How to Install a Fireplace Blower Kit for More Heat
Installing a fireplace blower kit typically takes 2-4 hours and involves mounting the blower unit, connecting power, and adjusting airflow controls for optimal heat circulation.
A fireplace blower kit can increase your fireplace’s heat output by 50-80% by circulating warm air throughout your room instead of letting it escape up the chimney.
What Is a Fireplace Blower Kit?
Think of a fireplace blower kit as a fan system that pushes heated air into your room. Without it, most of your fireplace’s heat goes straight up the chimney. That’s like throwing money out the window.
The kit includes a blower motor, fan housing, and speed controls. Some models add temperature sensors that turn the fan on automatically when things get hot enough.
Types of Fireplace Blowers
You’ll find three main types when shopping. Each works differently based on your fireplace setup.
Insert Blowers
These go inside fireplace inserts. They’re built into the unit and blow air through vents around the firebox.
Grate Blowers
These sit under your fireplace grate. The fan pushes air up through the burning logs and out into the room.
Fireplace Insert Retrofit Kits
These work for existing masonry fireplaces. You mount them in the fireplace opening or nearby wall space.
Tools and Materials You’ll Need
Grab these items before you start. Having everything ready saves trips to the hardware store.
- Drill with various bits
- Screwdriver set
- Wire strippers
- Voltage tester
- Level
- Measuring tape
- Safety glasses
- Work gloves
Electrical Supplies
- Wire nuts
- Electrical wire (12 or 14 gauge)
- Junction box (if needed)
- Circuit breaker (if adding new circuit)
- GFCI outlet (for some installations)
Safety Precautions Before Starting
Safety comes first. One mistake with electricity or gas can be dangerous.
Electrical Safety
Turn off power at the circuit breaker. Use a voltage tester to confirm power is off. Never work on live electrical connections.
Gas Fireplace Considerations
If you have a gas fireplace, turn off the gas supply. Some gas units need professional installation to maintain warranty coverage.
Ventilation Requirements
Make sure your work area has good airflow. Open windows or doors while working to prevent dust buildup.
Step-by-Step Installation Process
Let’s walk through this together. Take your time and double-check each step.
Step 1: Choose the Right Location
Find a spot where the blower can pull cool air and push warm air effectively. Most units mount on the back wall of the firebox or underneath.
Measure twice, drill once. Mark your mounting holes with a pencil first.
Step 2: Install the Blower Housing
Mount the blower housing using the provided brackets. Make sure it’s level and secure. A wobbly blower will be noisy and less effective.
Some units require you to drill through masonry. Use a masonry bit and go slow to avoid cracking.
Securing the Motor
Attach the motor to the housing according to manufacturer instructions. The motor should sit firmly without vibration.
Step 3: Run Electrical Connections
This is where things get technical. If you’re not comfortable with electrical work, call a professional.
Run wire from your electrical panel to the blower location. Most blowers need 120V power and draw 3-8 amps.
Wiring the Controls
Connect the speed control switch according to the wiring diagram. Common wire colors are:
- Black: Hot wire
- White: Neutral wire
- Green or bare: Ground wire
- Red: Switched hot (for controls)
Step 4: Install Temperature Controls
Many kits include automatic temperature switches. These turn the fan on when the fireplace reaches a set temperature.
Mount the temperature sensor where it can sense heat but won’t get damaged by flames or extreme heat.
Testing Your Installation
Time to see if everything works. Start with basic function tests before firing up the fireplace.
Electrical Testing
Turn power back on and test the blower at different speeds. Listen for unusual noises or vibrations.
Check that all connections are secure and no wires are loose.
Temperature Sensor Testing
If your kit has automatic controls, test them by starting a small fire. The blower should kick on as temperature rises.
Common Installation Problems
Even experienced people run into issues. Here’s how to fix the most common ones.
Blower Won’t Start
Check power connections first. Use your voltage tester to confirm power reaches the motor.
Look for blown fuses or tripped breakers. Sometimes the motor protection switch needs resetting.
Excessive Noise
Loose mounting bolts cause most noise problems. Tighten all connections and check for proper alignment.
Debris in the fan blades can also cause noise and reduce efficiency.
Poor Airflow
Blocked air intakes reduce performance. Clean any dust or debris from intake vents.
Make sure the blower direction is correct. Air should flow from cool areas toward warm areas.
Maintenance Tips for Long Life
A little care keeps your blower running smoothly for years.
Regular Cleaning
Clean the blower and vents monthly during fireplace season. Dust buildup reduces efficiency and can cause overheating.
Use a soft brush or vacuum to remove debris. Don’t use water on electrical components.
Annual Inspections
Check all connections yearly before fireplace season starts. Look for loose wires, worn parts, or signs of overheating.
Lubricate motor bearings if your model requires it. Check your manual for specific maintenance schedules.
When to Call a Professional
Some jobs need expert help. Don’t risk your safety or home for a DIY project.
Electrical Work Beyond Your Skill
If you need to run new circuits or work in your electrical panel, hire an electrician. The cost is worth your safety.
Gas Fireplace Modifications
Gas appliance work often requires licensed technicians. Check local codes before starting.
Cost Considerations
Budget for both the kit and installation costs. Prices vary widely based on features and complexity.
| Item | Price Range | Notes |
|---|---|---|
| Basic Blower Kit | $80-$200 | Manual controls only |
| Automatic Kit | $150-$400 | Temperature controls included |
| Professional Installation | $200-$500 | Varies by complexity |
Energy Savings
Research from the Department of Energy shows that fireplace blowers can reduce heating costs by helping distribute heat more evenly throughout your home.
The improved circulation means you might use your central heating less on mild days when the fireplace can handle the load.
Conclusion
Installing a fireplace blower kit is a smart upgrade that pays for itself in comfort and efficiency. Most homeowners can handle basic installations with patience and the right tools.
Remember that safety comes first. When in doubt, get professional help rather than risk electrical hazards or code violations. Your fireplace should be a source of warmth and relaxation, not worry.
Take your time, follow manufacturer instructions, and test everything thoroughly. You’ll soon enjoy much more heat from every fire you build.
How long does a fireplace blower kit typically last?
Most quality fireplace blowers last 10-15 years with proper maintenance. Motors can run longer if you keep them clean and lubricated according to manufacturer guidelines.
Can I install a blower kit in any type of fireplace?
Not all fireplaces can accommodate blower kits. Zero-clearance fireplaces and some gas units have specific requirements. Check with your fireplace manufacturer for compatibility before purchasing.
Will a blower kit work with both wood and gas fireplaces?
Yes, blower kits work with both fuel types. Gas fireplaces often have built-in blower options, while wood-burning fireplaces typically need retrofit kits.
How much electricity does a fireplace blower use?
Most fireplace blowers consume 100-300 watts of electricity, similar to a few light bulbs. The energy cost is minimal compared to the extra heat you’ll get from your fireplace.
Do I need a permit to install a fireplace blower kit?
Electrical permits may be required if you’re running new wiring or circuits. Check with your local building department before starting the project to avoid code violations.
