"I agree with point # 2 for heating purposes
1 & 3 are silly"
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TJ Ewing
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- Maple City, MI
- United States
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TJ Ewing's Groups
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Building Simulations
63 members
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Best Practices (Resident…
254 members
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Energy Efficient Design
64 members
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Home Energy Ratings
92 members
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HVAC
156 members
TJ Ewing's Page
Latest Activity
dale conner replied to TJ Ewing's discussion Furnace Blower Fan on 100% of the time - Good or Bad or it depends? in the group HVAC
Kevin Wood replied to TJ Ewing's discussion Furnace Blower Fan on 100% of the time - Good or Bad or it depends? in the group HVAC"Here is another study John!
http://newscenter.lbl.gov/feature-stories/2012/10/17/elevated-indoor-carbon-dioxide-impairs-decision-making-performance/"
Kevin Wood replied to TJ Ewing's discussion Furnace Blower Fan on 100% of the time - Good or Bad or it depends? in the group HVAC"John Co2 has nothing to do with Combustion pollution control. This is the indicator of not enough fresh air into the home.
http://fire.nist.gov/bfrlpubs/build97/PDF/b97044.pdf"
John Nicholas replied to TJ Ewing's discussion Furnace Blower Fan on 100% of the time - Good or Bad or it depends? in the group HVAC"I consider that in 6. Combustion Pollution Control. It means low level CO monitoring and CO detectors for the high level immediate issues."
Kevin Wood replied to TJ Ewing's discussion Furnace Blower Fan on 100% of the time - Good or Bad or it depends? in the group HVAC"You forgot one John! 10. Co2 level for IAQ according to Environmental Sensitivity not minimal acceptance for Air Quality. This is like saying what I can do to get away with it. Reason I can say this is the acceptable level of Air required for…"
John Nicholas replied to TJ Ewing's discussion Furnace Blower Fan on 100% of the time - Good or Bad or it depends? in the group HVAC"Steps to Indoor Air Quality by Priority:
1. Test for and Mitigate Radon as found.
2. Seal the leaks for air infiltration.
3. Moisture Control
4. Pest Control
5. Seal Ducts, Pressure Balance and ASHRAE 62.2
6.…"
Kevin Wood replied to TJ Ewing's discussion Furnace Blower Fan on 100% of the time - Good or Bad or it depends? in the group HVAC"Sorry I disagree on the theory of using large amounts of electricity to run the fan. Yes when talking an older system you will use much more than a 3 or 2 stage however by not running all the time you loose in the amount of infiltration into the…"
Chris Heenan replied to TJ Ewing's discussion Furnace Blower Fan on 100% of the time - Good or Bad or it depends? in the group HVAC"The cons far outweigh the positives of removing potential temperature gradients and more filtration."
Bob Blanchette replied to TJ Ewing's discussion Furnace Blower Fan on 100% of the time - Good or Bad or it depends? in the group HVAC"I've found most blower motor failures are due to unbalanced blower wheels (bearings go bad) or overheating (windings burn up). Both caused by excess dirt in motor/blower wheel."
Bob Blanchette replied to TJ Ewing's discussion Furnace Blower Fan on 100% of the time - Good or Bad or it depends? in the group HVAC"+1
"
Bill Bradbury replied to TJ Ewing's discussion Furnace Blower Fan on 100% of the time - Good or Bad or it depends? in the group HVAC"It sounds like a mouse, I've removed dozens from the blades of furnace blowers. If you have to cut the flue to remove the fan that's a poor install. The blower assembly is actually easy to remove, take the control board off and tie it out…"
tedkidd replied to TJ Ewing's discussion Furnace Blower Fan on 100% of the time - Good or Bad or it depends? in the group HVAC"Long thread - haven't read all the replies but "It Depends" is my right answer.
Good if:
ECM Blower
Air Filtration
Fix minor comfort imbalances (hopefully equipment is sized to run near-continuous anyway...)
Bad…"
Leo Klisch replied to TJ Ewing's discussion Furnace Blower Fan on 100% of the time - Good or Bad or it depends? in the group HVAC"I have a 3 ton GeoComfort geothermal unit with a ECM fan from Enertech. I can read my electric meter accurately to see the wattage used when in the 600 cfm fan mode (1300 cfm in 1st stage heat mode) and came up with 60 watts. So it appears as if the…"
David Mileusnich replied to TJ Ewing's discussion Furnace Blower Fan on 100% of the time - Good or Bad or it depends? in the group HVAC"Correction. That was an estimate from NiCor. The actual value is 190 Therms more for the month or a net 130 increase."
David Mileusnich replied to TJ Ewing's discussion Furnace Blower Fan on 100% of the time - Good or Bad or it depends? in the group HVAC"Just received my gas bill. This is just additional information and I don't have exact day for day analysis but on the days that were very cold I just left the fan on. Otherwise, I switched it back to auto. For 11/16/-12/16,…"
Steven Lewis replied to TJ Ewing's discussion Furnace Blower Fan on 100% of the time - Good or Bad or it depends? in the group HVAC"Yes, I own a HVAC Company in central Kanas, - A slight pitch is not a problem but shouls be avoided if possible. The A/C Evap coil and Recuperative coils in the furnace may hold more water. If your furnace is lower at…"
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- Empowerment Energy Analysts
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- CEA (AEE), LEED GA, RESNET HERS Rater, Level 1 Thermographer, BPI Building Analyst, BPI Envelope Professional
- Professional Interests
- Building Science, energy conservation, efficiency, thermography, Passive House construction, measurement & verification, education.
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- http://empowermentenergy.com
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Comment Wall (2 comments)
- At 9:43am on November 21, 2010, allen p tanner said…
- TJ I took my 'block wall IR' training from unitedinfrared.com. If you want to go this route; as for Peter and tell him I said to give you the BPI courtesy discount.
Any way; the theory is that the sun needs to heat the wall, (solar loasding), sufficiently to allow the cooler cores to show the Delta T needed. Similar to flat roof scanning where we can locate moisture under a roof membrane and prior to interior ceiling damage.
You will need to take scans at different intervals and camera settings through out the day. This way you can compare images and capture the best anomalie. The color setting usuallly works best in IRON Bow or similar. You will also have to adjust the camera range at 20 degrees from high to low.
That is why interior IR doesn't work as well. The masonry wall will be more uniform through out unless there is a major moisture leak or perhaps heating duct break in the wall. I would suggest going out side and scanning some block walls at different times to get a feel for it. The sun hits different wallls at different levels so more than 1 wall cn be tested.
- At 7:05am on November 21, 2010, allen p tanner said…
- How are you progressing on your 'wall scan"?
One comment on the continuous running furnace fan; did the customer put the fan on 'run' instead of auto? Is the furnice an older moel that has a blower control thermostat in the hot air plenum that controls the fan and is defective?
It will cost energy to continuously run the blower and could cause excessive wear and tear and failure.
Home Energy Pros
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Anna Svensson posted a discussionLooking for residential building and remodeling experts
Making sure you residential building and remodeling professionals out there are aware of the call…See More
Bryce Cramer joined Leslie McDowell, BPI's group
Building Performance Institute (BPI)
BPI is the nation's premier standards development, quality assurance and credentialing organization…See More
Bryce Cramer replied to Mike Kandel's discussion June's Stump the Chump: What's Wrong with this Picture? in the group Building Performance Institute (BPI)"Key is this was done in warm weather. The back wall of the room was also uninsulated, but the lower…"
James Hatheway added a discussion to the group Job Board
Quality Assurance Verification Specialist - Little Rock, Arkansas
CLEAResult (clearesult.com) is looking for a QA Verification professional who wants to leverage…See More
tedkidd commented on Mike Rogers's blog post HOMES Act introduced with Bi-Partisan Sponsorship"% savings programs suck. Ask the folks in CA. When your incentive structure pits…"
Emilian Karchev joined Michael Stuart's group
INFRARED THERMOGRAPHY USERS
This group is dedicated to knowledge sharing and discussion of infrared thermography for building…See More
Emilian Karchev replied to Tim Marlett's discussion Removal of bad smells from mold contaminated attic"I think to have mold, then there is moisture and is good if you can look at and make a…"
Jack Sadyak commented on Jack Sadyak's blog post Why Getting a Quantum Heat Pump is a Better Choice? "Hello Tom,
Don't worry I will let you know everything you can contact me at Heat Pumps…"
Dennis Heidner commented on Macie Melendez's blog post Passive Proponent—Q&A with Brandon Weiss"Don't forget Build America program from…"
John Wes joined James Sayers's group
Marketing Energy Efficiency
Sharing ideas, tools and examples of promoting energy efficiency to consumersSee More
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