21degrees

What 21degrees does

21 Degrees is a UK-based energy efficiency solutions provider operating as a trading name of GoEco Renewables Limited, part of the Efficient Building Solutions group. Founded in 2007 with corporate roots tracing to Environmental Construction Products (1995), the company specializes in Passivhaus-standard building products and low-energy construction solutions, with operations spanning 13 regional offices across England. Its product portfolio includes high-performance triple-glazed timber windows and doors (GBS98 range), mechanical ventilation with heat recovery (MVHR) systems featuring up to 95% heat recovery efficiency, solar PV panels, battery storage, air and ground source heat pumps, Compacfoam insulation, and airtightness products achieving Class 4 ratings.

The company operates a vertically integrated business combining product supply, bespoke design services, and in-house installation. MVHR system design, Passivhaus consultancy, and low-energy building design services are delivered alongside the product portfolio, enabling a full-circle engagement from specification through installation. GTM motion is sales-led and enterprise field sales driven, with regional offices handling quote-based pricing (no public price list), complemented by an e-commerce shop for accessories, permanent exhibition presence at the NSBRC in Swindon, and CPD-certified training programs for building professionals. Target customers include homeowners, self-builders, architects and specifiers, commercial clients (NHS, public sector, education, agriculture), and councils undertaking retrofit projects.

Revenue is generated through four streams: product sales (one-time), design and consultancy services (professional services), in-house installation services, and e-commerce. Distribution combines direct regional sales offices, showrooms in Huddersfield, Swindon, and Poole, and nationwide installation coverage using directly employed FENSA-registered installers. The company is FCA registered as an Appointed Representative of Shermin Finance Limited for credit broking. In 2024, the company executed an aggressive consolidation strategy, acquiring five regional specialists and unifying all entities under the 21 Degrees brand in November 2024.

Name

21degrees

Legal name

GoEco Renewables Limited

Website

http://21degrees.com

Company type

Private

Operating status

Operating

Headcount range

1–10 employees

Short description

21 Degrees is a UK-based energy efficiency solutions provider offering Passivhaus-standard windows, MVHR systems, solar panels, heat pumps, and insulation across 13 regional offices, serving homeowners, architects, commercial clients, and public sector organizations.

Ownership category

akta.pro rank

Product category

Energy Efficient Building Products

NAICS

Plumbing, Heating, and Air-Conditioning Contractors (238220), Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (3334), Heating Equipment (except Warm Air Furnaces) Manufacturing (333414), Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing (333415)

SIC

Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585), Heating Equipment, Except Electric & Warm Air Furnaces (3433), Steam & Air-Conditioning Supply (4961)

akta.pro primary industry

Energy Efficiency & Weatherization Retrofit (HSAPAEAF)

akta.pro secondary industries

Ventilation, Ducting & Air Distribution Equipment (IMAHAKAG), Windows (IMADAIAC), Heat Exchangers, Coils & Hydronic HVAC Components (IMADANAF), Exterior Insulation & Weatherproofing (House Wrap, Air/Water Barriers) (HSAPAKAK), Attic Insulation, Air Sealing & Ventilation Upgrades (HSAPACAI), Blown-In/Loose-Fill Insulation Systems (IMADAGAK)

Keywords

• Passivhaus building products
• MVHR ventilation systems
• Triple glazed windows
• Renewable energy installations
• Low energy building design

Headquarters

HQ city

Geneva

HQ country

Switzerland

HQ region

Europe

Offices13 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

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

Revenue model

1. Product Sales: Sale of energy-efficient building products including windows, doors, solar panels, heat pumps, MVHR systems, batteries, and insulation materials through 13 UK locations and online shop.
2. Design & Consultancy Services: MVHR system design, Passivhaus consultancy, and low-energy design services provided to self-builders, architects, and commercial clients. Full-circle approach from design through to installation.
3. Installation Services: In-house installation teams for windows, doors, and renewable energy systems across the UK.
4. E-commerce Shop: Online shop for specialist insulation, MVHR filters, loft hatches, and performance sealing products.

Pricing tiers

Go-to-market motion3 records

Distribution channels4 records

Marketing channels8 records

Core offering

21 Degrees supplies and installs energy-efficient building products including triple-glazed timber windows and doors, MVHR ventilation systems, solar PV panels, battery storage, air source and ground source heat pumps, Compacfoam insulation, and airtightness products for low-energy and Passivhaus homes and buildings. The offering is complemented by in-house MVHR system design, Passivhaus consultancy, low-energy whole-building design services, CPD training for professionals, and a small e-commerce shop for accessories such as MVHR filters, loft hatches, and performance sealing.

Product overview

21 Degrees is a comprehensive energy efficiency solutions provider offering a portfolio of products and design services for sustainable homes and buildings. The core offering includes high-performance triple glazed timber windows and doors (GBS98 range), MVHR ventilation systems, solar panels, battery storage, heat pumps (air and ground source), Compacfoam insulation, and airtightness products. These products are complemented by professional design services including MVHR system design, Passivhaus consultancy, and low-energy building design support. The company operates through multiple UK locations and serves homeowners, architects, commercial clients, and public sector organizations. The company was founded in 2007 and operates as part of the Efficient Building Solutions group, with FCA registration for credit broking services.

Differentiator

Problem solved

Functional benefit

Products and services

• Triple Glazed Windows High-performance triple glazed timber windows available in GBS98 and aluminium-clad ranges for low-energy and Passivhaus homes, achieving Class 4 airtightness and whole-window U-values of 0.75 W/m²K with PHPP data available.
• Triple Glazed Doors High-performance triple glazed doors including entrance doors, double doors, and lift and slide doors, meeting PAS24:2022 security standards and Class 4 airtightness for low-energy homes.
• MVHR (Mechanical Ventilation with Heat Recovery) Mechanical ventilation with heat recovery systems (including Zehnder ComfoAir Q units) that supply fresh filtered air while recovering up to 95% of heat from outgoing stale air, with reversible heat exchange for minimal summer cooling.

Quantifiable outcome

• Up to 95% heat recovery efficiency with MVHR systems
• +3 more outcomes

Named customers5 records

Segments5 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Nine partnerships are on record, tiered core and minor.

• Passivhaus TrustcoreOthersMembership and endorsement partnership. 21 Degrees products and services are designed to meet Passivhaus standards. Featured as trusted partner on website with logo displayed.
• MCS (Microgeneration Certification Scheme)coreOthersMCS certification for microgeneration products including solar panels and heat pumps. Logo displayed on website indicating certified installer status.
• RECC (Renewable Energy Consumer Code)coreOthersConsumer code membership ensuring ethical standards for renewable energy installations. Logo displayed on website.
• Gas Safe RegistercoreOthersGas Safe registered installers for heat pump installations requiring gas work. Certification displayed on About page.
• TrustmarkcoreOthersGovernment-endorsed quality scheme for home improvement companies. Trustmark logo displayed indicating vetted and quality-checked trader status.
• CHAS (Contractors Health and Safety Assessment)minorOthersHealth and safety accreditation for contractors. Logo displayed showing commitment to safety standards.
• FENSA (Fenestration Self-Assessment Scheme)coreOthersFENSA registration for window and door installers, audited annually. Required for building regulation compliance.
• ZehndercoreTechnology or IntegrationPartnership with Zehnder for MVHR units including ComfoAir Q models. Used in Passivhaus projects including Woodlands B&B case study.
• National Self Build & Renovation Centre (NSBRC)coreChannel Partner/ Reseller/ DistributorPermanent exhibition stand at NSBRC in Swindon featuring triple glazed windows, timber lift and slide door, and sample MVHR systems in the Piazza area.

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Warma UK: UK-based installer of external wall insulation, cavity wall insulation, loft insulation and renewable heating - a regional peer in residential energy efficiency retrofit.
• Ecomerchant: UK Passivhaus-focused supplier of insulation, airtightness membranes, tapes and related building fabric products to self-builders and trades - overlapping with 21 Degrees' specialist insulation and airtightness range.
• Kensa Heat Pumps: UK-based heat pump specialist (ground and air source) selling direct to installers and self-builders with design support, overlapping strongly with 21 Degrees' heat pump and renewable installation offering.
• NIBE Energy Systems UK: Supplies heat pumps, MVHR and renewables with UK installer networks and training - a directly comparable product portfolio to 21 Degrees' heating and ventilation stack.
• Enhabit: UK home energy retrofit company delivering whole-house energy efficiency upgrades including insulation, ventilation and renewables - a peer to 21 Degrees' whole-home energy retrofit proposition.

Broad incumbents

• Daikin UK: Global HVAC and heat pump manufacturer with UK installation partner network and own renewable heating line; broad incumbent competing for the same heat pump and ventilation projects.
• Vaillant UK: Major boiler and heat pump manufacturer offering aroTHERM heat pumps through UK installer networks; competes with 21 Degrees in the heat pump installation and servicing market as a much larger incumbent.
• Bosch Thermotechnology UK: Major heating, hot water and air conditioning OEM with UK installer programmes for heat pumps and hybrid systems; broader portfolio than 21 Degrees but directly competing in residential heat pump installation.
• Mitsubishi Electric UK Living Environment Systems: Major HVAC and heat pump manufacturer with Ecodan range and UK installer network; broad incumbent in the same heating and ventilation category as 21 Degrees' offerings.
• Octopus Energy (Heat Pumps / Home Services): UK utility-scale installer of heat pumps, solar and batteries with strong consumer brand and financing; competes for the same homeowners and is rapidly expanding renewable installation capacity.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/@weare_21degrees/videos
• Xx.com/21_degrees

Compliance12 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries8 records

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 21degrees