Steamy Windows
Family-Run Since 2003

Energy-Efficient Glazing — Cut Your Bills & Stay Warmer

A-rated Low-E glass, argon gas-filled units and secondary glazing — energy efficient glazing solutions supplied and fitted across Greater Manchester, Lancashire, Cheshire and West Yorkshire.
Get a Free QuoteCall 0800 328 8573

Energy-Efficient Glazing Technologies We Use

Every window and door we fit uses the latest energy efficient glazing technology to keep heat in, cold out and your energy bills down — whether you're upgrading a single unit or retrofitting an entire property.

Low-E Glass

Low-emissivity (Low-E) glass has an ultra-thin metallic coating that reflects heat back into your room while still allowing natural light through. It significantly reduces heat loss through your glazing — one of the biggest sources of energy waste in UK homes.

Argon Gas-Filled Units

The space between the panes in a double glazed unit is filled with argon gas — a dense, inert gas that conducts heat far less efficiently than air. Combined with Low-E glass, argon filling dramatically improves the thermal performance of every energy efficient glazing unit we install.

A-Rated Windows

The UK's Window Energy Rating (WER) scheme rates windows from G (least efficient) to A+ (most efficient). We supply and fit A-rated windows as standard — independently certified to deliver the best balance of thermal insulation, solar gain and air leakage performance.

Secondary Glazing

Where replacing the primary window isn't feasible — for example in listed buildings or period properties — secondary glazing adds a second pane on the inside of an existing window. It dramatically reduces heat loss and draughts without altering the external appearance of the property.

Upgrading Single-Glazed Units

Single glazed windows lose around 10 times more heat than modern double glazing. We can replace single-glazed units in existing frames where the frame is in good condition, or supply and fit entirely new A-rated double glazed windows — the most effective energy efficient glazing upgrade for older properties.

Warm-Edge Spacer Bars

Traditional aluminium spacer bars (the strip between the two panes) conduct cold to the edge of the glass, causing condensation and heat loss at the perimeter. We use warm-edge spacer bars that reduce edge-of-glass heat loss by up to 94% compared to standard aluminium, improving overall window energy ratings.

Benefits of Energy-Efficient Glazing for Homes & Commercial Properties

Upgrading to energy efficient glazing is one of the most impactful improvements you can make to any property — reducing heat loss through your windows by up to 70% compared to older single-glazed or early double-glazed units. The benefits are felt immediately.

  • ✓Lower energy bills — less heat escaping through your windows means your heating system works less hard.
  • ✓Warmer, more comfortable rooms — eliminate cold spots and draughts near windows and patio doors.
  • ✓Reduced condensation — warm-edge spacers and Low-E glass keep glass surfaces warmer, significantly reducing internal condensation.
  • ✓Improved EPC rating — upgrading to energy efficient glazing can raise your property's Energy Performance Certificate rating, increasing its market value.
  • ✓Noise reduction — wider double glazed units with argon filling also reduce external noise transmission.
  • ✓10-year manufacturer's guarantee — on every unit we supply and install.
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Energy efficient glazing installation — double glazed windows fitted by Steamy Windows across the North West
Secondary glazing installation in a period property — energy efficient glazing for listed buildings in Lancashire

Replacing Old Single-Glazed & Inefficient Units

Many older properties across Greater Manchester, Lancashire, Cheshire and West Yorkshire still have single-glazed windows or early double-glazed units that no longer perform well. Failed seals, misted panes and draughty frames are all signs that your glazing is working against you rather than for you.

At Steamy Windows, we offer a full assessment of your existing windows and doors. Where the frame is still in good structural condition, we can often replace just the sealed glass unit — a cost-effective way to improve your energy efficient glazing without a full window replacement. Where the frame is worn, damaged or no longer achieving a good seal, we'll recommend and supply a complete A-rated replacement.

For listed buildings and conservation areas where changing window profiles isn't permitted, we offer discreetly fitted secondary glazing that adds a second pane to the inside of your existing window — achieving performance close to modern double glazing without altering the external appearance.

Our team will advise you honestly on the best and most cost-effective solution for your property.

Call 0800 328 8573

Our Energy-Efficient Glazing Work

Recent Projects

A selection of energy efficient glazing installations — from A-rated window replacements to secondary glazing in period properties — across Bolton, Wigan, Manchester, Warrington, Preston and West Yorkshire.
Energy efficient glazing — A-rated double glazed window installation in Bolton

A-rated windows — Bolton

Low-E glass window replacement — energy efficient glazing in Manchester

Low-E glass replacement — Manchester

Secondary glazing fitted in period property — Lancashire

Secondary glazing — Lancashire

Argon-filled double glazed units — Wigan

Argon-filled units — Wigan

Single-to-double glazing upgrade — energy efficient glazing in Warrington

Single-to-double upgrade — Warrington

Energy-efficient patio door installation — Preston

Energy-efficient patio doors — Preston

Ready to Reduce Your Energy Bills? Get a Free Quote Today

Our team will visit your home or commercial property, assess your existing glazing and recommend the most cost-effective energy efficient glazing upgrade to improve thermal performance — with no obligation and no pressure. All work comes with our 10-year manufacturer's guarantee and our standard 7–14 day turnaround.
Get a Free QuoteCall 0800 328 8573

Energy-Efficient Glazing — FAQs

Your Questions Answered

Everything you need to know about energy efficient glazing options, upgrades and installation across Bolton, Wigan, Manchester and the wider North West. Still have questions? Call us free on 0800 328 8573.

Low-emissivity (Low-E) glass has a microscopically thin metallic coating applied to one of the inner pane surfaces. This coating reflects long-wave infrared heat — the warmth from your radiators and body heat — back into the room, while still allowing visible light and short-wave solar energy to pass through. The result is a window that keeps your home warmer in winter without noticeably darkening the room.
The UK's Window Energy Rating (WER) scheme, administered by the British Fenestration Rating Council (BFRC), rates windows from G (poorest) to A+ (best). An A-rated window is independently certified to deliver excellent thermal insulation, low air leakage and good solar gain — the three key measures of glazing performance. We supply and fit A-rated windows as standard across all our energy efficient glazing product ranges.
Savings depend on the size of your property, how many windows you're upgrading and what you're replacing. Replacing single-glazed windows with modern A-rated energy efficient glazing can cut heat loss through your windows by up to 70%. The Energy Saving Trust estimates that replacing all single-glazed windows in a typical semi-detached home with A-rated double glazing could save a meaningful amount per year on heating bills — though exact figures vary by property. We'll give you an honest assessment during your free site visit.
Yes — in many cases. If your existing frame is structurally sound, in good condition and still achieving a proper seal, we can replace just the sealed double glazed unit inside it. This is a cost-effective way to upgrade the thermal performance of your glazing without a full window replacement. During our site visit we'll assess whether your frame is suitable for a unit-only replacement or whether a full replacement is the better option.
Secondary glazing involves fitting a slim additional pane on the inside of an existing window, creating a sealed air gap that significantly reduces heat loss and draughts. It's particularly suitable for listed buildings, conservation areas, or any situation where the external appearance of the window cannot be changed. It can achieve thermal performance approaching modern energy efficient glazing without any alteration to the primary window.
Yes — we work with offices, care homes, schools, hospitality venues and other commercial premises across the North West. Energy efficient glazing can have a significant impact on commercial heating costs and can contribute to improved EPC ratings for commercial buildings. Contact us for a free, no-obligation assessment and quote for your commercial property.
We cover Greater Manchester, Lancashire, Cheshire and West Yorkshire, with local teams in Bolton, Manchester, Wigan, Warrington, Preston and West Yorkshire. Call our freephone number 0800 328 8573 or contact your nearest branch to arrange a free site visit and quote for energy efficient glazing.

Ready for New Windows, Doors or a Conservatory?

Get a fast, free quote from your local double glazing specialists. Over 20 years of experience, 10-year guarantee on all work, and a 7–14 day turnaround. We're happy to beat any like-for-like quote.
Get a Free Quote TodayCall 0800 328 8573