Brad Cook
  • Warren, VT
  • United States
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Brad Cook's Discussions

When is a fuel history confidential and why?

Started this discussion. Last reply by David Meiland Mar 24, 2018. 5 Replies

I always try to get a 3+ year fuel history from clients prior to starting an energy assessment. If the client recently bought the property, the fuel dealer often cites confidentiality rules as to why…Continue

Too many Heat Pump Water Heaters in a basement?

Started this discussion. Last reply by Crista Oct 19, 2017. 12 Replies

I recently met with the owner of a local rural inn to discuss performing a comprehensive energy assessment for him. He has been looking at replacing his existing propane boiler and three 80 gal.…Continue

BDT with vermiculite in hollow CMU walls?

Started this discussion. Last reply by Jan Green May 11, 2017. 20 Replies

We don't have many brick homes around here in central Vermont. I recently visited a one-story ranch home that was built with exterior walls of hollow core CMUs (concrete masonry units), a brick…Continue

 

Brad Cook's Page

Latest Activity

Brad Cook commented on Sam Feder's blog post Mechanical Room Temperature
"Stephen- the OP did note that the furnace is direct vent which means sealed combustion. In my opinion, if you are worried about freeze problems, I would also be concerned with what would happen if the furnace failed. Then you would have a…"
Friday
Brad Cook replied to Sean Wiens's discussion How many BTU required to heat air
"I don't dive into numbers as well as David does because if you do analyze a situation only by numbers, you need to be very careful to include ALL parameters that might have an effect on the solution. When using assumptions, such as delta-Ts or…"
Dec 14, 2019
Brad Cook replied to Sean Wiens's discussion How many BTU required to heat air
"If your room is air sealed and insulated on all 6 sides, where is the thermal energy going to come from? If you duct air from outside, the air is to cold in the winter for the heater to operate in heat pump mode (and COP falls off below around 65…"
Dec 13, 2019
Brad Cook replied to Ben Stallings's discussion radon mitigation with HRV?
"For floor drains that rarely (if ever) see water, pour some mineral oil in the trap to seal out any gases from entering the house. It won't evaporate like water."
Oct 1, 2019
Brad Cook replied to Ben Stallings's discussion radon mitigation with HRV?
"It appears that you don't understand the purpose of a radon mitigation system. Properly installed, such as system does NOT take any air from the house. Its purpose it to create a slight negative pressure under the slab (or heavy duty plastic…"
Sep 30, 2019
Brad Cook replied to Haley Keegan's discussion Baffles without soffit vents?
"Even in a cold attic above a tightly sealed house, you can have condensation in colder climates. Think of a relatively warm, sunny day in winter heating up the attic air as it exchanges with outside air. Warmer air can hold more moisture. At night…"
Sep 2, 2019
Brad Cook replied to Haley Keegan's discussion Baffles without soffit vents?
"I didn't say never. Read my qualifying remarks regarding walls.,"
Sep 2, 2019
Brad Cook replied to Haley Keegan's discussion Baffles without soffit vents?
"The whole rationale for venting a roof is to provide a path for moisture to escape. The standards date back to the 1930s when fiberglass was beginning to be popular as insulation. Air moves through the fiberglass and if the roof deck is below the…"
Sep 1, 2019
Brad Cook replied to Ben Stallings's discussion high CO2 in a leaky house
"What is discordant is that the CO2 in the Living Room is high even when the OP is home alone during the day, yet quickly goes down to normal levels when people leave. If the CO2 level drops fairly quickly, then the house must be well…"
Aug 30, 2019
Brad Cook replied to Ben Stallings's discussion high CO2 in a leaky house
"Lunos is an expensive HRV that can only move 20 CFM maximum The Panasonic Whisper ERV instructions specifically state to not install in a bathroom or kitchen!"
Aug 30, 2019
Brad Cook replied to Ben Stallings's discussion high CO2 in a leaky house
"I have the  TIM10 Desktop CO2, Temp. & Humidity Monitor from co2meter.com. I have compared it with a $400 handheld, calibrated meter and a dedicated data logger (Lascar) and found the readings to be reasonably accurate (it is rated at +/-…"
Aug 28, 2019
Brad Cook replied to Ben Stallings's discussion high CO2 in a leaky house
"There is some good information in these posts, mixed in with a lot of misinformation, conjecture and speculation that does not consider the facts provided by the OP. I looked on the Uhoo website and could not find any information on what sensors are…"
Aug 28, 2019
Brad Cook replied to Chris Stratton's discussion Okay to use 1" polyiso as a insulation base for 50 gallon heat pump water heater?
"Not all insulation is the same. For example, Dow's Super Tuf-R polyiso has a compression strength of  25 psi (3,600 lbs per sq.ft.) and a permeance of <0.03 perm, but IKO's Enerair has a compression strength of 20 psi (2,880 lbs…"
Aug 23, 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
Brad Cook replied to Brennan Less's discussion Summer mid-day Condensation in newly insulated unvented, cathedral ceiling using foil-faced polyiso
"Yes & No - We ventilate a roof to allow moisture to escape. In a well insulated roof with a vapor impermeable rigid insulation (warning- not all rigid insulation is a Class I vapor retarder!) vapor escaping is not a concern, but heat loss is.…"
Aug 11, 2019
Brad Cook replied to Brennan Less's discussion Summer mid-day Condensation in newly insulated unvented, cathedral ceiling using foil-faced polyiso
"Stripping a roof just to add a ventilation space is only an attempt at fixing the symptom. If you are going to strip the roofing, then add at least a few inches of rigid insulation first. With adequate vapor impermeable insulation covering the…"
Aug 10, 2019

Profile Information

Company
Building Performance Services LLC
Role in Home Performance Marketplace
Contractor: insulation, Energy auditor / assessor / analyst
Professional Certification
BPI, Home Energy Score Qualified Assessor
Twitter ID
@fixitron
Facebook Page
https://www.facebook.com/Building-Performance-Services-137548512935...
LinkedIn Profile
https://www.linkedin.com/in/brad-cook-66aa0018?trk

Comment Wall (1 comment)

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At 2:59pm on October 12, 2016, Diane Chojnowski said…

Hi Brad,

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.

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

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Luis Hernandez replied to Al Tibbs's discussion Energy Audit Book & Equipment in the group Energy Auditing Equipment for Sale, Trade or to Purchase
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Jose Macho commented on Chris Laumer-Giddens's blog post Near Perfect Air Tightness Measured in Contemporary Home
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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."
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