Wood Fireplace Blower Setup Guide
Adding a blower to your wood fireplace can transform its performance. Blowers circulate warm air from the firebox into the room, preventing heat from escaping up the chimney. This allows you to enjoy more efficient, comfortable heating throughout the house.
Wood fireplace blowers, also called fireplace fans or circulators, are a simple but highly effective accessory. Whether your goal is to reduce energy costs, improve heat distribution, or boost comfort levels, a properly installed blower system can make a big difference.
How a Wood Fireplace Blower System Works
Blower systems use a fan to push air heated by the fire out into the room. The blower is installed inside or near the firebox and draws air through vents at the back. As this air passes over the fire, it heats up before being forced out by the fan.
There are two main types of fireplace blowers - electric and convection. Electric blowers use a motorized fan connected to an external power source. They deliver a high volume of airflow and can be precisely controlled. Convection blowers have an integrated fan powered by the rising warm air itself, requiring no electricity. They provide a more gentle airflow.
The blower connects to ductwork leading into the room. Flexible aluminum or steel ducts redirect the heated airflow. Careful duct positioning allows you to channel warmth wherever needed most. This gives you whole-home heating capabilities.
How Blowers Integrate with Masonry Fireplaces
For masonry fireplaces, the blower installs in the firebox floor or behind the lower air vents. Ducts route through the side or back of the surrounding brickwork. Blower systems can be easily added to existing masonry fireplaces.
Blower Placement in Prefab Fireplaces
Prefab fireplaces often have dedicated compartments built-in to house the blower. Ductwork runs underneath or behind the fireplace, exiting through the exterior wall. Some units even come with blowers pre-installed.
Benefits of a Wood Fireplace Blower System
Adding a blower provides many rewards that enhance your fireplace experience:
- Improves heat circulation efficiency by up to 50%
- Distributes warmth to more rooms in your home
- Allows you to lower fireplace temperatures while maintaining comfort
- Reduces reliance on central heating and lowers energy costs
- Adds adjustable comfort control with thermostat modes
Blowers prevent convection airflow from carrying heat straight up the chimney. More warmth is pushed into your living space, raising comfort and efficiency. Positioned correctly, ducts can channel this warmth to bedrooms, basements and wherever you need it most.
Key Considerations When Choosing a System
Selecting the right wood fireplace blower for your needs involves weighing several factors:
Fireplace Size
Consider the size of your fireplace opening and choose a blower with adequate CFM airflow for the space. Too small a fan won't circulate enough heat. Oversized units run less efficiently.
Fireplace Type
Blowers for masonry fireplaces differ from those made for prefabs. Ensure the system works with your existing fireplace infrastructure.
Electric vs Convection
Electric blowers deliver stronger airflow. Convection units run silently using natural airflow. Consider noise, airflow needs and power access.
Blower Speed and Air Volume
Higher speed blowers move more cubic feet per minute (CFM). Calculate required CFM by multiplying fireplace opening height by width. Add 500 CFM for masonry or 1000 CFM for prefabs.
Controls
Manual switches or thermostats allow airflow control. Thermostats automatically adjust fan speed to maintain set temperatures.
Installation Requirements
Factor in duct routing, wiring, framing and finish work needed. This impacts installation cost and complexity.
Installing a Wood Fireplace Blower
Proper installation is crucial for safety and performance. Here's an overview of the process:
Professional vs DIY Installation
Installing a blower involves ductwork, electrical work and reframing. Unless you're experienced, have a professional handle it.
Safety Considerations
Ensure proper fireplace ventilation and avoid blowing air on flames. Position ductwork safely to prevent fire hazards or carbon monoxide buildup.
Required Tools and Materials
You'll need ducting, vent covers, wire, framing lumber and finishes. Have fasteners, silicone, insulation, drywall, and basic hand tools on hand.
Step-by-Step Installation
Typical steps include:
- Turn off fireplace gas or electricity
- Remove fireplace backing or floor section if needed
- Install blower unit with metal strapping or bolts
- Run wiring to nearby outlet and install switch
- Attach ducting and vents
- Reframe around fireplace to enclose ductwork
- Insulate and refinish walls
- Test blower and seal vents
Testing and Troubleshooting
Inspect all connections for leaks and ensure proper airflow from each vent. Adjust ducts if needed to balance heat distribution.
Operating and Maintaining Your Fireplace Blower
Follow these tips to keep your blower running smoothly for years:
- Read manufacturer operating guidelines
- Clean intake vents regularly to remove dust buildup
- Replace air filters as needed per manual instructions
- Lubricate blower motor annually
- Inspect wiring connections
- Reduce blower speed to lower noise if desired
- Use timer or thermostat to maximize efficiency
Basic maintenance keeps the system clear of obstructions and operating at peak performance. Reduce speed or insulate ducts to minimize noise if required.
Comparing Top Wood Fireplace Blower Brands
Trusted manufacturers like Tjernlund and Plenum offer reliable, durable blower options. Here's how some top brands compare:
| Brand | Airflow | Controls | Noise | Price |
|---|---|---|---|---|
| Tjernlund | 1650 CFM | Thermostat | Moderate | $$$$ |
| Plenum | 2000 CFM | Variable Speed | Low | $$$ |
| US Stove | 1200 CFM | Manual | High | $ |
Tjernlund and Plenum offer robust airflow with thermostat control for set-and-forget convenience. US Stove is a budget-friendly manual blower option.
Costs of Wood Fireplace Blower Systems
A complete blower system ranges from $300-$1000 depending on size and features. Key factors impacting cost include:
- Blower unit price ($100-$500)
- Professional installation fees ($200-$500)
- Ducting and vent materials ($50-$200)
- Construction and finishing work ($0-$1000)
Going the DIY route can save on labor, but requires expertise working with ducts, wires and framing finishes. Most homeowners utilize professional installers for best results.
Payback Period
With blowers cutting wood consumption by up to 50%, the average payback period is 1-2 years through energy savings. This makes them a smart investment.
Cost Comparison Table
| System | Product Cost | Installation | Total Cost |
|---|---|---|---|
| Contractor Install | $300 | $500 | $800 |
| DIY Install | $500 | $200 | $700 |
| Premium System | $600 | $800 | $1400 |
A mid-range blower with professional installation typically runs $700-$800. DIY provides small savings, while premium systems with more ductwork cost up to $1400.
Troubleshooting Common Blower Issues
If your fireplace blower isn't operating properly, try these troubleshooting tips before calling a technician:
Blower Not Starting/Stopping
- Check for tripped breaker or damaged wiring
- Ensure blower switch is on
- Test/replace capacitors or fan motor if needed
Noisy Blower
- Lubricate or replace blower motor
- Tighten or adjust blower mount
- Insulate ductwork to muffle vibration noise
Weak Airflow
- Clear intake vents of obstructions
- Ensure ductwork is properly connected
- Check for leaks in duct joints and seals
For any complex electrical or mechanical issues, contact a qualified technician to service your blower.
Safety Tips and Precautions
Observing a few key safety practices ensures safe, efficient blower operation:
- Have a licensed electrician handle wiring
- Prevent fan airflow from blowing directly on flames
- Route ductwork to prevent fire/CO hazards
- Protect ducts to avoid crushing or punctures
- Keep children/pets away from hot vents
Exercise caution when working around your fireplace, and always switch the blower off before inspecting or cleaning.
FAQs About Wood Fireplace Blowers
How Difficult Is It to Install a Fireplace Blower?
Installation requires ductwork, electrical wiring and some light framing. Unless you have experience in these areas, professional installation is recommended. Hiring a contractor takes the hassle out of the job.
Where Should I Place the Blower System Duct Vents?
Vents should direct airflow to your main living areas and bedrooms. Position vents high on walls to circulate warmth best. Avoid blowing directly on furnishings or windows.
Which Is Better - Electric or Convection Blowers?
Electric blowers deliver stronger, controlled airflow. Convection units run more silently but have less adjustable output. Choose based on your needs and fireplace type.
Can I Install a Blower on My Gas Fireplace?
Yes, many gas fireplaces can also accommodate blower systems. Ensure your unit is compatible before purchasing.
Adding a blower kit is one of the best ways to boost your traditional wood fireplace's performance. With the ability to circulate warmth throughout your home, you'll enjoy greater comfort and efficiency.
Just be sure to select the right blower model for your fireplace size and type. And have a professional handle installation unless you're experienced with ductwork, wiring and framing. With proper setup, a wood fireplace blower system will provide cozy, even heat for years to come.