Bob Blanchette's Discussions (452)

Discussions Replied To (25) Replies Latest Activity

"+1 on the typical GROSS oversizing of furnaces. A "2 burner" (typically 50k or small…"

Bob Blanchette replied Nov 6 to Furnace with ECM: How to Model

5 Nov 13
Reply by Ryan Schmidt

"There's more to it than that. The blower efficiency gain comes using an ECM for low…"

Bob Blanchette replied Nov 4 to Furnace with ECM: How to Model

5 Nov 13
Reply by Ryan Schmidt

"Amen. Limiting size per sqft would be more effective IMHO. It would have to be insta…"

Bob Blanchette replied Aug 15 to ENERGY STAR Furnaces & Failure of DOE Standard

7 Aug 15
Reply by Bob Blanchette

"Motor efficiency could be improved 25% by using a single speed PSC motor instead of…"

Bob Blanchette replied Aug 12 to ENERGY STAR Furnaces & Failure of DOE Standard

7 Aug 15
Reply by Bob Blanchette

"But it's so much easier to size by the 500sqft per ton rule that's been used for dec…"

Bob Blanchette replied Jul 4 to Are Zoned Heating/Cooling Systems a Good or Bad Idea?

24 Jul 5
Reply by John Proctor

"This is exactly why oversizing continues, nobody is willing to stick their neck out.…"

Bob Blanchette replied May 5 to How to Read Load Calculation Reports

37 May 5
Reply by Bob Blanchette

"90% of residential installs are done by the WAG or rule of thumb methods. 500sqft pe…"

Bob Blanchette replied May 3 to How to Read Load Calculation Reports

37 May 5
Reply by Bob Blanchette

"60k is INPUT of your furnace right? If it's a typical 80% that would give you a 48k…"

Bob Blanchette replied May 3 to How to Read Load Calculation Reports

37 May 5
Reply by Bob Blanchette

"He's not going to want to "break the norm" of the 50btu per sqft he's been installin…"

Bob Blanchette replied Apr 27 to How to Read Load Calculation Reports

37 May 5
Reply by Bob Blanchette

"80k x 96.2% = 77k output. No need for a 100k furnace. Oversizing will render the pur…"

Bob Blanchette replied Apr 27 to How to Read Load Calculation Reports

37 May 5
Reply by Bob Blanchette

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Home Energy Pros

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Latest Activity

Steve Waclo posted a discussion

Underperforming? Energy Efficiency of HVAC Equipment Suffers Due to Poor Installation

Hello all,A search of the site seems to indicate this recently published study from NIST has not…See More
6 hours ago
Steve Waclo joined Allison A. Bailes III's group
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HVAC

HVAC design, Manuals J, S, T, & D, Duct leakage, Air flow, ENERGY STAR new home requirements,…See More
6 hours ago
Bob Blanchette posted a discussion

Dual Fuel Systems, at what point do they make sense?

Heat Pump with furnace backup. These make no sense in our area with local NG rates, but they do…See More
19 hours ago
Bob Blanchette joined Hal Skinner's group
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The RCC Classroom (Radiant Control Coatings)

A group where energy professionals can learn about all the different energy saving aspects of…See More
19 hours ago
Shashank Kirloskar posted a blog post

Important Facts about Solar Energy

“I’d put my money on the sun and solar energy. What a source of power! I hope we don’t have to wait…See More
Thursday
reflintorm replied to Dennis McCarthy's discussion Solid state lighting - saves lives- and it improves life .
"In my observation, In most of the lightning appliances led bulbs are used because of their…"
Thursday
Chad Mcaulife posted photos
Wednesday
Bob Blanchette commented on Jeremy Begley's blog post The Home Envelope : Does it Really Matter in a Heat Loss Calculation
"Infiltration makes a HUGE difference. Look at the heat loads on a windy day vs. a calm one. On a…"
Wednesday

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