This is the very BEST money I’ve spent on my 100+ year old villa. The difference was instant. My home doesn’t get to 5-6 degrees anymore (sometimes lower). My home doesn’t take long to heat, also the heat is retained and there have have been days during winter when I didn’t light the fire. Having CPOD and Rheumatoid Arthritis anytime is no joy, however this winter in a warmer home my pain symptoms were greatly decreased. I’m very very HAPPY. The government should fund this.