First off this is only a crude estimate of how your home compares to the average home. Also, the statistics that they use to compare average home are from 1997, however, I think they should still be relevant. You’ll need some basic information; how many gallons of fuel you used last year, the square footage of heated space in your home, and the total heating degree days (HDD) where you lived.
Our home has 3,300 square feet of heated space. We used 1,054 gallons of propane at 95,475 BTU’s/gallon (propane). According to the National Climate Data Center’s web site we had approximately 7,165 HDD’s for a year. The math is pretty simple; multiply gallons of fuel times the BTU per gallon (1,054 gal * 95,475 BTU/gal = 100,630,650 BTU) then divide this number by square footage (100,630,650 BTU / 3,300 SqFt = 30,494 BTU/SqFt) then divide that number by the total HDD’s (30,494 BTU/Sq/Ft / 7,165 HDD = 4.26 BTU’s per SqFt per HDD).
Ok…so what’s that all mean? Well according to the site, our home is in the lowest 12% of energy use per sq/ft. WOW….I knew our new home was energy efficient but I didn’t think it was that good. The more I think about it that’s kind of sad that our home is considered one of the best. Hopefully as fuel continues to rise houses will become more and more efficient and those standards will increase. Regardless of how well our home did we still use way too many BTU’s for a family of four and I’d like to find a way to cut that down significantly in the future.
Which is Better a Stick Nailer or Coil Nailer? Framers have many choices in nailers…
Estimating How Many Nails for a New Roof When it comes to estimating materials for…
Composite / PVC Decking Layout Tips and Advice Composite and PVC decking have really changed…
Benefits of ERV Systems (Energy Recovery Ventilator) If you're building a new home or doing…
Vermiculite Attic Insulation If your home was built before 1990 there is a chance it…
Arc Fault (AFCI) Circuit Breakers Tripping Often An arc-fault circuit interrupter (AFCI) or arc-fault detection…
View Comments
Todd, that is good information. I am going to make a small information sheet for my solar sales presentations because the one thing that I always emphasis is conservation. BTW, I did my own house and it came out 6.5 BTU/HDD. We still have some work to do in the basement, but the attic insulation I blew in a few years ago really helped!