Family run business
Established for 50 years

Mukesh Aggarwal – Technical Sales Director, E.W.A. Controls Ltd

A family-run business with all the qualities that ensure peace of mind. The first mechanical and electrical company I had the pleasure to work with in 1991, where we carried out the BMS controls at the world-famous Moorefield Eye Hospital. We have worked closely with JJ Engineers on many projects since 1991 and look forward to many more.

Alan Brophy – Inertia Construction Engineering

I have used JJ Engineering professionally for over 15 years and they have been a great contractor.

Highly recommend them to anyone looking for a competent MEP Services Installer for Commercial, Industrial, Retail or Residential projects.

Duncan Gill – Whole Building Services WBS Ltd

I look forward to our continuing relationship and would have no hesitation in recommending JJ Engineering to potential clients.

Eamon O’Conner – Conner Construction Limited

Having worked with Paul & his team for the last eight years I can clearly say I hold JJ Engineering Co. in very high regard. In this time we have undertaken numerous projects all varying in size & value but have never once been had any reason to doubt or question their ability.

AIR CONDITIONING HIGHLY RECOMMEND FIRST CLASS

I did a lot of research into this before l went with J J Engineering and had loads of companies round to quote for the work. And l must say from the start Gary’s attention to detail was first class, he advised us what would work better for my house. There estimate was a complete breakdown of all materials as well as cost of the machinery. Unlike the other firms there estimates were just one or two lines. This made you feel like they knew what they was doing and you could trust their work. And no hidden costs.Also big thanks to Paul and Fred who were the installation engineers can’t fault them. So tidy and professional absolutely first class a real credit to the company. Would highly recommend you to anyone in the future.

TonyH-2787

AIR CONDITIONING

JJ Engineering designed and installed air conditioning system in our bedroom.I was delighted with the timing and in particular, the care and efficiency of the installation. I would recommend their services to anyone.

Ian Jones 2.9.2019

SUPERB JOB!

I would highly recommend JJ Engineering after Paul ,Chris and Ollie installed a Mitsubishi Electric LN Series air conditioning unit in my home today , a real pleasure to meet the guys their professionalism , workmanship. Etc was to a very high standard.

MickD - 16.8.2019

5• SERVICE AND PEOPLE

Air Conditioning, Ventilation and Electrical Services installers. I have used JJ Engineering professionally for over 15 years and they have been a great contractor. Highly recommend them to anyone looking for a competent MEP Services Installer for Commercial , Industrial, Retail or Residential projects

Alan B

GYM AIR CONDITIONING

On a recommendation I used JJ Engineering to install a Mitsubishi Zen air conditioning unit in my home gym. Not only does it perform well, but it also looks great and is very quiet. Thoroughly professional and friendly service and installation with competitive pricing.

Charles L

THE BEST IN THE BUSINESS. 5 STAR SERVICE FROM START TO FINISH

Recommended by a sound studio in Soho their service was brilliant from start to finish. From Gary Katie and Lynne in the office to the extremely professional work on site by Paul and Tom who were a pleasure to have in my home. Can’t recommend them highly enough, a wonderful family run business that puts the customer first. The air con units in my bedrooms are awesome and just in

Colin M

100% RELIABLE

JJ Engineering are number one in customer service, offering solutions from start to finish.

Jess F

RELIABLE, DEPENDABLE COMPANY

Family run business that provides prompt and efficient service when required. Always helpful & courteous, irrespective of when the job is placed with them, during working hours or OOH which they cover for H&W and is a valued and much appreciated service. No job too big or small and feedback, communication is kept open throughout to ensure everyone is aware of status of repair until completed.

Doreen S

GREAT FAMILY BUSINESS!

JJ Engineering Co. is a family run business which has been operating for over 45 years. I would highly recommend this company for any Air Conditioning, Electrical or Ventilation works

Gary F

GREAT WORK WITHIN BUDGET

Fantastic service from start to finish. Helpful, great advice, professional staff and all within budget. Reliable company that also provide me with an amazing after care package. Highly recommended.

DidierG

LE COLOMBIER RESTAURANT

Great Family business, We started working with JJ Engineering since 1980 ( 37 years ago) at Brasserie st Quentin in London .Done 7 restaurants with them Ventilation and Air conditioning
Always very good with new project and always fantastic with emergency.

Didier Garnier 

RELIABLE, FLEXIBLE AND COMPETENT

JJ Eng completed an HVAC installation that is fit for purpose, was completed within budget and on time including extra work. The engineers were professional and took good care, and the Project Manager Gary was diligent and responsive right through from inception to completion. I have no qualms recommending JJ Eng. Amanda G, Regional FM

AmandaG-66

ENIGMA FIT OUT SOLUTIONS LTD

We have worked with JJ Engineering for the first time on a fit out at Lakeside Shopping Centre. They were component and worked around our fitters and other sub-contractors with no hassle.I would recommend using this company to other main contractors looking for a HVAC contractor.

Kish J

JJ ENGINEERING CO

We have worked with JJ Engineering now for about 15 years and in this time they have proved themselves to be a a valuable contractor as their commitment to maintain budget and program on each project is their first priority. We look forward to continuing our relationship.

WBSLtd

over 50 years experience
In The Engineering Industry

JJ Engineering Co. has grown steadily from a small company into a thriving business, providing engineering services in the South East of England.

Electrical

We carry out all types of electrical contracting work, whatever the nature of your contract we can help. We service all aspects of your electrical systems, from regular maintenance through to large projects.

Air Conditioning

With nearly 50 years experience, JJ Engineering Co. supplies air conditioning to a variety of clients, from small businesses to large PLC companies, in a wide range of industries and commercial sectors.

Ventilation

Based in Essex, JJ Engineering Co. can design, supply and install a very competitive and reliable range of ventilation products to suit your exact needs.

Heating

We offer a complete package to our clients including design, installation and maintenance service for ventilation, air conditioning, heating & electrical systems.

We offer a range of engineering services throughout Essex and the South East of England.