We used Day and Night Mechanical Solutions Inc for the first time recently and we were a little disappointed with the service we received from them. We had them install a hot water heater/furnace combo for us and although we are pleased with the unit itself, the communication throughout the whole process was not great. First, the length of time to get the installation done was severely underestimated, it took about 3 times longer than they told me it was going to take. Secondly, the installation team that came out was not very polite to my wife. Lastly, they forgot to leave us an installation manual, meaning we couldn't pass inspection until they were able to get one out to us. Overall, I hope they can improve with this feedback.