise, providing certification, PHPP modelling, and design services in the UK. Direct competitor on Passivhaus certification commissions.
- Sustainable BY Design: Specialist low-energy and Passivhaus consultancy offering design, certification, PHPP modelling, and airtightness services across UK residential and education sectors. Closely comparable niche positioning to WARM.
- Elementa Consulting: UK MEP and sustainability consultancy with a strong Passivhaus and low-energy building practice. Directly comparable to WARM in delivering Passivhaus certification, PHPP modelling, and design support for residential, education, and public-sector projects.
Regional players
- John Gilbert Architects: Scottish architecture and Passivhaus consultancy focused on social housing and retrofit. Geographic overlap (Scotland) and similar public-sector client base to WARM, though with a more architecture-led offering.
Others
- AECB (Association for Environment Conscious Building): UK membership body promoting sustainable building, including the AECB CarbonLite standard that WARM helps certify. Not a direct competitor, but the standards body whose work underpins WARM's certification revenue.
- Passivhaus Trust: UK non-profit that promotes Passivhaus standards and endorses Coaction's training courses. Functions as an ecosystem partner (training endorsement, technical guidance) rather than a commercial competitor.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat6 records
Key risks6 records
Key highlights7 records
Customer concentration
Warm social profiles
Digital presenceWarm compliance and trust
Trust signalCompliance6 records
Warm financial estimates
Financial estimateRevenue estimate
Valuation estimate
Warm leadership team
Management profileNumber of profiles
Profiles13 records
Warm subsidiaries and ownership
Company hierarchySubsidiaries1 record
Warm funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Warm 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 Warm
What does Warm do?
WARM is an independent, family-run Passivhaus and low-energy building consultancy providing four core services: Design and Consultancy (Passivhaus design support, thermal bridge modelling, airtightness design, whole life carbon and retrofit), independent Building Certification (Passivhaus Classic, Passivhaus Plus, EnerPHit, AECB CarbonLite), Training (via sister company Coaction Training CIC), and Testing and Monitoring (airtightness testing, coheating tests, energy use and comfort analysis). It serves contractors, end clients, project managers, architects, and consultants across the UK low-energy building sector from early design through delivery and use.
Is Warm a public or private company?
Warm is a private company. It is classified as family owned and is currently operating.
When was Warm founded?
Warm was founded in 2009. It employs 1 to 10 people.
Where is Warm based?
Warm is headquartered in Plymouth, United Kingdom, in the Europe region.
How does Warm make money?
Four revenue lines are on record. Passivhaus Certification Services are the primary driver. The others are design and Consultancy, testing and Monitoring and training Services (via Coaction).
Who are Warm's main competitors?
Broad incumbents on record are Hydrock (now part of Stantec), Max Fordham, Cundall and Buro Happold. Direct peers are Etude (formerly ECD Architects), Sustainable BY Design and Elementa Consulting. John Gilbert Architects is listed as a regional player. Others are AECB (Association for Environment Conscious Building) and Passivhaus Trust.
Does Warm have an API?
No public API is recorded for Warm.
What industry is Warm in?
Warm's product category is Passivhaus and Low-Energy Building Consultancy. Its primary akta.pro industry code is BPABACAG, Chillers, Boilers & Central Plant Operations, with a secondary code of HSAPAKAK, Exterior Insulation & Weatherproofing (House Wrap, Air/Water Barriers). Its NAICS code is 238220 and its SIC code is 1731.