Gas Safe 599015 · G3 · Wokingham · Berkshire

Plumber in Wokingham& Gas Safe Heating Engineer

On Time · On Budget · Done Right

Thermotec provides expert heating and plumbing in Wokingham with a focus on reliability. We’ve replaced waiting windows with exact arrival times and fixed upfront pricing. Gas Safe registered and local to Wokingham, we deliver expert boiler repairs and installations you can trust.

Book online 24/7 07850 116944
120+
Five-star Google
reviews
90%
First-time
fix rate
20+
Years
experience
Same
Day repairs
available
Book online 24/7 — pick your exact time
No appointment windows · Fixed Prices
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

Everything for your home heating & plumbing

From emergency callouts to planned installations — expert work, transparent pricing and exact arrival times across RG40, RG41 and surrounding Berkshire.

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Boiler Repairs & Diagnostics

Advanced diagnostics to find the exact fault — not guesswork. All makes and models including Viessmann, Vaillant and Worcester Bosch.
From £96 fixed price
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Annual Boiler Servicing

Protect your manufacturer warranty, lower energy bills and keep your family safe. Full digital service record provided.
£96 fixed price
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Landlord CP12 Certificates

Annual gas safety certificates for landlords across Wokingham and RG40. Fixed price, same-day where available.
From £75
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Powerflush & System Cleansing

Remove magnetite sludge, restore radiator heat and protect your pump and heat exchanger. Cold spots? Kettling noises? We fix it.
From £550
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Smart Thermostat Installation

Hive, Nest and tado° experts. Only Hive-trained engineer in Wokingham. Cut energy bills by up to 16% annually.
From £300
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Water Softeners & Treatment

Hard water solutions for Berkshire homes. Water softeners, conditioners and limescale protection — protect your boiler, pipes and appliances from scale damage.
From £950 installed
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Featured · Save up to £450/year

New Boiler Installations

Viessmann and Vaillant specialists with full heat-loss calculations and up to 12-year manufacturer warranty. Cleaner, quieter, up to 35% more efficient than a 10-year-old boiler.

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 — Wokingham’s Gas Safe heating expert

S

Stuart Mundy

Founder · Gas Safe Engineer
Gas Safe 599015 · Verified
“Treat every home like your own. That’s been the rule since day one.”

With over 20 years of hands-on experience across Wokingham, Woodley, Earley and the surrounding RG40 and RG41 areas, Stuart built Thermotec to deliver specialist expertise with the personal service of a local engineer who genuinely cares about getting it right 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

Booking to boiler running — in 4 steps

No vague time slots, no awkward sales calls, no hidden charges. Every Thermotec job follows the same transparent process — from your first booking to a fully tested, fully working system.

Book your slot →
1

Book your exact slot online

Pick a date and time that suits you — not a 6-hour window. Or call Stuart directly for emergencies. Same-day appointments available across Wokingham and RG40 wherever possible.

2

Fixed-price quote upfront

For repairs, you get a fixed diagnostic fee from £96. For installations, Stuart provides a written quote with all parts, labour and certification included. No surprises on the invoice.

3

On-time arrival, expert work

Stuart arrives at the time booked — not before, not after. He carries a stocked van with parts for Vaillant, Viessmann and Worcester Bosch, plus all major brands. Most repairs fixed first visit.

4

Tested, certified, guaranteed

Full system test, gas tightness check and digital Benchmark certificate where applicable. 12-month workmanship guarantee on all installations. Manufacturer warranties registered same day.

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

Plumbing & heating done properly

We know you’ve been let down before. Here’s what makes us different.

01

Exact arrival times — every time

Not a 6-hour window. Not “sometime this morning.” We tell you exactly when Stuart is arriving and we stick to it. Your time matters.
02

Upfront, fixed-price quotes

You know the price before we pick up a tool. No hidden call-out fees, no surprise labour charges, no inflated parts costs. Total transparency.
03

90% first-time fix rate

We carry the right parts, use advanced diagnostic equipment and have the experience to get it right first time. No return visits for the same fault.
04

Fully Gas Safe registered

Gas Safe 599015. G3 qualified. Viessmann accredited. Vaillant Advance Partner. Fully insured. Your home, your family and your legal compliance are in safe hands.
Common faults

Boiler problems we fix every week in Wokingham

If your boiler’s making any of these noises, behaviours or fault codes — we’ve seen it before. Most are diagnosed and fixed in a single visit.

Pressure fault

Boiler losing pressure

Drops below 1 bar repeatedly

Usually a leak on a radiator valve, pump seal or expansion vessel failure. Stuart pressure-tests the whole system to find the exact source — not just top up and hope.

Diagnostic from £96
Heat exchanger

Kettling or banging noises

Loud rumble when heating runs

Limescale build-up on the heat exchanger — common in Wokingham’s 330–380 mg/L hard water. Powerflush, descale or fit a scale reducer to fix it long-term.

From £96
No hot water

Heating works, hot water doesn’t

Combi boiler — cold tap output

Usually the diverter valve is stuck. Common Vaillant and Worcester combi fault — Stuart carries replacement valves for the most common models, often a same-visit fix.

From £96 + parts
F/E codes

Fault code on display

F22, F75, EA, A01 etc.

Each code means something specific. F22 = low pressure. F75 = pump fault. EA = ignition lockout. Stuart decodes the fault and explains what’s actually wrong — not just resets it.

Diagnostic from £96
Cold radiators

Cold spots on radiators

Cold at bottom or top

Cold at bottom = magnetite sludge. Cold at top = trapped air. Sludge needs a powerflush; air needs bleeding plus a system inhibitor top-up to stop it returning.

Powerflush from £550
Pilot light

Boiler keeps cutting out

Lockout, won’t restart

Often a faulty thermocouple, blocked condensate pipe (winter), or PCB fault. Frozen condensate is the #1 January callout in Wokingham — Stuart fixes it on the spot.

From £96
★ Coverage Area

Your local plumber & Gas Safe engineer

Based in Arborfield — 10 minutes from Wokingham town centre. Fast response across the whole RG40 and RG41 postcode area, with same-day emergency appointments where possible.

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 — from Norreys and Emmbrook in the north through Cantley Park and the town centre down to Woosehill and Barkham Road. Older 1960s and 70s housing stock here often runs original system boilers with hot water cylinders — common upgrade is to a modern combi with a powerflush.

Earley, Woodley & Winnersh: Mostly newer builds with combis already fitted — Vaillant ecoTEC and Worcester Greenstar are the dominant brands. Stuart’s a Vaillant Advance Partner, so warranty repairs and 12-year extended cover are available on these.

Arborfield, Barkham & Shinfield: Mix of period properties and new-build estates. Older homes often have unvented cylinders requiring G3-qualified service work — Stuart’s G3 qualified, so safe to work on these by law. New-build estates around Arborfield Green typically have Worcester Bosch combis from developer fit-outs.

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

Frequently asked questions

Quick answers to the questions Wokingham homeowners ask most. Can't find what you need? Give Stuart a call.

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

Need a plumber or engineer
in Wokingham today?

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

Book Online 24/7 07850 116944