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: 164

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

Photos

Loading…
  • Add Photos
  • View All

Latest Activity

Profile IconBrian Coverstone, Charlie Ouellette, Karin Haerter and 1 more joined Home Energy Pros
1 hour ago
Juan added a discussion to the group Energy Auditing Equipment for Sale, Trade or to Purchase
Thumbnail

Need Energy conservatory Blower door 3 + DG-700

Hello thanks for taking the time to read this post. I am currently looking for a blower door…See More
11 hours ago
Juan 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
11 hours ago
Caoimhin P Connell replied to Rodney Fox's discussion Radon: Truth vs. Myth
"Good morning, Mr. Cullen – As I mentioned in another post – for the purposes under…"
13 hours ago
tedkidd replied to Rodney Fox's discussion Radon: Truth vs. Myth
"If putting the house under positive pressure using fresh air helps mitigate not just radon, but…"
14 hours ago
Rich Manning replied to Rodney Fox's discussion Radon: Truth vs. Myth
"Tell them the truth as you know it, and back it up with the facts!!"
14 hours ago
Rich Manning replied to Charles Ryan Weitzel's discussion Oil Fired Boiler Being Used as the Heating Source in Two Air Handlers of a Historic Home
"Yes, its a Hydro-air system. It uses one boiler to supply hot water to the coil in the supply side…"
14 hours ago
tedkidd replied to Rodney Fox's discussion Radon: Truth vs. Myth
";) I love uncovering absuedities... Funny how creatively and vehemently people will argue against…"
14 hours ago

© 2016   Created by Lawrence Berkeley National Laboratory.   Powered by

Badges  |  Report an Issue  |  Terms of Service