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99.8 % of calls answered in 8 rings!

BOILER REPAIR, SERVICING & INSTALLATIONS

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...in Cardiff & Surrounds

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FAST RESPONSE

OAP DISCOUNT

FIXED PRICE QUOTES

ALL WORK GURANTEED

NO USE OF SUBBIES!

Welcome to M.J. Harris Boilers & Gas Cardiff. 

 

We're a family run business offering boiler repair, servicing & installations by our own local GAS SAFE & OFTEC Registered Engineers in Cardiff.

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Gas

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LPG

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Oil

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CALL NOW !

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Our Service

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Your engineer will call within 1 hour of arrival

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You'll receive a

fixed price quote 

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For any repairs, we'll provide a

3 month guarantee

Boiler Servicing

Piece-of-mind boiler servicing by local Gas Safe & OFTEC engineers. 

Avoid the shock of an unexpected boiler breakdown with an annual boiler service.  Our boiler servicing includes; 

Complete Safety Check

Check For Leaks & Harmful Emissions

Inspection, Testing & Cleaning 

Gas Pressure Check 

Checking of Seals

Completion of Service Record 

Boiler Installations

If your boiler is getting on a bit, it might be safe to buy a sparkly new one!

Our local, qualified engineers can fit your boiler safely, promptly and at a competitive price. 

All Makes & Models

Up To 12 Year Manufacturer Guarantee

Supply & Fit or Fit Only

Gas, LPG or Oil Boilers

We can also install a whole new heating system if required!

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"Just wanted to say how nice it was to have Matthew and Richard around. They were patient, super nice and explained everything in detail"

- Mrs Daunte, Cardiff

1st Party Reviews!

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4.7/5

CALL NOW !

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"Just wanted to say how nice it was to have Matthew and Richard around. They were patient, super nice and explained everything in detail"

- Mrs Daunte, Cardiff

M.J. Harris Repairs is an Introducer Appointed Representative of TradeHelp for the purpose of credit broking introductions only. Our firm reference number is1025479. TradeHelp is a trading style of TradeHelp Ltd, Marchwiel Centre, Bryn Lane, Wrexham Ind Est, LL13 9UT, registered in England (03712438), authorised and regulated by the Financial Conduct Authority (firm reference number 697812). TradeHelp are a credit broker, not a lender, and offer loans from a small panel of carefully selected lenders. TradeHelp do not offer financial advice and do not charge you for credit broking services. All loans are subject to status.

Copyright © 2025 M.J. Harris Repairs Ltd. All rights reserved.

MJ Harris Domestic Repairs is a trading name of M.J. Harris Repairs Ltd.

Reg no: 6906747

VAT Reg No: 935490701

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