Tuesday, December 27, 2011
Tuesday, October 18, 2011
On 11.11.11 come see our "River Escape" project a truly affordable home that was built to be 88% more energy efficient than and standard new code built home. This home is a Zero-Energy home that is projected to be a LEED for Homes “Platinum” project. The home is also a finalist for Green Builder Magazines "2011 Home of the Years". And is ZeroStep “Silver” Certified (Lifetime Design or Barrier Free) from Disability Advocates of Kent County Michigan.
Key Sustainable/Green Features
- Rain Permeable Gravel Driveway.
- Lifetime Design (Barrier Free)
- Zero step entries.
- Energy Star North Star Triple Pane Windows.
- Energy Star LED & CFL lighting.
- Energy Star Ceiling Fans.
- Energy Star Appliances by Frigidaire.
- SIP Panel Roof
- Frost Protected Shallow Foundation (with R-20 Dow Insulation beneath it.)
- BuildBlock ICF Construction (with 40% Fly-Ash)
- Advanced Framing (Studs @ 24” o.c.)
- James Hardie FiberCement siding (with recycled content)
- MiraTec Trim (formaldehyde free, SCS Certified)
- Central Vacuum System (Greatly reduces in-door air pollutants)
- Concrete Floors through-out main floor. (Colored in the concrete mix)
- FSC certified Bamboo Flooring on second story.
- FSC certified stud interior walls.
- No-VOC Paints and primers.
- Low-VOC caulks and sealants.
- Amish Built Kitchen Cabinets from wood within 5 miles from the project site.
- Dual-Flush toilet by American Standard.
- Low flow shower heads and faucets.
- Pex Plumbing.
- Radon Venting.
- Radiant Heat Through-out Home.
- Life breath HRV (heat recovery ventilator)
- Passive Solar Design.
- Solar Hot Water. (30% Tax Rebate)
- 4.1kW of Photovoltaic (30% Tax Rebate)
- Pellet Stove (Back up Heat System)
- Pre-wired for a future Wind Generator.
- Pre-wired for future battery backup.
Please RSVP with us at 616.957.LEED (5333) or at firstname.lastname@example.org
Tuesday, May 17, 2011
- Area of conditioned space 2904
- Btu/ sf/ hdd .51
- Peak heat loss design 11.6 kbtu/h
- Shell area: 5677
- ACH 50 4.23
- Total cfm of blower door 400cfm
- Date of blower door test 4/8/11
- Test performed by Arn McIntyre
- Electrical kwh per year 28.6mmbtu/yr
- Fossil btu per year 20.2mmbtu/yr
- Renewable Elec produced per year 33.5mmbtu/yr
- HERS index -1
Friday, May 13, 2011
What is a HERS, or Home Energy Rating System score? Well it is basically a rating of how energy efficient a home is based on a number of things, including a blower door test, the HVAC system, energy usage, and so on. The HERS rating is what is used to qualify a home for the Energy Star Rating. The rating is based off of a standard new home built to code that was rated originally tested and used as the test case with the score of 100. A typical older home has a HERS index of 125-150. Most homes that qualify for Energy Star homes must have a HERS rating of 85. That means that those homes are 15% more energy efficient than the test house. This is really good and a step in the right direction. Most of our homes have been scoring in the 50's, which is where we would expect the to fall. That HERS score would qualifies our homes as 5 star+ in the Energy Star rating system. The "River Escape Project" came in at 12 (lower the better) making it 88% more efficient than a new home built to code.
- Certified: Up to 30%.
- Silver: Approximately 30%.
- Gold: Approximately 48%.
- Platinum: 50-60%.
As many know, I am a firm believer in Kaizen ( A Japanese philosophy), or continuous improvement. I am continually studying the building science of homes to make improvements to them so they are as energy efficient as possible within their budgets. So even though a HERS rating of 12 is the best we have achieved so far our goal are to continually improve upon that score with the ultimate goal of a HERS score of 0 or a negative score.