Home of Off-the Charts* 
(FOR WHOLE SYSTEM DESIGN CD-ROM CLICK HERE)
*Patent Pending

KR Services
Infrared
SYSTEM DESIGN
HVAC Tech

Off-the-Charts " CONTRACTOR MODELING SPREADSHEET"
FOR RESIDENTIAL EQUIPMENT SELECTION

Note: This is a new updated version for Windows 8.1 and Windows 10!

ICC CODE REQUIRES USE OF AN ACCA MANUAL S
"OR OTHER APPROVED HEATING AND COOLING CALCULATION METHODOLOGIES" FOR THIS TASK. 

THIS "APPROVAL" IS FROM THE BUILDING CODE OFFICIAL, NOT ACCA.

NOTE TO CODE OFFICIALS:
THIS PRODUCT IS INTERPOLATING FOR: 
OUTDOOR TEMPERATURE, INDOOR TEMPERATURE, INDOOR R/H, INDOOR CFM, COIL BYPASS FACTOR, ALTITUDE, and LOAD CALCULATION SENSIBLE / LATENT RESULTS; in the same way manufacturers create their expanded data charts from AHRI data. 

please feel free to email krservices@cox.net with any technical questions.

But with OTC, you only enter your design conditions, and the AHRI RATING
of what you want to use,
and you will see whether you've made
the right choice. 
You can then adjust your airflow,
to possibly match it closer to the latent / sensible needs from your heat load,
and you're done.
If you have manufacturer data,
you can also fine tune the OTC output to it if desired,
or verify whether IT is corrupt.

You can then proceed with duct sizing, permit filing, etc.,
without having to wait on your suppliers' inventory report.
You could also find and change your Brand selection and model numbers easily, 
at any later time with this same program.

THE CURRENT VERSION (v16.40.##) OF THIS PRODUCT ALLOWS ENTRY
OF
FIVE HVAC SYSTEMS FOR ONE ADDRESS!

HERE'S WHAT THE RESULTS TABS LOOK LIKE:

Install Instructions and Videos  Click here

The science of "Equipment Selection" Click here

Compliance of OTC with Codes 
and Other Standards
Click here

Frequently Asked Questions about OTC Click here

Why Expanded Data Charts are a Joke! Click here

 

Download a Free 30 day trial version of Off-the-Charts here.
Most computers will use the 32-bit Self-Installer, try it first, click the check-mark, and select "Run" when prompted:

32 bit Self-Installer (puts shortcut on desktop):

Some PC's may require manual installation, see the install instructions page to help on using zip files: 
32 bit Excel zipfile:   64 bit Excel zipfile: 

There are no annual fees, per use fees, you OWN this software. You will be sent a license key after purchase. There is no charge for minor revisions sent out the first year.

 AFTER YOU HAVE REVIEWED THE TRIAL, please fill out these information boxes and then click the buy-now button below: 


The 5 HVAC System price is $125.00 FOR ONE COMPUTER 
THE POP-UP BOX OF THE TRIAL INDICATES HOW TO SEND AN E-MAIL WITH YOUR INFO TO ACTIVATE YOUR PROGRAM COPY AFTER PAYMENT. 
(see videos link above) 

NOTE: PLEASE ALLOW 1-4 DAYS TO RECEIVE THE LICENSED COPY, 
YOU MUST SEND YOUR COMPUTER I.D. EMAIL!

 

Enter your company name as you wish it to appear on software forms:
Please enter email to appear on software forms if different from Paypal purchasing client:
Please enter City and State of company to appear on on software forms:

not approved by ACCA Manual S

Hit Counter

5-14-16

 

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