Gas Certs lets you fill in a CP12 (the Landlord Gas Safety Record), a Boiler Service Record or a Gas Warning Notice on your phone, approve it, and send it straight to the landlord or client as a PDF. No paper pads, no typing it up later at the kitchen table.
Before you start
You need two things on record, both one-off:
- Your business Gas Safe registration number under Settings.
- The engineer's Gas Safe licence number and its expiry date, taken from their Gas Safe ID card, on their team profile.
Mucka asks for these the first time you open a draft if they're missing, and you can't approve a certificate until they're filled in. They're a legal requirement on the record, not a Mucka rule.
A Gas Safe ID card is renewed every year and the number changes with it, so Mucka also won't let you approve a certificate under a licence that's out of date. When the card is renewed, update the number and expiry on the engineer's team profile and you're good to go again.
Start the certificate
You can start one two ways:
- From the job. Open the job from Jobs and use the Gas Certificates card. Starting it here links the client, the property and the engineer for you, so there's nothing to re-key.
- From the Gas Certs page. Go to Gas Certs, tap New certificate, and pick the type (CP12, Boiler Service Record or Gas Warning Notice).
Fill it in
Work down the form on site:
- Appliances. Add each appliance with its location, make and model, then record the checks. Pass, fail or not applicable, with a note and a photo where it helps.
- Readings. Operating pressure and combustion readings have the unit locked in, so a number can never be read as the wrong unit.
- Gas supply and pipework. The tightness test and the rest of the supply checks.
- Next check due. Mucka suggests twelve months ahead. Change it if you need to.
- Sign it off. The engineer signs on screen. The customer can sign too, but they don't have to (a landlord record is often issued with nobody on site).
Everything saves as you go, so you can put your phone down mid job and pick up where you left off, even on a different device.
Approve and send
Tap Approve when it's done. Mucka shows you the outcome (pass, pass with defects, or fail) and asks you to confirm. Approving locks the certificate as a legal record and generates the PDF. After that it can't be edited, only corrected (see below).
Then tap Send. Mucka pre-fills the landlord or agent from the property and attaches the PDF. On a CP12 you can tick to send the tenant a copy too. Check the message, then send.
Need to fix an approved cert?
You can't edit a locked certificate, but you can create a correction. That copies it into a fresh draft with a new serial number; once you approve the correction, the original is marked superseded and its PDF carries a "superseded" watermark. The original is never deleted, so your trail stays intact.
Renewal reminders
When an approved certificate gets within about four weeks of its next-due date, Mucka raises a renewal card in your Action Required area: "the CP12 at 14 Acacia Avenue is due on 3 July, book them back in?". Tap to approve and Mucka sends the client a friendly re-booking reminder (you can edit the message first, and nothing goes out until you approve it). It's the easy way to keep the recurring work coming back.
You can also ask Mucka any time:
"Which gas certificates are due for renewal soon?"
Ask Mucka
You can ask Mucka to get one started for you:
"Start a CP12 for the boiler service at 14 Acacia Avenue."
Mucka opens the draft and links it up, but it never approves or sends a certificate on its own. Filling in the checks, approving and sending are always your call.