Built for solo & two-person HVAC shops

HVAC scheduling & invoicing without the complexity

Survive the summer and winter rush with a simple calendar, automatic customer reminders, and invoices that get paid — all for one flat price.

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Keep up when the heat wave hits

HVAC work comes in waves — dead-quiet, then twenty calls in a day. DuoPaid keeps the busy weeks from running you.

❄️ The first hot week floods you with calls and your schedule turns to chaos.

Fixed: drop every job onto one week calendar as it's booked, so you can see your day at a glance and stop double-booking.

🔧 Seasonal tune-up customers forget they're due — and you lose the recurring work.

Fixed: text reminders keep maintenance visits on the calendar instead of falling off it.

💵 You install a system but the invoice sits for a week while you're slammed.

Fixed: invoice on-site and text a card payment link the moment the job's done.

Everything an HVAC shop needs. Nothing it doesn't.

No enterprise dispatch or fleet tools you'll never touch — just booking, reminders, and invoicing.

📅

Job scheduling

A clean week calendar for tune-ups, service calls, and installs you can share with your helper.

💬

Customer texts

Automated reminders and on-my-way messages that keep maintenance visits on track.

🧾

Invoicing

Itemized invoices with a tap-to-pay card link, sent the minute the system's running.

👥

You + one helper

Add a partner or tech to share the schedule and customer list. Priced for two.

One flat price for your whole HVAC business

No tiers, no per-user fees, no add-ons. Try it free for 14 days.

$29/mo

Everything DuoPaid does, for you and one helper.

Unlimited customers & jobs
Week calendar scheduling
Automated SMS reminders
Invoicing with card payment links
Owner + one invited helper

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14-day free trial · No card required

HVAC questions, answered

What's the best scheduling software for a small HVAC business?

For solo and two-person HVAC contractors, the best software is one that handles the seasonal rush without complexity. DuoPaid gives you scheduling, customer texts, and invoicing for a flat $29/mo, so you can book tune-ups and service calls fast during peak season.

How do HVAC techs invoice customers?

You turn a completed tune-up, repair, or install into an itemized invoice in seconds and text the customer a secure card payment link they can pay on the spot.

Can I text customers reminders for maintenance visits?

Yes. DuoPaid automatically texts appointment reminders and on-my-way messages, with built-in STOP opt-out handling, which helps keep seasonal maintenance visits from slipping.

How much does HVAC scheduling software cost?

Larger field-service platforms often start around $49/mo and rise with users. DuoPaid is a flat $29/mo with everything included and a 14-day free trial, no card required.