A new home energy calculator, please share your thoughts

We've recently launched a home energy calculator to help home owners and professionals alike estimate the heat energy gain and loss of homes and large-scale structures. We really tried our best to put a good product out there and we would love to hear your opinions about it.

We figured Home Energy Pros is the best place to find out if our product is any good, so please view this post as us trying to get some insight into what we can do better, where we did alright and where we failed, etc. 

You can visit the main website at http://www.homeenergycalc.com/ and the actual calculator at http://calculator.homeenergycalc.com/

We're really looking forward to hearing your thoughts, suggestions, criticism, and whatever you feel might help us improve on what we currently have. 

Tags: calculator, online, software, tool

Views: 955

Reply to This

Replies to This Discussion

It seems like a lot of work to accurately describe the house, but I guess you get accurate answers for your efforts.

At least I hope you do.   There's nothing (that was mentioned) about describing the insulation in the walls, floors, ceilings, etc.   Is that part of it somewhere that the narrator did not get into?

Whether a floor is over a basement, a slab, or a crawlspace, whether the basement or crawlspace is heated or not makes a difference too.    Is all that taken into account somewhere in the calculator?   What is on the other side of a wall is also relevant…. I did an energy audit where the laundry room had unheated space on 5 sides of it, and that room was so cold, I told the homeowner to keep a small electric heater there so his pipes would not freeze.

In the same home, they had a glass and metal window box in the kitchen…. very cute with glass shelves… It measured 14 degrees today (outside temp was 5) on the infrared camera.

I do BPI standard energy audits for the NJ Home Performance with Energy Star program, and all those things are recorded, and taken into account.

Ira Eisenstein

Strictly Business Energy

Ira

The accuracy of the calculation is governed by the Manual J formulas used by the ACCA.

Instead of asking users to describe a "construction system" such as a wall or floor in detail, the carousel of building systems allows them to choose a wall or floor system that best describes what is in place. The R values of any insulation added will be detailed when selecting a construction system.

Here's a screenshot to show you what I mean:

As for unconditioned spaces such as garages or indeed a laundry room. The Manual J stipulates they are to be considered outside spaces. So when drawing the homes envelop you would not include those areas.

RSS

Videos

  • Add Videos
  • View All

Latest Activity

Profile IconJeffery Liang and Ellen Phillips Soroka joined Home Energy Pros
Friday
Charles Cormany added a discussion to the group Job Board
Thumbnail

Energy Efficiency Incentive Program Manager - Efficiency First California (Berkeley)

Position Title: Program Manager Terms: Full time, available immediatelyAbout Efficiency First…See More
Thursday
Charles Cormany joined Diane Chojnowski's group
Thumbnail

Job Board

This group is for posting jobs related to all aspects of the home performance industry including…See More
Thursday
Linda Wigington liked Home Energy Magazine's blog post Art Rosenfeld's Legacy
Thursday
terry nordbye added a discussion to the group Energy Auditing Equipment for Sale, Trade or to Purchase
Thumbnail

Combustion anaylizer Testo 310

This little beauty only has a few hours on it. Almost brand new in box.Sell: $350.Terry 415 669…See More
Thursday
Barbara Smith's video was featured

Indiana HCA...On Location - Celebrating 40 Years of the Weatherization Assistance Program (WAP)

The Indiana Housing and Community Development Authority (IHCDA) interviewed two clients of Weatherization Assistance Program (WAP). Both homes were weatheriz...
Thursday
Home Energy Magazine's blog post was featured
Wednesday
Profile IconEfficiency First California and Kevin Daly joined Home Energy Pros
Wednesday

Home Energy Pros

Welcome to Home Energy Pros – the unique digital community by and for those who work in the home energy performance arena.

Home Energy Pros was founded by the developers of Home Energy Saver Pro (supported by the U.S. Department of Energy) and brought to you in partnership with Home Energy magazine.  Home Energy Pros is sponsored by the Better Buildings Residential Network. Please honor our Guidelines

© 2017   Created by Lawrence Berkeley National Laboratory.   Powered by

Badges  |  Report an Issue  |  Terms of Service