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Saving energy is nothing new. Although there has been a revival in the focus of energy conservation, US Inspect has discovered some facts over the years that are helpful to all homeowners, homebuyers and agents alike. Generally speaking this refers to the reduction of energy through simple measures like more efficient lighting, using solar panels, better sealing windows and doors and more. 

Facts

People today are more conscious than ever about the costs of energy, which have risen dramatically since the 70's. The prospect of continuing increases in energy costs has made many homeowners and prospective buyers take a very critical look at energy costs. Haphazard, hit-and-miss tactics for conserving energy are not effective in significantly reducing energy costs. While some savings may be realized, many things that can provide great savings are overlooked altogether.

Any energy-related project should be justified by comfort and economic benefit. If the amount of money spent will be returned to you in approximately 7 years or less, that is an improvement that should be considered. If it will take much longer, it is probably not economically beneficial. For example, if an attic does not have any insulation and you know that you can save 60% to 70% of the losses through the attic/ceiling by installing 9 inches to 12 inches of insulation, you should evaluate the cost versus payback.

In a house with a standard fossil fuel heater, assuming a fuel cost of $1000 to heat the house for one year, the losses through the ceiling (assuming there is no insulation) would be approximately $250 to $300. Having a professional install new insulation costing $1.50 per square foot (SF) to insulate a 1000 SF attic, would run roughly $1,500. This will be about a 5 to 6 year payback. If the homeowner himself sufficiently insulates the attic, spending, say $300 for the insulation, this would yield a payback in roughly 2 years.

Insulating the walls is much different. If it costs $2.00 per SF to insulate the walls, plus possibly some cosmetic repairs, and the house has 3,500 SF of wall area, the cost would be approximately $7,000. If the savings are annually only $250 to $300, the payback will be over 20 years. This would not be beneficial.

A simplified breakdown of where our $1000.00 fuel cost goes is as follows:

  • Approximately 1/3 goes up the chimney carrying moisture, unburned gases, and hydrocarbons.
  • Approximately 1/3 goes straight up through the house (without insulation).
  • Approximately 1/3 goes through the walls (without insulation).
  • Approximately 1/3 is lost to normal entry and exit, and the windows and doors.
  • There are other considerations, such as air infiltration, relative humidity, and occupants of the property. One adult adds approximately 50 BTUs per hour to the living space.
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Methods

  • Install storm windows and doors and/or upgrade existing units.
  • Install thermal drapes.
  • Increase attic ventilation. Low-high is the most effective.
  • Install attic fan with thermostatic and humidistatic controls and/or upgrade existing unit.
  • Install band joist insulation.
  • Install insulation on the boiler lines.
  • Install insulation on the water lines.
  • Install insulation on the water heater. (check manufacturer's warranty)
  • Evaluate weatherstripping; determine the need for more or upgrade the existing weatherstripping.
  • Evaluate basement insulation and need for upgrading.
  • Evaluate the existing levels of attic insulation and/or need for upgrading.
  • Evaluate the existing crawl space insulation and the need for upgrading.
  • Evaluate temperature of the water from the water heater.(120F-140F)
  • Evaluate installing a timer on the water heater.
  • Evaluate installing a "setback" or "programmable" thermostat.
  • Evaluate the need for the installation of a humidifier.
  • Evaluate the need for the installation of a dehumidifier.
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Common Defects

  • Inadequate insulation at attic and exterior walls
  • Vapor barrier facing the cold direction
  • Water supply (hot) lines not insulated
  • Missing band-joist insulation at perimeter
  • Window and door openings not properly sealed
  • Duct work not insulated, disconnected, or joints not sealed
  • Water heater not insulated (check manufacturer's warranty)
  • Water heater temperature above 135 degrees F
  • Lacking storm windows; single pane windows
  • Inadequate or improper crawl space ventilation
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