Written on: December 9, 2025
One of the biggest investments you make in your home is your heating system. So when it’s time to replace your boiler or furnace, you want equipment that will last, perform well, and keep your energy bills under control. In our region, oil heat has long been the most common—and most trusted—choice for staying warm through cold, damp winters. But with a lot of push to electrify in our area, some homeowners may wonder whether oil heat is still the right option.
In fact, oil heat is cleaner than ever, and today’s oil heating systems are better, cleaner, and more efficient than ever.
Heating oil has always been more cost-efficient than natural gas in terms of Btu content. Oil heat burns hotter than other home heating fuels—producing up to 40% more heat per gallon than propane and significantly more than natural gas. Electric heating systems just take much longer to reach a comfortable temperature and need more energy to maintain it—driving up your energy usage. That means electricity will cost you more.
Oil heat systems produce a steady, powerful supply of heat that will keep your home comfortable even when the weather is raw and unforgiving. Modern oil boilers and furnaces operate at incredibly high efficiency levels, meaning they extract more heat from every gallon of fuel. That translates into lower consumption and lower heating bills, without sacrificing comfort.
The oil used in homes today is dramatically different than the oil burned in the past. Thanks in part to the transition to ultra-low sulfur heating oil, particulate emissions have been reduced significantly from the already low levels of the past few decades. So how much cleaner is it? Traditional heating oil has a sulfur content of up to 4,000 parts per million. In contrast, ultra-low sulfur heating oil has a sulfur content of just 15 parts per million.
Because it’s so clean-burning, ultra-low sulfur heating oil improves the efficiency of your heating system—saving you money. It also helps your system last longer and reduces breakdowns.
Marandola takes it a step further, by delivering B5 Bioheat, an even cleaner and more environmentally friendly form of heating oil. Bioheat fuel is a blend of ultra-low sulfur heating oil and biofuels made from renewable resources such as animal fats, recycled restaurant oils and plant oils such as soybean. Bioheat emits up to 80% less sulfur dioxide as well as 20% less carbon dioxide than traditional heating oils.
If you haven’t replaced your heating system in 15 to 20 years, you’ll be surprised at how much technology has changed. Today’s high-efficiency oil systems offer:
Combined, these improvements mean your system uses less fuel, lasts longer, and keeps your home more comfortable throughout the heating season.
Some homeowners consider switching to a different fuel when replacing their heating system. But the reality is that, unless you are switching between propane and natural gas, converting can be extremely expensive, requiring all new infrastructure as well as new heating equipment.
Choosing a new high-efficiency oil system avoids these headaches. You keep the comfort you’re used to, cut energy consumption, and take advantage of today’s cleaner-burning technology.
Oil heat is far from outdated—it’s evolving to keep up with the times. With modern ultra-low-sulfur fuel and high-efficiency equipment, upgrading your oil heating system is one of the smartest investments you can make in year-round comfort and long-term savings. Find out why families and businesses in Litchfield County and beyond trust Marandola for their home heating needs, from expert installations to convenient services like automatic delivery (so you never have to think about calling for fuel) and budget friendly payment options that take the sting out of winter bills.
Contact us today and let us know how we can help you!