David Wentling
  • Raton, NM
  • United States
Share on Facebook Share
  • Blogs
  • Discussions (5)
  • Events
  • Groups
  • Photos
  • Photo Albums
  • Videos

David Wentling's Discussions

ERV recommendations

Started this discussion. Last reply by Luke Langhals Sep 11, 2019. 13 Replies

Looking for ERV recommendations for a new two level ICF residence located at 6800 ft elevation with 6001 HDD base 65 and 0 CDD base 50. Radiant floor heating only. Conditioned living space is 20,000…Continue

Tags: ERV

 

David Wentling's Page

Latest Activity

Luke Langhals replied to David Wentling's discussion ERV recommendations
"I've used the CAR II regulators before. They work, but obviously it's more mechanical moving parts that might fail overtime. I've had good success using simple adjustable diffusers. Diffusers closest to the ERV will be more…"
Sep 11, 2019
David Butler replied to David Wentling's discussion ERV recommendations
"Thanks, Luke. I agree it wouldn't make sense to design an ERV to accommodate high interior moisture loads. I think the simplest strategy for that is to not rely on an ERV to exhaust excess interior moisture, as they're not designed for…"
Sep 5, 2019
John S. Rodenhizer replied to David Wentling's discussion ERV recommendations
"As a Rater and PH guy I have seen a number of units. You do get what you pay for. I also commission for Zehnder, about 180+ to date. Having the ability to dial  in every room to meet a design spec is really special. 2 ECM fans and there…"
Sep 5, 2019
Luke Langhals replied to David Wentling's discussion ERV recommendations
"When it comes to independently ducted ERV systems operating in humid climates during the summer; the high moisture event (shower), on a single exhaust branch combines with the other exhaust streams before reaching the ERV core, this lowers the total…"
Sep 3, 2019
David Wentling replied to Ben Stallings's discussion high CO2 in a leaky house
"I would agree with Daniel's comments and question, is the device accurate. Over time sensors need to be tested and/or replaced. Utilize a dedicated gas sensor to compare results. Not sure which house you were or are in that has the high CO2…"
Aug 26, 2019
David Wentling replied to David Wentling's discussion ERV recommendations
"Thank you for all your comments. House is ICF and local code is 2018 IECC listing maximum 3 ACH50. Depending on zone and shielding selected ACH averages out about 108 CFMnatural. ASHRAE 62.2 calculation indicates 32 CFM continuous required (3 beds,…"
Aug 26, 2019
Daniel Baur-McGuire replied to David Wentling's discussion ERV recommendations
" I second Luke's recommendation for Panasonic, RenewAire, Zehnder, or Venmar (Broan). All good units with humidity recovery. Hook through bathrooms to encourage humidity retention. I personally would choose a Panasonic or Zehnder. The…"
Aug 26, 2019
David Butler replied to David Wentling's discussion ERV recommendations
"@Luke, since you work for a well-known ERV manufacturer, I'm curious if you have access to latent performance data (other than the single point @ summer conditions typically published). A graph would be ideal. I think most practitioners fail to…"
Aug 22, 2019
Luke Langhals replied to David Wentling's discussion ERV recommendations
"Hello David -- Do you have an expected air tightness? What type of blower door test results are you projecting? David is right; you should be using a low flow range hood of 300 cfm with good capture rate. Without an account for how that air will be…"
Aug 22, 2019
Brad Cook replied to David Wentling's discussion ERV recommendations
"Many ERVs, particularly those with enthalpic wheels, use only ONE motor to run two fans. The In/Out are balanced with dampers. The ASHRE standards are guidelines. The installed ventilation system should be capable of moving at least the amount of…"
Aug 22, 2019
Robin Henry replied to David Wentling's discussion ERV recommendations
"Unfortunately I don't have anything to add here but wanted to give this post a bump as I'm a BPI Building Analyst and I'm trying to learn more about what ERV/HRV can accomplish as well as their installation. For what it's worth…"
Aug 22, 2019
David Butler replied to David Wentling's discussion ERV recommendations
"I think you're overreacting to the need for humidity control in your location. If indeed there's a need to remove any moisture, an ERV is the least effective way to do that. Moreover, I advise against locating an ERV supply in a closet, as…"
Aug 21, 2019
David Butler replied to David Wentling's discussion ERV recommendations
"test"
Aug 20, 2019
David Wentling replied to David Wentling's discussion ERV recommendations
"Thank you for the insight David. House only has the first level walls poured, second level floor installed and they are stacking the second level ICF now. Blower door test is some time away. Need to design ventilation based on assumptions and tune…"
Aug 20, 2019
David Butler replied to David Wentling's discussion ERV recommendations
"I generally recommend against using an ERV as primary ventilation for bathrooms & laundry since the enthalpy core acts to minimize moisture transfer from "high to low" (referring to partial vapor pressure of outdoor and indoor air).…"
Aug 20, 2019
David Wentling posted a discussion

ERV recommendations

Looking for ERV recommendations for a new two level ICF residence located at 6800 ft elevation with 6001 HDD base 65 and 0 CDD base 50. Radiant floor heating only. Conditioned living space is 20,000 cf per level plus small amount of conditioned attic due to foaming the roof deck. Lower level is walkout on one side and buried on three. Upper level has garage attached on one side only.Using total volume * 0.35 ach / 60 min/hour = ~120 cfm flow per level. There are two baths and laundry per level…See More
Aug 20, 2019

Profile Information

Company
ConservFirst
Role in Home Performance Marketplace
Educator / Trainer, Energy auditor / assessor / analyst
Professional Certification
BPI, Other

Comment Wall (1 comment)

You need to be a member of Home Energy Pros Forum to add comments!

Join Home Energy Pros Forum

At 11:27am on October 4, 2017, Diane Chojnowski said…

Hi David,

Welcome to Home Energy Pros Forum. 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.

Thanks!
Diane, HEP Moderator

 
 
 

Forum

Insulating Chilled/Cold Water Lines

Started by Sean Wiens in HVAC. Last reply by Sean Wiens yesterday. 10 Replies

Floor I joists and properly installed insulation

Started by Robin Henry in General Forum. Last reply by Brian Robinson on Thursday. 29 Replies

What's the Most Profitable HVAC Job for Your Company?

Started by Wayne Melancon in HVAC. Last reply by bebelyn accessdoors on Thursday. 5 Replies

Looking for a Rater in Sacramento Area

Started by Brian A McFadden in BPI. Last reply by Building Performance Institute Jan 14. 1 Reply

Hydronic System Critique

Started by Sean Wiens in HVAC. Last reply by Sean Wiens Jan 14. 8 Replies

Condensation Quick Fix

Started by Dan Antonioli in General Forum. Last reply by Sean Wiens Jan 13. 12 Replies

How many BTU required to heat air

Started by Sean Wiens in HVAC. Last reply by Sean Wiens Jan 9. 28 Replies

Denver Home Energy Score Pilot Evaluation Report

Started by Julie Saporito in General Forum. Last reply by Jacob Corvidae Jan 9. 8 Replies

Green Button Connect

Started by Rob Buchanan in General Forum. Last reply by Steve Schmidt Jan 6. 3 Replies

Latest Activity

Building Performance Journal posted a blog post

Dust-Control Strategies for Energy Upgrades

In the Winter 2019 issue (our last under the Home Energy name), author Cory Chovanec wrote an…See More
4 hours ago
Sydney G. Roberts liked Macie Melendez's blog post Re-introducing Myself as the Building Performance Journal’s Managing Editor
4 hours ago
Macie Melendez posted a blog post

Re-introducing Myself as the Building Performance Journal’s Managing Editor

I worked on the editorial staff of Home Energy magazine for nearly 7 years before I made the…See More
5 hours ago
Diane Chojnowski added a discussion to the group News & Announcements
13 hours ago
Luis Hernandez replied to Al Tibbs's discussion Energy Audit Book & Equipment in the group Energy Auditing Equipment for Sale, Trade or to Purchase
"Just resend it again just now. Please check your spam folder"
14 hours ago
Jose Macho commented on Chris Laumer-Giddens's blog post Near Perfect Air Tightness Measured in Contemporary Home
"My thinking is zip strip sheathing & tape would have been more cost effective which I have seen…"
yesterday
Al Tibbs replied to Al Tibbs's discussion Energy Audit Book & Equipment in the group Energy Auditing Equipment for Sale, Trade or to Purchase
"Never received your email? Send to altibbs@twc.com "
yesterday
Profile IconJay cooper and Zachary Ames joined Home Energy Pros Forum
yesterday
Sean Wiens replied to Sean Wiens's discussion Insulating Chilled/Cold Water Lines
"Just a follow up to Mark's post "cold waterlines in this space wont be exposed to outside…"
yesterday
Sean Wiens replied to Sean Wiens's discussion Insulating Chilled/Cold Water Lines
":-) - Guess I should not read so literal! That makes more sense."
yesterday
Building Performance Institute liked Kirsten Richnavsky's discussion New BPI Standard for Conducting Energy Audits Published as an ANSI Standard!
yesterday
Building Performance Institute liked Kirsten Richnavsky's discussion Breaking the link between unhealthy homes and unhealthy kids
yesterday

© 2020   Created by Building Performance Association   Powered by

Badges  |  Report an Issue  |  Terms of Service