This was a DIY project for a tankless hot water heater. I had already hook up the my new tankless hot water but I hadn't install the gas line yet, I was a little wary installing it myself. I was given a referral about Element from a friend. Decide to give them a try and I'm glad I did. They save me a bunch of money on my DIY project. I worked alongside Mark during the gas line install and I ended up learning alot including how to size a gas system to code from him. Mark got my DIY project up to par, inspected everything from start to finish to make sure the water heater was running optimally and certified it for use. I appreciate all your help on my project. Thank you again