During the early stages of design, we provide self-builders and architects with informed and quantified decisions regarding the building fabric specification.
Who we are More about us
At 21°, we believe you thrive in the places where you experience comfort.
Delivering a low energy or Passivhaus building is complex, and you need a solution rather than a single product.
At 21°, 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, insulation and airtightness products.
We’ve worked hard to build a reputation for customer service, integrity and responsibility. We are committed to ensuring that our products are of the highest quality, backed by industry accreditations, and specified by companies at the forefront of energy-efficient construction. By choosing us you can rely on expert consultation at every step of your project.
Our products
We offer a wide range of products, including triple-glazed timber & alu-clad windows and doors advanced MVHR heat recovery ventilation, specialist airtightness & insulation products.
Certified and quality tested
All of our products are thoroughly tested and quality assured.
FSC Certified Wood
Part Q Compliant
Secured by design
The benefits of being energy-efficient
Health
The benefits to your health include: no mould, cleaner filtered air, reduced pollutants and optimal humidity at all times.
Comfort
For comfort we provide: year-round ambient temperature, no draughts and thermal insulation.
Ultra low energy
With ultra low energy you'll find a near zero heating requirement, long-term cost savings and reduced greenhouse gas emissions.
Our consultancy services
We offer design services to help you best achieve your objectives
Shop for products you need on the 21° online store
Browse our range of products for airtightness and specialist insulation and our MVHR filters.
Training & development
Training and CPDs
We offer a range of training and continuous professional development opportunities for building professionals, focused on best practice design and construction for Passivhaus and low energy buildings.
News & inspiration hub
Webinars, interviews, technical guides, news, case studies and more.
21° 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
How can we help?
Visit the showrooms
Visit us at our showrooms in Huddersfield and Swindon or catch us at exhibitions around the UK to see our windows and doors.
Take a step towards a more energy efficient home today
From triple-glazed and alu-clad windows and doors to exceptional solutions to MVHR, it all starts with finding out your exact requirements.
Request a quote
