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21 Degrees

21 Degrees

Passivhaus & low energy experts

+44 (0)1484 461705 Website

Contacts

Contact our Sales team

Mike Shufflebotham

Sales Manager

01484 461705

Contact our MVHR team

MVHR team

MVHR enquiries

01484 463334

Contact our Windows team

Windows Team

Windows enquiries

01484 463336

Certification bodies

Delivering a low energy or Passivhaus building is complex, and you need a solution rather than a single product.


We are committed to using a whole house approach to provide better performing buildings from a comfort, cost and carbon perspective. We supply a range of specialist products and services, including triple glazed

timber windows and doors, MVHR heat recovery ventilation, specialist insulation and airtightness products.


We’ve worked hard to build a reputation for customer service, integrity and responsibility and are committed to ensuring that our products are of the highest quality, backed by industry accreditations. In choosing us, you can rely on expert consultation at every step of your project.

Products

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GBS78 Triple Glazed Timber Inward Opening Window

GBS78 Triple Glazed Timber Inward Opening Window

GBS78 Triple Glazed Timber Outward Opening Window

GBS78 Triple Glazed Timber Outward Opening Window

GBS78-A Triple Glazed Aluminium Clad Timber Inward Opening Window

GBS78-A Triple Glazed Aluminium Clad Timber Inward Opening Window

GBS78-A Triple Glazed Aluminium Clad Timber Outward Opening Window

GBS78-A Triple Glazed Aluminium Clad Timber Outward Opening Window

Case studies

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Transforming tin barns into an EnerPHit-certified home

Transforming tin barns into an EnerPHit-certified home

Erneley Close EnerPHit

Erneley Close EnerPHit

Low Energy Self-Build, Suffolk

Low Energy Self-Build, Suffolk

‘Woodlands’ Oak Frame Passivhaus B&B, Malvern

‘Woodlands’ Oak Frame Passivhaus B&B, Malvern

Literature

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UKCA Declaration of Conformity

UKCA Declaration of Conformity

Windows brochure

Windows brochure

Trade names

  • triple glazed windows
  • mvhr
  • compacfoam
  • pro Clima
  • airtightness
  • zehnder
  • salda
  • specialist insulation
  • green building store