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2. Insulated glazing - Wikipedia

   en.wikipedia.org/wiki/Insulated_glazing

   If the IG unit had a gas fill (e.g. argon or krypton or a mixture) the gas is naturally dissipated and the R-value suffers. Since 2004, there are also some companies offering the same restoration process for failed double-glazed units [25] in the UK, and there is one company offering restoration of failed IG units in Ireland since 2010.

3. Window insulation - Wikipedia

   en.wikipedia.org/wiki/Window_insulation

   Clear double glazing has a U-factor between 1.8 and 3 W/(m 2 ⋅K) or between 0.3 and 0.5 Btu/(h⋅ft 2 ⋅°F) (about R-2) Clear triple glazing has a U-factor between 0.5 and 1 W/(m 2 ⋅K) or between 0.1 and 0.2 Btu/(h⋅ft 2 ⋅°F) (about R-3). Double and triple glazing are critical for energy efficiency. Single glass windows are no longer ...

4. A. O. Smith - Wikipedia

   en.wikipedia.org/wiki/A._O._Smith

   A. O. Smith Corporation is an American manufacturer of both residential and commercial water heaters and boilers, and the largest manufacturer and marketer of water heaters in North America. It also supplies water treatment and water purification products in the Asian market. [ 5 ]

5. Trombe wall - Wikipedia

   en.wikipedia.org/wiki/Trombe_wall

   However, it is recommended to use the single glass with a shutter for the evening and night times, to offset its heat losses. High transmission glazing maximizes solar gains of the Trombe wall while allowing to recognize the dark brick, natural stones, water containers, or another attractive thermal mass system behind the glazing as well.

6. Quadruple glazing - Wikipedia

   en.wikipedia.org/wiki/Quadruple_glazing

   Standard quadruple glazed window - openable The quadruple glazing, Q-Air, on Deg 8 building in Oslo, Norway (2020). Renovation brings U g value of 0,29 W/(m 2 K) [R-value 20 Quadruple glazing ( quadruple-pane insulating glazing ) is a type of insulated glazing comprising four glass panes, commonly equipped with low emissivity coating and ...

7. Gas heater - Wikipedia

   en.wikipedia.org/wiki/Gas_heater

   Upright non-flued liquefied petroleum gas heater, 1970s A wall mounted gas heater that runs on either propane or natural gas. A gas heater is a space heater used to heat a room or outdoor area by burning natural gas, liquefied petroleum gas, propane, or butane. Indoor household gas heaters can be broadly categorized in one of two ways: flued or ...