Extensive Range of Services

We can offer a vast range of services, from design to installation, to diagnoses and repairing. We can offer it all. Boiler repairs, servicing and unvented hot water systems are our speciality! This is what we do and we are very good at it!  

We care

We understand that heating and hot water is a major part of day to day life, and when one of them goes wrong its a major problem! We aim to be with our customers on the same day as the call for our repairs. We also try to make any installation as easy for our customers as possible. We will treat your home the same as we would treat our own!

Competitive Prices

All of our services are carried out by experts, specialists in our chosen field! It is one of the reasons our clients use us time and time again, and always come back to us! Our fixed prices make it clear for the customer to see!

  • Boiler Installations

  • Boiler Repairs

  • Boiler Service

  • Landlords

  • Water Softeners

  • Power Flush

  • Unvented Cylinders

  • Certification for local landlord

  • New Unvented Cylinder Installation

  • New heating installation

  • New heating installation 4

  • New heating installation 3

New IDEAL VOGUE

This week in Brentwood, Essex, we carried out the installation of a new IDEAL VOGUE combination boiler. Our customer had… Read More…

New bathroom installation

This is a New bathroom installation we carried out in Leigh-on-Sea, Essex. We isolated all supplies to the bathroom and… Read More…

Potterton Titanium

A new Potterton titanium installed in Leigh-on-Sea, Essex. This boiler comes with a 7 year parts and labour warranty. We… Read More…

Bathroom installation

Another new bathroom installation carried out in Loughton, Essex. Removed existing bathroom suite and tiles. First fix for new bathroom…. Read More…

Unvented installation

This week in Basildon, Essex, we carried out a Unvented installation. We where called out for a leak coming from… Read More…

Boiler installation

This week in Brentwood, Essex, we carried out this new boiler installation. After being called out to repair the existing… Read More…

Vaillant F61

Another Vaillant F61 problem fixed in Basildon, Essex this week. The Vaillant F61 fault code relates to the Gas valve… Read More…

New ideal logic plus installation

This week in Grays, Essex, we carried out the installation of this new ideal logic plus combination boiler. This boiler… Read More…

Repair on Main combi 30he

This week we carried out another repair on a Main combi 30he. The customer in Stanford-le-hope, Essex, gave us a… Read More…

New Ideal Logic

Last week in Grays, Essex we installed this new Ideal Logic plus which offers an amazing 7 year parts and… Read More…

New Combination Boiler

One of this weeks jobs has been to install a new combination boiler in Corringham, Essex. We fitted this new… Read More…

New Vaillant boiler

This new Vaillant boiler was installed by us in Grays, Essex. With the customer having a new loft conversion, extension… Read More…

Power flush, Essex!

This week we carried out another Power flush in East tilbury, Essex! This customer has boiler cover with one of the… Read More…

Vaillant F61 fault code

This week I got the call for a Vaillant F61 fault code in Laindon, Essex.  The Vaillant F61 fault means that the gas valve control… Read More…

Vaillant Eco-tec

Called out to another Vaillant Eco-tec today in Benfleet, Essex. The customer complaining that the heating is coming on when… Read More…

Megaflo Repair

Called out to a Megaflo Repair in South Woodham today. The customer called complaining that they had no hot water… Read More…

New Ideal Vogue

Another new Ideal Vogue fitted in Bromley, Kent. We removed the existing cold water tanks in the loft, and the… Read More…

Summer Service Offer!

This summer we are offering a full scope boiler service anywhere in Essex for £65.00 This service isn’t a quick… Read More…

Megaflo Repair.

A customer from Rochford, Essex gave me call this week, with the problem that they didn’t think the pressure is… Read More…

Vaillant Ecotec Service

There are a lot of people that don’t think having their boiler serviced is very important, and these are the… Read More…

Vaillant EcoTec repair.

Another Vaillant EcoTec repair carried out in Essex this week. This time in Shenfield. The customer gave me a call… Read More…

Boiler repair

Another boiler repair carried out this week! This time in Brentwood, Essex. The customer called complaining that the hot water… Read More…

Ideal logic installation

As an idea accredited installer I install a lot of these boilers, This new ideal logic installation comes with a… Read More…

Central heating leak

I am not a 24hour company, but i will try my best to get to any customers that needs me… Read More…

Megaflo Repair.

Lacking hot water? A very common call I recieve from customers that have the megaflo unvented hot water system is… Read More…

Gas Leak On Safety Inspection

Whilst doing a landlord safety certificate this week in Brentwood, Essex I found this Gas leak! Whilst doing the routine… Read More…

Proud sponsors of the Stanford Sirenettes

We are very proud to annouce that we have sponsorced our local girls rugby team. We are involved with the… Read More…

Vaillant Turbomax Repair

Another very common Vaillant Turbomax repair again already this week in Chelmsford, Essex. After talking to the customer over the… Read More…

Vaillant F75 Repair

Today we had yet another call for a Vaillant F75 repair. We received the call at half past 8 this… Read More…

Ideal boiler servicing

Last week was another busy servicing week for us. We installed two ideal vogue boilers and another ideal logic plus… Read More…

Vaillant boiler servicing.

This week has been a busy week for boiler servicing, and all on vaillant boilers, just what we like! We… Read More…

Winter is coming, are you ready!!

With winter on its way, we are getting calls coming in thick and fast to make sure that boilers a… Read More…

Baxi boiler installation

New baxi boiler installed this week in Westcliff, Essex. Baxi are a good, reliable boiler and we where happy to… Read More…

Vaillant eco tec F75

Got yet another call for the Vaillant Eco tec F75 fault code this week in North london, N12.  We get… Read More…

Ideal Vogue

Ideal offer a great 10 year warranty with there Ideal Vogue. So not only will a new boiler save you… Read More…

We install Magnaclean system filters

Need a Magnaclean system filter installed? We can help. Having A magnaclean system filter installed in your home has so… Read More…

Another Megaflo Repair By Calgas.

Had a call over the weekend from a customer in Hatfield Broad Oak asking for us to go and repair… Read More…

Boiler service

Today we carried out another boiler service in North london. We only carry out a full service, we dont take… Read More…

Calgas goes swimming!

New boiler installed recently for Mrs Angela sharma in Hornchurch, RM11, To keep her swimming pool heated! Very enjoyable job!

New website launched

  • January 07, 2015
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The new website created by Delicious Webdesign in Essex has been a great success with great feedback from clients. We… Read More…

Broken boiler? No problem!

  • January 07, 2015
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We often get called out to emergencies when the weather turns cold and this winter has been no different. I… Read More…

Winter worries

  • January 07, 2015
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We often get called out to emergencies when the weather turns cold and this winter has been no different. I… Read More…

Why Choose Us

Swift response

We can help with any emergency

Quality workmanship

We take pride in every installation and repair

Competitive prices

Our service is great value-for-money


Welcome to Calgas, home to some of the very best and most competitively priced boiler repairs and services in Essex, North and East London.

As professional gas engineers with years of experience in carrying out boiler repairs and heating system services, you can be confident that you will receive a fantastic customer experience at an ever better rate.

Here at Calgas, our team of professionals not only carry out boiler repairs, servicing and installation, but also provide a variety of different services ranging from landlord certification to water softener installation. We also carry out repairs and servicing on most models of Vaillant boilers, including Turbomax, EcoMax and the new Ecotec models.

For a reliable, honest and professional service you can trust, please don’t hesitate to call our friendly team on 07585 660494. We can provide you with an over the phone quotation or a free home visit and quotation at a time convenient for you.

Get in touch

You will be happy you chose Calgas!

As you can see Calgas comes highly recommended, we look forward to working for you.