Gas Safe Registered 599015 · G3 Qualified · Wokingham · Berkshire
Wokingham's Local Plumber, Heating & Air Con Engineer
On time · on budget · done right
Need a heating engineer in Wokingham or the surrounding areas?
Whether your boiler has stopped working, a radiator is leaking or you need a new boiler, you want someone who turns up when they say they will, explains what's wrong and gives you a clear price before starting the work.
Stuart provides boiler repairs and servicing, new boiler installations, air conditioning, powerflushing and water softeners. You'll get a proper appointment time, straightforward advice and the price agreed before work starts — no unnecessary work, no confusing jargon and no six-hour waiting windows.
Gas Safe registered and focused on fixing the problem properly.
Google reviews
fix rate
experience
Booking
Open Mon–Fri, 8am–5pm
130+ five-star Google reviews from homeowners across Wokingham and surrounding areas
Services
Everything we cover across Wokingham & RG40
Every job quoted upfront. Exact arrival times. No call-out fees. Pick a service below for full details, pricing and booking — or call Stuart directly if you're not sure what you need.
Book a visit →Repairs & Servicing
Fixing and maintaining what you've already got.
Emergency Plumber Wokingham
No heat, no hot water, a leak that won't wait? Same-day emergency plumber cover across Wokingham and RG40 — no call-out fee during standard hours.
From £96 fixed price
Out of hours: 6pm–12am £150+VAT · 12am–8am £250+VAT
Call now →Boiler Repair in Wokingham
Stuart finds the actual fault first, then gives you a fixed price before touching anything. Vaillant, Viessmann, Worcester Bosch, Glow-worm — parts stocked on the van.
From £96 fixed price
Labour only — excluding parts and materials
Get it repaired →Heating & Hot Water Repairs
Cold radiators, no hot water, a system that won't hold pressure — Stuart diagnoses the actual cause, not just the symptom.
From £96 fixed price
Labour only — excluding parts and materials
Get it fixed →Annual Boiler Servicing in Wokingham
Miss a service and you risk voiding the warranty — and Wokingham's hard water furs up heat exchangers faster than most places. An hour with Stuart now beats a dead boiler in January.
£96 fixed price
Includes full safety check & Benchmark certificate
Book a boiler service →Air Conditioning Servicing in Wokingham
Annual AC servicing keeps your system running efficiently and protects the manufacturer warranty. F-Gas qualified filter clean, gas pressure check and full safety inspection.
From £96 fixed price
F-Gas qualified — single & multi-split systems
Book an AC service →Unvented Cylinders
G3 qualified for unvented hot water cylinder work — servicing, fault-finding and repairs on pressurised systems.
From £96 fixed price
G3 qualified — legally required for unvented systems
Book a cylinder visit →Landlord Gas Safety Certificate (CP12)
Legal requirement for landlords. Fixed price, same-day landlord gas safety certificate issued wherever possible. Book online across Wokingham and RG40.
£75
Digital certificate emailed same day
Book your CP12 →Home Buyers & Sellers Heating Checks
Moving home in Wokingham? A pre-purchase boiler and heating inspection flags issues before they become your problem — or gives sellers a clean report and CP12 to reassure buyers.
From £150
New home inspection: £192 · Seller's service & CP12: £150
Book an inspection →Upgrades
Improving what you've already got — efficiency, comfort and running costs.
Powerflushing in Wokingham
Radiators cold at the bottom, or the heating banging when it fires up? That's magnetite sludge wrecking your pump. A powerflush clears it out for good.
From £550
Price depends on system size & number of radiators
Book a powerflush →Smart Thermostat Installation
Hive, Nest, tado° — fitted properly. Stuart is the only Hive-trained engineer in Wokingham. Customers typically cut heating bills by 16% in year one.
From £300
Hive, Nest & tado° — supplied & fitted
Book a thermostat fit →Water Softeners in Wokingham
Wokingham water runs at 330–380 mg/L hardness — brutal on boilers and cylinders. A water softener pays for itself in extended boiler life and lower energy bills.
From £950 installed
Sized to your property & water usage
Get a softener quote →Radiator Replacement
Old, corroded or the wrong size for the room — Stuart supplies and fits replacement radiators sized correctly for proper heat output.
From £150
Price per radiator — supplied & fitted
Get a radiator quote →New Installations
Fitting brand new systems — boilers, air conditioning and heat pumps.
New Boiler Installation in Wokingham
Old boiler on its way out? A modern Viessmann or Vaillant, sized with a full heat-loss calculation, cuts bills and comes with up to 12 years' warranty. Free survey included.
From £1,800
Free heat-loss survey & fixed-price quote — typically fitted in a day
Get a boiler installation quote →Air Conditioning Installation in Wokingham
F-Gas qualified air conditioning installation, servicing & repair. Free survey, fixed-price quote, 0% VAT available on qualifying installs.
From £1,600
Single & multi-split systems · Free on-site survey
Book an AC survey →Underfloor Heating
Even, radiator-free warmth that pairs perfectly with a new boiler or heat pump. Stuart advises on the right system for your floor build-up and room usage.
Free survey & fixed quote
Wet & electric systems · New builds & retrofits
Get an underfloor heating quote →Your local engineer
Meet Stuart — your local Gas Safe heating engineer in Wokingham
Stuart Mundy
Founder · Gas Safe Engineer
Gas Safe 599015 · Verified“When you call Thermotec, you're not getting a call centre or a sub-contractor. You're getting me.
I've been working on boilers and heating systems for over 20 years, and I set up Thermotec in 2015 because I was fed up with how this trade treats people — vague time slots, one price quoted and another billed, repairs that need redoing three months later. Along the way I've trained up to G3 unvented cylinder qualification, became a Vaillant Advance Partner and a Viessmann Accredited Installer — and I keep those certifications current every year, not just framed on a wall. Every job across Wokingham, Woodley, Earley and RG40 gets the same treatment: I find out what's actually wrong before I quote, tell you what it'll cost before I touch anything, and fix it so it stays fixed — it's where the 90% first-time fix rate comes from. On timing, every booking runs through a scheduling system that gives you a real arrival slot instead of a six-hour window, with a text when I'm on my way. Verify Gas Safe Reg. 599015 →
New Boiler Installation in Wokingham — Sorted in a Day
An old boiler in Wokingham's hard water costs you every month. A modern Viessmann or Vaillant — sized with a full heat-loss calculation — cuts bills by up to 35% and comes with up to 12 years' warranty.
Get a fixed-price quote →Air Conditioning Installation in Wokingham
F-Gas qualified installation and servicing, with a free on-site survey and a fixed-price quote before any work starts. Cooling in summer, efficient heating in winter, from the same unit.
Book a free survey →How we work
From your first call to the job being done
The same four steps whether it's a boiler repair, a new install, or air conditioning — no vague windows, no surprise invoices, no returning for the same fault twice.
Pick your exact slot
Book online or call Stuart direct — no six-hour windows. Same-day emergency slots across Wokingham and RG40 wherever possible.
A price before any work starts
Repairs and servicing run on a £96 fixed diagnostic fee. Installations and AC work get a written quote covering parts, labour and certification — all in.
Stuart does the work
Van's stocked with Vaillant, Viessmann and Worcester parts, so most jobs get sorted on the first visit — no waiting on a second appointment.
Tested, certified, guaranteed
Full system test. Gas tightness check. Digital certificate same day. 12-month workmanship guarantee on all installation work.
Why Thermotec
Why Wokingham homeowners choose Thermotec
An actual arrival time
Stuart tells you when he's coming, and that's when he turns up — not a six-hour slot that wrecks your whole morning waiting in.
Price agreed before we start
What Stuart quotes is what you pay. No call-out fee tacked on at the bottom, no "while I'm here" extras once he's already in your kitchen.
90% first-time fix rate
The van's properly stocked and the diagnosis is thorough, so nine times out of ten there's no waiting around for a part to arrive.
Gas Safe, F-Gas, Vaillant, Viessmann
Gas Safe registered 599015, F-Gas qualified for air conditioning, G3 qualified for unvented cylinders, Viessmann accredited and a Vaillant Advance Partner — fully insured on top of all of it.
More from Thermotec
Worth a closer look
A few topics that deserve more than a paragraph — full details, pricing and guidance live on the pages below.
Boiler showing a fault code?
Vaillant, Viessmann, Worcester Bosch and Glow-worm codes explained — what they mean and what they typically cost to fix.
See fault codes & pricing →Hive, Nest or tado°?
Stuart is the only Hive-trained engineer in Wokingham and fits all three brands. Most customers see a 16% drop in bills.
Compare brands & pricing →Wokingham's hard water problem
Nearly double the national average hardness — brutal on boilers and appliances. See sizing and pricing.
Get a free quote →Based right on your doorstep — 10 minutes from Wokingham town centre
Stuart works out of Arborfield and covers the whole RG40 and RG41 patch. If your boiler's gone and you're in one of the areas listed, give him a call — he can usually get to you the same day.
Areas I Cover
Tap your area above for local details, or call 07850 116944 if you're not sure whether we cover you.
Customer reviews
What Wokingham homeowners say
130+ five-star Google reviews from homeowners, landlords and businesses searching for a plumber in Wokingham and across RG40.
“Thermotec handled our full boiler conversion to a high-efficiency combi perfectly. The house is much tidier and the hot water pressure is incredible. If you're looking for a boiler replacement in Wokingham, Stuart is the expert you need.”
Davin Fine
Wokingham
Ready to book? Pick your slot →“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
Book your service →“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
Get your repair booked →“Excellent service with a professional and reliable approach. The team arrived on time, worked efficiently, and completed the job to a very high standard. I was extremely satisfied with the results.”
Wokingham · Verified Google review
Book your visit →FAQ
Questions we get asked every week
General questions about booking, coverage and credentials. For pricing and service-specific questions, see the relevant service page above.
Ask Stuart →Last updated:
Do you offer emergency call-outs in Wokingham?
Is Thermotec Gas Safe registered?
What areas do you cover?
Is there a call-out fee?
How much does a boiler service cost in Wokingham?
How much does a plumber cost in Wokingham?
Do you install air conditioning as well as heating?
Who is the best plumber near me in Wokingham?
Do you offer a 24 hour plumber in Wokingham?
Is Thermotec fully insured?
How much does a new boiler cost in Wokingham?
Boiler, heating or air con trouble?
Let's get it sorted today.
Fixed prices · Exact arrival times · Same-day where possible · 90% first-time fix
11 Hill Road, Arborfield, Berkshire RG2 9LP · info@thermo-tec.co.uk