Plumbing & heating in Birmingham, sorted.
Boiler services, emergency call-outs and full installs — real prices shown upfront, booked online in under a minute.
Covering Birmingham & the West Midlands
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Why choose us
Boiler playing up?
Book a service or repair in under a minute — pick the slot that suits you and see the full price before you pay a penny.
No mystery pricing
Every job shows its real price upfront. The price you book is the price you pay, and your deposit is protected until the work is done.
Emergencies can't wait
A burst pipe doesn't wait for a call-back. Our emergency call-out can be booked online day or night.
How it works
Pick your service
Boiler service, repair, install or emergency call-out — each with its real price shown.
Choose a time
See the live diary and grab the slot that fits around your day.
We do the rest
An engineer arrives with the job details already in hand, and you get updates along the way.
Our Services

Boiler Service
A Gas Safe registered engineer checks your boiler's safety and efficiency, testing the components that keep it running properly and catching small issues before they become breakdowns. An annual service is usually what keeps your manufacturer's warranty valid, so skipping it can cost you more than the service itself. Nothing extra is added to the job unless something's found, and you'll always be told first.

Landlord Gas Safety Certificate (CP12)
We inspect every gas appliance in the property and issue your CP12 certificate the same day, ready for your records or your letting agent. This certificate is a legal requirement for landlords, renewed every 12 months, so having it current protects you as well as your tenants. If anything fails the inspection, we'll explain what's needed and quote it separately before any repair work starts.

Boiler Repair
We diagnose the fault properly, explain in plain terms what's actually wrong with your boiler, and quote any parts before fitting them. Knowing the real cause before you commit to spending means you're not paying to guess. No parts are fitted and no further work is done until you've agreed the price.

Emergency Call-Out
We prioritise burst pipes, major leaks and no-heating emergencies and get an engineer to you as quickly as we can. Acting fast on a burst pipe or major leak is what limits water damage to floors, ceilings and belongings. The call-out price is the call-out price, agreed with you before the engineer sets off, with no surprise charge added on top once they're at the door.

Tap & Valve Replacement
We replace the faulty tap or isolation valve in your kitchen or bathroom and test the connection afterwards to make sure there's no drip or leak. A worn isolation valve isn't just an inconvenience, it's often what stops a small job turning into an emergency later on. We fit like-for-like wherever we can, and if the pipework needs adapting we'll tell you before doing the extra work.

Drain Unblocking
We clear the blockage from sinks, showers or external drains using the right equipment for the job, then check the flow afterwards to confirm it's running clear. A slow or blocked drain left alone tends to back up further and can lead to overflow or damage. If the blockage turns out to be a bigger issue further down the line, we'll tell you and quote before taking it any further.

Leak Detection & Repair
We trace the source of the leak, including hidden leaks behind walls or under floors, and carry out the repair in the same visit wherever the job allows. Left untraced, a hidden leak can cause damp and structural damage long before it's ever seen. If the fix turns out to need more than expected, we'll explain that and agree it with you before doing anything further.

Radiator Replacement
We remove the old radiator, fit the new one, and rebalance the system afterwards so heat is distributed evenly across your home rather than pooling at one radiator. Skipping the rebalance is a common shortcut that leaves other rooms cold, so we don't skip it. If the existing valves or pipework need attention to make a clean fit, we'll flag it before doing any extra work.

Smart Thermostat Install
We fit the thermostat, wire it in to your existing heating system, and pair it to your phone before we leave, showing you how to use it. A properly configured smart thermostat means you can control your heating away from home, so you're not paying to heat an empty house. We check compatibility with your system before the visit, so there are no surprises on the day.

Unvented Cylinder Service
We carry out the annual service required for unvented hot water cylinders, checking the safety devices and controls that keep the system operating within safe limits. This check is carried out by a G3-qualified engineer, as it should be for any unvented cylinder. We only do what the service requires, nothing added on unless something needs your attention.

Power Flush
We flush the whole central heating system under pressure to clear out the sludge, rust and debris that build up in radiators and pipework over time. Left alone, that debris causes cold spots, noisy pumps and puts unnecessary strain on your boiler. If we find a fault while we're in the system, we'll tell you and quote it separately rather than adding it to the job on the spot.

Full Boiler Installation
We fit a new A-rated combi boiler sized properly for your home, remove and dispose of the old unit, and commission the new one so it's running efficiently from day one. A correctly sized, properly installed boiler keeps your manufacturer's warranty valid and avoids the short-cycling that wears a boiler out early. The price is agreed before we start, so what you're quoted is what you pay.

Bathroom Installation
This is the first day of the full refit: the old suite comes out, pipework and electrics get first-fixed, and the room is protected while the work happens around you. Getting this stage right is what stops leaks, movement and cracked tiling turning up months later. We agree the full scope with you before day one, so there's no creeping list of extras once the tools are out.
What customers say
Example reviews — illustrative demonstration data, not real customer feedback.
Gas certificate done without any fuss. Tidy work, no mess left behind.
Margaret A. · today
Arrived spot on time and the boiler is running perfectly. Best plumbers we have used in Birmingham in years.
Raj S. · today
Arrived spot on time and the boiler is running perfectly. Best plumbers we have used in Birmingham in years.
Yvonne B. · today
Decent work but arrived outside the given time window without a heads up.
Chloe K. · today
Fair price, no upselling, gone within the hour. Will use again.
Margaret A. · today
Diagnosed the fault fast - we were warm again by lunchtime. Impressed.
Derek P. · today
Diagnosed the fault fast - we were warm again by lunchtime. Impressed.
Duncan E. · today
Diagnosed the fault fast - we were warm again by lunchtime. Impressed.
Harold F. · today
Job got done in the end but I had to chase twice for an update on timing.
Gareth N. · today
Diagnosed the fault fast - we were warm again by lunchtime. Impressed.
Amelia W. · today
Brilliant emergency response - the burst pipe was sorted within the hour. Absolute lifesavers.
Bernard P. · today
Diagnosed the fault fast - we were warm again by lunchtime. Impressed.
Margaret A. · today
Frequently asked questions
Demo Plumbing & Heating Co. is OptiTech's demonstration business — all bookings, jobs and reviews shown are illustrative example data.