Your local, fully qualified heating engineers providing a trusted service - helping you keep your home warm, safe and comfortable.

Founder & Owner:
Lee Nichols

Founded in 2009 by Lee Nichols, Assured Heating Essex has gained vast experience within the domestic and commercial heating sector. Day to day, Lee runs the office and attends all of the site surveys. With his determination and drive the company has gone from strength to strength, furthermore, is consistently growing. Lee is highly motivated, with exceptional multi-tasking and organisational skills…he is also the nicest guy you will ever meet!

At Assured Heating Essex we specialise in gas and oil heating systems that are energy-efficient, reliable and are value for money.

We are fully qualified to install and maintain any boiler type using quality heating supplies and we currently perform over 250 boilers installations per year in the local area.

We are accredited with Worcester Bosch, Viessmann boilers, Vaillant boilers, Glow-worm boilers and ATAG boilers. We are Gas Safe registered and are Oftec oil registered installers.

We have engineers that specialise in boiler installation, we also have engineers that specialise in system repairs. We believe different engineers have different strengths, an installation engineer is not necessarily going to know the common faults of a 15 year old boiler! We have a team of engineers that are experts in their own field.

We are proud of our reputation for meeting the needs of our customers while staying true to our principles of delivering the highest standards of customer service, based upon the core tenets of trustworthiness, professionalism, reliability and value for money. We have an office based in Rettendon, which is staffed Monday to Friday 9am until 5pm so feel free to pop down to see us!

Our customer commitment.

It’s not just about what we do; it’s about how we do it. According to Harvard Business School 80% of businesses claim to provide good customer service in contrast to only 8% of customers who feel the same way! We are committed to delivering the highest standard of professionalism and customer service, which is why we receive so many enquiries that start “you were recommended to us by my mother, father, sibling, colleague or friend”.

We value the customer experience and actively welcome feedback to help us improve. Our company is listed on several trusted review platforms, including Google Reviews, Trustpilot, and Checkatrade. We gather feedback from every job we complete and appreciate constructive input that helps us improve and better support our clients.

We are proud of our unrivalled reputation for meeting the heating system needs of our customers while staying true to our principles of delivering the highest standards of customer service, based upon the core tenets of trustworthiness, professionalism, reliability and value for money.

Pride in workmanship.

At the heart of everything we do is a deep commitment to quality and the attention to detail. We take pride in our work – no matter the size of the project. From the first consultation to the final finishing touches, every detail is handled with care, precision, and professionalism.

Our team is passionate about delivering results that exceed expectations. We don’t consider a job complete until our clients are fully satisfied. This dedication to excellence is what sets us apart and keeps our clients coming back, time and time again.

Investing in Our People

At the heart of our business is a commitment to people, both our customers and our team. We believe that by investing in our staff, we deliver a better, more reliable service to you.

We’re proud to have a dedicated team of 7 to 10 Engineers supported by 2 experienced office-based staff. From fieldwork to customer support, every member of our team plays a vital role in delivering smooth, efficient service.

Ongoing Training & Development
We stay ahead of the curve by ensuring our staff receive continuous training on the latest industry standards, tools, and technologies. This means our team is always equipped with the knowledge and skills needed to deliver safe, accurate, and efficient work.

Modern Tools & Technology
We use the latest booking and scheduling systems to provide a seamless monthly booking process – saving you time and keeping everything running smoothly behind the scenes.

Our investment in people and technology is an investment in quality, giving you peace of mind, every step of the way.

     EXCELLENT  
  1079 reviews

Reviews from Some of Our Happy Customers

        Posted on Google  
   
   Pam Mahoney 
 6 November 2026
 
 
 Trustindex verifies that the original source of the review is Google. Great professional and friendly service as always.
Highly recommend.
  
 
     Posted on Google  
   
   John Lavery 
 6 November 2026
 
 
 Trustindex verifies that the original source of the review is Google. An absolutely first-class experience from beginning to end. Dwayne was friendly, professional and delivered excellent service, making the whole boiler servicing appointment a pleasure rather than a chore.

What really stood out was the excellent communication. The reminder email and text in advance, followed by a text to let me know the engineer was on his way, were fantastic touches and made everything incredibly straightforward.

Everything was well organised, punctual and completely stress-free. It’s refreshing to deal with a company that genuinely gets customer service right.

Highly recommended and a company I will certainly continue to use. Excellent service all round!
  
 
     Posted on Google  
   
   Geoffrey Craven 
 6 November 2026
 
 
 Trustindex verifies that the original source of the review is Google. Just had a boiler service, Mitch was polite and friendly. On time, Speedy too. Thanks
  
 
     Posted on Google  
   
   Rob Harris 
 5 November 2026
 
 
 Trustindex verifies that the original source of the review is Google. Used Assured heating for our oil boiler service. Clear and professional communication by phone, WhatsApp and in person. Will certainly use again.
  
 
     Posted on Google  
   
   Simon Hewson 
 5 November 2026
 
 
 Trustindex verifies that the original source of the review is Google. Marc our service engineer was excellent, arrived promptly (got a courtesy text to say he was on route). Completed service checks plus a few that previous engineers from assured had not completed before (that I remember).
Given some advice and recommendations. Sent paperwork via email and able to pay via card. Thank you Marc and all at assured team. Will be using Assured heating team in the future
  
 
     Posted on Google  
   
   Anne Lusher 
 4 November 2026
 
 
 Trustindex verifies that the original source of the review is Google. So pleased we chose Assured Heating last year. Their communication is excellent and makes you feel valued as a customer.  Just had first service and engineer was thorough in checking everything, very efficient, polite and friendly.  Couldn’t recommend them enough.
  
 
     Posted on Google  
   
   Geoff Webb 
 3 November 2026
 
 
 Trustindex verifies that the original source of the review is Google. Just had my indirect hot water cylinder replacedhe arrived he took his footwear off and proceeded to carry out the job in hand2 in clean and efficient manner
  
 
     Posted on Google  
   
   Trev Atkins 
 3 November 2026
 
 
 Trustindex verifies that the original source of the review is Google. Marc was polite friendly  and very respectful  of our home, carried out full boiler service with good communication. This is the 3rd  boiler service  using Assured Heating. We found all the fitters very friendly.  Would recommend  Assured  Heating.
  
 
     Posted on Google  
   
   James Moran 
 3 November 2026
 
 
 Trustindex verifies that the original source of the review is Google. Had our annual routine boiler service again by Assured, from the reminder that it’s due, to booking online with set times and dates to the days leading up to the engineer arriving, and notification of Mitch’s impending arrival, the service has been nothing short of excellent.

Great organisation and customer care!

Thank again,
James
  
 
     Posted on Google  
   
   Peter Whymark 
 30 October 2026
 
 
 Trustindex verifies that the original source of the review is Google. We had a problem with our NEST thermostat in that it had failed so we had no heating. Assured Heating responded within 24 hours to replace and install a new Thermostat and make sure all was working as expected. This included setting up the relevant and required APP on our phones.
As usual excellent service from all the team, both Amy in the office and the engineer Mark who attended.
Many thanks
  
 
     Posted on Google  
   
   Neil Offord 
 29 October 2026
 
 
 Trustindex verifies that the original source of the review is Google. Super efficient and professional service.
From initial enquiry to completion of the job I was impressed with all the staff and work carried out.
I’ll be using Assured Heating Essex for any future work.
  
 
     Posted on Google  
   
   Robert Jolley 
 29 October 2026
 
 
 Trustindex verifies that the original source of the review is Google. A very good company to use. Engineers very professional. Always on time. Have been using Assured for several year, and have always been impressed with their service.
  
 
 
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