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.

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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.

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 estimate and invoice PDFs — 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 →

FAQ

Common questions from HVAC techs

Can I see a customer's last 5 service visits in one place?

Yes — every job is sorted under the customer. Tap the customer to see the full chronological job history.

Does Logged track HVAC equipment serial numbers?

Use the job notes field for serial numbers and model info. Logged doesn't have a first-class equipment record in v1.

Can I send a multi-page system replacement estimate with detailed line items?

Yes — line items expand as needed and the PDF paginates automatically.

Does Logged work for a one-truck HVAC shop?

Yes. Logged is designed for the solo HVAC tech.

Will Logged remind me to follow up on a quoted job?

Estimates trigger a push notification when viewed, accepted, or declined. There's no time-based follow-up reminder in v1.

What's the best app for a solo HVAC technician?

For a one-truck HVAC technician, the best app is the one that goes from service call to paid without a desktop: log the visit, snap before/after photos of the unit, send an estimate the customer accepts from a link, and invoice with a Pay Now button — all from your phone, offline. Logged does exactly that for $9.99/mo, versus $39+/mo field-service suites built for multi-crew shops.

Try it on your next service call

Free to download. Log the next furnace visit, document the work, get the invoice paid.