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News, seasons and straight talk.

The Manifold blog covers gas safety, running a gas engineering business, and the odd bit of Manifold news. For the evergreen how-tos, see the guides.

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A Worcester Bosch Greenstar 8000 Life combi boiler with its front casing removed, showing the heat exchanger and the control panel
For engineers25 July 2026

Worcester Greenstar servicing: what keeps the guarantee valid

Worcester makes the yearly service a condition of the guarantee. Here is what that means on the tools, and what to keep on record.

The Glow-worm Energy combi boiler, a compact white wall-mounted combi, shown from the front
For engineers24 July 2026

Glow-worm data plate: where the serial number and GC number are

One plate, underneath. Here is where Glow-worm puts the serial number and the GC number, and which fields you actually need for the record.

A Baxi 800 Combi 2 wall-mounted combi boiler
For engineers23 July 2026

Baxi data plate: where the serial number and GC number are

Baxi keeps it simple: the serial is behind the drop-down panel or on a pull-out tag. Here is where to look and what to record.

A Vaillant ecoTEC plus wall-mounted combi boiler
For engineers21 July 2026

Vaillant data plate: where the serial number and GC number are

Two plates, two places. Here is where Vaillant puts the serial number and the data plate, and which fields you actually need for the record.

Cutaway view of a Worcester Bosch Greenstar 4000 combi boiler showing its internal components
For engineers20 July 2026

Where is the GC number and data plate on a Worcester Bosch boiler?

The GC number, the model and the serial all live on one badge. Here is where it usually sits on a Greenstar, and how to read it for the record.

A Glow-worm Energy wall-mounted combi boiler
For engineers19 July 2026

Glow-worm Energy and Betacom4: which suits which home

The Energy is the range you fit today; the Betacom4 is the one you now service. Here is the short version, and what to read off the data plate before you quote.

A Baxi 600 Combi 2 wall-mounted combi boiler
For engineers16 July 2026

Baxi 800 vs 600 vs Assure: which suits which home

Baxi's three domestic tiers suit three different jobs. Here is the short version, and what to read off the data plate before you quote.

An Ideal Heating Logic Max wall-mounted combi boiler
For engineers15 July 2026

Ideal Logic vs Logic Max vs Vogue Max: which suits which home

Ideal's three domestic tiers suit three different jobs. Here is the short version, and what to read off the data plate before you quote.

A Vaillant ecoFit pure wall-mounted combi boiler
For engineers15 July 2026

Vaillant ecoFit pure vs ecoTEC plus vs exclusive: which suits which home

Vaillant's three domestic tiers suit three different jobs. Here is the short version, and what to read off the data plate before you quote.

Cutaway view of a Worcester Bosch Greenstar 2000 combi boiler showing its internal components
For engineers14 July 2026

Worcester Greenstar 2000 vs 4000 vs 8000: which suits which home

The three main Greenstar tiers suit three different homes. Here is the short version, and what to check on the data plate before you quote.

A wall-mounted gas boiler with a brass question mark, representing the question of whether gas boilers are being banned in the UK
For engineers9 July 2026

Are gas boilers being banned? What the 2026 rules actually say

The short version: no ban on your boiler. Here's what is actually changing, what got quietly dropped, and what to tell customers who've read the headlines.

A house with a brass letter C, representing the EPC C by 2030 energy target for rental properties under the MEES changes
Compliance9 July 2026

EPC C by 2030: what the MEES changes mean for landlords

The energy rules for rentals are firming up: EPC C by 2030 and a £10,000 cap. Here's the confirmed picture, minus the noise.

A boiler with a brass upward price arrow, representing the Clean Heat Market Mechanism boiler tax and rising boiler prices
For engineers9 July 2026

The Clean Heat Market Mechanism, explained for installers

You may have seen 'boiler tax' on an invoice. Here's what the Clean Heat Market Mechanism actually is, and who really pays.

A heat pump with a brass cog, representing what heat pumps mean for the gas engineer's trade
For engineers9 July 2026

Heat pumps and the gas engineer: threat, opportunity, or hype?

The heat pump debate runs hot. Here's a level-headed look at what it actually means for a gas engineer's business.

A carbon monoxide alarm with brass sound waves, representing CO alarm rules for landlords in England, Scotland and Wales
Compliance9 July 2026

Carbon monoxide alarm rules for landlords: the law, the signs, and what to tell tenants

The carbon monoxide alarm rules aren't the same across the UK. Here's what's required where, and the signs everyone should know.

A tablet showing a tax return with a brass pound sign, representing Making Tax Digital for gas engineers
For engineers9 July 2026

Making Tax Digital: what it means for self-employed gas engineers

Making Tax Digital has started for higher-earning sole traders, and the first quarterly deadline is 7 August. What it means and how to get ready.

A shield with a brass tick, representing tenant protections and gas safety under the Renters' Rights Act
Compliance9 July 2026

The Renters' Rights Act and gas safety: what changes, and what the penalties are now

The big rental shake-up is here. Your gas safety duty is unchanged, but the consequences of getting it wrong are sharper.

A house with a brass water droplet, representing damp and mould duties for private landlords under Awaab's Law
Compliance9 July 2026

Awaab's Law and private landlords: what's confirmed, what's coming

Awaab's Law is live for social housing. Here's what it means, and where private landlords actually stand right now.

A bar chart with a tall brass January bar, showing January as the peak month for UK boiler breakdowns
For engineers9 July 2026

Why January is the worst month for boiler breakdowns

The data backs up what every engineer already knows: January is peak breakdown season. Here's why, and how to beat it.

Stacked coins with a brass upward arrow, representing gas engineer day rates in 2026
For engineers9 July 2026

Gas engineer day rates in 2026: what to charge

What are gas engineers actually charging in 2026? The published numbers, the regional spread, and how to price your own day.

A qualification badge with a brass tick, representing Gas Safe registration and ACS renewal costs
For engineers9 July 2026

Gas Safe registration and ACS costs in 2026

The price of staying qualified, in plain numbers: this year's Gas Safe registration fee and what an ACS reassessment actually costs.

A house with a brass snowflake, representing a landlord's winter checklist for getting a rental property winter-ready
Compliance9 July 2026

Get your rental properties winter-ready: a landlord's checklist

A short autumn checklist so your rentals go into winter safe, warm and compliant, not scrambling in December.

A boiler condensate pipe with a brass snowflake, representing a frozen condensate pipe shutting down a boiler in winter
For engineers9 July 2026

Frozen condensate pipe: the winter call-out you can prevent

The first hard frost brings a wave of no-heat call-outs, and a lot of them are the same simple, preventable fault.

A clock with a brass back-arrow, a prompt to test heating, radiators and CO alarms when the clocks go back
Compliance9 July 2026

Clocks go back: a good prompt to test your heating and alarms

A ready-made twice-a-year reminder to check the heating before you need it, and test the alarms that keep you safe.

A lightbulb with a brass tick, representing busting common landlord gas safety myths
Compliance9 July 2026

Gas safety myths landlords still believe

Some gas safety myths are surprisingly sticky, and a few can land a landlord in real trouble. Here are the common ones, put straight.

A block of flats with a brass tick, representing portfolio gas compliance for a letting agent
Compliance9 July 2026

A quarterly gas compliance checklist for letting agents

Across a portfolio, gas compliance is a rhythm, not a one-off. A simple quarterly routine that keeps every property covered.

A house with a brass key, representing a new landlord's first 90 days of gas compliance
Compliance9 July 2026

New landlord? Your first 90 days of gas compliance

Becoming a landlord comes with a gas safety duty that starts before your first tenant moves in. A 90-day plan for getting it right from day one.

A phone showing a digital CP12 gas safety certificate with a brass tick, representing paper versus app records
For engineers9 July 2026

Paper vs app: an honest look at going digital for CP12s

A digital CP12 is just as valid as a paper one. The real question is whether going digital is worth it for how you work.

A house with a brass magnifying glass, representing checking a property's gas appliances before buying
Compliance9 July 2026

Buying a rental with gas appliances: what to check before you complete

A homebuyer survey won't tell you if the boiler's on its last legs. What to look at before you commit, especially if you're going to let it.

A cold radiator with a brass snowflake, representing a boiler breakdown and no heat at Christmas
For engineers9 July 2026

No heat at Christmas: how to prepare, and how to cope with the rush

The week between Christmas and New Year is peak no-heat season. A bit of prep saves everyone the worst of it.

A phone with signal bars and a brass sync symbol, representing an offline gas certificate app that syncs later
Product9 July 2026

Why we built Manifold offline-first

The loft, the basement, the cupboard under the stairs: half a gas engineer's day has no signal. Here's why we built for that first.

A dashboard window with a brass panel, representing a landlord portal for gas safety certificates
Product9 July 2026

Product notes: a portal where landlords and agents see their gas certificates

A tidy, self-serve view of a customer's properties, appliances and certificates, so the resend-that-certificate calls stop.

A flue gas analyser with a brass reading on its display, representing field notes on analyser printouts
For engineers9 July 2026

From the tools: three analyser readings that made me stop and recheck

The analyser printout isn't just paperwork. Three readings from the tools that were worth stopping and rechecking for.

An air-source heat pump unit with a brass pound sign, representing the £9,000 Boiler Upgrade Scheme heat pump grant
For engineers9 July 2026

The £9,000 heat pump grant: what it means for gas engineers

From 21 July, off-grid oil and LPG homes can get £9,000 towards a heat pump. Here's the detail, and what it means for engineers.

A sun with a brass tick, representing a gas engineer using the quiet summer season to get the business in order
For engineers9 July 2026

Use the summer lull to get your gas business in order

The quietest weeks of the year are the ones to spend on the business, not just in it. Six things to do before autumn.

A clipboard checklist with a brass tick, representing a mid-year landlord gas safety review
Compliance9 July 2026

The landlord's mid-year gas-safety review: a 15-minute audit

Fifteen minutes now saves a scramble later. A simple mid-year audit of your rental properties' gas safety.

Illustration of interconnected gas heating pipework and a manifold, in graphite and brass
Product8 July 2026

Manifold is now self-serve: start your free trial today

No more waiting for an invite. Start a free 30-day trial on your own jobs today, no card required.

Illustration of a shield containing a gas flame, representing Gas Safety Week
Compliance7 July 2026

Gas Safety Week 2026: a good prompt to get your renewals in order

The annual campaign is a useful nudge. Here's a five-minute way for landlords and engineers to use it.

Illustration of a wall-mounted boiler with copper pipes, a spanner and an autumn leaf, representing boiler service season
For engineers1 July 2026

Boiler service season is coming: get ahead of the autumn rush

The autumn rush is predictable, so it's beatable. How to spread the load before it hits.

Illustration of a calendar with one highlighted row marking the CP12 renewal window
Compliance24 June 2026

The renewal rule that stops your CP12 dates drifting

A quirk of the rules, used well, keeps your renewal dates fixed year after year. Here's how it works.

Illustration of a house cross-section showing a boiler, an air vent and a warning triangle, representing common landlord gas safety mistakes
Compliance17 June 2026

Five gas safety mistakes landlords make (and the fix for each)

The slip-ups are common and every one is avoidable. Here are five, with the fix for each.

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