Installing an Under Cabinet Heater Step-by-Step

Under the cabinet heaters provide targeted warmth right where you need it most - under cabinets or toe kicks. These compact electric heaters are ideal for heating small spaces like under bathroom vanities, kitchen cabinets, and workstations. Installing an under cabinet heater is a relatively straightforward DIY project. Here is a step-by-step guide to properly installing these useful heaters in your home.

What is an Under Cabinet Heater?

An under cabinet heater is a type of electric fan-forced heater that mounts underneath cabinets to provide radiant and convection heat. It is designed to be installed horizontally under standard kitchen or bathroom cabinets with dimensions of 12-24 inches depth and 18-36 inches width.

Under cabinet heaters come in 120V and 240V models with power ratings from 250W to 1500W. They feature an adjustable thermostat to control the temperature. The grilles can tilt up to 30 degrees to direct the warm airflow where needed. Under cabinet heaters are ideal for warming your feet and legs during cold winter months without running the central heating system.

Benefits of Under Cabinet Heaters

Here are some key benefits of using under cabinet heaters in your home:

• Provide instant and localized heat right where you need it.
• Energy efficient - only heat a small zone instead of the whole room.
• Thermostat controlled for customized warmth and comfort.
• Compact size installs easily under most cabinets.
• Safe for indoor use with automatic overheat protection.
• Can lower thermostat temperature and save on heating costs.
• Portable and easy to move between rooms as needed.

Typical Uses for Under Cabinet Heaters

Under cabinet heaters can be installed in multiple rooms including:

• Bathrooms - Mount under sink vanity to keep your feet warm on cold mornings.
• Kitchens - Install under cabinets or island to provide warmth while cooking and washing dishes.
• Offices and workstations - Keep your toes toasty warm without running the central heat.
• Garages or basements - Provide targeted heat in cold unfinished spaces.

Types of Under Cabinet Heaters

There are two main types of under cabinet heaters:

Electric Under Cabinet Heaters

Electric under cabinet heaters use electric heating elements to produce radiant and fan-forced heat. Popular types include:

• Ceramic - Embedded in insulating mica for even heat distribution.
• Tubular - Coiled metal sheathed elements with reflectors.
• Quartz or halogen bulbs - Provide instant infrared radiant heat.

Hydronic Under Cabinet Heaters

Hydronic under cabinet heaters use hot water from a boiler to heat the space. They connect to home hydronic or boiler system via supply and return lines. Hydronic models provide very even heat but require professional installation.

Key Features to Consider

Here are some important features to consider when selecting an under cabinet heater:

Heating Element Types

Ceramic and tubular electric elements provide safe, consistent heat. Bulb and tube heaters offer instant infrared warmth.

Size and Dimensions

Standard width is 10-12 inches. Depth is adjustable from 12-24 inches. Match size to your cabinet dimensions.

Mounting Options

Look for models with adjustable or tilt-able grilles to direct heat. Wall mounting kits are also available.

Safety Features

Units should have automatic overheat protection, cool-touch housing, and UL safety listing.

Thermostat and Temperature Control

Adjustable or programmable thermostats allow custom comfort control.

Efficiency Rating

Higher wattage models produce more heat. Select appropriate wattage for the space size.

Calculate Your Heating Requirements

Choosing the right size under cabinet heater for your space involves some simple calculations:

1. Measure the square footage of the area you want to heat under the cabinet.
2. Factor in heat loss from drafty floors or windows.
3. Recommended wattage is around 100W per square foot.
4. Size up for poorly insulated spaces or very cold climates.

Most under cabinet heaters range from 250W for small spaces to 1500W for larger areas. Have your cabinet dimensions and power supply ready when selecting a model.

Selecting the Right Under Cabinet Heater

With your heating requirements calculated, start researching models. Consider the following when selecting an under cabinet heater:

Match Heating Power to Requirements

Choose sufficient wattage for your space size without oversizing. Reference the product wattage guide.

Consider Size Constraints

Measure cabinet depth and width to ensure an under cabinet heater will fit properly.

Noise Level and Fan Speeds

Fan-forced models produce some noise. Check decibel ratings and opt for variable fan speeds.

Available Mounting Options

Look for adjustable grilles, tilt settings, and wall mounting availability to direct heat.

Also consider available voltage, safety features, thermostat options, and brand reputation when selecting a model.

Installation Preparation

Before installing your under cabinet heater, complete these preparatory steps:

Ensure you have the right tools:

• Measuring tape
• Pencil
• Stud finder
• Level
• Screwdriver
• Drill

Confirm electrical requirements

Ensure your electrical supply matches the voltage and amperage rating of the heater.

Choose mounting bracket location

Determine the best position under your cabinet to mount the heater bracket.

Take safety precautions

Turn off power supply at circuit breaker. Use caution when working with electrical connections.

Step-by-Step Installation Process

Follow these key steps to safely and properly install your under cabinet heater:

1. Mount Bracket Securely

• Position and level bracket under cabinet.
• Mark holes for drilling.
• Drill holes into cabinet bottom or wall studs.
• Attach bracket securely with mounting screws.

2. Attach Heater to Bracket

• Align cabinet heater with mounting bracket.
• Insert screws through slotted holes to secure in place.
• Adjust position or angle as needed.

3. Connect Power Supply

• Feed electrical cable from power source to heater.
• Connect wires to terminal block securely.
• Attach cover plate.

4. Test Operation

• Restore power at circuit breaker.
• Power on heater and test at various settings.
• Ensure it heats up and thermostat works properly.

5. Adjust Angle and Direction

• Pivot or tilt heater grille to direct warmth where needed.
• Use optional wall mounting kit for more flexibility.

Your under cabinet heater is now ready to enjoy! Adjust the thermostat to your desired cozy temperature.

Operation and Maintenance

To keep your under cabinet heater running safely and efficiently follow these tips:

Use Thermostat and Controls Properly

Set to lower temperatures for energy savings. Turn off when not needed. Follow manufacturer instructions.

Clean Dust and Debris Regularly

Use compressed air or a vacuum to keep vents and internal parts clean.

Inspect Electrical Connections

Check for damage, wear, or overheating. Tighten terminals as needed.

Replace Air Filter as Needed

Clean or change filter every few months to improve airflow.

Troubleshooting Common Problems

Under cabinet heaters are fairly reliable but occasional issues can arise. Here are some common problems and solutions:

Unit Not Turning On

• Check circuit breaker or resets
• Inspect wire connections
• Test outlet for power

Blowing Cold Air

• Faulty heating element
• Thermostat set too low
• Defective temperature limiter

Noise or Vibration

• Fan rattling - adjust or replace
• Loosen mounting screws
• Check for obstruction of fan

Circuit Breaker Tripping

• Confirm proper circuit rating
• Too many devices on circuit
• Faulty wiring connection

Burning Smell

• Turn off immediately
• Clean dust and debris
• Have electrician inspect

For persistent issues, contact the manufacturer for troubleshooting advice or request a replacement.

Safety Tips

While very safe when used properly, always keep these safety tips in mind:

• Never cover the heater vents or grilles.
• Keep electrical components away from water.
• Turn off the heater when not in use.
• Inspect for damage before use. Replace if damaged.
• Check for overheating. Allow proper airflow.
• Do not attempt to service the internal electric parts yourself.

Saving Money and Improving Efficiency

Under cabinet heaters provide an affordable way to add warmth just where needed. You can maximize energy savings with these tips:

• Zone heating only runs when needed, saving on energy bills.
• Use a thermostat or timer to automatically turn off.
• Keep air filters clean for optimum airflow and heat transfer.
• Lower your thermostat temperature and rely on cabinet heaters.
• Choose the minimum wattage heater for your space needs.
• Install insulation under cabinets to hold in warm air.

Installing an under cabinet heater is a straightforward project that can add convenience and custom comfort. Just be sure to select the appropriate size heater for your space, follow safety precautions, and perform regular maintenance. With their energy-efficient zoned warmth right where you need it, under cabinet heaters are a simple way to stay cozy without cranking up the central heat.