Costello Windows Arvostelua 

Excellent service, from ordering to installation. Excellent professional door installer. Good quality work. Very happy with my door.

Excellent service,
Very professional
Very happy with the end product,
9 windows and back door fitted
Constello windows would highly recommend them 👌 And the installers were amazing 👏

Great experience all around , bought doors and windows from Costellow Wundows over the last 2 years and theyve been great ! Will recommend !

Jerry did a great job fitting both my Front and back doors. His helper was also very good. I am very happy with the doors. Thank you.

Ordered a half door for my cottage. Easy to deal with Costello Windows and the fitting was really smooth and fitter did a fantastic job. Even gave me advice on windows and patio door around the house. Highly recommend

The fitter who attended to the fitting of our new door was very thorough and tidy. We had very little to do after he left and he made absolutely certain before he left that we were happy with the door

Install of 22 windows in old house, fantastic service from start to finish and install team were great!

From dealing with the office to dealing with the fitters, I had such a pleasant experience with Costello Windows. The door is custom and turned out so much better than I had expected. The house is almost 200 years old and has been a nightmare to heat, the door has made such an amazing difference you can feel the heat retention almost immediately. Would recommend this company.

Our dealings with Costello’s was brilliant from start to finish. They made it so easy and were more than helpful. The two lads that fitted the windows were brilliant. Brendan in the office was very helpful with grant
Mary O’Malley

The final product is great. The guys who do the installation are great.
However, 1 of the 2 doors we had contacted to install did not work on day 1 due to a fabrication error. It didn’t close, which, since the Bronze Age, has been the principle function of doors. To get the installers to return to complete the installation of a door that did indeed close took 1 whole month of phone calls, texts, threats. When they did eventually come to fix the non- closing door, they did so at zero notice. Not good practice or manners.
So . . . The verdict on Costello Windows: product is top notch - if it happens to come from the factory in working order. If there are any post-installation problems, light a candle to St Anthony

Excellent showroom where I saw a wide range of options. All my queries were answered and at no point was any question too silly. The sales rep called to the house and everything was easy. The fitters arrived a few weeks earlier than id expected and did a solid job. This is a dusty job so id recommend removing or covering as much as possible from rooms. Its August and I already see the difference from my 25 year old doors and windows.

Costello were great to deal with. Getting a composite door was on the to-do list for a while and they made the whole process very easy. Most of it was done over the phone and they called to do measurements at a time that suited.
Time was taken to do installation correctly.
Door surpassed my expectations. I've more light, very solid door and it will be make difference in the winter in terms of heat loss. It is like a new house. Delighted.

James our installer did a great job, worked very hard and delighted with our new door. From ordering, measuring and installing this was a seamless process and very easy to make contact with the company and all questions answers easily and professionally. Higju recommend

Had repair work done to front door. Very pleased with work carried out. Staff were very pleasant and helpful. Would reommend.

Just Had Two New Doors fitted by Costello Windows excellent Job and very Helpful

Excellent service from Costello Windows. James is a brillant fitter who went above and beyond for us.

Excellent company to deal with.
I ordered a new front door which was delivered on time and within budget.
The door fitter did an excellent and neat job.
From sales to fitting this company is one of the best.
Highly recommend.

Costello supplied and fitted an external front door. The whole process was carried out efficiently and on time.
Breda or Brendan were always available to answer any queries and were very helpful.
The fitters did an excellent neat and tidy job.
I can highly recommend the company

Very happy with service from Costelloe Windows. James that fitted my new front door was polite and professional and above all he was meticulous about the way he carried out the job. I would highly recommend Costelloe Windows , James the fitter and also the man who came to do my measurements .

We were very happy with the service we received from day one to installation.
The men that fit the windows were very efficient and professional and left the place in great condition.