A look at it
Built to be used with one hand, on the job.
For small service shops · Miami first
The field app for one-to-three-tech shops — HVAC, water heaters, and the major appliances you service, each with the repair guidance built in. No training, no setup call: open it and you're organized. Then it earns its keep on every call.
Free for 30 days, then $29/mo for up to 3 users · $5 per extra user
Everything about the unit — on one screen. (Illustration)
See it work
A hands-on version you can click through — no signup, sample data only. We'll wire it here once it's ready.
Right now it's a phone full of photos, a text thread you scroll through for the address, and ChatGPT for the diagnosis. It works… barely.
Coilvault is the version that remembers — for about the same effort you're already putting in.
Pays for itself
You're not really paying for software. You're getting back the time and the parts you're losing right now.
Your tech shows up with the right part the first time — because the unit's history and the built-in guide already said what it would need. Every return trip you don't make is an hour, a tank of gas, and a customer who stays happy.
You buy a 5-pack of capacitors, install one, and the other four vanish into the truck. Coilvault tracks what you bought against what you installed and flags what's still inside the return window — that's cash on your shelf instead of written off.
Nobody likes re-explaining their system to a stranger. When your tech walks back in already knowing the unit's history, you're the one they call first next time — not whoever's cheapest that week. Repeat business is the cheapest business you'll ever get.
Skip one second trip a month, win back one repeat customer, or return a box of parts you'd have eaten — any one of those, and it's already paid for itself.
Built in
No more digging through forums or asking ChatGPT from the top of a ladder. The guidance is built in — for HVAC, water heaters, and major appliances alike, written for the equipment you actually work on, in the climate you actually work in.
A look at it
And it works offline
In a concrete equipment room, out past the edge of cell coverage, wherever the signal dies — log the visit right where you're standing. It saves on the phone and syncs itself the moment you're back in range. Nothing's lost because the connection dropped.
And once it syncs, it lands on that unit's own record, building the history the next visit starts from — something the notes app in your pocket never will.
How it stacks up
| Coilvault | Phone, notes & Google | Big field-service software | |
|---|---|---|---|
| Free or cheap to start | Yes | Free | No — $$$ + contract |
| Nothing to learn | Yes | It's just your phone | Training required |
| Keep logging with no signal | Yes | Notes yes, the rest no | Varies |
| Remembers each unit's history | Yes | No | Per company only |
| Repair guidance built in | Yes | You Google it | No / generic |
| Tracks parts bought vs. installed | Yes | No | Higher tiers only |
| Simple quote & invoice on site | Yes | Separate apps | Yes, but heavy |
| Made for a 1–3 person shop | Yes | It's just your phone | Built for bigger |
Swipe the table sideways on a phone to see all three.
Who it's for
Water heaters, refrigerators, washers, dryers, dishwashers, ovens — Coilvault covers them too, each with its own built-in guidance. Same loop everywhere: log the unit, see what tends to fail, quote and invoice on site. HVAC is our first market — that's where the Miami permit head-start lives — but the product isn't HVAC-only.
If you already run ServiceTitan, Housecall Pro, or Jobber, this isn't built for you — and that's on purpose. Coilvault is for the shop that never wanted all of that.
And it remembers
The service history follows the equipment, not the paperwork. Come back in two years and it's already there — no digging. And on a brand-new address, we've loaded the county's public A/C permit record, so even a first visit isn't a blank screen.
And the customer feels it. The shop that remembers their system is the one they keep calling — that's how memory turns into repeat business.
We're starting in Miami, where we can go deep before going wide. The history compounds fastest when the same neighborhood keeps coming back.
Straight answers
You start with a free 30-day trial — no card to begin. After that it's $29 a month for up to three techs, plus $5 for each additional tech. No setup fees, no contract, cancel anytime.
No. If you can take a photo and send a text, you can run this. It opens on your phone, there's nothing to install on a computer, and there's no setup call to sit through.
Because your phone forgets. The photos pile up, the address is buried in a text thread, and Google doesn't know this unit. Coilvault keeps it all on the equipment and hands you the guidance up front — for about the same effort you're spending now.
No. HVAC is our first market, but Coilvault covers water heaters and major appliances too — refrigerators, washers, dryers, dishwashers, and ovens — each with its own built-in guidance. If you service any of those, you get the full product, not a stripped-down version. (The Miami permit head-start is the one HVAC-only perk, since it comes from public A/C-permit records.)
Yes — the part that matters in the field does. Log the job in an attic, a basement, or a dead zone, and it saves right on your phone, then syncs the moment you're back in range. Nothing gets lost because the bars dropped.
You do. Your customers and your records are yours. We don't sell them, and we don't hand your book of business to anyone.
Then this probably isn't for you, and that's fine. Coilvault is built for the shop that never wanted a big system in the first place — not to replace one you've already set up.
We're building now and bringing on early shops in waves. Join the list and we'll reach out when there's a spot — and we'll ask what your trucks need before we build the rest.
Still have a question? Send us a message and we'll get back to you.
Contact us
Want to start your 30-day trial, see a quick demo, or just ask whether Coilvault fits your shop? Send a message and we'll get right back to you.