Thermotech Fiberglass Windows: Home of the most energy efficient windows in the world - Link to Home
 

Why Thermotech?

Revolutionizing Building Design:

  • Super energy efficient windows are changing the way buildings are designed
  • Specifically, incorporating energy efficient windows allows the designer to:

Maximize Window Design Freedom

  • As you can see from the graph below Thermotech's insulated fiberglass windows have unmatched energy efficiency

Energy Ratings of Typical Casement Windows
Graph: Energy Ratings of Typical Casement Windows

  • Unmatched energy efficiency means Thermotech's fiberglass windows provide superior draft protection, giving designers new design freedom
  • Views can be enjoyed wherever they are available without causing uncomfortable drafts.
    • Conventional windows are often drafty for two reasons.
      • Firstly they leak air.
        • Inherent stability of fiberglass frames means that they stay ‘shop floor' tight in the coldest weather
      • Secondly they have convective drafts – poorly insulating frames and glazing of conventional windows can cause cold air to cascade down the room-side face of the glass
        • The dramatically warmer frame and glazing of Thermotech's Fiberglass windows stay warmer, providing maximum protection against convective drafts
  • Good windows mean that brighter building interiors are possible with more and larger windows, they can now be comfortable too.

 

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Heat Your House With The Sun:

  • Thermotech's fiberglass windows make it easy to capture free heat from the sun by overcoming the two main drawbacks of passive solar heating,
    • Oversized windows cause excessive temperature swings
      • The highly insulating glazing used in Thermotech's windows minimizes temperature swings by reducing both excessive gains and losses.
    • Southern orientation limits applicability
      • Thermotech's Fiberglass windows are so efficient that they don't need a primarily southern orientation to dramatically reduce heating bills.
      • Graph below shows, using energy efficient fiberglass windows contributes four times as much passive solar heat as southern orientation alone

Performance of windows used 
in the Advance Houses Program

Graph: Performance of windows used in the Advance Houses Program

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Improve Indoor Air Quality: 

  • Condensation induced mold growth is often a hallmark of conventional windows.
  • Mould spores can cause asthma and other serious health problems.
  • Thermotech's fiberglass windows' insulated frame and sash and SuperSpacer TM are significantly warmer than other windows, offering more protection against condensation than other windows.
  • Maximum condensation protection means maximum health protection.

 

Image of person enjoying improved air quality because of the quality of the windows

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Shrink Your Heating System: 

  • Fiberglass windows reduce heat loss and increase comfort so much, that heating systems in houses can be totally rethought.
  • With less heat loss, a smaller furnace or boiler and distribution system can be used.
  • With warmer windows, registers and radiators can be moved away from windows.
  • Shortening duct and pipe runs increases system efficiency, while decreasing installation costs (as well as adding flexibility for furniture placement).
    • As the graph below shows, the savings of a properly optimized mechanical system for a 2150 sq.ft super energy efficient house could be as much as $3,900.

 

Heating System Costs

Adapted from Allen Associates. Optimizing Residential Forced-Air HVAC Systems;
Final Report. Canada Mortgage and Housing Corporation, Ottawa (1996) 

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What Experts Use In Their Own Houses: 

  • Two Canadian building science experts were inspired by the Advanced Houses Program and have built Advanced Houses of their own.
  • Gary Sharp of Post Harvest Developments, Consultant to the Advanced Houses Program
    • Picked “the best of the best” technologies
    • Included fiberglass windows along with airtight super-insulated envelope
    • Wishes he went with lower capital cost heating system
      • Why? – hardly ever uses it
  • Kevin Lee of L.E.E. Building Solutions
    • picked fiberglass for their energy performance
    • also valued indoor air quality and low maintenance benefits

    “Most importantly, however I wanted lots of windows (mainly looking at a great northern view) AND I didn't want to feel cold – Thermotech was the obvious (and really the only logical) choice "

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