Prepared for Eileen, October 2026

Twelve winters, two ways.

Eileen, you were right to look closely at the numbers. Here is what the next twelve years look like, side by side.

See the two totals ↓

Twelve years, two totals

The oil side is an estimate; your actual gallons will change it. The plan side is exact.

Staying on oil

$54,250 about, estimate
Oil, 12 heating seasons estimate
$49,249
Replacement furnace good-deal price
$5,000

Your plan

$28,150 exact
$175 a month in year one rising 1.99% a year
$28,150

If the furnace costs the $7,000 you were quoted, the oil side is about $56,250.

Year by year

The oil side starts with the furnace bill, then adds a heating season of oil every winter. The plan adds one year of payments at a time.

Running totals by year, rounded to the dollar. Oil is an estimate; plan payments are exact.

  • Oil and furnace, solid line
  • Your plan payments, dashed line
Running total of what each option costs over twelve years Two lines. The oil line starts at $5,000 for the furnace and reaches about $54,250 by year twelve. The plan line starts at zero and reaches $28,150 by year twelve. Oil is an estimate; the plan is exact. The full figures are in the table below the chart. $0$20k$40k$60kStart24681012 $54,250 oil $28,150 plan
Running total of what each option costs over twelve years Two lines. The oil line starts at $5,000 for the furnace and reaches about $54,250 by year twelve. The plan line starts at zero and reaches $28,150 by year twelve. Oil is an estimate; the plan is exact. The full figures are in the table below the chart. $0$20k$40k$60kStartYear 2Year 4Year 6Year 8Year 10Year 12 $54,250 oil $28,150 plan
Show the figures behind the chart
YearOil per seasonPlan per yearPlan per monthOil side, running totalPlan, running total
1$3,672$2,100$175.00$8,672$2,100
2$3,745$2,142$178.48$12,417$4,242
3$3,820$2,184$182.03$16,238$6,426
4$3,897$2,228$185.66$20,135$8,654
5$3,975$2,272$189.35$24,109$10,926
6$4,054$2,317$193.12$28,163$13,244
7$4,135$2,364$196.96$32,299$15,607
8$4,218$2,411$200.88$36,517$18,018
9$4,302$2,459$204.88$40,819$20,476
10$4,388$2,507$208.96$45,207$22,984
11$4,476$2,557$213.11$49,684$25,541
12$4,566$2,608$217.36$54,249$28,150

Dollars, rounded. Oil figures are estimates. The plan figures are exact. On a phone, slide the table sideways to see every column.

What the plan includes

  • Heating and coolingReplaces the window AC.
  • Three indoor units on one outdoor unitOne system for the whole house.
  • A 12-year warrantyFor the length of the plan.
  • The rebate, already appliedIt is built into the monthly payment.
  • No oil deliveries, no furnace to buyNo $5,000 to $7,000 bill up front, and no exposure to oil price swings.

One note on oil: the estimate assumes oil prices move the same 2% a year as the plan. A year ago the Massachusetts average was about $3.55 a gallon. This week it is $6.12. It can move a lot either way.

How we got these numbers

Staying on oil

Replacement furnace: $5,000, a good-deal price. Quotes are often around $7,000; your own quote was $7,000. With a $7,000 furnace the twelve-year total is about $56,250.

Oil is bought in the heating season, about October to March. We estimate about 600 gallons a season for a home around 1,000 square feet. Your actual gallons will change this.

Price: $6.12 a gallon, the Massachusetts statewide average for the week of October 19, 2026, from the weekly survey by the U.S. Energy Information Administration and the Massachusetts Department of Energy Resources.

We assume oil rises 2% a year, the same rate as the plan, so the comparison is like for like. Year one is 600 x $6.12 = $3,672; year twelve is $4,566. Twelve seasons: $49,249. If oil stayed flat at $6.12 the whole time, oil alone would be $44,064, or $49,064 with the furnace.

The plan

$175.00 a month in year one, rising 1.99% each year, to $217.36 a month in year twelve. That is $2,100 in year one and $2,608 in year twelve. Twelve years: $28,149.55, shown as $28,150. This is exact math, not an estimate.

The rebate is already applied to the monthly payment.

Your call

There is no deadline on this page. Whatever you decide, we're glad to answer questions, and we'll always show our math.