Best Chimney Pillow Fireplaces Draft Stopper Options for Tight Energy Savings
Answering the question for homeowners and renters seeking to seal drafts around a fireplace, these chimney pillow and draft stopper products reduce energy loss, odors, and noise while keeping your living space more comfortable. The top picks below cover a range of flue shapes, damper conditions, and installation methods, so you can choose the best fit for masonry fireplaces, round or rectangular flues, and wood stoves. Each option highlights who it’s best for and why it stands out in terms of fit, ease, and effectiveness.
| Product | Best For | Main Benefit |
|---|---|---|
| Door Fireplace Draft Stopper | Brick/masonry fireplaces with rectangular dampers | Easy below-damper installation and versatile fit |
| Flueblocker Round 8-9 Inch | Round chimney flues without relying on the damper | Long-lasting wool plug with year-round use |
| Flueblocker 13″ x 35″ | Rectangular flues in larger openings | Durable wool blocking with snug, custom fit |
| Chimney Flue Plug 8″ x 32″ | Smaller rectangular flues with trim-to-fit option | Fire-resistant felt with telescopic pole for easy placement |
| Magnetic Fireplace Cover 39″ x 32″ | Iron-frame fireplaces with built-in magnetic framing | Strong magnetic hold and broad surface coverage |
Below are detailed product sections to help you compare fit, materials, and installation. Each entry notes the ideal user, potential limitations, and why this model may be the best choice for your home.
Door Fireplace Draft Stopper — Large Plug for Masonry Fireplaces
This inflatable polyurethane plug is designed for brick or masonry fireplaces with rectangular dampers up to 38×16 inches. It installs below the damper quickly and cleanly, reducing energy loss, downdrafts, odors, and insects. Best for homeowners seeking a simple, reversible draft solution with a one-size-fits-most approach. A telescoping pole helps position the pillow accurately. Caution: Installation requires access below the damper, which may be limited in some rooms.
Flueblocker Round 8-9 Inch Plug — Wool Draft Stopper
This 8-9 inch round chimney balloon uses 100% Herdwick wool to seal round flues and works without a damper, great for older or damaged dampers. It provides year-round protection, retaining heat in winter and blocking humidity in summer. Best for round flues where damper function is questionable. It can last seven years with seasonal use; for continuous year-round use, it can last longer. Limitation: Sizing is fixed to 8-9 inch openings and may require trimming for a precise fit.
Flueblocker 13″ x 35″ Wool Chimney Blocker
This model uses dense Herdwick wools to block large rectangular flues up to 13″ x 35″ and provides a snug, pressure-fit seal. It weighs 2.6 lbs and is designed for reusable seasonal installs, offering a long service life with proper trimming of edges. Best for buyers seeking a durable, traditional wool alternative to balloons. Note: Only suited for rectangular flues; measure your opening first to ensure compatibility. Caution: Wool requires careful handling to maintain shape after trimming.
Chimney Flue Plug 8″ x 32″ — Felt Draft Stopper
This felt-based draft blocker is designed for 8″ x 32″ or smaller rectangular flues and includes three sewn-in loops to trim the cover to fit. The high-grade fire-resistant felt blocks airflow up and down the chimney, helping to reduce energy costs by sealing the fireplace when not in use. Best for those who want a rigid yet flexible fabric option with a telescopic pole for easy placement. Limitation: Requires damper to be slightly larger than the flue opening for a secure seal, and the pole length ranges from 16 to 60 inches, which may require repositioning during use.
Magnetic Fireplace Cover 39″ x 32″ — Magnetic Blocker
This large, magnet-backed cover uses twelve built-in magnets to securely attach to iron fireplace frames, creating a broad shield against drafts, odors, and debris. Best for iron-frame fireplaces where a magnetic seal is feasible. It helps reduce heating and cooling costs by minimizing warmth exchange through the opening. Caution: Magnets work best on iron frames; non-magnetic frames will not hold as well, and magnets are not designed for high heat exposure over long periods.
Buying Guide
What should you consider when choosing a chimney draft stopper?
- Flue shape and size: Rectangular vs. round openings determine which products fit best. Measure width, height, and depth before buying.
- Damper condition: Some solutions rely on damper presence (below-damper plugs), while others seal without relying on the damper (wool blocks, felt plugs).
- Installation method: Consider whether you want a quick-install inflatable plug, a trim-to-fit wool blocker, or a telescoping pole for easy placement.
- Material durability: Wool products offer long lifespans with repeated seasonal use; felt and inflatable plugs can vary in lifespan and require care.
- Maintenance and longevity: Wool-based blockers often last several seasons; magnetic covers depend on frame material for secure attachment.
Frequently Asked Questions
- Do draft stoppers work for both winter and summer use? Yes, most options reduce heat loss in winter and block hot air in summer, but the effectiveness depends on fit and flue conditions.
- Can I install these myself without tools? Most products are designed for DIY installation, with trimming and simple placement; a few may require minor trimming or positioning adjustments.
- Will these damage the fireplace? Properly fitted, most draft stoppers do not contact the firebox; follow manufacturer instructions to avoid contact with heat sources.
- Are wool blockers reusable? Yes, wool blockers are designed for long-term reuse, with careful trimming to maintain a tight seal.
- Is a damper required for sealing? Not always. Several options seal the flue independently of damper function, which is beneficial for damaged or nonfunctional dampers.
- How do I measure for a good fit? Measure the flue opening above the firebox, then choose a blocker that’s at least 1 inch larger in each dimension for a snug, pressure-fit seal.