MARIO'S OIL

Mario's Oil delivers heating oil and services oil-fired furnaces out of Everett, Massachusetts, covering towns from Chelsea and Revere up through the North Shore into Salem and Peabody. The company says it was founded in 2006, remains family-owned, and answers calls in both English and Spanish — a detail several Spanish-speaking reviewers point out on their own. Across 22 Google reviews dating back to 2021, most are glowing on one point: speed. "Delivered next morning," "delivery right away," and "received oil same day" are recurring lines, and in a January 2026 review, a customer who said she'd cycled through roughly ten different oil suppliers over five years called Mario's Oil the most honest and reliable of the bunch. A couple of older reviews, from 2021, also credit a burner tune-up with making their furnace run more efficiently. Its BBB profile carries an A+ letter grade, though the company is not BBB-accredited. The praise isn't the whole story. In a review from this past February, and again in one from 2024, two long-time customers separately accused the company of under-filling their oil deliveries — one saying a supposed 100-gallon order only ever amounted to about 75 gallons. A separate 2024 review describes a technician quoting $3,500 to fix a leaking oil tank that the customer says he then repaired himself for under $1,000, and another customer using a heating-assistance program said she was routinely placed last on the delivery route. One more, from 2024, says the company refused a service call because no oil had been ordered from them since the previous December. For a routine delivery or a seasonal tune-up, the volume of fast, friendly-service reviews speaks for itself. Given the repeated under-filling complaints, though, it's worth asking the driver to confirm the gallons pumped, or checking the tank gauge yourself, especially on a first order.