At Marshall Oil, we know that even the best brand of boiler, burner, furnace, or water heater won't perform adequately if it is not properly selected, sized, and installed. This is why we offer our customers professional support through the entre process, from the first estimate to the fin al installation. We will inspect your home to determine with you the best solution for your household. Once you've approved the equipment, our experienced installation crew will promptly install the system to your needs. Once your new HVAC equipment is up and running, our work is only done when you are 100% satisfied.