Logo for Flat Rate Plus Online Software App

Flat Rate Pricing Software to Grow your Field Service Business

HVAC Heat Gain Calculator Results Report
Flat Rate Plus Online Dashboard
Select a Flat Rate Task
Tablet PC Showing a Flat Rate Pricing Book Created with Flat Rate Plus Online.

Best Flat Rate Pricing Software in the Field Service Industry.



Easy-to-Use Flat Rate Pricing Software with Invoicing and Credit Card Processing.

Free Credit Card Processing

Build Multiple Price Books

Great Mobile Experience

Easily Update Prices & Tasks

Free Credit Card Processing

Provide the Mobile Experience

Build Multiple Price Books

Easily Update Your Prices & Tasks Lists

We are proud to serve 5,200+ companies.


Flat Rate Plus Online FAQ

Q: What is Flat Rate Plus Online (FRPO)?

A: Flat Rate Plus Online® (or FRPO) is a SaaS flat rate pricing software program that allows users to create and maintain flat rate pricing books. You can learn more about FRPO by looking through this website. The FRPO software is hosted here.

Are you new to the concept of flat rate price or flat rate books? You may wish to read this.

Q: Who built the flat rate price book and software system?

A: Flat Rate Plus Online was designed and built by James R. Leichter, affectionately known as Mr. HVAC. MrHVAC LLC was established in 1998 and has the same EIN and the same owner. James sold his first flat rate software program in November 1996.

Q: Who owns this flat rate software company?

A: Flat Rate Plus Online® is a registered trademark of the Aptora Corporation. Aptora Corporation was established in 1996 and has the same EIN and the same ownership. James Leichter is their president and CEO.

Q: What does a company use Flat Rate Plus Online for?

A: You can quickly look up flat rate prices for common and not so common repairs related to HVAC, refrigeration, plumbing, electrical service, and maintenance. Residential and light commercial work is covered. The price includes the cost of items, labor, and sales tax. Every aspect of the flat rate task can be modified by the user. You may also create equipment replacements and full system change-outs. Technicians can search for flat rate tasks, locate parts, create invoices, receive payments, and email invoices. Once the flat rate books are set up, your company can export the information and import it into their own software programs.

Q: Are there any other features besides flat rate pricing and flat rate book building?

Yes. There are many more capabilities. Here are just a select few.

You may print flat rate price books or present flat rate prices on a mobile device or any computer. Users can present their customers with multiple flat rate options, using a familiar “shopping cart” principle.

Technicians may also create invoices, enter payments, process customer credit cards, email invoices, and synchronize with QuickBooks Online.

Managers can print a report at the end of each day which includes invoice details for easy inventory replenishment. The report includes what parts were sold by which technician. It also includes your preferred vendor and their part number.

There are Labor Rate Calculators for calculating the correct price for service labor. There is a job price calculator for determining the correct retail price for installations and large jobs.

We include a free HVAC Load Calculator that makes sizing HVAC equipment fast and easy.

More Features: Here is a large list of features found in the Flat Rate Plus app.

Q: Does the app have the ability to create invoices and process credit card payments in the field?

A: Yes. You can add tasks and items to a shopping cart, check out, receive payments, process credit cards, and print or email receipts. There is a daily reordering report that tells you what items were sold, by what technician or truck, and what parts need restocking.

Q: What type of company was Flat Rate Plus Online designed for?

A: Any field services company who performs HVAC, refrigeration, plumbing, drain cleaning, electrical service, and maintenance. They may do residential work, light commercial work, or both. We also built FRPO with a small to very small company in mind. Flat Rate Plus Online is especially well suited for those companies that use QuickBooks or just want a super simple flat rate software system with basic invoicing and the ability to accept credit card payments.

Q: What software programs do your interface with or work with?

A: We specialize in synchronizing with QuickBooks Online. FRPO was built with much the same invoice item types, customer fields, vendor information, and more. Invoices and customer payments created in Flat Rate Plus Online are completely recreated in QBO with zero differences. We believe that our Flat Rate Plus Online to QBO synch is the very best in the flat rate pricing software industry.

We don’t have any other synchronizations built for any other software program. However, we offer a universal file export that includes all of your flat rate price book information. The file format we use is universally accepted. You should be able to import the file into virtually any software program designed to accept inventory data imports.

Q: Where can we get more information about Flat Rate Plus Online?

A: This is Flat Rate Plus Online’s (FRPO) dedicated website, and it is full of information. You might wish to jump into the complete FAQ page here. You may also want to create a Forever Free™ account and try our flat rate pricing software out. Just like the name implies, this is not a ten-day demo. Your free flat rate pricing software system account never expires, you will not need a credit card, and there is no obligation.

Please feel free to contact our sales department at (913) 276-2177 or support@flatratesoftware.com. They will answer all your flat rate pricing and software questions. They will offer to give you a 15-minute walk-through of the flat rate pricing software system.

See how Flat Rate Plus® will super-charge your technicians and your profits.

Since 1996, Flat Rate Plus® has been America’s Best Flat Rate Pricing software for the HVAC, refrigeration, plumbing, and electrical industries. James R. Leichter has owned and operated the company the entire time.

No one is more dedicated to flat rate pricing than we are.