Costello Windows Reviews 

Breda was an absolute star, who works in the office - so efficient and kind!

Absolutely delighted with the door and service received.

Back door fitted, happy with door having had a front door fitted before. Unlike the experience with the fitting of the front door, James (kerryman) fitted our back door, he did an excellent job, thanks James

Thank you so much to John and all at Costello windows! Amazing service, very happy with finished product. Definately reccommend 😊

I love my new door! The whole experience was excellent from getting in touch with the Costello team to the fitting of the new door ! James Keane who fitted the door was extremely professional and did a fantastic job , the door looks amazing , thanks again !

Product is good but the finish is just awful. Silicon overused and covering a lot of the frame. Window boards damaged. The plaster inside the windows is dreadful, uneven/ unsanded and chipping off. Cracks have formed already. Gaps between the window board and window. Windows not level. Would avoid. Will take a lot of work to get a decent finish which they should have done.

My experience,it's difficult to get a company to fit a few windows in Galway maybe impossible so I tried a Web search and found Costello Windows. From start to finish the communication was very good. Was asked what I wanted,the balcony window fitted is excellent and it makes the world of difference(closed off balcony)the other window in the bathroom badly needed to be replaced,again I was asked for my preference it was made and professionally installed and its amazing. Thanks to everyone at Costellos

Very happy with the workmanship and quality of our new windows and doors. Our fitters Tim & PJ (Peter) were excellent and so obliging. Overall extremely happy with the whole process from start to finish. Caroline and Seán

We are delighted with the job, great service and a perfect finish. The men even fixed our existing dodgy door. We would highly recommend Costelloes
Liz and Alan Griffith Carron.

Our fitter came with our new front door, and had it installed and working within a few hours. Very professional, top quality work and product. I highly recommend Costellos.

Job was done perfectly, l so happy. Recommended,this company and lads they work quickly and clean.

Very pleased with my windows and doors,
They were fitted so well with no mess
I'm a very happy customer

I was delighted with my experience from deciding to have new windows to today cleaning them for the first time. Everyone I spoke to on the phone was nice friendly and helpful and those that called to my home were lovely. I'm very pleased with my windows although given that the weather is so sunny at the moment I can't yet comment on the improvement from a heat retention view point...

Great service & installation 👍🏻 very clean and tidy and made good the walls around the door after, all in all very happy.
The door creator on their web site is very handy as well very easy to use.
Would recommend Costello to anyone thinking of a new front door, even moved installation date forward as we were expecting a baby around the original date.

Excellent work by Costello Windows, big thank you to John and Jack the 2 lads flew through the installation in no time, had 3 doors and 6 townhouse sash windows and a couple of large picture windows made up and fitted within 2 months of ordering, very impressed with how fast they were good to go.
The lads were great operators fast, tidy and very accommodating to any questions throughout. Also thanks to Hayden who was very helpful with the initial consultation. Great value, highly recommend, delighted

Great company to deal with. Got a new front door with side panels. Service from start to finish was impeccable. Workmanship and fitting on the day was second to none and left everything neat and tidy.

Your fitter was good at what had to be done and cleaned up when finished

The Team were really helpful in picking out my doors and very fast service with having my doors fitted without any issues. I am very satisfied with the service.

In todays fast paced society it is heart warming to come across a company, that puts it's customers first. Hybrid Costello Windows is one such company. From the moment I made my initial contact, and throughout the sales and instillation process, I found the whole experience effortlessly.

Not only did they beat two other competitors on price, but they delivered within the time frame and completed my two bedroom windows and patio door to my full satisfaction. A big thank you to Hayden, and all for a job well done.

I have no hesitation in recommending them for your future renovations.

Very easy to deal with and prompt in delivery

We have twice contracted Costello. 1) to remove and replace windows in 2022 and 2) a front door in 2025. Personnel promptly arrived to measure up and describe the process from ordering to installation in detail. Provide a quotation and commit to a deadline date. Costello delivered. We are very satisfied with their professionalism.