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Field Operations for the Skilled Trades

Built for the field.
Run like a business.

TOS (Time On-Site) is the operating system for HVAC technicians and business owners who are serious about growing. From solo tech to full-scale operation.

Diagnosis ✦ Dispatch ✦ Time Tracking ✦ Parts Management ✦ Invoicing ✦ KPI Dashboard Service Call ✦ Repair ✦ Preventive Maintenance ✦ Installation ✦ Inspection ✦ One Platform. Diagnosis ✦ Dispatch ✦ Time Tracking ✦ Parts Management ✦ Invoicing ✦ KPI Dashboard Service Call ✦ Repair ✦ Preventive Maintenance ✦ Installation ✦ Inspection ✦ One Platform.

One platform.
Built for HVAC.

TOS was built for HVAC because that's where the gap was most visible. Technicians doing serious work with no system built for how they actually operate in the field.

From solo tech to growing team to full business operation, TOS gives every HVAC company the infrastructure it needs to run professionally and scale with confidence.

NFC tags on every unit. Every visit logged. Every customer informed. That is the TOS difference.

See the Full System →
11
Core Databases
Jobs, Time, Parts, Invoices, Clients, and more, all relational.
CCC
Diagnosis Framework
Complaint → Cause → Correction. Built into every job type.

Knowledge for
the field.

Practical intelligence for HVAC and refrigeration techs who want to work smarter, earn more, and build something lasting.

FIELD STORIES

The Compressor They Did Not Sell

A blown fuse. A compressor that did not need replacing. And a decision that defined what kind of business one company would become. The honest call is almost always the more profitable one over time. It just requires a longer view.

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Field Stories
What the Apprentice Saw

You do not just learn how to fix equipment on the job. You learn what kind of tech you will become. The most important lesson that afternoon had nothing to do with the repair.

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Field Lessons
The Fuse That Changed Everything

One blown fuse. The smallest part in the system. The largest lesson in the trade. Why a diagnosis that stops at the first answer that makes sense is not a diagnosis at all.

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Industry
The Price Spike Nobody Warned You About: What the R-410A Phaseout Is Really Costing Field Operators

Prices are up 15 to 25 percent since January and climbing every week. Small operators are absorbing the hit while distributors sit on stockpiles.

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Industry
R-410A Is Gone. Your Customers Don't Know Yet. Here Is What You Tell Them.

Your customers have no idea what the phaseout means for their units or their wallets. That conversation is coming. Here is how to have it without losing the account.

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Industry
You Have a Building Full of 410A Units. Now What?

You are not required to replace them. But the economics of servicing R-410A equipment are changing fast. Here is the decision framework every building owner needs right now.

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The Future
AI Is Not Coming for Your Wrench. But It Might Be the Best Tool You Never Learned to Use.

The fear is real and it makes sense. But the trades are built on physical presence, sensory diagnosis, and human judgment. Here is the honest truth.

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Personal
What Nobody Tells You About Being an Apprentice

Part 1. What I watched happen to the people who did not make it, and why it matters for anyone entering any trade.

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Personal
The Attitude That Separates the Ones Who Stay From the Ones Who Don't

Part 2. The mindset from my heavy duty vehicle sales background that changed how I experienced every hard day in the trade.

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Personal
What the Trade Actually Gave Me Once I Gave It Everything

Part 3. The credibility, the people skills, the business mind, and the identity that the trade built. And how it led to TOS.

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Getting Started
How New HVAC Techs Actually Break Into the Trade

The catch-22 is real. But there are specific paths that actually work for people without experience.

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Reputation
You Got a Bad Review That Was Not Your Fault. Here Is Exactly What to Do.

A complete step-by-step playbook for handling unfair, mistaken, or fraudulent Google reviews professionally.

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Field Ops
You're Losing Money Every Day You Don't Track Your Hours

Most techs underestimate how much money slips through the cracks when time is not tracked properly.

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Operations
PM and Repair Are Not the Same Job. Stop Treating Them Like They Are.

Billing a maintenance visit the same way as a repair is leaving money on the table and creating data chaos.

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Diagnosis
Diagnosis Done Right: The CCC Framework Every Tech Should Know

Complaint, Cause, Correction. The three-step framework that separates professional techs from guessers.

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Getting Started
What Every Young Tech Should Know Before Their First Solo Job

Your first solo job is coming. Here is the preparation that separates techs who grow quickly from those who struggle.

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Mindset
What Separates a Good Tech from a Great One

The gap is almost never what you know. It is almost always how you operate.

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Career Growth
How to Go From Employee Tech to Running Your Own Operation

The gap between thinking about it and doing it is not talent. It is preparation.

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Reputation
Your Reputation Travels Faster Than Your Truck

In a market like New York, one job handled well or poorly moves through a network before you are back at the shop.

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Referrals
How to Turn One Customer Into Five

The practical playbook for turning a single satisfied customer into multiple accounts without being pushy.

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Reputation
How to Lose a Client You Never Met

You lose customers you have never spoken to all the time. Here is how it happens and how to stop it.

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Money
How to Read Your Own Numbers Without Being an Accountant

Five numbers every trade business owner must understand to know if they are actually building something.

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Money
How to Know If a Job Was Actually Profitable

Revenue and profit are not the same thing. Here is how to calculate what a job actually earned you.

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Money
How to Stop Undercharging Without Losing Your Customers

The fear of raising rates is costing most trade businesses more than a rate increase ever would.

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People
How to Hire Your First Technician Without Making a Costly Mistake

The most common first hire mistakes have nothing to do with technical skill.

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People
How to Manage Someone Who Works Differently Than You

Managing style differences without constant friction is one of the most underrated skills in small business.

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People
How to Build a Team Culture That Protects Your Reputation

Culture is not abstract. It is how your techs show up to a job when you are not watching.

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Customers
How to Handle a Customer Who Disputes Your Invoice

The right response to an invoice dispute starts long before the customer makes the call.

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Customers
How to Handle an Unreasonable Complaint Without Losing Your Professionalism

Not every difficult customer is being unreasonable. But some are. Here is how to tell the difference.

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Customers
How to Fire a Customer Who Is Costing You More Than They Are Worth

The customer nobody talks about ending. Here is how to do it cleanly and professionally.

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Dear Customer
Dear Homeowner: The Unit Your Contractor Sold You Might Be the Wrong Size

The bigger is better myth is one of the most expensive beliefs in residential HVAC. Here is what your contractor should have told you.

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Dear Customer
Dear Building Manager: The Wrong Size Unit Is Costing Your Tenants and Your Budget

Persistent tenant complaints, high energy bills, and premature equipment failure. The cause is often decided before the equipment is installed.

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Money
Why Most HVAC Techs Are Undercharging and Don't Even Know It

Most techs set their rate by guessing or copying a competitor. Here is the real calculation built from actual costs.

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Customers
Why Your Best Commercial Account Might Be Your Worst Business Decision

Repeat commercial work sounds like the holy grail. But a high-volume account that controls your pricing is not an asset. It is leverage being used against you.

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Business
You Bought the Business. Not the Old Owner's Prices.

When you acquire a trade business, you take on the customer list, the reputation, and the relationships. You do not take on an obligation to keep pricing that cannot sustain your business.

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Whether it is feedback, a story that resonated, a tool request, or a question about TOS. I read everything.

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