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Green Building Illustrated

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Semi-conditioned closed attic system featuring open cell spray foam insulation (High Performance Green). By removing ventilation from the attic space and locating open cell airtight foam insulation under the roof deck, the attic approximates the temperature of the home. This requires your air conditioning system to work less since all the ducts are located in a conditioned space. You benefit from up to 50% in energy savings and increased comfort. It is even cool enough to prevent chocolate from melting on the hottest days!
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Open cell spray foam insulation (High Performance Green) or blown cellulose insulation (High Performance +) provides an air tight thermal barrier around the walls and roof deck.
spray foam insulation
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Energy-efficient windows incorporating vinyl frames and Low-E (emissivity) double pane glass reduce solar heat gain. This in turn increases comfort and energy savings plus limits damaging UV sunlight that can fade carpets, draperies and furniture. Our attention to detail is evident in our method of installing windows using silicone caulk, moistop and adhesive flashing tape to provide water intrusion protection and reduced air infiltration. Download a free report.
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15 S.E.E.R. (Seasonal Energy Efficiency Ratio) Trane air conditioning condenser with R-410A, a non-ozone depleting refrigerant, and gas furnace or heat pump (if natural gas not available in neighborhood) provides 20% increased efficiency and energy savings when compared to a 13 S.E.E.R. system which is the minimum allowed by current building codes. Bigger is not always better. A Manual J design load calculation takes into account factors such as, window size and orientation, insulation, duct leakage, and size of the home to determine the heat gain during warm weather and heat loss during cold weather. This information is used by Imagine Homes to properly size the system. A "right sized" system benefits you with improved comfort, better humidity control, increased energy-efficiency and a longer life for the system. Find out more. 15 SEER Condenser
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Have you been in a home where the doors close by themselves when the air conditioner runs? The typical home will have 1 or 2 centrally located return air vents (Figure 1). The system is in balance until the bedroom doors are closed (Figure 2). The central return draws air from the body of the house creating a negative pressure zone (red area) since the only path for air out of the bedrooms is under the door. This also restricts air flow into the bedrooms (blue area) that can cause comfort problems and increases the potential for the negative pressure areas to pull outside air containing moisture, pollens, pesticides or other pollutants into the home or backdraft carbon monoxide from gas appliance flues, fireplace or garage. Imagine Homes places return air vents or transfer grills in each bedroom to provide additional paths for air flow and installs a fresh air vent to provide filtered fresh air to the home (Figure 3). The home is under a small positive pressure to keep hot, humid air from being pulled into the home.
Green HVAC System
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The air conditioning duct system installed in each Imagine Home is located inside the building envelope with all connections sealed by mastic. Hot attics leave duct connections susceptible to leakage and duct tape does not provide a sufficient seal. Leakage from ducts results in increased energy use, reduced comfort, and increased potential for moisture and indoor air quality issues. To verify minimal leakage, our system is duct blaster tested by a 3rd party energy rater and our homes achieve a maximum 3.5% leakage. Compare this to older homes that may have up to 30% or more duct leakage. Duct blaster tested
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Programmable thermostats save money on utility costs by allowing a schedule of times and temperatures to be set for weekdays and weekends. This allows you to return to a comfortable home at the end of the day without spending money to operate your air conditioning system while you are away. Programmable Thermostat
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A tankless gas water heater (High Performance Green) provides continuous hot water and energy savings by not working to maintain a tank of hot water at all times.  Water Heater
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Blower door tests are performed on each Imagine Home to ensure a tight home with less than 3 ACH (air changes per hour). For comparison, Energy Star requires no more than 6 ACH and code requires no more than 7. A low rating means less air leakage and less outside air carrying pollutants, pollens, and dust into the home — also more comfort and less energy use. Blower Door
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The recycled content used to make Shaw carpeting provides exceptional performance, and built-in stain and crush resistance while diverting carpeting that would otherwise end up in the landfill. One step closer to a "cradle to cradle" solution. Additionally, each of the carpet options available for your home carries the Carpet and Rug Institute (CRI) Green Label setting higher standards for indoor air quality.  Carpet
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Carbon monoxide detector installed in each home.
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Fiber-cement siding and soffit materials resist termites, will not rot or deteriorate, and provides long-term durability and strength.
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Acme Brick provides durable, low-maintenance, long life exterior.
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Delta plumbing fixture with 1.5 gpm aerators conserve water.
Delta Faucet
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Imagine Homes installs individual MERV 8 (High Performance +) or a MERV 10 (High Performance Green) whole home pleated air conditioning system filter in each home. MERV (minimum efficiency reporting value) rates filter efficiency from lowest (0) to highest (16). Most homes are outfitted with basic HVAC filtration — standard one-inch filters (MERV 0 – 1) that meet minimum filtration standards and require frequent replacement. Think of a furnace filter as a net that captures particles that flow through it in the airstream. The bigger and better the net, the more and smaller particles that can be captured. You are sure to notice a difference in the quality of air in your home, because these higher efficiency filters are up to 40% more efficient in capturing airborne pollutants and particles from the air passing through the duct system. MERV 10 Air Conditioning Filter
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Have you ever had to flee your house for a few days because it was being painted? Sherwin-Williams low-VOC paint is low odor and contains less volatile organic compounds (VOCs). Paints and finishes off-gas VOCs, which can diminish the quality of indoor air and be detrimental to your health. Today, manufacturers of products containing VOCs are using alternative manufacturing techniques that dramatically reduce or eliminate the use of these harmful compounds.
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Factory-built components and materials, such as pre-hung door units with finger-joint pine jambs or finger-joint studs, allow more efficient use of raw materials by making the most out of every piece of wood, plus incorporating recycled materials and reducing waste. Factory-Built Components
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Energy Star rated appliances save an average of 30% over standard models. Energy Star Rated Appliances
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EPA Water Sense certified dual flush toilets provide a remarkable 0.8 and 1.6 gallon per flush 2 button system capable of saving water without sacrificing performance. Dual Flush Toilets
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Energy Star qualified bulbs use about 75 percent less energy than standard incandescent bulbs, last up to 10 times longer and save about $30 or more in electricity costs over each bulb's lifetime. In addition, they produce about 75 percent less heat, so they're safer to operate and can cut energy costs associated with home cooling. Energy Star Qualified Bulbs
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Jobsite Waste Recycling. Approximately two-thirds of the waste that would normally end up in the landfill is mulched with a portable grinder for use on the jobsite.

  • Lumber is used for erosion control
  • Sheetrock (gypsum) is added nutrient to topsoil which can help establish lawns
  • Brick & shingles are used for base under concrete walks
  • Cardboard is gathered and sent to recycler
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Drought tolerant landscaping does not mean rocks and cactus. Bermuda sod (Zoysia in Cibolo Canyons) and low-water plants approved by SAWS for landscapes in the San Antonio area are installed in each home. The complete list can be found at www.saws.org/conservation.
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Imagine Homes' national award winning high performance green homes system leads to the natural next step of incorporating renewable solar energy into your home. Our team can assist you in selecting the right photovoltaic (electricity) and thermal (water heating) solar systems to meet your needs and your budget. Incredible rebates and tax credits may be available to make your investment even smarter.
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InSinkErator food waste disposers provide a convenient and environmentally friendly alternative to transporting leftovers to landfills.
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DOW 1/2", R-3 foam sheathing at all exterior walls provides continuous insulation that covers the entire wall including the wood framing. This reduces energy loss through the walls and provides more consistent temperatures.
San Antonio Green Home Insinkerator  Native, Drought-Tolerant Landscaping  Jobsite Waste Recycling Air Conditioning Duct System Semi-conditioned, closed attic system Return Air Vents Open cell spray foam insulation  Tankless Water Heater Blower Door Tests Energy Efficient Windows Programmable Thermostats 15 S.E.E.R. Trane Air Conditioning Shaw Anso Carpeting Carbon Monoxide Detector Acme Brick Fiber Cement Siding MERV 10 Pleated A/C Filter Delta Plumbing Fixture Low-VOC Paint Factory-Built Components Energy Star Rated Appliances Dual Flush Toilets Energy Star Qualified Bulbs Foam Sheathing