Pursuing the future of energy efficient homes since 2015

BTF Net Zero Designs

BTF Net Zero DesignsBTF Net Zero DesignsBTF Net Zero Designs
  • Sign In
  • Create Account

  • Orders
  • My Account
  • Signed in as:

  • filler@godaddy.com


  • Orders
  • My Account
  • Sign out

  • Welcome Home
  • Shop Plans
  • Let's Talk Shop
  • FAQ's
  • More Services
    • Ez-ERV Tool
    • HERS Ratings
    • Manual J Energy Modeling
    • On Site Septic Design
    • Timber Frame Post & Beam
  • ABOUT
    • Contact & About
    • In the Media
  • Free Downloads
  • More
    • Welcome Home
    • Shop Plans
    • Let's Talk Shop
    • FAQ's
    • More Services
      • Ez-ERV Tool
      • HERS Ratings
      • Manual J Energy Modeling
      • On Site Septic Design
      • Timber Frame Post & Beam
    • ABOUT
      • Contact & About
      • In the Media
    • Free Downloads

BTF Net Zero Designs

BTF Net Zero DesignsBTF Net Zero DesignsBTF Net Zero Designs

Signed in as:

filler@godaddy.com

  • Welcome Home
  • Shop Plans
  • Let's Talk Shop
  • FAQ's
  • More Services
    • Ez-ERV Tool
    • HERS Ratings
    • Manual J Energy Modeling
    • On Site Septic Design
    • Timber Frame Post & Beam
  • ABOUT
    • Contact & About
    • In the Media
  • Free Downloads

Account


  • Orders
  • My Account
  • Sign out


  • Sign In
  • Orders
  • My Account

Energy Modeling Services

We believe energy modeling should be accessible & cost effective,

providing you with one of a kind value at a great price!

Submit A Project

New Homes

Manual J Energy Modeling

Existing Homes

New does not equal energy efficient 


With the increasingly tight construction methods, materials and requirements of new homes, energy modeling has become increasingly important.  


Used to accurately size, select and locate HVAC equipment in new homes, energy modeling is becoming more and more essential. 

Energy modeling can be a helpful tool in the design phase as well as prior to, and into construction. 


 

Existing Homes

Manual J Energy Modeling

Existing Homes

Replacing the boiler or adding AC to your existing home?


Energy models for existing homes can be a useful tool when it comes to replacing outdated HVAC equipment. 


Chances are the HVAC equipment in your home was sized using a ball park guesstimate. Likely leaving you with oversized equipment or even undersized distribution. Improperly sized HVAC equipment often leads to short cycling, increased wear and tare, increased operating costs and reduced operating life for your equipment. 


Manual J Energy Modeling

Manual J Energy Modeling

Manual J Energy Modeling

Learn to create your own Manual J Models w/ our course on Heatspring


Manual J calculations are required by more organizations and programs every day, including:

  • Certifications, like Passive House, HERS, DOE
  • Electric Utilities, to qualify for rebate programs
  • Building designers, for decision-making in the design phase


Already an essential design tool, energy  models are used for code compliance, utility incentives & green  building certifications. As we move towards a resilient, sustainable  & emission free future, energy modeling should be used as a tool for  decision making. Not only for sizing equipment but also for shaping  buildings & selecting materials as well. 

Find out more

Outdated Methods

A Quick Case Study

A Quick Case Study

Energy modeling has been a part of commercial construction for decades. However, it is fairly new in residential construction. Historically residential builders and HVAC installers have been using a rule of thumb - a BTU/SF guesstimate.   


The BTU/SF method does not works well with today's tight buildings & materials. More and more obvious becomes the over sizing of HVAC equipment that this method leads to. 

A Quick Case Study

A Quick Case Study

A Quick Case Study

Two of our stock plans for example: The same designed envelope, R-values, window selections, assemblies & location

  • A 1200 SF home = 8 BTU/SF
  • A 750 SF home = 16 BTU/SF


That difference is double! 

Plus, the variation is even greater when modeled room by room. 

We found for our own plans that one room may need 25 BTU/SF and another may need just 4 BTU/SF, on the coldest day of the year.

Detail of Services

A Quick Case Study

Detail of Services

Using Manual J based software analysis tools we can offer many levels of detail. 


Our energy models can include a complete analysis of infiltration, solar gains, internal gains, energy recovery, ventilation, make-up air, historical and projected weather patterns on an hour by hour model. 


We can provide 8760 energy analysis on a room by room basis. But, if you simply want an energy model that provides only the total home loads we can do that too!

Free Project Estimates - Just reach out!

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Energy efficiency begins with the exterior shape & size of a building, followed by the size & location of window & door openings. 


It's when you combine these exterior design concepts with high efficiency materials,  electric appliances and properly sized HVAC equipment, that you achieve truly energy efficient homes.    

Learn More: Net Zero & Fossil fuel free

Copyright © 2025 BTF Residential Designs, Bite The Frost LLC, All Rights Reserved. 

  • Welcome Home
  • *Ez-ERV Tool Sign-In*
  • Contact & About
  • Terms and Conditions
  • BTF Copyright Notice
  • Free Plan Book Download
  • Custom Design
  • Careers

Celebrating 10 years! Est. 2015

This website uses cookies.

We use cookies to analyze website traffic and optimize your website experience. By accepting our use of cookies, your data will be aggregated with all other user data.

Accept