• Solar panels

    Take control of rising energy costs – power your home with solar and cut your reliance on the grid.
    Find out more
  • Triple glazed windows

    Triple glazed & airtight – precision-engineered for comfort, efficiency & long-term performance.
    Find out more
  • MVHR

    Fresh, filtered air all year round – silent, efficient ventilation with heat recovery for healthy homes.
    Find out more
  • Air Source Heat Pumps

    Expertly installed and highly efficient – heat pumps that keep your home cosy, quiet and comfortable year-round.
    Find out more
"Highly knowledgeable"
Rated
5 star rating
by our customers on
"Outstanding experience"

Our energy, where we source it and how we use it, is evolving.

Our world is changing. We believe now is the time to adapt and so we're pioneering a new future.

Our mission is to empower homeowners, architects, and businesses with the knowledge and technology to harness their own sustainable energy and help safeguard the planet.​ 

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We believe our built environment should be designed for optimal efficiency, health, and comfort.

Whether you need a single product or the ultimate Passivhaus, your system needs to be well thought out and designed correctly. We adopt a full-circle approach to provide better performing buildings from a carbon, cost, and comfort perspective to get you the right outcome

Our specialist products and services include renewables such as solar panels and heat pumps, and energy efficient upgrades such as triple-glazed windows and doors, mechanical ventilation with heat recovery (MVHR) systems, and insulation and airtightness products. 

Design services

Have a big project? our design services help you know where to start.

The benefits of being energy efficient

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Ultra low energy

With ultra low energy you'll find a near-zero heating requirement, long term cost savings, and reduced greenhouse gas emissions.

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Health

The benefits to your health include: no mould, cleaner filtered air, reduced pollutants, and optimal humidity at all times.

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Comfort

Factoring comfort into building design results in year round ambient temperature, no draughts, and being able to breathe easy.

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21 Degrees is far and away ahead of everyone else in terms of knowledge and expertise in designing and supplying MVHR systems for low energy and Passivhaus projects.

Mark Siddall, LEAP - Low Energy Architectural Practice

Join the energy efficiency revolution

From energy-efficient upgrades to renewable energy technology, it all starts with finding out your exact requirements.

Request a quote
Change the way you think about energy