Super happy.i recently contacted simply warmer to inquire about a boiler conversion from my old none working cylinder and tank boiler to a new Combi boiler.it was one of the best decisions I have ever made.from the second I was in contact with them they were super friendly.super helpful and made everything so easy.i contacted them on Monday.they sent a surveyor round on Tuesday.technician Wednesday.signed the forms on Thursday and they were there Monday morning to start work and had my old system ripped out and a new Worcester bosh Combi boiler fitted.new 22mm gas pipe.replaced a radiator and valves and fitted nest thermostat and had it all up and running in one day.and they sent a guy back the next day to brick up the old flu.i was amazed and super impressed.the engineers who installed it were really friendly and did a great job.everyone I spoke to and dealt with on the phone and in person were very helpful and friendly.and I really can't believe how fast the whole process took.i really am super impressed.i would without hesitation recommend simply warmer to anyone.i really cannot stress enough how satisfied and glad I am that I chose these.mark.manchester