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Typical your area range for this kind of work, from regional averages — not a quote from C2G Environmental Consultants, LLC. 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
C2G Environmental Consultants is the company people call when a home heating oil tank starts leaking or simply gets too old. On Google it holds 4.9 stars from 222 ratings. A recent customer said Romano and Dan had the old tank out of a walk-down basement and the new tank in fast. A recent customer said the oil tank replacement in their basement took under 4 hours and the office handled the permit. A recent customer said they had two buried oil tanks removed and the pricing was fair. A recent customer whose tank was leaking said the online quote came in lower than other quotes, and that the company cleaned up the oil that had leaked. A 2026 customer with a Friday-night leak said C2G was the only company of four where a person answered the phone, and the team was onsite by 10:00 the next morning. A 2023 customer said Jose and Ross replaced the tank, piping and accessories in a basement with low headroom. A recent customer gave one star, saying they paid $2950 upfront for a temporary tank they could not use for 3 days. A recent customer said a site-review appointment never reached the person coming to the house, twice, though the workmanship was fine.
“I got 3 estimates and used these guys, I'm on Long Island, they did a great job and have offices in NY/NJ/CT.”
“C2G Environmental Consultants out of Waterbury.”
We recently used C2G to replace our oil tank. We were initially hesitant to use them as they are not located near us, however, the process was easy, follow up was great and all staff that came to our house were top notch. Prices were competitive and never felt We were being taken advantage of. Nice job C2G!!
C2G Did an amazing job on the removal and installation of a new oil tank in my walk down basement. Romano and Dan had the old tank out, and the new tank in, amazingly fast. They were a pleasure to work with, and I have no problem recommending them.
Terrible experience with C2G. They required $2950 upfront to have a temp tank delivered, connected, and started so we could get hot water, yet we couldn’t use the tank for 3 days. They called this an “emergency service” that they arranged with our oil company. The kicker is they didn’t even tell us or our oil company what they didn’t do. Lesson here: Shop around. We shouldn’t have jumped on our oil company’s recommendation, but that’s what you do when you encounter an oil disaster. We ended up using another environmental company to get hot water, remediate our property, and purchase & install a Roth tank - a company that was very honest and thorough in explaining the process. Three remediation companies told us C2G overcharged us over double for an “emergency service” we never received.
C2G made the entire process pretty painless and easy, they were in and out in a matter of a few hours in the morning (arriving promptly I might add) for a tank replacement. I was expecting the process to entail a lot more headache but it was a pleasant surprise.
Did a super quick and easy job of an old oil tank replacement in our basement not even 4 hours start to finish, everyone at the office was awesome and walked me through the process and handled the permit as well. Easy work!
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1 change recorded — last scanned Oct 13, 2026.
Next-day oil tank replacement4.3
19 years in businessNot yet rated