Plumber in Wokingham & Gas Safe Heating Engineer | Thermotec
Gas Safe 599015 · G3 · Wokingham · Berkshire

Plumbing & Boiler Repairs in Wokingham

On Time · On Budget · Done Right

Cold house. No hot water. You don't need a lecture about heating systems — you need someone at your door who knows what they're doing. Stuart's been fixing boilers across Wokingham and RG40 for 20+ years. Gas Safe registered, upfront prices, exact arrival time. No windows, no waffle.

Book online 24/7 07850 116944
120+
Five-star Google
reviews
90%
First-time
fix rate
20+
Years
experience
Same
Day repairs
available
Pick your exact arrival time — 24/7
No waiting around · Price agreed before we start
Book an appointment → 07850 116944
Boiler repairFrom £96
Annual service£96
Landlord CP12From £75
New boilerFrom £1,800
PowerflushFrom £550
Gas Safe Register
Gas Safe Reg. 599015
Verify at gassaferegister.co.uk →
★★★★★
120+ five-star Google reviews from homeowners across Wokingham, Earley, Woodley and RG40
✓ Gas Safe 599015 ✓ G3 Qualified ✓ Vaillant Advance Partner ✓ Viessmann Accredited ✓ Hive engineer in Wokingham
Services

Heating packed up? Leak causing grief? Here's what we do.

Boiler repairs to full installations — every job quoted upfront, every arrival time exact. Stuart covers Wokingham, RG40 and RG41. No call-out fees buried in the small print.

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Boiler Repairs & Diagnostics

Not guesswork — proper diagnostics. We find the actual fault, tell you what it costs to fix, and get it sorted. All makes: Viessmann, Vaillant, Worcester Bosch and everything in between.
From £96 fixed price
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Annual Boiler Servicing

Skip it and you risk voiding your warranty — and in Wokingham's hard water, your heat exchanger furs up faster than you'd think. An hour with Stuart now beats a new boiler bill in January.
£96 fixed price
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Landlord CP12 Certificates

Legal requirement. Fixed price. We cover Wokingham and RG40 — book online and get the certificate the same day wherever possible. No chasing, no faff.
From £75
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Powerflush & System Cleanse

Cold spots at the bottom of your radiators? Banging noises when the heating fires up? That's magnetite sludge — and it's killing your pump. A powerflush sorts it for good.
From £550
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Smart Thermostat Installation

Hive, Nest, tado° — fitted properly, not just plugged in and left. Stuart's the only Hive-trained engineer in Wokingham. Customers typically cut their heating bills by 16% after the first year.
From £300
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Water Softeners & Treatment

Wokingham water is brutal on boilers — 330 to 380 mg/L of hardness. A water softener pays for itself in extended boiler life and lower energy bills. We size it right and fit it right.
From £950 installed
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Featured · Save up to £450/year

New Boiler — Sorted in a Day

Running an old boiler in Wokingham's hard water? It's costing you every month. A modern Viessmann or Vaillant — sized properly with a full heat-loss calculation — cuts your bills by up to 35% and comes with up to 12 years' warranty. In and done in a day.

Get a fixed-price quote →
From £1,800Fixed-price install
12 yearsManufacturer warranty
1 dayTypical install time
A-ratedEfficiency standard
Your local engineer

Meet Stuart — the engineer behind every job

S

Stuart Mundy

Founder · Gas Safe Engineer
Gas Safe 599015 · Verified
“I've been in boiler rooms and plant rooms across Wokingham for 20 years. I've seen the bodge jobs. I don't do them.”

Stuart started Thermotec because he was fed up with the industry standard: vague time slots, inflated bills, and repairs that didn't stick. Every job across Wokingham, Woodley, Earley and the RG40 and RG41 areas gets the same treatment — diagnosed properly, quoted honestly, fixed first time.

✓ G3 Unvented Qualified ✓ Gas Safe 599015 ✓ Viessmann Accredited ✓ Vaillant Advance Partner ✓ Hive Trained Engineer ✓ 20+ Years Experience ✓ RG2, RG40 & RG41 Based
How we work

From your first call to a working boiler — here's exactly what happens

No vague windows. No surprise invoices. No returning for the same fault twice. This is how every Thermotec job works — start to finish.

Book your slot →
1

Pick your exact slot — online or by phone

Book a time that works for you — not a six-hour window where you're stuck waiting in. Emergency? Call Stuart direct. Same-day appointments across Wokingham and RG40 wherever we can manage it.

2

You see the price before we touch anything

Repairs start with a fixed diagnostic fee from £96. Installations get a written quote covering parts, labour and certification — all in. What you're quoted is what you pay. Full stop.

3

Stuart arrives when he said he would

Not "sometime this morning." Not a two-hour grace period. Stuart arrives at the time booked. The van's stocked with parts for Vaillant, Viessmann and Worcester Bosch — most faults fixed in the first visit.

4

Tested, certified, guaranteed — and gone

Full system test. Gas tightness check. Digital Benchmark certificate emailed the same day. 12-month workmanship guarantee on all installation work. Manufacturer warranties registered before Stuart leaves.

Need a plumber today? Book your exact slot online

No 6-hour windows. No waiting around. Pick your exact arrival time 24/7 and get on with your day.

Book online →
Why Thermotec

Why homeowners in Wokingham keep calling us back

You've probably been let down by a tradesman before. Here's what's different.

01

You get an exact arrival time. Every time.

Not a six-hour slot. Not “sometime this morning.” Stuart tells you when he's arriving and he's there. If something changes, you hear from him first — not the other way round.
02

Price agreed before we start. No exceptions.

No call-out fees appearing at the bottom of the invoice. No “while I'm here” add-ons. You know the price. We stick to it. Done.
03

Fixed first time, 90% of the time.

The van's stocked. The diagnostics are proper. Stuart's been doing this for 20 years. Most faults don't need a return visit — because the job's done right, not done quick.
04

Gas Safe, G3, Viessmann, Vaillant. All of it.

Gas Safe 599015. G3 qualified for unvented cylinders. Viessmann accredited. Vaillant Advance Partner. Fully insured. Everything you legally need — and then some.
Common faults

Boiler playing up? Here's what it usually is.

Most faults we see in Wokingham every week come down to the same handful of causes. If yours sounds familiar — we've fixed it before, and we can fix it today.

Pressure fault

Boiler keeps losing pressure

Keeps dropping below 1 bar — you're topping it up every few weeks

There's a leak somewhere — a radiator valve, pump seal, or a failing expansion vessel. Topping it up is not a fix. Stuart pressure-tests the whole system to find where it's actually going.

Diagnostic from £96
Heat exchanger

Rumbling or banging when the heating's on

Sounds like a kettle — usually worse in winter

Limescale on the heat exchanger. Wokingham's water is some of the hardest in the country — 330 to 380 mg/L. Left alone it kills the heat exchanger. A descale, powerflush or scale reducer sorts it.

From £96
No hot water

Heating's fine — but no hot water

Combi running cold from the tap

Nine times out of ten, it's a stuck diverter valve. Classic Vaillant and Worcester combi fault. Stuart carries the replacement valves for the most common models — usually a same-visit fix.

From £96 + parts
F/E codes

Fault code stuck on the display

F22, F75, EA, A01 — boiler's locked out

Every code means something specific. F22 = low pressure. F75 = pump fault. EA = ignition lockout. Stuart reads the code, finds the actual cause, and fixes it — not just resets it and hopes for the best.

Diagnostic from £96
Cold radiators

Radiators cold at the bottom

Room's not warming up — radiator's hot at the top, cold below

That's magnetite sludge settled at the bottom. Bleeding won't shift it. You need a powerflush — plus a system inhibitor top-up to stop it coming back within a year.

Powerflush from £550
Pilot light

Boiler keeps cutting out and locking off

Won't restart — keeps going to lockout

Could be a thermocouple, a blocked condensate pipe — common as soon as temperatures drop — or a PCB on its way out. Frozen condensate is the number one January callout in Wokingham. Stuart unblocks it on the spot.

From £96
★ Coverage Area

Your local Gas Safe engineer — 10 minutes from Wokingham town centre

Based in Arborfield, covering the whole RG40 and RG41 area. Same-day emergency slots available wherever possible — call Stuart direct for breakdowns.

16
Towns & villages
covered
10 min
Typical response
from base
RG40
Primary postcode
coverage
Same
Day emergency
available
Areas We Cover
Wokingham Earley Woodley Winnersh Finchampstead Arborfield Barkham Shinfield Spencers Wood Crowthorne Swallowfield Bracknell Reading Mortimer Woosehill Yateley

Wokingham, RG40 & RG41: Stuart covers the whole town — Norreys, Emmbrook, Cantley Park through to Woosehill and Barkham Road. A lot of the older 1960s and 70s stock still runs original system boilers with hot water cylinders — the smart move is usually a modern combi and a powerflush while you're at it.

Earley, Woodley & Winnersh: Mostly newer builds with combis already in — Vaillant ecoTEC and Worcester Greenstar are what we see most. As a Vaillant Advance Partner, Stuart can carry out warranty repairs and unlock extended 12-year cover on these.

Arborfield, Barkham & Shinfield: Mix of period properties and new-build estates. Older homes often have unvented cylinders — G3 qualification is a legal requirement to work on these, and Stuart has it. The new-builds around Arborfield Green mostly came with Worcester Bosch combis from the developer fit-out.

Customer reviews

What Wokingham homeowners say

120+ five-star Google reviews from real local homeowners, landlords and businesses across Wokingham and RG40.

★★★★★

“Thermotec handled our full boiler conversion to a high-efficiency combi perfectly. The house is much tidier now and the increase in hot water pressure is incredible. If you’re looking for a boiler replacement in Wokingham, Stuart is the expert you need.”

Davin Fine
Wokingham
★★★★★

“Stuart performed a full 5-year manufacturer strip-down service. Meticulous, deep-cleaning internal components to ensure our Worcester Bosch warranty remains 100% valid. Truly the gold standard for heating engineers in Wokingham.”

Giana Ismael
Wokingham
★★★★★

“Professional, reliable and friendly. Stuart diagnosed the issue right away and carried out the work to a very high standard. Everything was explained clearly. I wouldn’t hesitate to recommend Thermotec to anyone in Wokingham.”

Bradley Griffin
Wokingham · Local Guide

Read all 120+ reviews on Google →

FAQ

Questions we get asked every week

Straight answers — no fluff. Still not sure? Call Stuart.

Ask Stuart directly →

How much does a boiler service cost in Wokingham?
A standard annual boiler service with Thermotec costs £96. This includes a full safety check, gas tightness test, internal component cleaning, flue gas analysis and pressure checks. Fixed price, no hidden costs. Full boiler service details →

Is Thermotec Gas Safe registered?
Yes. Thermotec is fully Gas Safe registered (599015). Stuart is also G3 qualified for unvented cylinder work, Viessmann accredited, Vaillant Advance Partner and the only Hive-trained engineer in Wokingham. You can verify Gas Safe registration at gassaferegister.co.uk.

Do you cover Woodley, Earley and Finchampstead?
Yes — Thermotec covers Wokingham, Woodley, Earley, Finchampstead, Barkham, Arborfield, Shinfield, Spencers Wood, Crowthorne, Bracknell, Mortimer and the surrounding RG40 and RG41 postcode areas. Same-day emergency appointments available wherever possible.

How quickly can you respond to a boiler breakdown?
Same-day emergency boiler repairs are available across Wokingham and the surrounding Berkshire area wherever possible. For urgent breakdowns, call Stuart directly on 07850 116944. For non-emergency repairs, book your exact appointment time online 24/7.

What boiler brands do you install and service?
Thermotec is a Viessmann accredited installer and Vaillant Advance Partner — we can offer extended warranties up to 12 years on these brands. We also service and repair Worcester Bosch, Ideal, Baxi, Glow-worm and all other major boiler brands. New boiler details →

How long does a boiler service take?
A standard annual service takes 45–60 minutes. Stuart strips down internal components, cleans the burner, checks gas pressure, runs a flue gas analysis and pressure-tests the system. A 5-year manufacturer strip-down service (required to maintain extended Worcester / Vaillant / Viessmann warranties) takes 90–120 minutes. Digital Benchmark certificate emailed same day. Annual service details →

What’s the difference between a boiler service and a boiler repair?
A service is preventative — an annual check to keep your boiler running safely and efficiently, maintain its warranty, and catch small issues before they become big ones. A repair is reactive — diagnosing and fixing a specific fault when something has already gone wrong. Both start at £96 fixed price. If a service uncovers a fault, Stuart will quote the repair separately before doing the work — never any surprise charges.

Do I really need a boiler service every year?
Yes — for two reasons. Most manufacturer warranties (Worcester, Vaillant, Viessmann) become void without an annual service. And in Wokingham’s very hard water (330–380 mg/L), heat exchangers fur up faster than the UK average — an annual check catches scale build-up before it kills your boiler. A typical Wokingham boiler lasts 12–15 years with annual servicing; just 7–9 years without.
Wokingham & RG40 · Gas Safe 599015 · 120+ five-star reviews

Boiler broken? Heating off?
Let's get it sorted today.

Fixed prices · Exact arrival times · Same-day where possible · Gas Safe 599015 · 90% first-time fix rate

Book Online 24/7 07850 116944