I am surprised that a ton of people have gas oil heating systems plus fireplaces; They are not the safest or most efficient furnace out there; Yes, running a gas furnace is much cheaper than an electric option. You also don’t have to worry about power outages plus having no heating, however, the gas is not as efficient as electric, however gas gets burned plus churned, however not 100% of the gas you purchase is used for heating adore with electric, also, the upgrade of the gas furnace is way more than an electric model. Gas hookups plus a flue system is installed. This makes for a higher expense plus more time invested. The worst with gas heating is the safety hazards though, but if you are not on it with cleaning the heater, it could entirely hurt your family. The first is with carbon monoxide. If you don’t change your oil furnace filter daily, the dirt gets into the oil furnace, then once a oil furnace runs dirty, it starts internally heating. The furnace then can overheat itself to where the heat exchanger inside the system cracks. A microscopic crack unseen by the eye, can cause major complications. The stinkless, tasteless plus white gas known as carbon monoxide can seep out into the condo without a person knowing, then prolonged exposure leads to hospitalization plus can even kill a person; Suppose the furnace overheats but doesn’t crack the exchanger. It could genuinely catch on fire. That might even be worse. Now you need a modern heater, condo plus your family could be killed by that too, electric heating is just so much safer.