How to Clean and Maintain Your Hobart Commercial Refrigerator

What a Hobart refrigerator needs to stay fresh and reliable

Hobart commercial refrigerators are built for kitchens that move fast—restaurants, delis, catering operations, and institutional food services. Because they run constantly and hold more food than a home unit, they need a different cleaning rhythm and approach than what works for a kitchen fridge. The door seals trap more debris, the shelves hold heavier loads, and the compressor works harder, so neglecting maintenance costs you in spoilage, energy bills, and repair calls.

The good news: Hobart units are designed to be serviced. You can handle the routine cleaning yourself—the parts that matter most—and know when to call a technician. This guide covers what to clean, how often, and why each step protects your food and your equipment.

Key Takeaways

• Clean the door seals and gaskets weekly with warm soapy water and a soft cloth, because food particles and mold hide in the grooves and break the cold seal.
• Wipe down shelves and interior surfaces twice weekly with a food-safe sanitizer, paying attention to spills that can harbor bacteria and odors.
• Check and clean the condenser coils monthly (or more often in dusty kitchens), because blocked coils force the compressor to work harder and shorten its life.
• Empty and sanitize the drain pan every two weeks, because standing water breeds mold and creates the sour smell that spreads to stored food.
• Keep the temperature log and call a technician if the unit drifts more than 2°F from your set point, because a failing compressor or thermostat costs far more to replace than to repair early.

Weekly cleaning: seals, shelves, and spills

The door gasket—the rubber seal that runs around the inside edge of the door—is where most problems start. Food particles, condensation, and mold collect in the grooves, and once the seal is compromised, cold air leaks out and warm air leaks in. Your compressor has to run longer, your energy bill climbs, and your food sits at unsafe temperatures.

Pull the door open and run your finger along the gasket. If you feel sticky residue or see dark spots, it is time to clean. Use a soft cloth or soft-bristled brush (not steel wool, which damages the rubber) and warm water with a small amount of dish soap. Work the cloth into the grooves where the seal folds. Rinse with a clean damp cloth and dry with a lint-free towel. Do this once a week, or more often if your kitchen is busy or humid.

While the door is open, wipe down all interior surfaces and shelves with a cloth dampened in a food-safe sanitizer solution (follow your sanitizer's dilution instructions). Pay special attention to corners, the underside of shelves, and anywhere you see condensation pooling. Spills that sit for days become sticky and attract mold. Wipe them up the day they happen if you can, and do a full wipe-down at least twice a week.

Bi-weekly drain pan maintenance

Every Hobart refrigerator has a drain pan underneath or at the back that collects condensation from the cooling coils. This water should drain out, but if the pan is clogged or the drain line is blocked, water sits and stagnates. Stagnant water smells sour, grows mold and bacteria, and that smell transfers to everything in the fridge.

Locate your drain pan—check your unit's manual if you are unsure—and pull it out every two weeks. Empty any standing water into a sink. Rinse the pan with hot water and a small amount of dish soap, scrub gently with a soft brush to remove any slime or buildup, and rinse again. While the pan is out, look at the drain opening on the unit itself and make sure it is not blocked by food debris or ice. If you see a blockage, use a soft pipe cleaner or a small flexible brush to clear it gently. Dry the pan and slide it back in place.

Monthly condenser coil inspection and cleaning

The condenser coils are the metal fins on the back or bottom of the unit where heat is released. They pull air through them to cool the refrigerant, and if dust, grease, or lint builds up on the fins, airflow is blocked. The compressor has to work harder to cool the box, your energy use climbs, and the compressor can overheat and fail.

Once a month, unplug the unit or switch it off at the breaker. Locate the condenser coils—usually at the back or underneath. Use a soft brush or a coil cleaning brush (available at appliance supply stores) to gently brush away dust and debris. Work from top to bottom so particles fall away. Do not use a pressure washer or blast compressed air directly at the coils, because you can bend the delicate fins and make the problem worse.

If the coils are very dirty or greasy (common in kitchens with a lot of frying), you may need a commercial coil cleaner. Follow the product instructions carefully, and make sure the unit is unplugged before you spray anything. After cleaning, let the coils dry completely before plugging the unit back in. In a dusty or high-traffic kitchen, check the coils every two weeks instead of monthly.

Temperature monitoring and troubleshooting

A Hobart refrigerator should hold a steady temperature—usually 35°F to 38°F for a reach-in or undercounter unit. Small fluctuations are normal, but if the temperature drifts more than 2°F from your set point, or if you notice frost building up inside or the compressor running constantly, something is wrong.

Keep a simple temperature log: check the thermometer or digital display once a day and write down the reading. If you see a trend—temperature creeping up over a few days—that is your signal to call a technician before food spoils. A failing thermostat, a leaking refrigerant line, or a clogged capillary tube can all cause temperature drift, and catching these early saves money.

If the unit is running but not cooling, check the basics first: Is the condenser coil blocked with dust? Is the drain pan overflowing and blocking airflow? Is the door seal intact? If those are clear and the temperature is still rising, do not wait—call a service technician. Hobart units are repairable, but a compressor that runs too long without cooling will fail, and replacement is expensive.

Organizing shelves to keep food fresh longer

How you arrange food affects both safety and shelf life. Store raw proteins on the lowest shelf so drips cannot contaminate ready-to-eat food above. Keep dairy and prepared foods on middle shelves where the temperature is most stable. Store vegetables and fruits in any designated produce drawer or on upper shelves, where they are less likely to freeze if the unit is running cold.

Leave space between items so cold air can circulate. A packed refrigerator is an inefficient refrigerator—the compressor has to work harder to cool everything, and food in the middle of a dense stack may not reach safe temperature. Wipe down containers before you put them in, so you are not storing spills and drips along with the food.

Handling odors and mold

If your Hobart smells sour or musty even after cleaning, the problem is usually the drain pan, the door gasket, or a spill hiding in a corner. Start by emptying and sanitizing the drain pan as described above. Then do a thorough wipe-down of all interior surfaces with a cloth dampened in white vinegar or a food-safe sanitizer. Pay special attention to the gasket grooves, the underside of shelves, and the back wall where condensation collects.

If the smell persists, place an open box of baking soda on a shelf and leave it for a few days. Baking soda absorbs odors without adding flavor to food. Replace it every week until the smell is gone. If you see visible mold on the interior surfaces or gasket, do not just wipe it away—spray the area with a food-safe mold cleaner, let it sit for the time recommended on the label, then wipe and rinse thoroughly. Mold in the gasket grooves often means the seal is not closing properly, which is a sign to call a technician.

When to call a technician

You can handle cleaning and basic maintenance, but some problems need a professional. Call a Hobart service technician if the temperature will not hold steady, if the compressor is running constantly but the box is not cold, if you hear unusual noises (grinding, squealing, or rattling), if the door will not close properly, or if you see frost or ice buildup inside the unit.

Keep your unit's serial number and model number handy—they are usually on a plate on the back or inside the door—so you can give them to the technician when you call. Hobart has a network of authorized service providers, and many can schedule same-day or next-day visits for commercial units. Regular cleaning and maintenance reduce the chance you will need a call, but when you do, catching the problem early saves money and keeps your food safe.

Frequently Asked Questions

How often should I replace the door gasket?

A well-maintained gasket lasts three to five years. If you clean it weekly and dry it after each cleaning, it stays flexible and seals properly. If it cracks, tears, or no longer springs back when you press it, it is time to replace it. A new gasket costs far less than the energy waste and spoilage from a leaking seal.

Can I use bleach to clean the interior?

No. Bleach is too harsh for food contact surfaces and can damage the interior finish. Use a food-safe sanitizer diluted according to the label, or a solution of one part white vinegar to three parts water. Both kill bacteria and mold without leaving harmful residue on food or surfaces.

What should I do if water is pooling inside the refrigerator?

First, check the drain pan underneath or at the back—it may be full or blocked. Empty it and clear the drain opening. If water continues to pool inside the box after you clean the drain, the drain line itself may be clogged. Use a soft pipe cleaner to clear it, or call a technician if you cannot reach the blockage safely.

Is it normal for the compressor to run all the time?

No. The compressor should cycle on and off throughout the day. If it runs constantly, the unit is not reaching temperature, which means the thermostat, refrigerant, or compressor itself may be failing. Check that the condenser coils are clean and the door seal is intact, then call a technician if the problem continues.

How do I know if my refrigerator is using too much energy?

A dirty condenser coil and a leaking door seal are the most common causes of high energy use. If you have cleaned the coils and the gasket is intact but your energy bill has climbed, the compressor may be working harder than it should. A technician can check the refrigerant level and the thermostat to find the cause.