The following stumper is presented in BPI's August Performance Matters e-Newsletter.

For this month's stumper, Ham Niles of Evergreen Home Performance provided this story about the home of a retired anesthesiologist and his wife in Maine.

"The couple lived in a home less than 20 years old. They had a tight house, solar hot water, under-floor heat, efficient windows, modern electric appliances for laundry, dishes and cooking, and a backup generator with a block heater and battery charger for when the power goes out, which it does frequently in this town on the coast of Maine.

The homeowners complained that there was high electrical usage that seemed out of proportion with their habits - as though they had a hot tub or AC running all the time.

We evaluated the house top-to-bottom, and found plenty of load - thirteen 90 watt can lights; several pumps for the under-floor heat; various phantom loads associated with printers, Tivos and a security system; but nothing that added up to the 12000 kWh the client was annually seeing. I recalled a story my boss told me about how to use the IR camera – and that led to directly solving the problem. What was it?"

Hint: Infrared of back-up generator (top left) and infrared of circuit breaker (top right).

Tags: BPI., Challenge, Chump, Matters, Performance, Stump, the

Views: 149

Replies to This Discussion

Its the block heater. 

I agree with Lain.  The block heater is on continuously keeping the block at a nice 121 degrees.  The circuit breaker assumably shows the active circuit to the block heater when the generator is on stand by.

RSS

Home Energy Pros

Home Energy Pros was founded by the developers of Home Energy Saver Pro (sponsored by the U.S. Department of Energy,) and brought to you in partnership with Home Energy magazine.

Latest Activity

Hannah Finch posted a blog post

Stump Duncan, Innovate with Colby, and Save on RaterFest! 2014

RaterFest! 2014 Speaker Spotlight!Presenter:  Duncan PrahlTopic: Duck, Ducks, and more Ducts…See More
29 minutes ago
David Eakin commented on Scott Mellberg's blog post Lessons from Energy Efficiency Advisors: Getting Homeowners Onboard with Home Performance
"Consultation and education are all well and good, but we have found that the…"
49 minutes ago
Kari Sauder commented on Scott Mellberg's blog post Lessons from Energy Efficiency Advisors: Getting Homeowners Onboard with Home Performance
"I just had a customer bail out of the whole house approach over the weekend.  It is a small…"
1 hour ago
Profile IconLOUIS ANDERSON and Jeremy Hargreaves joined Home Energy Pros
2 hours ago
Ramon Aguirre replied to Tom Conlon's discussion Whole House Fans - Love 'Em or Not?
"Whole house fan basically serves the purpose of exhaust fans. They are more cheaper than air…"
11 hours ago
Brandon Walton commented on Brandon Walton's photo
Thumbnail

2014-07-25 15.17.30

"While performing a QC it is always good to look inside the return.........."
19 hours ago
Brandon Walton posted a photo

2014-07-25 15.17.30

Supposed Sealed Return Chase
19 hours ago
Brandon Walton commented on Diane Chojnowski's group Facebook Pages
19 hours ago
Brandon Walton joined Diane Chojnowski's group
Thumbnail

Facebook Pages

Does your company or organization have a Facebook Page?This group is for pros who have facebook…See More
19 hours ago
Brandon Walton posted a discussion

12 Things Every Home Performance Contractor Should Have on Their Work Truck

Every home is unique and differs from the last. It would be a perfect world (from a project…See More
21 hours ago
Brandon Walton posted a blog post

12 Things Every Home Performance Contractor Should Have on Their Work Truck

Every home is unique and differs from the last. It would be a perfect world (from a project…See More
21 hours ago
Todd Collins replied to Mike Kandel's discussion Our Homes Suck – And That's Why Our Kids Have Sinus Problems
"Richard,   The study you cited states:    "Patrick N. Breysse, a public health…"
yesterday

© 2014   Created by Lawrence Berkeley National Laboratory.

Badges  |  Report an Issue  |  Terms of Service