Selecting a Water Heater
I am looking at updating the heating and water heating systems in a rental home I recently…See More
All Blog Posts Tagged 'AC' (5)
Conventional AC is not COOL
In order to feel comfortable in the cooling season conditioned air has to be at the right air temperature AND relative humidity. Conventional AC dehumidifies when it is running but it is thermostatically controlled by air temperature only. Which means that when air temperature is reached the AC turns off and stops dehumidifying. Not a big problem if you live in an arid climate such as Pheonix but if you live in New England where the summers are very humid and not…
ContinueAdded by Joseph Novella on May 22, 2012 at 6:36pm — 12 Comments
HVAC and DC Fan Motors
Here are links to my latest posts on how these motors can be used for retrofitting in existing HVAC systems.
HVAC Savings Upgrades – Cutting Fan Watts In Half or More
In this post I cover how the savings can be dramatic, and the most important part is to get duct pressures low.…
ContinueAdded by Christopher Cadwell on April 19, 2012 at 6:14am — 2 Comments
Notable Results in AC Training
The final survey results of the second week of students in the High Performance HVAC classes.
Here are some notable results of what the students felt that they got out of the course.
- How to reduce # of registers while improving comfort.
- Importance of velocity - amount needed to properly mix air.
- How to select register types to control noise and performance.
- Whole house as…
Added by Christopher Cadwell on November 27, 2011 at 9:00pm — No Comments
Super Efficient HVAC is Easy
Attending a week long class where veteran trainer Rick Chitwood is moderator has been entertaining and joyful. In the class which is inside a house that is being retrofit completely we are now designing and installing a super efficient HVAC system.…
Added by Christopher Cadwell on November 17, 2011 at 9:30pm — 9 Comments
Selling AC Retrofits - Notes from the field.
First I talk of safety. I mention old furnaces and CO possibilities, etc. This will usually make them sour up a bit because it is slightly a sales pitch.
Then I usually talk to homeowners about the hot and cold rooms. This is a big button and an easy one to push and get them talking. This adds to the sourness but gains…
Continue
Added by Christopher Cadwell on October 25, 2011 at 10:30pm — 1 Comment
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Eric Kjelshus replied to Patrick Michaelyan's discussion Hot Upper Stories"When I am asked to fix this home. I start with a Heat Loss and gain, blower door IR sq…"
Bud Poll replied to Bachi Brunato's discussion Boxing and Insulating Around Non-ICAT Cans"This is a topic I have discussed many times, but unfortunately cost is all too often the deciding…"
Sean Lintow Sr replied to Bachi Brunato's discussion Boxing and Insulating Around Non-ICAT Cans"If you can't talk them into replacing with IC rated...
Look into Tenmat - those are designed…"
Bachi Brunato posted a discussionBoxing and Insulating Around Non-ICAT Cans
I have a client with 16) 4" halogen recessed light fixtures in the attic.I'd like to cover the cans…See More
Dennis Heidner replied to Patrick Michaelyan's discussion Hot Upper Stories"Could you have them make a simple two line graph of the outside temperature, noting sun/clouds,…"
Bob Blanchette replied to Jose Macho's discussion Why Are Energy-Saving Home Inprovements Down??"You make some valid points, especially with the base rate charges. Increasing the base rate instead…"
Bob Blanchette replied to Jose Macho's discussion Why Are Energy-Saving Home Inprovements Down??"Amen, make energy show it's true cost instead of subsidizing it.
We have some of the lowest…"
Dennis Heidner replied to Jose Macho's discussion Why Are Energy-Saving Home Inprovements Down??"The press report really doesn't give enough information to clearly answer why they are…"
Edward Foskey commented on Edward Foskey's blog post Preparing to Update the Heat Pump"Gustavo,
Thanks for the input. I agree with you in that I will be waiting till my system's…"
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