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Filter located and installed so as to facilitate access and regular service by the owner

Filter located and installed so as to facilitate access and regular service by the owner
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Furnace filter resistance varies by surface area; deeper pleats add surface area

Furnace filter resistance varies by surface area; deeper pleats add surface area
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Furnace filters come in many sizes; verify the correct size when purchasing for proper fit in the filter slot.

Furnace filters come in many sizes; verify the correct size when purchasing for proper fit in the filter slot.
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Furnace filters that are MERV 6 or higher protect the HVAC equipment and improve indoor air quality

Furnace filters that are MERV 6 or higher protect the HVAC equipment and improve indoor air quality
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Generator Safety Fact Sheet

A sheet explaining the dangers of using a generator and how to operate and install a generator safely.
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Health in the Ultimate Z.E.N. Home

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How to Install a Whole-House Water Softener | Ask This Old House

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Ice Dam Formation and Prevention

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Ice dams form when warmth from the attic causes roof snow to melt and flow to roof eaves where it refreezes at the colder overhang and forms a buildup of ice causing more snowmelt to puddle where it can wick back through shingles and leak into the attic

Ice dams form when warmth from the attic causes roof snow to melt and flow to roof eaves where it refreezes at the colder overhang and forms a buildup of ice causing more snowmelt to puddle where it can wick back through shingles and leak into the attic
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Ice dams formed by melting of snow on roofs can affect roofs, walls, ceilings, siding, and insulation.

Ice dams formed by melting of snow on roofs can affect roofs, walls, ceilings, siding, and insulation.
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If filter is inaccessible, locate the air filter between the return air plenum and the air handler box

If filter is inaccessible, locate the air filter between the return air plenum and the air handler box
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If furnace is accessible, locate the air filter between the return air plenum and the air handler box

If furnace is accessible, locate the air filter between the return air plenum and the air handler box
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If the furnace is hard to access, locate filters at return registers covered by hinged grilles that are easy to open from inside the home

If the furnace is hard to access, locate filters at return registers covered by hinged grilles that are easy to open from inside the home
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Insert the new furnace/air handler filter in the filter slot of the furnace or air handler with the arrow pointed in the direction of air flow.

Insert the new furnace/air handler filter in the filter slot of the furnace or air handler with the arrow pointed in the direction of air flow.
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Install a filter with a MERV rating of 6 or higher in each ducted mechanical system

Install a filter with a MERV rating of 6 or higher in each ducted mechanical system
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Install an access panel cover with a gasket and duct tape the edges

Install an access panel cover with a gasket and duct tape the edges
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Install the filter media box between the return air plenum and the air handler box

Install the filter media box between the return air plenum and the air handler box
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Installation of permanent exterior low-E storm windows is simple and easy, requiring a few basic tools and about 20 minutes of labor

Installation of permanent exterior low-E storm windows is simple and easy, requiring a few basic tools and about 20 minutes of labor
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Interior storm windows have very little impact on the appearance of the window, although the window frame may appear slightly wider

Interior storm windows have very little impact on the appearance of the window, although the window frame may appear slightly wider
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Lack of insulation over the top plate can lead to ice dam formation on a low sloped roof.

Lack of insulation over the top plate can lead to ice dam formation on a low sloped roof.
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Large Industrial and Commercial-type Generator

A large diesel generator with an engine size greater than 50bhp or 37W. This type of generator can be used during a power outage and runs on diesel, gasoline, propane, or natural gas.
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Leaks at the air filter cover panel can draw in unconditioned or undesirable air

Leaks at the air filter cover panel can draw in unconditioned or undesirable air
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Living with Permafrost

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Locate the fresh air intake away from pollution sources and in an easily accessible location

Locate the fresh air intake away from pollution sources and in an easily accessible location