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ImprovingEnergy Efficiency
in your Historic Home
“Efficient energy use, sometimes simply called energy efficiency, is the goal of efforts to reduce the amount of
energy required to provide products and services.”
“Making homes, vehicles, and businesses more energy efficient is
seen as a largely untapped solution to addressing the problems of pollution, global warming, energy security, and
fossil fuel depletion.”
Why Improve Energy Efficiency?
In our homes we want to:
Improve comfort Reduce fossil fuel/ non-renewable energy use
Save money
The goal is to reduce energy use and improve comfort without diminishing the integrity of
your historic home.
And don't spend more than you would save.
“... when comparing buildings of equivalent size and function, building reuse almost
always offers environmental savings over demolition and new construction.”
Understanding Your Historic Home
“Early homes had many energy conserving features out of necessity because of the inefficiency of heating with fireplaces and the lack of artificial cooling. Interest in these features lessened as technical advances produced a greater ability to control interior temperatures while at the same time reducing the amount of homeowner labor. Ultimately, large mechanical systems were used to completely control the interior environment, thus eliminating the need for energy saving features.”
- John Burns, Energy Conserving Features Inherent in Older Homes
Understanding Your Historic Home
Designed to make the most of the natural environment
Florida homes designed for Florida climate High ceilings Wide eaves Porches Raised foundations Lots of large, operable windows with screens
Natural Light Cross ventilation
Air conditioning was not anticipated
Approaches to Improving Energy Efficiency
1.Reduce reliance on energy sources/ improve performance of existing systems
2.Upgrade to more efficient systems
3.Replace existing energy sources with renewable energy sources
Simple Ways to Reduce Reliance
on Energy Sources Adapt your attitude about comfort
Accept a wider range of temperatures Take an active role in regulating climate
Open windows rather than turning on AC
Use blinds/ curtains to reduce heat gain Use ceiling fans before resorting to AC
BECOME PART OF THE CLIMATE CONTROL SYSTEM
Simple Ways to Reduce Reliance
on Energy SourcesReduce Heat Gain Use blinds and heavy curtains UV blocking films Awnings/ shutters Plant trees Add a porch
Simple Ways to Reduce Reliance
on Energy Sources Seal wall openings
Plumbing, AC, wire penetrations, dryer vent, outlets, fireplace
Weatherstripping Install a solar-powered attic
fan Replace lights bulbs with
more energy efficient bulbs Insulate your hot water heater Air dry clothes
Upgrades that will Improve Energy Efficiency
Upgrade appliances Water heater
Solar Tankless/on demand Set on a timer
Kitchen Appliances Energy Star ratings
Water saving fixtures
Upgrades to Reduce Reliance on Energy Sources
Insulation Attic
Radiant barrier Floor Walls
“One of the top reasons for exterior paint failure, termites and structural damage to old houses is loose cellulose or fiberglass insulation blown into the sidewalls”
Upgrades to Reduce Reliance on Energy Sources
Roofing Light Roof Colors
Cool Roof Colors Metal roof 20% reduction in energy costs
No skylights – use dormers when more light is desired
Upgrades to Reduce Reliance on Energy Sources
Windows Windows contribute only 10-12% of overall
infiltration to the building envelope. Much more infiltration occurs at roof eaves, foundations and even through wall receptacles, dryer and plumbing vents and fireplaces.
Double-pane windows do not work well at reducing heat gain
Upgrades to Reduce Reliance on Energy Sources
Generally a 20 year max. life for replacement windows
It takes 40+ years to recoup the cost of the replacement windows through energy savings
Studies have demonstrated that a historic wood window, properly maintained, weather-stripped and with a storm window, can be just as energy efficient as a new window
Replacement Windows – Rarely worth the investment
Upgrades to Reduce Reliance on Energy Sources
Windows Keep windows in good repair Close latches so they meet
properly Weatherstripping UV films
Upgrades to Reduce Reliance on Energy Sources
Air Conditioning Min. SEER Rating 13
If unit is more than 12 years old, replacing it with more efficient model could cut your cooling costs by 30%
Size properly – bigger is not better Ducts in conditioned space if possible Air handler should not be in attic
Upgrades to Reduce Reliance on Energy Sources
Air Conditioning Seal duct leaks or replace ducts (insulated) Get a programmable thermostat Change filters monthly Small duct high velocity systems
Replacement Energy SourcesSolar Place panels on non-primary facades Place panels on outbuildings Solar producing shinglesWind Turbines Aesthetics/ Size Removable Noise
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