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Pool pumps perform many functions in a swimming pool including circulating water through the filtration system and heater, backwashing the filter, operating a chlorinator, providing water for the pool sweeper, etc.

Pool pumps perform many functions in a swimming pool including circulating water through the filtration system and heater, backwashing the filter, operating a chlorinator, providing water for the pool sweeper, etc.
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Right - An unvented attic with no soffit vents, borate-treated fascia board, metal drip edge, and concrete block construction on this south Florida home help make it resistant to hurricanes, pests, and wind-born wildfire embers.

Right - An unvented attic with no soffit vents, borate-treated fascia board, metal drip edge, and concrete block construction on this south Florida home help make it resistant to hurricanes, pests, and wind-born wildfire embers.
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Right - Spray foam covers the walls and a sealed vapor retarder lines the floor of this unvented crawl space.

Right - Spray foam covers the walls and a sealed vapor retarder lines the floor of this unvented crawl space.
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Right - Spray foam insulates and air-seals the stone walls of this unvented crawlspace.

Right - Spray foam insulates and air-seals the stone walls of this unvented crawlspace.
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Right - This unvented crawlspace is insulated along interior walls with rigid foam and air-sealed by covering the floor with vapor retarder that is sealed to the rigid foam which is taped at the seams.

Right - This unvented crawlspace is insulated along interior walls with rigid foam and air-sealed by covering the floor with vapor retarder that is sealed to the rigid foam which is taped at the seams.
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Right - This unvented crawlspace is insulated along the walls and between the floor joists with 2-inch foil-faced polyisocyanurate; a termite inspection gap is visible above of the wall insulation and below the band joist.

Right - This unvented crawlspace is insulated along the walls and between the floor joists with 2-inch foil-faced polyisocyanurate; a termite inspection gap is visible above of the wall insulation and below the band joist.
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Right – Spray foam insulates the unvented attic.

Right – Spray foam insulates the unvented attic.
Case Study:

Technology Solutions Case Study: Combustion Safety for Appliances Using Indoor Air

Case Study:

Technology Solutions Case Study: Field Testing an Unvented Roof with Asphalt Shingles in a Cold Climate

Case Study:

Technology Solutions Case Study: Field Testing an Unvented Roof with Fibrous Insulation and Tiles

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This room has several passive and low-energy cooling features including a ceiling fan, fully operable French doors, window shading, an outdoor water feature, and light-colored hard-scaping.

This room has several passive and low-energy cooling features including a ceiling fan, fully operable French doors, window shading, an outdoor water feature, and light-colored hard-scaping.
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This solar powered attic fan runs when the sun is shining and does not draw any power from the home’s electrical system

This solar powered attic fan runs when the sun is shining and does not draw any power from the home’s electrical system
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Unvented concrete masonry unit crawl space with exterior insulation - designed for termite resistance in moderately infested areas

Unvented concrete masonry unit crawl space with exterior insulation - designed for termite resistance in moderately infested areas
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Unvented crawl space with interior insulation - designed for termite resistance in heavily infested areas

Unvented crawl space with interior insulation - designed for termite resistance in heavily infested areas
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Unvented roof assembly at eave retrofitted with rigid foam, spray foam, and a fully adhered membrane seal at the top of wall-to-roof transition

Unvented roof assembly at eave retrofitted with rigid foam, spray foam, and a fully adhered membrane seal at the top of wall-to-roof transition
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Unvented roof assembly at eave retrofitted with rigid foam, spray foam, and taped top edge of existing house wrap or building paper

Unvented roof assembly at eave retrofitted with rigid foam, spray foam, and taped top edge of existing house wrap or building paper
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Unvented roof assembly at rake retrofitted with a filler piece and taped top edge of existing house wrap or building paper to seal the top of wall-to-roof transition

Unvented roof assembly at rake retrofitted with a filler piece and taped top edge of existing house wrap or building paper to seal the top of wall-to-roof transition
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Unvented roof assembly at rake retrofitted with spray foam installed along the underside of the roof deck and extended to the rake edge to insulate and air seal the attic

Unvented roof assembly at rake retrofitted with spray foam installed along the underside of the roof deck and extended to the rake edge to insulate and air seal the attic
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Variable-speed pool pumps can cut energy use by 50% to 90% compared to standard single-speed pumps

Variable-speed pool pumps can cut energy use by 50% to 90% compared to standard single-speed pumps
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Variable-speed pump with low head loss filter and piping layout

Variable-speed pump with low head loss filter and piping layout
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Vented Attic vs Unvented Cathedral Attic Air Flow

Vented Attic vs Unvented Cathedral Attic Air Flow
Video:

Why Close a Crawlspace?