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Checked Oct 29, 10:58 AM
Past 7 days · Price per gallon
Mario's Oil is an Everett heating oil delivery and heating-system service company, and in a 2025 review a customer who ran out of oil in single-digit cold said they called 13 local companies before finding Mario's Oil, which had a guy at the door for delivery in 1.5 hours. The company describes itself as family-owned, serving Greater Boston and bilingual in English and Spanish, and says it was established in 2006. Its stated service area includes Chelsea, Everett, Malden, Medford and Revere. On Google it holds 4.2 stars from 30 ratings, and the BBB gives it an A+ without accreditation. A 2026 customer in Chelsea who said they had worked with about 10 different oil and heating businesses since 2020 said each employee they spoke with at Mario's Oil was empathetic, keen and punctual. A 2025 customer said oil was delivered the next morning. In a 2022 review written in Spanish, a customer said the company offered a lower oil price than the other places they called, and that the technician kindly answered all their questions about a problem with their oil machine. A 2021 customer said they had the oil burner tuned up and it burned oil more efficiently afterward. A 2021 customer said they got the burner cleaned and received oil the same day. In a 2022 r/somerville thread, a commenter said the company arrives almost instantly and charges the same as other companies, and called it reliable and extremely helpful. A 2026 customer whose family used the company for years said they later realized it was not putting in the full amount of oil, and that it once came a week earlier than expected to fill up while they were on vacation. A 2024 customer said their grandmother noticed the company was putting in 75 gallons rather than 100. A 2026 customer receiving oil through a program said they were made to wait up to three days for deliveries, that the secretary told them the driver can do what he wants and treated them like trash, and that when they paid cash the company came within two hours. A 2024 customer with a slow leak in an oil tank said the man who came was extremely aggressive, threatened to call the fire department, quoted $3,500, and then said he would charge $150 to inspect the tank before delivering oil, after the customer had replaced it for under $1,000. A 2024 customer said the company refused to service their heating system because they had not had oil delivered from it since 2023, though that customer found the reception lady very helpful.
“Mario’s oil in Medford arrives almost instantly. They charge the same as other companies but have been reliable and extremely helpful.”
Very good company
My family used this oil company for years, but we noticed later realized they weren’t putting in the full amount. Who knows how long this had been going on. They even came a week earlier than expected to fill up while I was on vacation for 10 days. Very dishonest business.
Extremely reliable and great service!
Im very upset and hurt I feel Because I was being helped by program to receive heat oil Im made to wait up to three days and when they do finally decide to come it's always very late and I'm last on the list the secretary told me that the driver can do what he wants and show up on his own time she treated me like trash but when I paid cash out my Pocket over a month ago they came with in two hours same day I think that is so evil I have kids here and health condition and Im going thru a lot and it's about 7 degrees out and it's been 3 days we have froze in this house with only one electric heater because I'm on fixed income and paid other bills I couldn't afford to buy another heater or pay them cash for oil heat right now streets are clear and it's not snowing theres no excuse it makes me sick to my stomach to treat a human being that way the driver told me an hour and he was only 15 minutes away from my home and changed his route to go delivery to others people who in another city that's 25 30 minutes away and the secretary is rude I'm changing vender after tonight I'm so traumatized and cold 😢
I have worked with one or two different oil technicians and home heating suppliers every year over the past 5 years (i.e. about 10 different businesses) since I moved to Chelsea MA at the end of 2020. Mario’s Oil is by far the most friendly, honest and competent business I have had the pleasure of working with. Each employee I have spoken with is empathetic, keen, and punctual. I hope we get to work with them for as long as we live in Chelsea.
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Service area
1 change recorded — last scanned Sep 9, 2026.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from MARIO'S OIL. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$5,000 – $11,400
Typical HVAC project around $8,200
Most homes have a 275-gallon tank, and a delivery usually fills whatever is left in it — so pick how many gallons you need. The total is before any fees or taxes.
Estimated total
$1,512.23
275 gal at $5.499, before fees
Languages
Languages
Ownership
Certified attributes are verified against the public registry. Others are the business's own statement.
Ownership
Certified attributes are verified against the public registry. Others are the business's own statement.
Phone scan and a 3-D rendering4.4
Kitchen and bath remodels4.2
14 permitted HVAC projects on record3.6