Costello Windows Arvostelua 

I couldn’t be happier with the service and quality provided by Hybrid Costello Windows. They recently replaced four windows and a patio door in my home, and the entire experience was seamless from start to finish.
​A huge shoutout to Gerry and Jack, who handled the installation. Their professionalism and attention to detail were second to none. They arrived on time, worked efficiently, and took great care to ensure everything was perfectly fitted and sealed. It’s rare to find a team that is not only highly skilled but also incredibly respectful of your home—they left the workspace spotless once the job was done.
​The difference in both the look and the insulation of the house is already noticeable. The windows and patio door are high-quality, sturdy, and look fantastic. If you’re looking for a reliable, expert team for your home improvements, I cannot recommend Hybrid Costello Windows enough.
​Highly recommended!

Very happy with the quality of my new windows and door from Costello Windows. Great service from start to finish. The fitters also did an excellent job from installation to the cleaning up after. Would highly recommend 👍

Very good experience with Costello windows fitter’s were helpful and very clean i would highly recommend them thanks again to Gerry and Jack

We got 2 great workers to do our job and they were first class at their job

Great service offered by Costelloe Windows. Got 5 new windows fully fitted within a day and a half. Had great dealings with Hayden in sales and Justin in the showroom. Jerry and Jack who fitted the windows were super and very informative on the operations and care of the windows. Would recommend Costelloe windows

For me the success of installation of six windows in my terraced home was of major importance and I view that overall success lies between the interactions of many facets of the company.
I visited the showroom in Glin Co Limerick which built confidence in the ability of Costello to deliver quality in product and service. Next step was my contact with Breeda which firmed up that confidence due to her high level of professionalism throughout this venture from beginning to end . . Her excellent communication skills, straight talking, honesty and obliging nature all built great confidence and trust between this consumer and vendor. In follow up windows were accurately measured by Derek. The next stage brought me to the office of the manager which unfortunately for me was both unmanageable & unprofessional and rattled all the confidence and trust I had built up over the months previous. I now was in absolute fear of what the outcome may be in the short and long term which grew when I started to read a mixed bag of reviews on line.
Pedro and his dad arrived to install my windows and delivered a full service that was highly skilled from start to finish. They were respectful of me and my property moving through my home with care cleaning up every last bit of dust & debris. Tiled finishes around windows remained fully intact and unmarked following their removal of windows as was also the outside surround of the windows. Their attention to detail in the installation of new windows had to be seen to be believed , meticulous and excellent in all areas. They had no issue with me asking questions, sticking my nose in checking and re rechecking and offering a helping hand. They needed to return on day 2 to finish which was delayed due to traffic blockades and fuel shortages, Pedro text me and kept me updated over that time. Google translate was of great assistance to us both. If this team of Pedro and his dad are allocated to you the customer to install new windows at your home be assured of them doing their best to secure the result you had hoped for.
For me as your customer to you the management section at Costello windows I say communication , listening , honesty , taking responsibility and ability to apologise all would go a long way to marking this venture up to a 10 out of 10 experience for all future customers coming your way

I recently had Costello Windows replace my front door and install a brand-new garage door, and I couldn’t be happier with the results.They arrived exactly when they said they would. Both the front door and the garage door look fantastic. You can tell they take pride in the installation—everything is perfectly aligned and operates smoothly.
Once the job was finished, the team did a thorough sweep. They left my property spotless, taking all the old materials and debris with them.
It was a really great job from start to finish. If you’re looking for professionalism, reliability, and high-quality installs, Costello Windows is the way to go!

We ordered six new windows and a front door before Christmas. The price we were quoted was really competitive.
The installers arrived last week to do the retrofit.
The quality of the windows and new door were excellent, they also replaced the window boards which look fantastic.
After the windows and door were fitted, the two lads doing the installation spent a full day making sure the re-plastering, window board fitting and clean up around the house was top class.
Everyone we dealt with were really professional, knowledgeable and answered all our questions. Spending as much time as needed to make sure we were happy with each step of the process.
We would highly recommend Costello windows.

Had a door fitted by Costello windows- no issues and very positive experience with the company.

Delighted with my new Palladio door fitted today. Process from start to finish with Costello Windows from ordering to installation was very professional and lads did a great job installing door.

Workers with good knowledge of the work. Did a very good work on the fitting, good handling and attention on detail, happy with the finish.

Would highly recommend Costello windows. From the first phone call to the installation of my new front door the customer service, quality of work, value for money was second to none. Breda was great in the office and James the installer was fantastic!! Well done Costello windows

We’ve just had new windows fitted over the past few days and we couldn’t be happier with the whole experience. John went through the sales/selection part and Gerry and Jack installed them - they were absolutely fantastic from start to finish. They were friendly, professional, and genuinely lovely to deal with – nothing was too much trouble for them.

Their workmanship was excellent and they took real care to make sure everything was finished to a high standard. The windows look amazing and have completely transformed the house. We’re so pleased with the result and would highly recommend them to anyone considering new windows. Thank you again, Gerry and Jack and all at Costellos!

Great to take over €20,000 but can’t fix a fire exit window. Have highlighted this issue since November last year..have emails and recordings of phone calls should anything happen.

The fitters were very friendly they explained everything clearly. They put the manager on the phone and he asked if I was satisfied with the door. They cleared all the mess up and left the place tidy. Iam very pleased with the new door and would definitely recommend them to anyone

Very professional and knowledgeable, excellent after-sales service too

This is a review of two parts really, if you need your windows or doors in a reasonable or as promised 10 to 12 weeks then shop elsewhere. I paid the deposit on September 15th with assurance that my order would be fitted before Christmas, the order was finally fitted February 28th.When I rang in early January i was fobbed off and told basically they would be ready when they were ready.Second issue was when the product was first delivered in February the door was badly scuffed and damaged, which someone had tried to hide using green marker, I refused to accept the delivery and then about a week later I had to drive down , approx 90 minutes journey to come to some agreement as to when they would bring back the repaired door.When the door finally came back there was still a small mark on it which, when I pointed it out to Bruno he told me if they had to bring back the door again i would be charged an additional 400 euros and also had no right to a refund. The fitter on site used a cleaning agent and the afore mentioned green maker to fix the issue. I found Bruno to be very confrontational and unpleasant whenever I had to deal with him, the problem was all theirs but he made it seem to be all mine, I do not appreciate being talked over by someone I'm trying to resolve an issue with. On the plus side the fitters were excellent, pleasant to deal with, did a great job and left very little mess. All in all I feel the company needs to up it's game in public relations and complaints handling. BUYER BEWARE.

Couldn't recommend these high enough windows were excellent. Doors were fabulous. Great price! best people to deal with

Delighted with our new door from Costello Windows. Breda, Brendan were very helpful and professional to deal with. The fitter James was brilliant, did such a clean job and was very professional. Would highly recommend Costello Windows