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Watford: plumbing, heating and air-conditioning companies

Watford has 184 plumbing, heating and air-conditioning companies (SIC 43220) and 294 electrical and other installation companies registered here (Companies House, 1 Sep 2026); 0 are MCS-certified for air-to-air yet. If the office is in WD24, summer 2026 had ≈10 nights above 18 °C there (8 times the 1991–2020 average of 1.3).

SIC 43220

Open a company

A C SOLUTIONS GROUP LIMITED, incorporated 1982, status Active.

Plumbing, heating and air-conditioning companies

SIC 43220. A name links to the profile when the office nation is England, Wales or Scotland.
CompanyIncorporatedStatusDistrict
AGSM MAINTENANCE LIMITED 2014 Active WD17
HENCO HEATING LIMITED 2000 Active WD17
KEMPAIR LIMITED 2003 Active WD17
SAFE HOUSE MAINTENANCE SERVICES LIMITED 2019 Active WD17
WATERSIDE HEATING & PLUMBING LIMITED 2003 Active WD17
BERKSHIRE HEATING LTD 2025 Active WD17
GENESIS KEY CONSTRUCTION LTD 2022 Active WD18
ROSSER & RUSSELL MAINTENANCE LIMITED 1968 Active WD17
TODOSI PLUMBING LIMITED 2016 Active WD17
P A D PROPIPES SERVICES LIMITED 2025 Active WD17
SMART COVERS LTD 2025 Active WD17
D AND J K PLUMBING & HEATING LTD 2021 Active WD17
NICOL HEATING SERVICES LTD 2020 Active WD17
EVERSTEAD BUILDING SERVICES LTD 2026 Active WD17
TSQ BUILDING SERVICE LTD 2024 Active WD17
AS PLUMBING LTD 2015 Active WD17
WATFORD BOILER REPAIR LTD 2025 Active WD17
S & T PROPERTY CARE LTD 2005 Active WD17
MSMLR LTD 2026 Active WD17
LETY SERVICES LTD 2017 Active WD18
A&C SMART SERVICES LTD 2024 Active WD18
METEOR FIRE PROTECTION LTD 2026 Active WD24
BLUEPEAK DESIGN & BUILD LTD 2025 Active WD24
HOME COMFORT ASSURED LTD. 2013 Active WD18
NIS PLUMBING LIMITED 2023 Active WD24
DM HEATING & PLUMBING LIMITED 2016 Active WD18
CF ANALYTICS LTD 2025 Active WD18
EM PLUMBING AND HEAT LTD 2024 Active WD24
CLEAN NRG SOLUTIONS LTD 2025 Active WD18
HEATSAFE SOLUTIONS LTD 2020 Active WD18
SWITCH TECHNOLOGIES LIMITED 2016 Active WD24
AR MECHANICAL ENGINEERING LTD 2026 Active WD24
D&D PRECISION DUCTWORK LTD 2025 Active WD17
CARBON REWIND INSULATION LTD 2021 Active WD24
CARBON REWIND LTD 2019 Active WD24
CARBON REWIND RENEWABLES LTD 2021 Active WD24
TROYAN LTD 2019 Active WD17
SYNRG PLUMBING AND HEATING LTD 2025 Active WD17
TWB PROPERTY LTD 2022 Active WD17
BLOCKED UP LTD 2026 Active WD24
BYFIELD HOMES LTD 2019 Active WD24
CHARLIE PAY PLUMBING SERVICES LTD 2019 Active WD24
HF PLUMBING & HEATING LTD 2020 Active WD24
MILSONS SERVICES LTD 2024 Active WD24
MK DRAINAGE LTD 2018 Active WD24
R J BISHOP SOLUTIONS LTD 2019 Active WD24
THAMES INTERIORS LTD 2022 Active WD24
THERMO HEATING & COOLING LTD 2025 Active WD24
FLOW SPEED PLUMBING LTD 2025 Active WD18
DPH MECHANICAL LTD 2016 Active WD18
GASTON PLUMBING LTD 2023 Active WD18
MIRABOLIS LTD 2016 Active WD18
NAVRANG CONSTRUCTION LTD 2022 Active WD18
WATFORD ME LIMITED 2025 Active WD24
RWP PLUMBING SERVICES LTD 2021 Active WD24
MASTERFIX HEATING & BUILDING LTD 2025 Active WD24
NOVA HEATING SOLUTIONS LTD 2019 Active WD17
GAS FAST LIMITED 2006 Active WD24
J C HARROW LIMITED 2021 Active WD24
EVA PLUMBING LTD 2022 Active WD18
LPG GROUP LTD 2018 Active WD24
ATLAN ENGINEERING LTD 2026 Active WD18
RENEWABLE ENERGY HEATWORKS LTD 2025 Active WD18
JK INSPIRATION LTD 2022 Active WD18
GAS ECO HEAT LTD 2026 Active WD24
PR PLUMBING & BUILDING SOLUTIONS LTD 2026 Active WD18
EK HYDRO-TECH PRO LIMITED 2022 Active WD17
AGCOOLINGSERVICES LTD 2026 Active WD18
LIGHTHOUSE ELECTRICAL & PLUMBING LTD 2026 Active WD18
SUSTAIN HEAT LIMITED 2024 Active WD24
SUSTAIN HOMES LIMITED 2020 Active WD24
ABTAP LIMITED 2003 Active WD24
STRAIGHTFIX LTD 2024 Active WD18
SAVE YOUR ENERGY LTD 2010 Active WD24
BB PLUMBING & HEATING SERVICES LTD 2017 Active WD19
LDF GAS SOLUTIONS LTD 2026 Active WD24
ROBERTS HEATING LTD 2022 Active WD24
S.MISTRY GAS & ELECTRIC LTD 2009 Active WD18
V PLUMB LTD 2024 Active WD18
CPB GAS LTD 2023 Active WD19
MI PRO SERVICES LIMITED 2014 Active WD24
MGBOTEA LTD 2019 Active WD18
GOOD EXPERIENCE LTD. 2018 Active WD24
WS CONTRACTORS LTD 2025 Active WD19
OXSPARKS HEATING AND ELECTRICAL LIMITED 2019 Active WD18
KENWORX PLUMBING & HEATING LTD 2026 Active WD19
A&R HEATING AND PLUMBING SERVICES LTD 2022 Active WD18
HIGH PERFORMANCE CONTRACTORS LTD 2024 Active WD24
GAS STUFF SOLUTIONS LTD 2026 Active WD24
GDAN INSTAL LTD 2015 Active WD19
SWIFT COOLING AND HEATING SOLUTIONS LIMITED 2018 Active WD24
DAVID BLAKEY SERVICES LIMITED 1999 Active WD24
DBS CONTROLS LIMITED 2015 Active WD24
PLUMBING ESSENTIALS LIMITED 2023 Active WD18
ADVANCED HEATING & PLUMBING LIMITED 1999 Active WD25
EMELEC BUILDING SERVICES LTD 2013 Active WD18
OPTICOOL SERVICES LTD 2022 Active WD18
PRIME AIR AC LTD 2007 Active WD18
ALLEN PROPERTY MAINTENANCE LIMITED 2026 Active WD25
PEACOCK MECHANICAL SERVICES LTD 2022 Active WD25
PEACOCK PLUMBING & HEATING SERVICES LTD 2017 Active WD25
EUROSUPPLY.CO.UK LTD 2023 Active WD25
V&M PROPERTY MAINTENANCE LTD 2023 Active WD24
LANDYK REFRI LTD 2026 Active WD18
LITTLE MISS PLUMBING AND HEATING LIMITED 2024 Active WD25
WOJ-TEC BUILDING PLUMBING GAS HEATING LIMITED 2015 Active WD17
T.F. TULL LIMITED 1971 Active WD18
LEO GAS INSPECTION LIMITED 2016 Active WD25
VIVID PLUMBING SOLUTIONS LTD 2018 Active WD24
AQUAMOD LTD 2018 Active WD25
A C SOLUTIONS GROUP LIMITED 1982 Active WD18
BRIAN DUMBLETON & SONS LIMITED 1973 Active WD18
ACDI ELECTROVENT LTD 2023 Active WD25
UJETRANS LTD 2025 Active WD17
CRITICAL SOLUTIONS LTD 2024 Active WD25
HITCHES & GLITCHES LTD 2021 Active WD25
TUBS TAPS & TILING LTD 2016 Active WD25
GRM ENERGY LTD 2022 Active WD18
WATERFORD DEVELOPMENT LIMITED 2006 Active WD18
MPS BUILDING SERVICES LTD 2021 Active WD19
ALPHA VENTILATION SERVICES LTD. 2023 Active WD25
ROBERT SERVICE COMPANY LIMITED 2000 Active WD25
P CAREY SERVICES LIMITED 2008 Active WD19
A.R.BEVERIDGE & SONS LTD 2018 Active WD18
ABC REFRIGERATION LTD 2019 Active WD18
ATHERSTONE AIR CONDITIONING LIMITED 2026 Active WD18
BAKER PLUMBING AND HEATING LTD 2021 Active WD18
DJML HEATING LIMITED 2016 Active WD18
EXCEL MAINTENANCE SERVICES LTD 2016 Active WD18
GAS TECH HEATING LIMITED 2016 Active WD18
GN HEATING LTD 2017 Active WD18
HULME PROJECT MANAGEMENT LIMITED 2009 Active WD18
TOWER GAS LTD 2016 Active WD18
METROPOLITAN RENEWABLES LIMITED 2026 Active WD19
HEATX LTD 2018 Active WD19
KINGSWOOD HEATING LIMITED 2017 Active WD25
AMS DOMESTIC LTD 2013 Active WD18
HOMECURE LIMITED 2009 Active WD18
HSM SERVICES LTD 2022 Active WD19
FLOWTECH COMMISSIONING LIMITED 2016 Active WD19
GAS & PLUMB SERVICES LTD 2022 Active WD25
HICKEY HEATING SERVICES LIMITED 2010 Active WD25
VEP BUILDING SERVICES LTD 2015 Active WD19
GLC PLUMBING LTD 2024 Active WD19
V&K HEATING LTD 2023 Active WD25
E&E HEATING AND PLUMBING LTD 2020 Active WD25
BBH PLUMBING & HEATING LTD 2017 Active WD25
T A MORGAN LTD 2023 Active WD25
URANTUB LTD 2026 Active WD25
LION PLUMBING LTD 2011 Active WD19
HYDROHUB MECHANICAL LTD 2025 Active WD19
ROEN GAS & ELECTRIC LTD 2020 Active WD19
QUAL SERVE GAS AND HEATING SERVICES LTD 2019 Active WD19
J. KENDAL GAS, PLUMBING, AND HEATING LTD 2019 Active WD19
ASTEC CONSTRUCTION LTD 2010 Active WD19
SAFE PLUMBING&GAS ENGINEERS LTD 2019 Active WD19
TERAHEAT LTD 2016 Active WD25
STOP DRIP PLUMBING AND HEATING LTD 2024 Active WD19
XPERTPLUMBINGHEATINGSERVICES LIMITED 2020 Active WD19
L.R. HEATING & ELECTRICAL SERVICES LTD 2004 Active WD25
NEXGEN PLUMBING SOLUTIONS LTD 2025 Active WD19
COSY CAVE LIMITED 2015 Active WD19
ON DEMAND DRAINAGE LTD 2026 Active WD25
ON-DEMAND PLUMBING & HEATING LIMITED 2020 Active WD25
LDN PLUMBING AND HEATING SERVICES LTD 2023 Active WD19
CITY WATER SOLUTIONS LTD 2020 Active WD19
COMPSON19 LTD 2017 Active WD17
GLOBAL ENVIRONMENTAL LTD 2010 Liquidation WD17
MK CITY GROUP LTD 2009 Liquidation WD17
ABFLOW PLUMBING SERVICES LTD 2015 Active - Proposal to Strike off WD17
PLUMBPLUS1UK LTD 2023 Active - Proposal to Strike off WD24
PARRATT PLUMBING & HEATING LTD 2019 Active - Proposal to Strike off WD17
AVENUE HEATING LTD 2017 Liquidation WD24
P. J. HEATING AND PLUMBING LIMITED 2008 Active - Proposal to Strike off WD24
PEARCE AND SMITH HOME IMPROVEMENTS LTD 2025 Active - Proposal to Strike off WD24
PULCRIS PLUMBING SERVICES LIMITED 2022 Active - Proposal to Strike off WD24
FALCON HEATING SOLUTION LTD 2016 Active - Proposal to Strike off WD24
HOLLAND HOME ENERGY SERVICES LIMITED 2009 Active - Proposal to Strike off WD24
AQUASOLVE LIMITED 2025 Active - Proposal to Strike off WD19
PLUMBMATRIX LTD 2010 Active - Proposal to Strike off WD25
MARSHALL N JONES LIMITED 2012 Active - Proposal to Strike off WD25
WHITEWOOD HEATING LIMITED 2018 Active - Proposal to Strike off WD25
ERIK CONSTRUCTION (LONDON) LIMITED 2015 Active - Proposal to Strike off WD25
C G R PLUMBING LIMITED 2015 Active - Proposal to Strike off WD17

Electrical and other installation companies

Showing 100 of 294 electrical and other installation companies. Active offices nearest the town centre come first. No profile page for this SIC class.
CompanySICIncorporatedStatusDistrict
MODULAR GLASS SYSTEM NEO LTD 43290 · other construction installation; 73120; 74100; 96090 2015 Active WD17
BRITFRUIT LOGISTICS G.B LTD 43210 · electrical installation 2024 Active WD17
BOAD MANAGEMENT SERVICES LTD 43290 · other construction installation; 70229; 82990 2022 Active WD17
HAYWARD GOLD LTD 43290 · other construction installation; 41201; 41202; 42990 2023 Active WD17
INTERBAR LIMITED 43290 · other construction installation; 74100 1986 Active WD17
KINGSON ELECTRICAL LIMITED 43210 · electrical installation 2005 Active WD17
MILLS & CO ELECTRICAL LTD 43210 · electrical installation 2016 Active WD17
ROCK WALL FACADE LIMITED 43290 · other construction installation 2025 Active WD17
S.G.E. NORTH LONDON LIMITED 43210 · electrical installation 2002 Active WD17
SOCHA PROPERTIES LTD 43290 · other construction installation; 41202; 98000 2022 Active WD17
SPENCE REFIT LTD 43290 · other construction installation; 41201; 43390; 43999 2005 Active WD17
COOPER FENCING LIMITED 43290 · other construction installation 2025 Active WD17
HURSEY INSTALLATIONS LTD 43290 · other construction installation 2025 Active WD17
MARK BEARD ELECTRICAL SERVICES LTD 43210 · electrical installation 2014 Active WD17
N. WEBB ELECTROTECHNICAL LTD 43210 · electrical installation 2014 Active WD17
OMS MECHANICAL & ELECTRICAL LIMITED 43210 · electrical installation 2025 Active WD17
ROGER OLIVE ELECTRICAL LTD 43210 · electrical installation 2016 Active WD17
HOIST & FIX RIGGING LTD 43290 · other construction installation 2024 Active WD17
LIGHTEN UP LIMITED 43210 · electrical installation 2016 Active WD17
R&L ELECTRICAL LTD 43210 · electrical installation 2025 Active WD17
EVERSTEAD CONSTRUCTION LIMITED 43210 · electrical installation; 41201; 41202 2025 Active WD17
ELECTROLIFE LIMITED 43210 · electrical installation; 96090 2020 Active WD17
WATFORD HOME IMPROVEMENTS LTD 43290 · other construction installation 2026 Active WD17
DAA ELECTRICAL LTD 43210 · electrical installation 2011 Active WD17
SA SPARKS ELECTRICAL SERVICES LTD 43210 · electrical installation; 43290 · other construction installation 2024 Active WD17
TAC BUILDING CONTRACTOR LTD 43210 · electrical installation; 41202; 43390 2026 Active WD17
UNESTA HOMES LIMITED 43290 · other construction installation; 41202; 43320; 43390 2025 Active WD17
EWANDESIGN LTD 43210 · electrical installation 2020 Active WD17
G&M TELECOM LTD 43290 · other construction installation; 42220 2024 Active WD17
TOMPKINS BROS LTD 43290 · other construction installation; 81300 2021 Active WD17
CSC - RENOVATION LTD 43210 · electrical installation; 43330; 43341; 43999 2021 Active WD18
AYAN ELECTRICIANS LIMITED 43210 · electrical installation 2019 Active WD17
SERVICEFILL LIMITED 43290 · other construction installation; 70229 2014 Active WD17
PB08 DEVELOPERS LTD 43210 · electrical installation; 41100; 43110 2021 Active WD17
SPARKTRIZITY LONDON LTD 43210 · electrical installation; 71200 2019 Active WD17
A13EAVS LIMITED 43210 · electrical installation 2024 Active WD17
INHURST TRADE SERVICES LTD 43290 · other construction installation 2025 Active WD17
NORRIS WHITE SERVICES LTD 43210 · electrical installation 2019 Active WD17
MGI ELECTRICAL SOLUTIONS LIMITED 43210 · electrical installation 2018 Active WD18
WELD SPECIALISTS LTD 43290 · other construction installation 2025 Active WD17
MFK ELECTRIC LTD 43210 · electrical installation 2024 Active WD18
VFD SYSTEMS LIMITED 43290 · other construction installation 2022 Active WD24
BUDUR TILING LTD 43290 · other construction installation 2025 Active WD17
HRM STEEL LTD 43290 · other construction installation 2026 Active WD24
ENLIGHTENING LTD 43210 · electrical installation 2024 Active WD24
REAL K&L CONSTRUCTION LTD 43290 · other construction installation; 41202; 43390 2023 Active WD17
N.A.S. ELECTRICAL LIMITED 43210 · electrical installation 2010 Active WD18
ARTHA NEXUS LIMITED 43210 · electrical installation; 47910; 62020; 78300 2025 Active WD17
DD 2026 CONSTRUCTION SOLUTIONS LTD 43290 · other construction installation; 41201; 41202 2026 Active WD17
EP MASONRY LTD 43290 · other construction installation 2013 Active WD24
2EO FACTORY LTD 43210 · electrical installation; 32990; 47910; 71121 2015 Active WD18
PLANEX LTD 43290 · other construction installation; 41201; 41202; 74100 2024 Active WD18
RDA ELECTRICAL LIMITED 43210 · electrical installation 2014 Active WD18
IBMB BUILDING LTD 43290 · other construction installation 2025 Active WD24
MAGNUM DRYWALL SOLUTION LTD 43290 · other construction installation; 41202 2024 Active WD18
CARROLL ELECTRICAL INSTALLATIONS LIMITED 43210 · electrical installation 2015 Active WD17
M.A.M ELECTRICAL SERVICES LTD 43210 · electrical installation 2023 Active WD18
LONDON LIGHTWORKS LTD 43210 · electrical installation; 47599; 74100 2017 Active WD24
IG3 CONSTRUCTION LTD 43290 · other construction installation; 41202 2023 Active WD17
BERT ELECTRICS LIMITED 43210 · electrical installation 2014 Active WD17
W.A.C ELECTRICS LTD 43210 · electrical installation 2023 Active WD17
CORGLEN SERVICES LTD 43210 · electrical installation 2026 Active WD24
DHL ELECTRICAL LTD 43210 · electrical installation 2026 Active WD24
M&M BUILDING ENTERPRISE LTD 43290 · other construction installation; 43330; 43999 2024 Active WD24
S & I GROUNDWORKS & CIVILS LTD 43290 · other construction installation 2025 Active WD24
SD BOIZE & CO LTD 43290 · other construction installation 2019 Active WD24
SOL GLASS LTD 43290 · other construction installation; 43342 2024 Active WD24
UNIVERSAL PROTECTION LIMITED 43210 · electrical installation 2009 Active WD24
OLDSY INSTALL LTD 43290 · other construction installation 2026 Active WD17
WATFORD POWER SERVICES LTD 43210 · electrical installation 2025 Active WD18
PM ELECTRICAL INSTALLATION LTD 43210 · electrical installation 2022 Active WD18
TOTHALECTRIC LTD 43210 · electrical installation 2024 Active WD24
PYROSTOP LIMITED 43290 · other construction installation; 43999 2025 Active WD18
AR GREATER LONDON LTD 43210 · electrical installation; 43390; 96090 2024 Active WD18
JOTS ELECTRICS LIMITED 43210 · electrical installation 2014 Active WD18
ALL WIRED UP SOLUTIONS LTD 43210 · electrical installation; 62090 2022 Active WD17
CLESTAR LIMITED 43290 · other construction installation; 43999; 72190; 74902 2025 Active WD18
WOLF AND YOUNG LIMITED 43290 · other construction installation; 70210 2010 Active WD18
TROCI CONSTRUCTION SERVICES LTD 43290 · other construction installation; 41201; 41202 2025 Active WD18
BURK ELECTRICALS LIMITED 43210 · electrical installation 2019 Active WD18
C.ROPER ELECTRICAL LIMITED 43210 · electrical installation 2003 Active WD18
AMPVOLT ELECTRICAL SERVICES LTD 43210 · electrical installation; 43999 2026 Active WD24
IDEAL VIEW ELECTRICAL LTD 43290 · other construction installation 2026 Active WD24
BAGATA LTD 43210 · electrical installation; 96090 2016 Active WD24
FAKRI LTD 43290 · other construction installation 2022 Active WD24
SIERRA ELECTRICAL ENGINEERING LTD 43210 · electrical installation 2015 Active WD24
LAND LOGICAL DARTFORD LIMITED 43290 · other construction installation 2014 Active WD24
LAND LOGICAL LTD 43290 · other construction installation 2012 Active WD24
LAND LOGICAL NORLANDS LANE LIMITED 43290 · other construction installation 2019 Active WD24
CITY SPARKS SERVICES LTD 43210 · electrical installation 2024 Active WD24
R&F MAINTENANCE LTD 43290 · other construction installation; 43320; 43341; 43390 2026 Active WD18
GRIGORE BIZGA LTD 43290 · other construction installation 2024 Active WD24
ZERO FLOAREA LTD 43210 · electrical installation; 42220; 43120; 43999 2025 Active WD24
THUNDER ELECTRICAL SERVICES LTD 43210 · electrical installation; 43290 · other construction installation; 42220; 95210 2016 Active WD17
REYNOLDS INSULATION SOLUTIONS LTD 43290 · other construction installation 2018 Active WD24
BALMORAL CONTRACTS LTD 43290 · other construction installation; 41201 2024 Active WD24
SEKURA SERVICES LTD 43290 · other construction installation; 41202 2021 Active WD24
ADO BUILDING COMPANY LIMITED 43290 · other construction installation 2006 Active WD24
RICKYTECH INDUSTRIES LTD 43210 · electrical installation 2016 Active WD18
PERFECT INSTALL LTD 43290 · other construction installation 2018 Active WD24

Heat and planning around Watford

In Watford last summer (2026) there were ≈10 nights that stayed above 18 °C — 8 times the 1991–2020 average of 1.3 (ERA5 reanalysis, grid ≈30 km, lower than street temperatures in cities). The figure is the household-weighted mean of 5 postcode districts where these offices are registered.

8% of sampled postcodes in Watford sit in a conservation area (3,194 live postcodes across 5 districts).

In England an air-source heat pump on a house can be permitted development under Class G when the conditions hold, including the MCS 020a noise limit of 37.0 dB(A) (§3.2 Step 8).

Companies House snapshot 1 Sep 2026, retrieved 25 Sep 2026. The address shown is the registered office, not a verified operating base. This catalogue is a directory of incorporated businesses, not an exhaustive installer register. Hot nights: ERA5-ARCO, June–August, minimum at or above 18 °C, household-weighted across the districts where these offices are registered, retrieved 25 Sep 2026. Conservation-area share: sampled postcode points, snapshot 25 Sep 2026. Distances are an equirectangular approximation to 0.1 km.

Better than a town directory that only lists names: each plumbing company links to its Companies House record and the local hot-night count.

Report an error in these figures