Rob Buchanan
  • Waterloo, IA
  • United States
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Building envelope and mechanical interactive effects

Started this discussion. Last reply by Eric Kjelshus Jun 29. 1 Reply

Good afternoon everyone,I was reviewing some of the old BPI newsletters and noticed a stump-the-chump about the interactive effects on energy savings with building envelope measures last July and…Continue

High-use headscratcher

Started this discussion. Last reply by Mick Lane Feb 5, 2016. 16 Replies

Hi all,I'm hoping someone can assist with a head scratcher I can't seem to crack. First, the facts:Mostly heating climate (zone 5)Home is 6000 sqftGSHP (unknown EER/COP)Rural home with a number of…Continue

Whole-house Ductless Mini-split install costs

Started this discussion. Last reply by Robert Bass Jun 29, 2015. 6 Replies

Something I've been working on for a few months now is trying to get a reasonable cost range for a whole-house ductless mini-split heat pump. A couple of anecdotal prices I've received range from an…Continue

'Shielding insulation'

Started this discussion. Last reply by Shawna Henderson Apr 9, 2014. 3 Replies

Good morning all,We had a question come up on "shielding insulation." The description is as follows: "The Universal Shielding Insulation is used to reduce cold air infiltration into the dwelling and…Continue

 

Rob Buchanan's Page

Latest Activity

Eric Kjelshus replied to Rob Buchanan's discussion Building envelope and mechanical interactive effects
"Yes I see this with return in attic or boiler way out of tune or AC compressor valves out or gas leaks or low on charge in AC units.   But you want a paper on this or formal paper?   I just put it in the load I run - each job changes each…"
Jun 29
Rob Buchanan posted a discussion

Building envelope and mechanical interactive effects

Good afternoon everyone,I was reviewing some of the old BPI newsletters and noticed a stump-the-chump about the interactive effects on energy savings with building envelope measures last July and August.The cliff notes version: a home had a mess of building envelope measures installed. Customer saw no energy savings. Customer subsequently had mechanicals replaced (furnace/WH) and usage dropped 60%.I am hoping someone in this community is aware of any white papers or similar, formal publications…See More
Jun 22
Mick Lane replied to Rob Buchanan's discussion High-use headscratcher
"The geothermal heat pump is the most likely culprit.  The heat pump doesn't make heat it only moves it.  If the water temperature of the loop drops below the design they can be less efficient than electric resistance heat.  3200…"
Feb 5, 2016
Rob Buchanan's discussion was featured

High-use headscratcher

Hi all,I'm hoping someone can assist with a head scratcher I can't seem to crack. First, the facts:Mostly heating climate (zone 5)Home is 6000 sqftGSHP (unknown EER/COP)Rural home with a number of outbuildings for livestock and crops. The property is a legacy farm, but there is no active farming managed by the customers, aside from some 4H hogs. There is a separate meter for farm operations. There are six residents.The only "atypical" things in the home are a hot tub, which is heated, a pool…See More
Feb 2, 2016
Eric Kjelshus replied to Rob Buchanan's discussion High-use headscratcher
"Most calls I go on are like this - this is a very common.   No one tests out just "geter done"  - how little can be done till will not get paid.  "
Jan 25, 2016
Walter Ahlgrim replied to Rob Buchanan's discussion High-use headscratcher
"No really a head scratcher the home owner was well aware of the real problem. I recommend you find a ground source expert. Try a post on this form under Maintenance and Troubleshooting. Your post should have the following info 1 Location state and…"
Jan 25, 2016
Eric Kjelshus replied to Rob Buchanan's discussion High-use headscratcher
"sound like STRIP heat is on that's a 1-1 rate  the GSHP can be 5-1  most are 4-1.   Today I was at a new install with W1 was strip heat  and W2 was 1st stage HP and W3 was 2nd stage HP.   Mis wired HP is very very…"
Jan 24, 2016
Rodney Fox replied to Rob Buchanan's discussion High-use headscratcher
"I would have bet a good amount of money it was the GSHP, as I've often seen they don't perform as advertised. Can you provide the make/model of the pumps so we can do a little research? Those things and their control systems can be a…"
Jan 22, 2016
Rob Buchanan replied to Rob Buchanan's discussion High-use headscratcher
"OK so we did the site visit yesterday, and this is the information relayed to me: There are two GSHPs. One of them is not working and off. The other is off and running on aux heat, because the GSHP is not operating correctly. The customer advised…"
Jan 22, 2016
Eric Kjelshus replied to Rob Buchanan's discussion High-use headscratcher
"I found a strip heater used in new work all hard wired up set at 55' in the attic on ply wood - when the attic got below 55' the 26 amp heater would turn on.   This made ice dams and the roof got replaced 6 times in 5 years.  …"
Jan 21, 2016
Paul Scheckel replied to Rob Buchanan's discussion High-use headscratcher
"I've seen similar situations and it always comes down to either: 1 - a pump or motor that is stuck on for some reason (leak, faulty control), or needs to be on for some reason (GSHP, duck pond bubbler, recirc, HRV in the pool house) 2 -…"
Jan 21, 2016
Rodney Fox replied to Rob Buchanan's discussion High-use headscratcher
"Excellent suggestions provided by everyone here. @Brad Cook had the most useful info to offer, matching my methodology: "To give some perspective, at 11,568 KwH per month, that would be 16.07 KwH per HOUR, or 67 AMPS at 240 VAC (134 amps at 120…"
Jan 21, 2016
Walter Money replied to Rob Buchanan's discussion High-use headscratcher
"Mr. Buchanan, I also had a client with similar issues, though the rural home was not a working farm.The electric usage for the "polar vortex" month two years ago was 17,196 kwh. For the month. I found the heat load for the house greater…"
Jan 21, 2016
Dale Sherman replied to Rob Buchanan's discussion High-use headscratcher
"Good suggestions from everyone here.  Chances are good that you could point your infrared camera at the main panel and tell which circuits are warm and drawing a large amount of current. I have found a waterlogged expansion tank for the well…"
Jan 15, 2016
Brad Cook replied to Rob Buchanan's discussion High-use headscratcher
"To give some perspective, at 11,568 KwH per month, that would be 16.07 KwH per HOUR, or 67 AMPS at 240 VAC (134 amps at 120 VAC) running 24/7. Yes, that is HUGE for the situation described. Put an amp meter on those circuit breakers. A 1 HP…"
Jan 14, 2016
Rob Buchanan replied to Rob Buchanan's discussion High-use headscratcher
"I'll have people visiting the property next week, and the characteristics I've outlined above are based on conversations I've had with the occupants. The utility bills that come with that much usage are high, and prohibitively so for…"
Jan 14, 2016

Profile Information

Company
Alliant Energy
Professional Certification
BPI Building Analyst, BPI Envelope Specialist
Professional Interests
Retrofits and pressure barrier assessment and improvement, building performance auditing

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At 9:01am on December 29, 2011, Diane Chojnowski said…

Hi Rob,

Welcome to Home Energy Pros! Feel free to join the conversation in the Forum and Groups. And share your energy efficiency photos, videos and upcoming events. If you're blogging about home performance, this is the place for you!

Don't forget to upload your profile photo. And add your location on our Member Map!


Thanks!
Diane, HEP Moderator

 
 
 

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