In the UK
30 sections, about 12,800 wordsRenewals and deadlines Greymill tracks
- Gas Safe registration renewalYearly
- Engineer ACS reassessmentEvery 5 years
- Competent person scheme renewal and assessmentYearly
- MCS and applicable consumer-protection renewalYearly
- F-gas company certificate renewalAt renewal
- Waste carrier registration renewalAt renewal
Figures Greymill knows, with their sources
- £7,500Boiler Upgrade Scheme grant towards an eligible air-source or ground-source heat pump, in England and Wales.As of Oct 2026. Source: gov.uk
- £9,000Temporary grant where an off-gas-grid home swaps oil or LPG for a heat pump, until 31 March 2027.As of Oct 2026. Source: gov.uk
- 20%CIS deduction a contractor takes from a subcontractor registered for net payment. Unregistered: 30%.As of Sep 2026. Source: gov.uk
Words of the trade it understands
- call-out
- first fix
- second fix
- landlord gas safety record
- annual check
- Gas Safe engineer
- competent person scheme
- EIC
Owners ask, for example
- A landlord wants the gas safety record done before a new tenant moves in. What do I hand over?
- My customer wants a heat pump instead of a new boiler. Can they get a grant?
Free lessons for the UK
- My diary is full but nothing is left over: what should my charge-out rate and call-out fee be?Your engineers are paid for every hour but you only bill some of them, so build the rate from the hours you sell, not the hours you pay.Read the lesson
- Busy all summer on installs, yet the bank account is emptiest when the diary is fullestBreakdowns pay on the day, but installs, heat pump vouchers and letting agents pay late, so plan cash by the week, not by the season.Read the lesson
- Which VAT rate goes on the invoice: heat pump, boiler, wet room or new build?The VAT rate depends on what you install, for whom and in what kind of building, and charging too little comes out of your own margin.Read the lesson
- Can my engineer legally take this job, and who has to notify it?Gas, electrical and water work each has its own gatekeeper, and a job is not finished until the right person has done it, signed it and notified it.Read the lesson
- I went out for a repair and sold a new boiler: can the customer cancel?A homeowner's cancellation right, the emergency exception and the call-out fee all turn on what you put in writing before you started.Read the lesson
- My engineers run their own vans and carry CIS cards, so they are self-employed, aren't they?Status, travel time, on-call, holiday pay and who may work on gas all follow how the work is really done, not what the paperwork says.Read the lesson
- Letting agents want me to take on their landlords' deadlines: how do I win the work safely?Landlord and agent work is won on reliability, so sell the diary, price the failed visit and keep the legal duty where it belongs.Read the lesson
- The appliance is dangerous, or the customer blames my repair for a flood: what do I do first?When a job turns dangerous or a customer blames you for damage, the order of your first steps and what you write down matter most.Read the lesson
In the US
29 sections, about 11,000 wordsWhat it covers
- Licensing: plumbing, gas and electrical in TX, CA, FL and NY
- Codes, permits, backflow and lead-free rules
- Water heaters, heat pumps, refrigerant, EV and solar
- Home improvement contracts, cancellation and collections
- Memberships, service contracts and financing
- Pay-if-paid, prompt payment, retainage and bonds
Renewals and deadlines Greymill tracks
- Plumbing, gas or electrical license renewalAt renewal
- Contractor bond renewalYearly
- Backflow tester certification renewalAt renewal
- GL, auto and workers' comp renewalYearly
Words of the trade it understands
- service call
- trip charge
- work order
- flat-rate price book
- options presentation
- rough-in
- trim-out
- permit
Owners ask, for example
- Do I need a permit to swap a water heater, and who pulls it?
- A homeowner has not paid for a repipe. Can I file a mechanics lien, and by when?
Free lessons for the US
- My flat-rate book came from a competitor: is it paying after drive time and callbacks?Flat-rate prices only work if the hourly rate inside them is built from the hours your techs actually sell, not the hours you pay.Read the lesson
- Service pays at the truck, warranty companies and GCs pay late: can I afford another truck?Service work pays on the spot, but installs, home warranty companies, property managers and commercial pay apps do not, so plan cash by the week and test any new loan against what is left.Read the lesson
- Do I charge sales tax on this repair? Why the same job is taxable in one state and not the nextWhether a plumbing or electrical job carries sales tax turns on the state and on whether it repairs or improves real property, and a wrong guess can build up for years.Read the lesson
- Who can pull the permit, and what happens if a helper runs the gas line?The license holder of record carries the work, so who does the job, who pulls the permit and who supervises decide whether you keep the license and can enforce the contract.Read the lesson
- How much can I take up front on a home job, and when can the customer cancel?Down payment limits, cancellation rights and required contract wording all change by state, and getting them wrong can mean refunds, misdemeanor charges or license discipline.Read the lesson
- I pay techs flat rate and helpers on 1099s: am I building up back pay?Flat-rate and commission pay, drive time, on-call and 1099 helpers are where shops in this trade build up back pay without noticing.Read the lesson
- Selling the replacement at the kitchen table: options, financing and what I can claimPresent replacements as clear priced options with honest financing, and know the rules on dealer fees, fear selling and reviews before you start.Read the lesson
- A customer says my work flooded their house months later: what do I do?When a leak or failure is blamed on your work, report it, keep the evidence and watch the deadline on any defect notice, or you can lose the right to fix it first.Read the lesson
Questions owners ask
Is there an AI for plumbing, heating and electrical?+
Yes. Greymill is an AI team for small businesses that is briefed on plumbing, heating and electrical, written separately for the UK and the US: 30 sections for the UK and 29 for the US, about 23,800 words of reviewed industry knowledge, as of Oct 2026.
Which renewals and deadlines does Greymill track for plumbing, heating and electrical in the UK?+
In the UK: Gas Safe registration renewal (yearly); Engineer ACS reassessment (every 5 years); Competent person scheme renewal and assessment (yearly); MCS and applicable consumer-protection renewal (yearly); F-gas company certificate renewal (at renewal); Waste carrier registration renewal (at renewal). As of Oct 2026.
Which renewals and deadlines does Greymill track for plumbing, heating and electrical in the US?+
In the US: Plumbing, gas or electrical license renewal (at renewal); Contractor bond renewal (yearly); Backflow tester certification renewal (at renewal); GL, auto and workers' comp renewal (yearly). As of Oct 2026.
Which figures does Greymill know for plumbing, heating and electrical in the UK?+
Boiler Upgrade Scheme grant towards an eligible air-source or ground-source heat pump, in England and Wales: £7,500 (gov.uk, as of Oct 2026). Temporary grant where an off-gas-grid home swaps oil or LPG for a heat pump, until 31 March 2027: £9,000 (gov.uk, as of Oct 2026). CIS deduction a contractor takes from a subcontractor registered for net payment. Unregistered: 30%: 20% (gov.uk, as of Sep 2026).
Does Greymill replace my accountant, solicitor or other professional advisers?+
No. Greymill gives you a whole team to think with every day: the numbers modelled, the contract read, the campaign planned, the hire prepared, the filing checklist ready, all before you speak to anyone by the hour. What Greymill produces is software output from the information you give it, so Greymill takes no instruction, owes no professional duty and files nothing unless you send it yourself. Where a matter needs a regulated professional to sign it off, Greymill says so and tells you exactly what to take to them. Customers arrive at their accountant or lawyer with the work done and the questions sharp, which is usually the cheapest hour they will ever buy.
How much does Greymill cost?+
Plans start at £100 a month plus VAT in the UK and $130 a month plus tax in the US. Every plan starts with a 7-day free trial on full Scale access, no card needed.
How Greymill helps
Tell Greymill about your business once. Its sixteen specialists share one memory of it, so the one you ask already knows your trade, your country and your numbers. Connect your books and inbox. Nothing is sent unless you press Send, and your books change only when you press Approve. Greymill files nothing unless you send it yourself and is not a regulated adviser: where a matter needs one, it says so and tells you what to take to them.
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