The most common home oil tanks are 275 or 330 gallons in size. However, they cannot be filled to the very top—due to oil expansion and mandatory air space, a standard 275-gallon tank holds about 250 usable gallons, and a 330-gallon tank about 300 gallons.

Many fuel companies focus only on deliveries and then refer you to third‑party contractors for heating, cooling, or plumbing work, which can add extra steps and cost. Tasse Crowley handles fuel, HVAC, and plumbing in‑house, so everything from a delivery to a furnace repair or burst pipe is coordinated by one team.

Lift off the plastic cover and gently press the mechanism up and let it fall—if it splashes or floats back up when released, it’s likely working. A stuck float or a reading that doesn’t change after delivery may indicate a broken gauge. If you suspect a problem, call us for service.

Yes. Carefully insert a clean, varnished stick slowly into the tank to the bottom, then withdraw and measure where the “wet mark” ends. Use a tank chart (available from our office) to convert height in inches to gallons remaining. Never drop the stick in—it can damage an old tank.

Oil expands and contracts with temperature changes. State code requires an “air cushion” at the top of every tank to allow for safe expansion and to prevent spills. Delivery drivers stop filling when the vent alarm (whistle) sounds, about 6 inches from the top.

The whistle is a safety feature. As oil enters, air is pushed out and makes a whistling noise through the vent pipe. When the tank is nearly full, the whistle stops, alerting the driver to stop filling—this prevents spills and overfilling.

Monitor your gauge regularly, especially in cold weather. For peace of mind, sign up for automatic delivery—Tasses Crowley Energy tracks your usage and delivers before your tank runs low. If you’re a will-call customer, order when at or just above ¼.

Look for wet spots, rust, or a persistent oil smell—these could indicate a leak. Old tanks should be professionally inspected. Modern double-wall tanks (like Roth) offer extra protection and longer lifespan. Insurance and local codes usually prohibit used tanks for safety.

Oil tanks must be installed level on a firm, fireproof base—either inside your home (most common in New England), in a basement, or outside on a solid, protected pad. Outdoor tanks may need additional protection from weather and should be checked regularly for moisture and corrosion.

Yes, smart oil tank gauges use Wi-Fi and ultrasonic sensors to track your oil level and send updates to your phone or email so you never have to guess when to reorder.

 If you are moving out of your home, the most frequently asked question is about the unused oil in your tank. Typically, you get paid for the remaining oil by the incoming homeowner, who pays you at the current market rate for the fuel left in the tank. This helps ensure a smooth transition and fair settlement at closing.

The most common home oil tanks are 275 or 330 gallons in size. However, they cannot be filled to the very top—due to oil expansion and mandatory air space, a standard 275-gallon tank holds about 250 usable gallons, and a 330-gallon tank about 300 gallons.

Many fuel companies focus only on deliveries and then refer you to third‑party contractors for heating, cooling, or plumbing work, which can add extra steps and cost. Tasse Crowley handles fuel, HVAC, and plumbing in‑house, so everything from a delivery to a furnace repair or burst pipe is coordinated by one team.

Lift off the plastic cover and gently press the mechanism up and let it fall—if it splashes or floats back up when released, it’s likely working. A stuck float or a reading that doesn’t change after delivery may indicate a broken gauge. If you suspect a problem, call us for service.

Yes. Carefully insert a clean, varnished stick slowly into the tank to the bottom, then withdraw and measure where the “wet mark” ends. Use a tank chart (available from our office) to convert height in inches to gallons remaining. Never drop the stick in—it can damage an old tank.

Oil expands and contracts with temperature changes. State code requires an “air cushion” at the top of every tank to allow for safe expansion and to prevent spills. Delivery drivers stop filling when the vent alarm (whistle) sounds, about 6 inches from the top.

The whistle is a safety feature. As oil enters, air is pushed out and makes a whistling noise through the vent pipe. When the tank is nearly full, the whistle stops, alerting the driver to stop filling—this prevents spills and overfilling.

Monitor your gauge regularly, especially in cold weather. For peace of mind, sign up for automatic delivery—Tasses Crowley Energy tracks your usage and delivers before your tank runs low. If you’re a will-call customer, order when at or just above ¼.

Look for wet spots, rust, or a persistent oil smell—these could indicate a leak. Old tanks should be professionally inspected. Modern double-wall tanks (like Roth) offer extra protection and longer lifespan. Insurance and local codes usually prohibit used tanks for safety.

Oil tanks must be installed level on a firm, fireproof base—either inside your home (most common in New England), in a basement, or outside on a solid, protected pad. Outdoor tanks may need additional protection from weather and should be checked regularly for moisture and corrosion.

Yes, smart oil tank gauges use Wi-Fi and ultrasonic sensors to track your oil level and send updates to your phone or email so you never have to guess when to reorder.

 If you are moving out of your home, the most frequently asked question is about the unused oil in your tank. Typically, you get paid for the remaining oil by the incoming homeowner, who pays you at the current market rate for the fuel left in the tank. This helps ensure a smooth transition and fair settlement at closing.