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Oil Companies
Darien Homeowner’s Guide to Selecting an Oil Company
For Darien families heating with fuel oil, selecting which of the 35 heating oil companies that serve Darien makes a big difference.
Full Service Oil Companies: Homeowners who prefer a “set-it-and-forget-it” heating system select one of the 21 “full-service” oil companies that serve Darien. Full service companies such as Montanari Fuel Service Inc or Rural Energy LLC offer households annual contracts which consist of a combined package of both automatic fuel oil delivery and furnace repair. With an automatic number two heating oil delivery contract, the company tracks your home’s oil consumption and makes deliveries when your tank is running low. The homeowner does not need to monitor the level of the oil tank or place individual orders.
Discount Oil Companies: Also known by the names “COD Fuel” or “Cash Heating Oil” companies, discount oil companies are for clients who are budget-conscious. With discount oil companies, in return for better prices, you monitor the number two heating oil level in your tank, and you place an oil order either when the level runs low or just before a major snowstorm. A few of the 2 Darien cash heating oil companies serving Darien include Affordable Heating & Fuel LLC Inc and HiHo ClicknGo.
Darien Heating Oil Company Fast Facts: Fuel oil Companies Serving Darien: 35 companies .
Average Number of Darien Homes Served per Number Two Heating Oil company : 128
Darien, CT Heating Oil Trends
Last year, Darien homeowners purchased a total of 3 million gallons of heating oil. Out of the 269 towns in Connecticut, Darien ranks 30th for home heating oil consumption.
Country-wide, Darien ranks 121st out of 29,620 towns in America for heating oil consumption.
Short Term Trends
Darien’s overall oil use fluctuates from year to year as winter conditions change. As the temperature outside gets more chilly, homes’ boilers need to burn additional oil to keep the house warm inside. Last winter, the average outside temperature in Darien was 33.0°F, which was 4.2°F colder than the prior winter's average outside temperature.
Darien Average Winter Temperature
| Heating Season | Average Temperature |
|---|---|
| 2024 - 2025 | 33° F |
| 2023 - 2024 | 37.2° F |
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Oil Prices
Average Darien Heating Oil Price Trends
Updated on March 30, 2026
| Time Horizon | Price Change |
|---|---|
| 1 Week Trend | -$0.053 |
| 1 Month Trend | +$1.258 |
| 3 Month Trend | +$2.041 |
| 1 Year Trend | +$2.157 |
Average Darien Heating Oil Price History
Updated on March 30, 2026
| Date | Price |
|---|---|
| 03/30/2026 | $5.546 |
| 03/23/2026 | $5.599 |
| 03/16/2026 | $5.166 |
| 03/09/2026 | $5.106 |
| 03/02/2026 | $4.288 |
| 02/23/2026 | $4.077 |
| 02/16/2026 | $4.055 |
| 02/09/2026 | $4.083 |
| 02/02/2026 | $4.087 |
| 01/26/2026 | $3.871 |
| 01/19/2026 | $3.543 |
| 01/12/2026 | $3.484 |
| 01/05/2026 | $3.505 |
| 12/29/2025 | $3.496 |
| 12/22/2025 | $3.480 |
| 12/15/2025 | $3.562 |
| 12/08/2025 | $3.616 |
| 12/01/2025 | $3.630 |
| 11/24/2025 | $3.729 |
| 11/17/2025 | $3.710 |
| 11/10/2025 | $3.690 |
| 11/03/2025 | $3.560 |
| 10/27/2025 | $3.526 |
| 10/20/2025 | $3.389 |
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Heating Oil
Save on Heating Oil: Compare Prices from 35 Darien Suppliers
Propane vs. Natural Gas vs. Heating Oil: Darien Home Heating Fuel Comparison
Families have a host of fuels that can be used when it comes to heating. Heating Oil is the preferred choice in Darien, used by 4,473 or 64% of families. The 2nd most popular primary heating fuel for Darien households is Propane, used by 917 homes (13%). The remaining homes are heated with Natural Gas (11%), Electricity (10%), Other (1%), and Solar (0.1%).
Darien Residential Primary Home Heating Fuel (No. of Households)
| Year | Natural Gas | Propane | Electricity | Oil | Wood | Solar | Other |
|---|---|---|---|---|---|---|---|
| 2025 | 768 | 917 | 704 | 4,473 | 7 | 8 | 58 |
| 2024 | 726 | 916 | 670 | 4,627 | 4 | 4 | 54 |
| 2023 | 694 | 908 | 646 | 4,794 | 0 | 0 | 51 |
| 2022 | 824 | 762 | 582 | 4,789 | 0 | 0 | 143 |
| 2021 | 789 | 714 | 563 | 4,735 | 0 | 0 | 142 |
| 2020 | 720 | 666 | 550 | 4,813 | 0 | 0 | 154 |
| 2019 | 675 | 601 | 562 | 4,884 | 0 | 0 | 133 |
| 2018 | 593 | 646 | 525 | 4,952 | 0 | 0 | 125 |
| 2017 | 597 | 516 | 478 | 4,981 | 34 | 0 | 52 |
| 2016 | 582 | 420 | 377 | 5,129 | 30 | 0 | 43 |
| 2015 | 538 | 354 | 364 | 5,228 | 32 | 0 | 14 |
| 2014 | 500 | 267 | 338 | 5,377 | 34 | 0 | 8 |
| 2013 | 496 | 137 | 301 | 5,473 | 47 | 0 | 9 |
| 2012 | 417 | 133 | 300 | 5,749 | 9 | 0 | 19 |
| 2011 | 371 | 180 | 339 | 5,637 | 9 | 0 | 21 |
Heating Oil (Fuel Oil) Use in Darien
Fuel oil has become losing popularity in Darien. In the 2 years since 2023, the number of homeowners using number two heating oil declined from 4,794 to 4,473, a 7% drop.
Propane vs. Natural Gas use for home heating in Darien
Between 2023 and today, the number of households using propane as the primary space heating fuel shot up from 908 to 917, a 1% change. Comparing 2023 and today, the number of homes using natural gas as the primary space heating fuel grew from 694 to 768, a 11% change.
Electricity use for home heating in Darien
Electric heat pump systems for home heating are more popular in Darien. Since 2023, the number of homes heating with electricity jumped from 646 to 704, a 9% change.
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Oil Delivery
Darien, CT Heating Oil Delivery Map
Darien Heating Oil Delivery Overview
4,473 houses in Darien heat their homes with heating oil. This makes oil delivery essential, especially when Darien temperatures drop as low as 28.4° F each winter. 64.2% of Darien houses rely on fuel oil delivery each winter.
64.2% of Darien, CT Households Rely On Heating Oil Delivery Each Winter
| Darien, CT Households | Darien, CT Heating Oil Households |
|---|---|
| 6,965 | 4,473 |
35 Darien Oil Companies You Can Bank On
With 3,428,726 gallons of heating oil delivered to Darien households last winter, the Darien community depends on its 35 oil companies to keep their oil tanks full. Oil delivery can be summed up in two steps: First, an oil truck picks up oil at the nearest bulk fuel terminal (also known as a “rack”). In the case of Darien, two of the closest terminals are Buckeye in Wethersfield, CT and Sprague W in Springfield, MA. Then, the truck delivers the number two heating oil to residences and companies throughout Darien and the surrounding region.
Darien Heating Oil Prices FAQs
Is the price of heating oil in Darien, CT rising or falling?
The price of heating oil in Darien, CT has fallen by $0.140 over the last 7 days.
Is heating oil going up or down in Darien, CT?
Heating oil prices in Darien, CT have fallen by $0.140 over the past 7 days.
