I have to disagree with the only other review here on HomeStars, as I am totally satisfied with the work done by this contractor and would use again. Theo from Heatco installed my gas furnace and hot water heater. (American Standard and Rheem) Not only was the price better than quotes from other installers (including Costco recommended installers), but the service and installation were first rate. (professional, neat and efficient). Theo hooked up an accessory water pump, reattached my NEST thermostat and ensured everything was working, All this in an old house with tons of unexpected functional surprises under the old furnace and water heater. Time will tell now but I feel comfortable with Theo's track record of honest service and attention. I recommend his services.