• Case Studies
  • Airtightness Testing
  • Free MVHR Sizing Tool
  • Contact
  • About us
Heat, Space and Light Ltd
MVHR. Building airtightness testing. Healthy, comfortable, energy efficient homes
Menu Close
  • Case Studies
  • Airtightness Testing
  • Free MVHR Sizing Tool
  • Contact
  • About us

Windows

How to calculate how much energy your windows will save from its U-value

6 April 2016Patrick 8 Comments
Old cottage made airtight and insulated with woodfibre insulation

The number assigned to a building fabric element (eg, a window) that represents its thermal resistance is called its U-value. A U-value tells us how quickly or slowly it takes for heat to pass through it. Fabrics with lower U-values… Continue reading →

Health, PassivHaus, Windows Calculations, Triple-Glazed, U-value, Windows

Why double-glazing doesn’t solve your comfort issue – and can make it worse

12 February 2016Patrick 2 Comments

See if any of this sounds true to you. You live in a typical English home. It’s made of brick, it has timber-frame and single-glazed or double-glazed windows and woolly yellow insulation stuffed into the rafters in the loft. It… Continue reading →

Air Quality, Airtightness, Windows Double-glazing, Health, Ventilation, Windows

Recent Comments

  • Patrick on Five most common problems with Mechanical Heat Recovery (MVHR) Units
  • Francie Sheridan on Five most common problems with Mechanical Heat Recovery (MVHR) Units
  • Patrick on Five most common problems with Mechanical Heat Recovery (MVHR) Units
  • Wayne Evans on Five most common problems with Mechanical Heat Recovery (MVHR) Units
  • Patrick on How to DIY your own MVHR ventilation duct system (16 steps)

Recent Posts

  • MVHR retrofitted carefully into mid-20th Century home low energy renovation
  • Is my home too draughty for MVHR?
  • Supremely Efficient Dutch Barn New Build with High Performance Cooling via MVHR
  • MVHR system balancing and handover in Surrey luxury eco new build
  • Are free MVHR designs any good?

Categories

  • Air Conditioning
  • Air Quality
  • Air Source Heat Pump
  • Airtightness
  • Architecture
  • Branch vs Radial Ducting
  • Building Regulations
  • Case Study
  • Comfort
  • Condensation
  • Cooker hoods
  • Cooling
  • DIY
  • Energy
  • Environment
  • Fireplace
  • Forensic Airtightness Testing
  • Health
  • Heat Pumps
  • London
  • Money
  • Mould
  • MVHR
  • New Build
  • Office Life
  • Oil
  • Overheating
  • PassivHaus
  • Plastic Recycling
  • SAP
  • Shipping Containers
  • Sustainability
  • Uncategorised
  • Ventilation
  • Virus
  • Windows
© 2023 Heat, Space and Light Ltd. All rights reserved.
Fashionista by aThemes