How to Price HVAC Service Calls, Diagnostics, and Repairs
Pricing is the number one thing solo HVAC techs get wrong. Either you charge what the last shop charged you when you worked there, or you charge “what feels fair” — and both approaches leave money on the table.
The HVAC industry has some of the highest callback rates, warranty claims, and emergency work in the trades. If your pricing doesn’t account for that, you’re losing money on every other job without realizing it.
Here’s how to price service calls, diagnostics, and repairs so every job actually makes you money.
Start with your true hourly cost
Before you can price anything, you need to know what an hour of your time actually costs you. Not what you want to make — what it costs to stay in business.
Add up your annual costs:
- Truck payment, insurance, fuel, maintenance
- Tools, equipment, replacements
- Business insurance and licensing
- Phone, software, accounting
- Health insurance and retirement
- Training and certifications
Divide that by your realistic billable hours per year. Most solo HVAC techs have around 1,200-1,500 billable hours annually — not 2,080. You spend a huge amount of time driving, quoting, ordering parts, and doing admin work that isn’t billable.
Now add the profit margin you want to take home.
That number is your true hourly rate. Most solo HVAC techs should be charging $125-175/hour minimum. If you’re charging less, you’re effectively subsidizing your customers.
Pricing the service call fee
The service call fee (or trip charge) covers the cost of showing up — driving to the job, assessing the problem, and giving a diagnosis.
Typical range: $89-$149
This should cover:
- Drive time (average 30-45 minutes round trip)
- Truck costs for the trip
- The first 15-30 minutes of diagnostic time
Three common pricing models:
- Flat trip charge + hourly after — Simple, transparent. Customer pays $99 to get you there, then hourly for the actual work.
- Trip charge waived if repair is approved — Great for converting service calls into jobs. Customer feels like they’re getting a discount if they say yes.
- Flat diagnostic fee — One price covers trip + diagnosis. Clean and predictable for the customer.
Pick one model and stick to it. Flip-flopping creates confusion and awkward conversations.
Pricing diagnostics
Diagnostic work is where most HVAC techs give away hours for free. A “quick look” turns into 90 minutes of troubleshooting, and then you feel weird charging for all of it.
Fix this with a tiered diagnostic structure:
- Basic diagnostic (0-30 min): Included in the service call fee
- Advanced diagnostic (30-90 min): $95-150 additional — for refrigerant testing, electrical troubleshooting, control board testing
- Full system diagnostic (90+ min): Quoted separately — for intermittent issues, multi-system problems, or warranty investigations
Tell the customer upfront: “The service call includes the first 30 minutes of diagnostic work. If I find it’s a bigger issue, I’ll stop and give you a price before continuing.”
This saves you from eating hours and gives the customer predictability.
Pricing repairs: flat rate vs. time & materials
There are two main ways to price HVAC repairs. Each has tradeoffs.
Flat rate pricing
You charge a set price for each repair based on the job, not the time it takes you.
Example: Capacitor replacement = $285. Blower motor replacement = $650. Contactor replacement = $245.
Pros:
- Customer knows the price upfront
- You get rewarded for being efficient
- Easier to quote over the phone
- Builds trust — no surprise bills
Cons:
- Takes time to build out a flat rate book
- Some jobs will take longer than expected and cut your margin
Most established HVAC shops use flat rate because it’s cleaner and more profitable long-term. Buy a flat rate book or software (like Profit Rhino) or build your own based on typical times x your hourly rate x a markup multiplier.
Time & materials
You charge hourly labor plus the cost of parts with a markup (typically 50-100%).
Pros:
- Easy to start with — no rate book needed
- You never lose money on a long job
Cons:
- Customer doesn’t know the final price until you’re done
- Incentivizes slow work (from the customer’s perspective)
- Harder to compete against flat-rate shops
My recommendation: Start with time & materials, but aim to transition to flat rate within your first year. Flat rate is where the money is.
Parts markup: don’t leave this on the table
Most solo HVAC techs undercharge on parts too. Standard industry markup is:
- Small parts (under $50): 100-200% markup
- Medium parts ($50-$300): 75-100% markup
- Large parts ($300+): 40-75% markup
So a $40 capacitor from the supply house becomes $80-120 on the invoice. A $200 blower motor becomes $350-400.
This isn’t greed. It covers:
- The time you spent ordering and picking up the part
- The truck stock you keep on hand
- The warranty you’re providing
- The risk that the part fails and you have to replace it again
If a customer wants to “buy the part on Amazon and have you install it” — politely decline. You can’t warranty their part, and you need the parts margin to stay profitable.
Emergency and after-hours pricing
If you take after-hours calls, charge for it. Standard emergency rates:
- Evenings (5pm-10pm): 1.5x your normal rate
- Overnight (10pm-8am): 2x your normal rate
- Weekends/holidays: 1.5-2x
Announce this clearly before you head out: “My after-hours rate is $225/hour with a 2-hour minimum. Do you want me to come out tonight or can it wait until morning?”
Most customers will wait. The ones who say yes are paying you properly for disrupting your evening.
The bottom line
Pricing isn’t about what feels fair. It’s math. Calculate your true hourly cost, apply it to every service call, diagnostic, and repair, and mark up your parts correctly.
Do this and every job makes you money. Skip it and you’re running a charity with a service truck.
If you want to stop guessing on pricing and start running a tighter operation, the Solo Trades Pro Kit — HVAC Edition includes a pricing worksheet, service call form, invoice template, and diagnostic checklist built specifically for solo HVAC techs. $9, instant download.