I used Colin and Derek recently for a gas boiler and heating control upgrade and I found them very good to deal with. They came out soon after me contacting them to give me a free consultation and quote. They made some very good suggestions which I took on board. The work was started soon after and completed on time. I also availed of the SEAI grant and the credits from Electric Ireland so overall I saved over €1,300 on the total job. An unbelievable offer and my tenants commented on how happy they are with their new energy efficient and very quiet new boiler!! I would highly recommend giving the lads a call for a free consultation!