Eric Kjelshus
  • Greenwood, MO
  • United States
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Eric Kjelshus's Discussions

What made this chimney fall down?

Started this discussion. Last reply by Eric Kjelshus Nov 13, 2017. 7 Replies

what made this chimney fall down?  2 years after a 80% furnace was put in.  Over sized heating system after building sealedContinue

Tags: tile, liner, a, with, stone

Low Gas Pressure

Started this discussion. Last reply by Tom DelConte Jan 15, 2014. 8 Replies

I have been running no heat calls all day - today I have found  lots of very low gas pressure you can run the Nat Gas hot water heater or 95% furnace.   Most days I find 5" to 5.5" and higher water…Continue


Eric Kjelshus's Page

Latest Activity

Eric Kjelshus replied to Julie Saporito's discussion Heat pump failure during high heat days?
"I find most heat pumps need cleaning 2- 3-4 times a year.  When dirty coil do not transfer heat well.  High heat kills compressors and motors.  With lack of air flow or water vapor in HVAC system just rotts.  I have air and water…"
Oct 13
Eric Kjelshus replied to Haley Keegan's discussion Baffles without soffit vents?
"Unless the soffit is caulked or foamed sealed there's lots of holes.   Some time put smoke/fog/light in an attic  and see the holes.   I was watching fiber glass breath the smoke with air flow.   "
Sep 9
Eric Kjelshus replied to Dan Wise's discussion Convert BTU/hr in a Manual J to actual fuel usages
"I do a heat loss/gain each "bid"  some times 3 ways.   I like to use fuel usage with a good program. If not use are going to be off.    find a person who is big big and middle age they will take more AC and less…"
Jul 21
Eric Kjelshus replied to Jacob Corvidae's discussion The problems with gas stoves
"If you use a stove in a well sealed building you will need make up air to keep building positive and hood to take out bad air.   Small hoods are just 300 CFM and under or about 50-100 CFM per Square foot -you can get by with opening a door…"
Jul 7
Eric Kjelshus replied to Rob Madden's discussion Where is the money in energy auditing / home rating?
"Most realtor/loan closer look at just there close rate and not best for bill payer.  Monday I was working with Jullia who has been looking at houses for 3 mo.   She found a "good value" older home that was flashed - just…"
Jun 13
Eric Kjelshus replied to Rob Madden's discussion Where is the money in energy auditing / home rating?
"Hay Bruce -  I feed off some of your leads.  I make a living doing HVAC/ building science/ CO / IAQ   -  I am looking for true friendlys to increase my business.  80-95% of realtor/loan closer will  kill energy…"
Jun 13
Eric Kjelshus replied to Daniel Baur-McGuire's discussion How to Insulate Exposed Outdoor Ductwork?? Help
"You have to think about the skills of worker.  cost of the Job.  There is maybe 8000 ways to seal and add "R" to duct work. "
May 14
Eric Kjelshus replied to Daniel Baur-McGuire's discussion How to Insulate Exposed Outdoor Ductwork?? Help
"I have done this a lot.   I use sheet foam and wrap with PTO - PVC Just like a roof"
May 13
Eric Kjelshus replied to Luis Hernandez's discussion Water heater ventilation question
"35 yr ago We used CPVC for the 1st poly fitting on all 3 maker of 90%.   Must look at flue gas meter if not just wasting your time.    Be a pro and use a flue gas meter  as low as $550 tells CO, temp, o2.  In late 80 we…"
Apr 30
Eric Kjelshus replied to Luis Hernandez's discussion Water heater ventilation question
"Use your flue gas meter - is it in speck?   Of getting to hot some thing is wrong, did you or some one check LP gas presser?   Both running and other things burning gas presser?   "
Apr 22

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Kjelshus Energy
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Eric Kjelshus energy

Eric Kjelshus's Blog

Who among us tracks the accuracy of Manual J?

Posted on February 27, 2016 at 11:06pm 4 Comments

Who among us tracks the accuracy of Manual J?

I have hour meters on maybe 20 systems now.    I like to see the run time when it's "4" degrees in Kansas City.  99% rate in KC is +4' degrees.  My goal at 4' is 100% run time.   I have a super sealed home 2,100 square feet  with a 2 ton ground type heat pump R-30 walls, R-60 attic, R-8 windows & doors with 98% run time @ "+ 4' ".  When the strip heat turned on, it smelled up the home with the dirt  off the 5 KW strip, heat…


not a Video - not a true photo

Posted on August 6, 2015 at 9:16pm 2 Comments

This is using still and moving camera,   Then gets stitched with software.     Tell me what you think?   On the photo that move you slow it or speed it up or go all the way around.   
Google give big points with using it.   Some say more than video.  

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At 10:46am on October 23, 2016, Robert Zockoff said…


My client has 2 very different ManJ reports from 2 HVAC distributors. What would you charge for a full design with including ducts? It will be about 8 zones with air source heat pump and 50% radiant.



At 9:02am on December 16, 2012, Diane Chojnowski said…

Hi Eric,

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!

Diane, HEP Moderator


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