Job and invoice app for HVAC technicians
Every service call needs a record. Every replacement estimate needs to look professional. Logged keeps your job history per customer, works offline in attics with no signal, and sends estimates your customer accepts with one tap from their phone.
Why HVAC techs need a job log app
Logged is a job and invoice app for solo HVAC techs: it keeps a full per-customer service history, photographs the existing equipment, and sends a photo-embedded replacement estimate the customer accepts with one tap from a web link — then invoices with a Stripe Pay Now button.
Every screen works offline in attics and crawlspaces with no signal, and it's free to download — Pro is $9.99/month.
Seasonal callbacks need documentation
"I serviced this furnace 8 months ago — what did I do?" Without a job log you guess. Logged keeps every job per customer permanently — notes, photos, line items, the works. One tap shows you the full history of every visit.
Maintenance contracts need clean records
A residential service contract requires you to document each seasonal visit. Logged's job log with photos and signature on every visit gives you a clean paper trail — no chasing down paperwork or emailing yourself photos.
Big job estimates need to look professional
A $9,000 system replacement quote on a Word document loses to a clean PDF with photos of the existing equipment and clear line-item pricing. Logged's estimate is photo-embedded and sent as a web link the client reviews on their phone.
How Logged fits an HVAC tech's day
Full job history per customer, always on-device
Every job you create in Logged is stored locally and synced to the cloud. Tap any customer to see every service visit — notes, photos, what was replaced, what was billed, and whether it was paid. Works offline when you're pulling the record in an attic.
Photo capture → auto-attach to job → embed in PDF
Photograph the existing furnace, the filter, the refrigerant levels — one tap per photo. Every photo goes into the job record and embeds automatically in the invoice or estimate PDF. No extra steps.
Estimate link the customer accepts from their phone
Build the replacement estimate in Logged, tap Send. Your customer gets an email with a link — line items, photos of the current system, your pricing. They tap Accept and you get a push notification instantly.
How do you track HVAC maintenance jobs and invoices?
Track maintenance work as one job per visit, filed under the customer, and let the invoice hang off that job. Each visit records the date, notes, before/after photos, and line items — and the invoice you generate from that job takes the customer's signature. The customer record then holds the whole service history, and every invoice shows whether it is draft, sent, or paid.
That is the practical substitute for a maintenance-contract module: the record lives with the customer instead of a spreadsheet.
The workflow on a seasonal tune-up is the same every time. Open the customer, add a job for today's visit, photograph the unit before and after, drop in the line items, then tap Complete to generate the invoice and have the customer sign it on the phone before you leave. Saved line items mean a repeat tune-up is a couple of taps, and notes take voice-to-text when your hands are full. The photos and notes stay on the job for good — next spring you open the customer and read exactly what you did last fall, pictures included. Pro backs the photos up to the cloud so they survive a new phone.
On the money side, each job converts to an invoice with the photos already embedded. Invoices sit in draft until you send them, then move to sent and paid — filter the list to Sent and you're looking at everything still owed, with overdue and partly-paid ones badged. Pro adds a revenue report with the outstanding total, card payments through Stripe so the client can pay from the emailed link, and an automatic reminder email to the client 7 days after an invoice was sent.
Two honest limits. Logged has no first-class equipment record in v1 — serial and model numbers go in the job notes, which you read on the job but can't search on (search matches job titles and customer names). And it doesn't schedule recurring contract visits for you; you create each visit's job when it happens.
How can HVAC techs access customer info on their phone?
Open the Customers tab and tap the customer. You get their contact details, address, lifetime revenue, and their full job and estimate history in date order — tap any job for its photos, notes, and the invoice with its payment status. All on the phone, with no desktop and no web login.
It works with no signal. Logged stores everything on the device first and syncs to the cloud when you're back online, so pulling up last year's service notes in a basement or an attic behaves the same as it does in the driveway. Sending works down there too: tap Send with no bars and the invoice queues as "Queued to Send", then goes out on its own the moment you're back in signal. Tapping the address hands off to Apple Maps, Google Maps, or Waze for directions to the next call.
What HVAC techs use most in Logged
- ✓ Full job history per customer — every service call, photo, and invoice in one place.
- ✓ Offline-first — works in attics, crawlspaces, and basements with no cell signal.
- ✓ Before/after photos embedded in the invoice PDF — free on every plan, no upgrade needed.
- ✓ Estimates with line items clients accept from a web link — no app, no PDF hunting.
- ✓ Push notification when estimate is viewed, accepted, or declined.
- ✓ Client signature capture — sign off on every service visit.
- ✓ Stripe Connect card payments on Pro — clients pay the invoice from their email.
What an HVAC invoice app costs
Logged is free to download and Logged Pro is $9.99/month or $89.99/year. Most invoicing apps for HVAC techs fall into two camps: solo-focused apps at $0–$20/month, and field-service platforms at $39–$99/month that add scheduling and dispatch a one-person crew rarely uses.
The free tier covers 10 jobs, 5 customers, and 3 estimates with no credit card required.
| App type | Typical cost (2026) | What drives the price |
|---|---|---|
| Free / freemium invoicing | $0 (usage-capped) | Limits on jobs, customers, or estimates; upsell to a paid tier |
| Solo-focused paid apps | $8–$20/mo | Unlimited jobs, card payments, cloud backup, client alerts |
| Field-service platforms | $39–$99/mo | Team scheduling, dispatch, multi-crew CRM — overhead for a solo operator |
| Logged Pro | $9.99/mo or $89.99/yr | Unlimited jobs & customers, Stripe payments, photo backup, client-viewed alerts |
Ranges are category figures across common HVAC invoicing apps, verified against vendor and App Store pricing on 2026-07-31. See full Logged pricing →
Common questions from HVAC techs
Can I see a customer's last 5 service visits in one place?
Does Logged track HVAC equipment serial numbers?
Can I send a multi-page system replacement estimate with detailed line items?
Does Logged work for a one-truck HVAC shop?
Will Logged remind me to follow up on a quoted job?
What's the best app for a solo HVAC technician?
Try it on your next service call
Free to download. Log the next furnace visit, document the work, get the invoice paid.
Built for other trades
Compared to
Read next: Choosing an invoicing app for HVAC techs →
Last verified: 2026-09-30.
Maintained by Warner Creates LLC. Pricing and feature details verified against the live Logged app and its App Store and Google Play listings.