I would HIGHLY recommend AWS mechanical. I was looking to convert from oil to gas and did not have the money to do this upfront so I contacted a couple of companies which did not finance and for the most part were not interested in doing the conversion because it was not a commercial building. I was driving down jericho tpk when I noticed a plumbing truck which was fully wrapped in graphics so I gave them a call and they sent Brian down to give me a quote and helped me get financing. With in the month they installed a htp high efficiency boiler which replaced my boiler and water heater. Now my house is more comfortable then ever. I also noticed they went the extra mile to add in valved and other parts to make it more easier to service in the future.The install was VERY clean and professional.I did not even compare pricing but always remember you pay for what you get. I have family that are General contractors that offered to install a boiler for me but I insisted on a Professional plumber..... Plumbing is not a hobby.