Energy Efficiency

What you need to know

We Can Help Reduce Your Energy Costs

At Dean Willett & Sons we always maintain the highest quality of installations, coupled with incorporating constant improvements to embrace technology which results in energy saving.

We are fully experienced in all aspects of heating, and with over 40 years of experience in plumbing and heating. Dean Willett was the senior lecturer at Grimsby college and trained school leavers, apprentices, and mature students in all aspects of plumbing and heating certification.

Our company has been providing heating and hot water solutions in the Grimsby and surrounding areas for over 30 years.

As a local company we understand our customers needs regarding heating and hot water. We know the solutions to help reduce the cost of the continuing rising prices with gas and electricity. Home Energy efficiency is the number one question we address every day. We have solutions and depth of knowledge and experience to get the most from your gas boiler and heating system.

Did you know over half of our energy bills spend goes on heating and hot water?

Turning your heating down by 1°C can save you around £105* a year on your bills.

*Estimated figures correct as of April 2022. Source:

Dean Willett & Sons Hints and Tips

Please contact us for your boiler upgrades and heating efficiency advice.

Reliably Inefficient?

In most instances you may find that your trusted boiler in your home depending on the age, could still be very reliable, and has served you, and your family well.

You may well have great knowledge of how it works, and amassed a number of spare parts to keep your boiler running into the future, in anticipation of any problems which may occur.

However, the boiler is “reliable but inefficient”, compared to a new condensing boiler, and using more technically advanced controls.

Efficiently Reliable

This is the where you need to be positioned today. A new Worcester “A” rated boiler performs and can achieve over 90% efficiency. The controls selected to operate with the boiler are equally important. The controls need to be equipped with integral automatic adjustments, such as temperature measuring efficiency features (load compensation) as standard.

Controls that offer more than “delayed start” will mean greater efficiency savings in the future.

These controls will increase efficiency by +3%, when fitted with a new condensing boiler, to positively maintain the heating temperature, and efficiently utilise the timed control programming.

With the cost of living rises highlighted today in all aspects of the news, an "Efficiently Reliable” heating system is where you need to be right now.

What Our Customers Say

Lauren Blanchard
Lauren Blanchard
Dean fitted a new boiler for us. He provided fantastic service from start to finish. We would highly recommend.
Charles Fawn
Charles Fawn
Good price Excellent work Punctuality Very informative Nice and easy professional approach throughout installation a pleasure to have in our home.
Jeanette Owen
Jeanette Owen
My good dear friends live in kirminton I was looking for a plumber and came across Dean on Google and so happy I did he was absolutely fantastic Dean comes with a wealth off experience I just new my friends was in good hands Dean and is son did absolutely fantastic job with fitting new water tank plus he did some more work I will allways use dean from now on thank u so very much or and one more thing he was absolutely so fast to do the work which was fantastic 😊 thank u dean
Shirley Robson
Shirley Robson
Cannot praise enough. I now know who my long term plumber will be. Excellent job , polite and nothing was too much trouble.
Vanessa Asquith
Vanessa Asquith
Dean fitted our central heating system and radiators a few years ago now. Great service,punctual, clean and tidy,reasonable prices. Comes to service the boiler yearly now. Always professional and friendly and offers great advice.Would highly recommend 5 * company.
Katie Hallett
Katie Hallett
Had our entire heating system replaced from an old coal fire system, Dean and team where incredibly polite and helpful, Fit us in just before Christmas so we wouldn't be left in the cold. Really appreciate the professionalism, we had a big job to do and it was done in the least invasive way and in a shorter amount of time than expected also very respectable of our pets while we were not home.
Katie Crowley
Katie Crowley
Dean replaced our church boiler. He gave us great advice as well as doing a great job, quickly. Will definitely use his services again.
Kerry Burnett
Kerry Burnett
Had a new boiler fitted by Dean was very professionally would definitely recommend nothing to much trouble very please with the new boiler, thanks Dean.
Karen Oliver
Karen Oliver
We found Dean to be professional at all times, did a great job and would recommend Dean, great workmanship.
Adam Stephenson
Adam Stephenson
After been let down by multiple local plumbers, contacted Dean! New boiler required & fitted and thorough investigation on several pressure issues!! Couldn’t fault his workmanship, professionalism and communication. Absolutely top job!! Thank you.

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