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: 181

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

Discussion Forum

BPI is Hiring!

Started by Quinn Korzeniecki. Last reply by Diane Chojnowski Jun 29. 1 Reply

Earn 2 BPI CEUs by Blogging for BPI

Started by Quinn Korzeniecki Jun 19. 0 Replies

Latest Activity

Profile Iconasine and seymour schreiber joined Home Energy Pros
4 hours ago
Rodney Bailey added a discussion to the group Energy Auditing Equipment for Sale, Trade or to Purchase
Thumbnail

Energy audit equipment for sale.

We have a package of energy audit equipment that some one can use to open his or her energy…See More
17 hours ago
Rodney Bailey joined allen p tanner's group
Thumbnail

Energy Auditing Equipment for Sale, Trade or to Purchase

Discuss the pros and cons of the equipment you are interested in prior to purchase. Post equipment…See More
17 hours ago
Don Hynek replied to Brandon Walton's discussion When is it too windy to use blower door?
"You did a pretty good job -- there are a few tricks of the trade that might have improved precision…"
yesterday

Photos

Loading…
  • Add Photos
  • View All

© 2017   Created by Lawrence Berkeley National Laboratory.   Powered by

Badges  |  Report an Issue  |  Terms of Service