Introducing Heat Seal, the non-permanent MONEY-SAVING
window insulation kit that locks in the heat & keeps out the cold.
QUICKLY & EASILY form an airtight seal on ANY window
without tools or DIY skills to ELIMINATE heat loss &
SAVE on your energy bills.
Heat Seal’s invisible design means you won’t be able to see it – but you
will FEEL the difference – in your home AND in your pocket.
Plus, it removes effortlessly without a trace, leaving ZERO damage to your
surfaces – you’ll NEVER even know it was there!
Stay Warm While Saving Money
Lock In The Heat & Keep Out The Cold
Quick & Easy Installation
No Tools Or DIY Skills Required
Will NEVER Damage Your Surfaces
HUGE Kit Enough For Several Windows
Stop Wasting Heat &
Throwing Money Out
Of The Window
Stop Wasting Heat & Throwing Money Out
Of The Window
Insulate your windows, turn the
thermostat down & save money
Get The Warmth &
Comfort Of Double-Glazing WITHOUT The Price Tag
Get The Warmth & Comfort Of Double-Glazing WITHOUT The Price Tag
Fix draughts fast, reduce
condensation & keep the heat in
your home at a fraction of the cost
Invisible Design Won’t Ruin The Appearance Of Your Home…
Invisible Design Won’t Ruin The Appearance Of Your Home…
You won’t be able to see it – but you’ll feel the difference
It’s So Easy To Install,
You Can Do It Yourself In MINUTES…
WITHOUT tools or
DIY skills needed to start SAVING money
Simply measure, cut & stick
Easily remove wrinkles with a standard hairdryer
Removes Quickly
& Easily Without
ANY Damage – You
Won’t Even Know
It Was There
Removes Quickly & Easily Without ANY Damage – You Won’t Even Know It Was There
The non-permanent,
money-saving, seasonal solution
to heat loss
H-U-G-E 5ft x 32ft
(1.6m x 10m)
Coverage, Enough
To Insulate Several
Draughty Windows
H-U-G-E 5ft x 32ft (1.6m x 10m) Coverage, Enough To Insulate Several Draughty Windows
Perfect for windows, patio doors & conservatories
2600000+
2600000+
Happy customers love our...
Happy customers love our...
Happy customers love our
We're Rated Excellent
4.6 out of 5
129,495 reviews
Get your Heat Seal
today and SAVE 1/3
USUALLY £22.99
JUST £14.99
Or pay it in 4 with 
Or pay in 30 days with 
Order now for guaranteed delivery by:
Sunday 23rd February
Insulate your windows & save money
Why shop with us?
2 day delivery guaranteed
Family owned & run
British business (110 staff)
129,495 5-star reviews
Over 2.6 million happy customers
2 Day
Tracked Delivery
from family-run UK business
No Quibble 100-Day
Money Back Guarantee
UK based customer services
Hassle-Free
Returns Guarantee
Returning items is quick & easy
Customer Reviews Powered By
We're rated
Excellent
Based on 129,285 reviews on
Verified
Janet Dyet, 09 February
MustHave Ideas is an excellent …
MustHave Ideas is an excellent company had quite a lot of different things from them alway excellent quality very helpful keep you informed evey step of the way excellent service excellent company
Verified
A Harper, 08 February
I've purchased items before & tbh as a…
I've purchased items before & tbh as a small family business I trust them totally, a bit like buying from a friend.
Verified
KiwiJill66, 07 February
Fantastic UK company with great customer service.
I have been a regular, if slightly infrequent, customer of Must Have Ideas for many years now. Every product I have purchased from them has been excellent quality and really very useful. Their customer service is exemplary and delivery is fast. I love seeing what's new on their website. Keep doing what you are doing - you're doing great!
Verified
Gary , 06 February
This is a well run shop with great…
This is a well run shop with great products at decent prices and a very good delivery, I ought to know as I have bought quite a lot of products from them. I rate them 10 stars.
Verified
Vanessa Butcher, 06 February
PERFECT PURCHASES.
Everything I have bought from you has always been perfect to meet my needs and I will be placing many more orders with you, you are a first class company.
Verified
Peter, 28 January
Lightning
Good product good service quick delivery very happy customer
Verified
EUGENIE, 25 January
Top Class items from a Top Class business.
Great items - easy website to use and navagate around; sensible prices with lots always on offer; quick delivery; well packaged and items are fab!
Verified
Mary Dobbie, 23 January
Absolutely Delighted with the whole …
Absolutely Delighted with the whole process of my purchase from this company ..I will certainly buy from them again
Verified
Hilary, 17 January
All items ordered are of very high…
All items ordered are of very high quality and were delivered within two working days. Excellent service. Looking forward to placing my next order. Well done Amy and staff!!!! 5 stars 🌟 to you all.
Verified
Shaun & Emma, 12 January
Great boxes.
Excellent item, will be buying more, quick delivery & good communication, 5*****
Verified
minisport, 12 January
I WAS VERY IMPRESSED WITH THIS…
I WAS VERY IMPRESSED WITH THIS COMPANY--VERY GOOD FROM START TO FINISH--EXCELLENT COMM
Verified
Mitzy, 12 January
Very fast delivery and product works as…
Very fast delivery and product works as described. 5* AAA++++++
Verified
Maria Harman, 12 January
Amazing
It was very simple to use and the effects are amazing. Our internal conservatory wall looks fantastic. Very pleased with the outcome. Thank you.
Verified
Walter Hanna, 11 January
1st class experience
My experience was 1st class and i was very happy with the response that I got back from Amy it showed how grateful she was of my order.
Verified
Mr Playfair, 11 January
Exceptional company!
Exceptional company!
Verified
Jane Arnot, 11 January
Duster for radiators 1st Class
Must have ideas, They are a terrific company. What they say is true. I got my cleaner for radiators.1st class
Verified
Alexander Stewart Taylor, 10 January
Quick delivery
Quick delivery, product is 1st class
Verified
Paul Barber, 09 January
What a great company
I am so happy to have found MHI.The products are amazing and I can't fault any of the items I have purchased so far as they just make things easier all around the home.
Verified
Alan Federman, 31 December
i have used must have for over a year…
i have used must have for over a year and have always found this company to be honest reliable and 100% and highly recommend 5 star 🌟
Verified
Philip Bradley, 10 December
Great ideas that actual work
Great ideas that actual work. Great company to deal with. Very helpful when things dont go quite right. Highly recommended