Your Guide to Converting from Heating Oil to Propane in New England: Top 25 Questions Answered
Switching your home heating fuel is one of those decisions that doesn't happen overnight, and that's a good thing. There's a lot to think through: what it costs, what changes in your home, how long it takes, and whether the timing actually makes sense for you. For homeowners in Maine, New Hampshire, Vermont, and Massachusetts, heating oil has been part of the picture for generations, and propane has become an increasingly common alternative.
At Dead River Company, we’ve spent generations helping our neighbors navigate home heating, so we’ve pulled together the 25 questions we hear most often from homeowners considering a conversion. Whether you're in the early research stages or ready to schedule an assessment, these answers are meant to give you a picture of what's involved, the benefits, the costs, the trade-offs, and the process, so you can make the call that's right for your home.
Is Converting to Propane Right for Me?
At Dead River Company, we provide both heating oil and propane, so our goal is simply to help you find the best fit for you and your home.
How do I know if switching from heating oil to propane makes sense for my home?
The clearest sign that a propane switch is worth looking into is when your current heating oil system is getting old, costing you more in repairs than it used to, or just not keeping up with a cold New England winter the way it should. Homes with older oil furnaces that are approaching or past the 15-to-20-year mark are natural candidates, especially if you're already facing a significant repair bill.
Beyond the equipment, the bigger factors are whether you have reliable propane delivery in your area and the state of your home's insulation and duct systems. If you're already thinking about upgrading your heating system anyway, that's often the best time to evaluate whether propane makes sense.
What types of homes or heating systems benefit most from a propane conversion?
Homes without access to natural gas — which describes a large portion of New England — benefit most from switching to propane, since it offers similar flexibility and efficiency without the infrastructure requirements.
Forced-air systems are generally easier to convert than hot-water baseboard systems, though both can work with propane. Homes that use propane for heating tend to get the most out of it when the heating system itself is high-efficiency, since that's where the real long-term value shows up. If your home also runs a water heater, a backup generator, or a gas range, consolidating everything to one source of fuel simplifies your life with a single, reliable delivery schedule from our team.
Is propane a good fit if I don't have access to natural gas?
Propane is one of the most practical alternatives for homes that natural gas pipelines don't reach, which applies to a significant portion of rural and semi-rural New England. Unlike natural gas, propane doesn't require a connection to a distribution grid; Dead River Company installs the tank on your property and can manage your deliveries based on the weather and your actual usage. This means you get many of the same cooking and heating benefits of gas without waiting for infrastructure that may never come to your area.
How does propane compare to heating oil in terms of environmental impact?
Propane generally burns cleaner than heating oil, producing fewer particulates, less sulfur dioxide, and lower carbon emissions per BTU of heat generated. That doesn't make it a zero-emission fuel, but it does mean a meaningful reduction in the immediate air quality impact in and around your home.
Propane is also non-toxic and won't contaminate soil or groundwater if a tank leaks, which is a real consideration for homeowners with underground oil tanks.
Should I convert to propane now, or wait until my current heating oil furnace needs replacing?
If your heating oil furnace has solid life left in it and isn't causing you problems, waiting until it's closer to replacement often makes financial sense — you'll avoid paying for a system change before you get the full value out of your current equipment.
On the other hand, if your furnace is already aging, running inefficiently, or showing signs of trouble, converting sooner can mean lower heating costs and fewer emergency repair calls before a full replacement becomes necessary.
There's also a practical advantage to converting during a planned project rather than an emergency: you have time to get multiple quotes, compare equipment options, and take advantage of rebates or financing. The right timing depends on your current system's condition and how long you plan to stay in the home.
The Conversion Process, Step by Step
Knowing what to expect during a propane conversion makes the whole process a lot less stressful. Here's what happens from the first call to the first full tank, and what you'll need to coordinate along the way.
What is the step-by-step process for converting from heating oil to propane?
A propane conversion is a coordinated process that typically follows these steps: * Professional Assessment: Our technician evaluates your current system to determine if your heating oil furnace or boiler can be converted with a burner swap or if a full equipment replacement makes more sense. * Coordination: Once you've settled on an approach, our team will coordinate tank placement and delivery logistics while our expert technicians handle the equipment work, new gas lines, and venting. * Tank Decommissioning: Your old heating oil tank is properly decommissioned—either removed from the property or filled and abandoned in place, depending on town requirements and whether the tank is above or below ground. * Testing and Calibration: After installation, the system is thoroughly tested for leaks, combustion efficiency, and thermostat calibration before the final sign-off. * Completion: Most conversions take one to three days for the physical work, though scheduling and permitting can add time to the overall timeline.
Can I convert my existing heating oil furnace or boiler to propane, or do I need a whole new system?
In some cases, yes — a qualified technician can swap the burner on your existing furnace or boiler for one designed to run on propane, which is generally less expensive than replacing the whole system. The catch is that this only makes sense if your existing equipment is less than ten years old and in solid working condition; putting a new burner into a furnace that's already struggling isn't a great investment.
If your system is older or you're ready to upgrade efficiency, a new high-efficiency propane furnace or boiler is usually the better long-term move — modern propane systems can reach 95% to 98% AFUE (Annual Fuel Utilization Efficiency) ratings, which translates to real savings over time. Our technicians give you a clear, honest recommendation based on the actual health and age of your current system.
How long does a propane conversion typically take?
For most homes, the actual installation work takes one to three days once everything is scheduled and materials are on-site. A simple burner conversion on a relatively modern furnace can sometimes be done in a single day, while a full furnace replacement combined with new gas line work and heating oil tank removal may take two to three days.
Keep in mind that there are some unpredictable elements that can impact your timeline from your first phone call to a completed installation — permitting, equipment ordering, and scheduling can add one to three weeks depending on the season. Because we have local teams across New England, we work to get your installation scheduled as efficiently as possible.
If you're converting in the fall just before the heating season, it's smart to start the process early, since demand for installations tends to spike when temperatures drop.
What happens to my old heating oil tank when I switch to propane?
Your existing heating oil tank can't simply be left full or abandoned without proper handling. It needs to be decommissioned according to your state's regulations, which vary across Maine, New Hampshire, Vermont, and Massachusetts. Dead River Company handles that process properly, ensuring your old tank is removed or retired according to state environmental rules.
Above-ground tanks are typically drained, cleaned, and removed from the property, while underground tanks may be removed entirely or decommissioned in place by having the interior cleaned and filled with an inert material like sand or foam.
Underground tank removal often requires a soil assessment to confirm there's been no leakage or contamination, which adds time and potential cost if any remediation is needed.
What permits and inspections are required for a propane conversion in New England?
Most propane conversions require at least a building or mechanical permit for the heating system work, plus separate permits for tank installation and, in many cases, heating oil tank decommissioning. The specifics vary by town and state; Maine, New Hampshire, Vermont, and Massachusetts each have their own requirements, and local municipalities may add another layer on top of that. Our team handles the permitting and coordinates the necessary inspections, so you don't have to navigate that process yourself.
Costs, Financing, and Incentives
The financial side of a propane conversion is often what takes the most time to evaluate. Here's what you can expect to spend, where money-saving opportunities exist, and how to make the numbers work for your budget.
What is the total cost range for converting from heating oil to propane, including equipment and installation?
A basic burner conversion on a compatible existing furnace, including labor, typically runs in the $2,000 to $4,500 range, while a full system replacement with a new high-efficiency propane furnace or boiler can push the total into the $5,000 to $10,000 range or higher depending on your home's size and any additional work needed for venting or gas lines.
Heating oil tank decommissioning adds another layer of cost — above-ground tank removal might run a few hundred dollars, while underground tank removal with soil testing can cost significantly more if contamination is found.
On the propane storage side, many suppliers lease tanks for an annual fee rather than selling them outright, which reduces upfront cost. The most accurate number for your home will come from scheduling a free, on-site assessment with a Dead River Company expert for a detailed quote that accounts for your specific layout.
Are there rebates or tax credits available for switching to a high-efficiency propane heating system?
Yes, there are several potential sources of financial assistance worth exploring before you start your conversion. High-efficiency propane furnaces and boilers that meet certain AFUE thresholds may qualify for federal tax credits under the residential clean energy and home improvement incentive programs, so it's worth checking what's currently available through the IRS or a tax professional.
The DSIRE (Database for State Incentives for Renewables and Efficiency) database is a solid free resource for finding state-specific programs in New England. Propane equipment manufacturers sometimes offer their own rebates on qualifying high-efficiency systems, and some suppliers will throw in installation credits or free first fills when you sign a delivery contract. These programs change frequently, so ask our team about rebates or tax credits currently available in your area so we can help you find every possible saving.
Do propane suppliers offer financing for conversions?
At Dead River Company, we offer flexible financing options that can let you spread costs out over time. Some financing offers are tied to signing a delivery contract, so it's worth reading the terms carefully to understand what you're committing to.
Independent financing through a home equity line or personal loan is another option some homeowners use, particularly if they want more flexibility down the road.
Is a propane conversion worth the upfront cost in the long run?
For many New England homeowners, the answer is yes; but it depends on your specific situation, and anyone who gives you a one-size-fits-all guarantee isn't being straight with you. The financial case is strongest when you're replacing an old, inefficient heating oil furnace with a high-efficiency propane system, because the efficiency gains alone can meaningfully reduce your annual fuel use.
Fuel price comparisons between propane and heating oil shift over time and by region, so long-term savings estimates should be looked at closely. What tends to hold up more consistently over time is the reduced maintenance burden of propane systems, the convenience of our automatic delivery and price-protection programs, and the versatility of having one fuel source handle multiple home systems. If you're staying in your home for the long haul and your heating oil equipment is aging, the numbers generally work in your favor.
Are there any hidden costs I should know about before committing to a propane conversion?
Underground heating oil tank removal can be more expensive than above-ground removal if soil testing reveals contamination. Gas line work, venting modifications, and electrical upgrades can also add to the base cost. Our experts will walk you through all of these potential variables before you commit to a project to make sure you have the clear, detailed answers you need.
Propane Equipment, Efficiency, and Fuel Costs
Understanding your equipment options and how propane performs as a fuel will help you make a more confident decision — and choose the right system for your home's needs.
What propane furnace or boiler options are available, and how do I choose the right one?
The main choice is between a forced-air propane furnace (which pushes heated air through ductwork) and a propane boiler (which heats water for baseboard or radiant systems), and that decision is largely dictated by what type of heating distribution your home already has.
Within either category, you'll choose between single-stage, two-stage, and modulating burners; modulating systems adjust their output more precisely to your home's actual heat demand, which improves comfort and efficiency but costs more upfront. High-efficiency condensing units, which recover heat from exhaust gases, are where AFUE ratings in the 95% to 98% range come from — and those efficiency gains are realized over time.
Our technicians will size the unit correctly for your home's square footage, insulation level, and climate zone, since an oversized or undersized system will underperform regardless of how efficient it is on paper.
How efficient are propane heating systems compared to older heating oil furnaces?
Modern high-efficiency propane furnaces and boilers typically achieve AFUE ratings between 90% and 98%, meaning nearly all of the fuel you pay for gets converted to useful heat. Older heating oil furnaces, by contrast, often run at 75% to 85% AFUE (sometimes lower if they haven't been serviced regularly).
Switching from a 78% AFUE heating oil furnace to a 95% AFUE propane system is a substantial efficiency jump that translates to real savings on your heating bills, even before factoring in fuel prices. Propane systems also tend to stay cleaner and maintain their efficiency better between tune-ups than heating oil systems, which can accumulate soot and require more frequent servicing to stay at rated efficiency.
How does propane pricing compare to heating oil, and what affects the price?
Propane and heating oil prices both fluctuate based on crude oil markets, seasonal demand, and regional supply conditions, so any comparison is a snapshot rather than a permanent picture.
Propane is typically priced per gallon at a lower dollar amount than heating oil, but because propane contains fewer BTUs per gallon than heating oil, you need more gallons of propane to produce the same amount of heat — so a straight per-gallon comparison doesn't tell the whole story.
When you factor in equipment efficiency, a high-efficiency propane system often delivers comparable or better heating economics than an older heating oil system, but comparing a newer propane system to a newer heating oil system is a closer call that depends on regional pricing at any given time.
To take the guesswork out of your winter bills, Dead River Company offers flexible payment and price-protection programs that give you control of your budget for the season.
What size propane tank do I need for my home?
For whole-home heating, most single-family homes in New England use either two 120-gallon tanks or a 500-gallon above-ground tank, with the larger size being common for homes over 2,000 square feet or for households running multiple propane appliances. A 500-gallon tank reduces the frequency of deliveries and often comes with better pricing from suppliers who prefer fewer trips.
If you're adding propane appliances like a water heater, range, or backup generator, your supplier will size the tank based on your total estimated annual usage across all appliances. Underground tanks are also available and are a good option if you prefer not to see the tank from the house or yard — they're more expensive to install but look better and can be particularly well-suited to properties with certain layouts.
Can propane fuel other appliances beyond my heating system?
Propane is a versatile fuel that can run a range of home appliances from a single tank, which is one of its practical advantages over heating oil. Common additions include propane water heaters, gas ranges and cooktops, propane dryers, outdoor grills and firepits, pool or spa heaters, and standby generators — the last of which is particularly useful in New England, where ice storms and nor'easters can knock out power for extended periods.
Running multiple appliances off one fuel source can simplify your delivery schedule and sometimes improve your pricing, since your annual usage volume goes up. If you're planning to add appliances beyond your heating system, let us know during the initial tank-sizing conversation so the storage capacity is planned accordingly.
Service Plans, Delivery, and Ongoing Support
Choosing the right propane supplier is just as important as choosing the right equipment. These questions cover what to look for in a long-term energy partner and what good service should look like day to day.
How does propane delivery work, and will I ever run out?
Most propane suppliers offer automatic delivery, which means they track your usage based on how cold it's been and how much fuel you typically use, and schedule a delivery before you run low — without you having to call. At Dead River Company, this is the option most of our customers use and the one that most reliably prevents running out, since we are actively managing your tank level.
Will-call delivery, where you monitor your own gauge and request a fill when you get low, is another option but requires more attention on your part and can leave you short if a cold stretch catches you off guard.
Running completely out of propane requires a pressure test before it can be restarted, so staying on top of your tank level matters.
What should a good propane service plan include?
A good service plan should cover annual system tune-ups and inspections, priority service response when something goes wrong, and protection for the major components of your heating system — burners, heat exchangers, controls, and ignition systems.
Emergency response availability is an important piece: if your heat goes out at 2 a.m. in the middle of winter, you want to know that someone will actually pick up the phone and get to you that day. Our service plans are designed with this in mind, giving you priority scheduling and 24/7 support when you need it most.
What should I look for when choosing a propane supplier in New England?
Local presence matters more than some people realize. A supplier with offices and drivers throughout Maine, New Hampshire, Vermont, or Massachusetts can be a lot more reliable than a national company routing deliveries from a distant hub.
Because Dead River Company is rooted in these communities, we can provide the local responsiveness and infrastructure that out-of-area operators often can't. We focus on providing delivery options that work for you, a clear and transparent pricing structure, and contract terms without surprises. The relationship you have with your propane supplier is genuinely long-term, and we work hard to make sure you can count on us year after year.
What maintenance does a propane heating system require?
Propane heating systems are generally lower-maintenance than heating oil systems, but they're not zero-maintenance. An annual professional tune-up is still the right standard for keeping your system running safely and efficiently.
A tune-up typically includes cleaning the burner and heat exchanger, inspecting the venting and flue, checking ignition and safety controls, and verifying that the system is operating properly. On your end, replacing air filters regularly and keeping the area around your furnace clear are simple steps that help the system breathe. Our technicians will also check your propane tanks and connections periodically as part of delivery or service visits to ensure everything is running as it should.
What happens if my propane heat goes out in the middle of a New England winter?
First thing: call us. Propane heating system issues should be handled by technicians who know the equipment and the fuel. If your tank has run empty, don't attempt to restart the system yourself; a licensed technician needs to purge the lines, check for leaks, and do a pressure test before relighting the system, which is a safety requirement.
If the issue is equipment-related (an ignition failure, a control board problem, or a venting issue) a service plan with emergency response coverage means you should have someone on the way within hours, not days.
The best defense against a winter heating emergency is 24/7 emergency support and a service plan that covers the most common failure points.
Whether it's your fuel, your equipment, or your service needs, our goal is always the same: lasting comfort and peace of mind. You can count on the experts at Dead River Company to show up when you need us, because New England weather doesn't quit, and neither do we. Have more questions? Contact us to talk to a local expert.
