What are some of the best energy myths you have ever heard? I think this could be good for a couple of laughs. I will start:
  • Incandescent light bulbs give off more heat than light and because of this they help heat my house in the winter. I don't want to switch to CFLs or LEDs because my heating bills will increase.
  • My system is running pretty cost effectively right now because 2 of my 3 HVAC units broke down, so I am only using 1 for the whole building. That's like cutting my costs by 2/3.
What are some good ones you have heard?

Tags: myths

Views: 1766

Reply to This

Replies to This Discussion

I also agree because of its ability to float in the air much more easily than other Insulations of today. Because it is a fiber or rod shaped it is hard for the microphage to absorb around it. This is very similar to the problem with asbestos.

Enjoy reading if you want more info.

http://toxnet.nlm.nih.gov/cgi-bin/sis/search/a?dbs+hsdb:@term+@DOCN...

The most common one we hear is HVAC contractors telling customers to turn their heat pumps to "Aux" or "Electric Resistance" if the autside temperature is less than 25 F.  They tell them it is bad for the heat pump to run at low temperatures and the heat pump can't keep up at those temperatures. 

We respond by telling customers that while the heat pump will run longer, a properly installed heat pump system is designed to run at cold temperatures and the supplemental heat will come on automatically to provide any additional heat that the home needs.  We see a 40% increase in heating energy usage from homes that turn off their heat pump and run only on electric resistance. 

Thanks James!  It's really helpful to have others give examples where "stupid human thermostat tricks" hurt people.  Heat pumps are a great example.  Not much horsepower, but if you leave them on the highway they're really efficient. 

Why do these bad, dogmatic recommendations persist?  

People love the idea that controlling the thermostat gives them Godlike control over energy consumption.  Since almost nobody tracks, a good part is not knowing, just having faith it must be saving.  

Sounds pretty silly, eh?  "I must be saving lots" as a basis for financial and operational decision making?  Imagine showing up at the bank with your savings, your deposit ticket total reading "lots".  The teller would look at you like you are nuts, yet that's the answer I get when I ask people what they are saving.  Nobody knows.  

Besides not knowing, some is not caring.  And some is "I don't want these people complaining anymore, they want heat not efficiency.  And anyway, its NMEB, and their calls are eating into my profits." 

In any case, if it IS our job to help people improve efficiency and save energy, we must do the diagnostics FIRST.  

First rule of OUR fight club?  "Do no harm".  We must avoid blanket recommendations that are known to hurt people.  You want to make a recommendation, know that it fits the situation.  And make sure people are comfortable, because if you don't at some point it'll be "I want heat at any cost". 

Here are few of my favorites:

1. Tankless water heaters are instantaneous.

2. Tankless water heaters save energy.  (Although this is only a myth in about 1/2 of the cases to which people try to apply tankless water heaters.)

3. Radiant heat is old fashioned and less efficient than heating air.

4. Heating is the largest energy load for a household. [reality is that it depends upon climate and many other factors]

5. If you just tell people how they are using energy, they will become more conservative.  {actually true, IF you agree with the Supreme Court that money is speech - i.e., if you tell them by raising their bills]

RSS

Videos

  • Add Videos
  • View All

Twitter

Latest Activity

Paul Scheckel posted a blog post

Renewable Rant: Traditional Energy!

Why, when I open up a newsletter or market evaluation report about “traditional energy” markets, do…See More
9 hours ago
Rob Madden, Solar Home Broker's discussion was featured

Indoor Air Quality Monitors and Meters

I'm considering purchasing the AirAdvice for Homes indoor air quality monitor but it seems to have…See More
10 hours ago
Luis Hernandez's discussion was featured

ERV Configuration

Greetings everyone,     I did an energy audit on this new home that is too tight and needs…See More
10 hours ago
Kim Tanner's discussion was featured
10 hours ago
John Nicholas's discussion was featured

Slab Edge Insulation - A Side Thread to Melissa's Question

Melissa Baldridge inquired about installing slab edge insulation on a potential E-Star certified…See More
10 hours ago
Melissa Baldridge's discussion was featured

ENERGY STAR - Slab Insulation

Folks,Let's say I have a client who's building slab on grade and intending to certify E-STAR.  I'm…See More
10 hours ago
Sean Maxwell's discussion was featured

Blower Door Databases: ATTMA and Retrotec rCloud

Hi guys,We're pushing for blower door testing in the building code here in Australia and we think…See More
10 hours ago
Bob Blanchette's discussion was featured

Real World Ceiling Fan CFM

Has anybody done testing on delivered CFM of ceiling fans? Energy star has a test room where the…See More
10 hours ago

© 2016   Created by Lawrence Berkeley National Laboratory.   Powered by

Badges  |  Report an Issue  |  Terms of Service