Stop draft from fireplace efficiently with purpose-built blockers designed for brick, metal, and masonry openings. This guide highlights five top options that reduce energy loss, odors, and heat escape while fitting a range of fireplace styles. Ideal for homeowners seeking an easy, mess-free setup that improves comfort without major renovations. Below you’ll find concise buying guidance, quick comparisons, and practical pros and cons for each product.
| Product | Best For | Key Benefit |
|---|---|---|
| Fireplace draft stopper (large plug) | Brick/masonry fireplaces with dampers | Easy installation below the damper |
| Flueblocker 13″x35″ Wool | Rectangular flues seeking durable, reusable solution | Long-lasting wool blocker with pressure fit |
| Magnetic Fireplace Cover 42″x32″ | Iron-frame fireplaces | 12 magnets for secure, low-profile fit |
| Flehomo Magnetic Draft Stopper (2 pack) | Magnetic vent covers | Two-pack flexibility, strong magnets |
| Magnetic Fireplace Cover 39″x32″ | Iron-frame fireplaces | Similar magnet system, versatile sizing |
Fireplace Draft Stopper For Masonry Fireplaces
The Fireplace Draft Stopper by Battic Door is designed for brick or masonry fireplaces with rectangular dampers up to 38×16 inches. It installs below the damper with no mess, using an inflatable polyurethane plug. Best for homeowners who want a quick, tool-free install and a one-size-fits-most solution to reduce energy loss, downdrafts, odors, and pests. Best for: brick or masonry fireplaces needing a simple, below-damper plug-in option.
Why selected: It provides a fast, clean install and a practical solution that minimizes heat escape, odors, and insects. The telescoping pole supports a pillow for stable positioning. Caution: Verify damper size to ensure full coverage; oversized dampers may require a different model.
Flueblocker 13″x35″ Wool Fireplace Draft Stopper
Flueblocker uses dense Herdwick wool to block drafts in rectangular flues up to 13″ x 35″. It is a reusable, pressure-fit blocker designed for long-term seasonal use, with a 1-year limited warranty. Best for: homeowners seeking a durable, wool-based solution that avoids inflatable devices and aims for a snug fit.
Why selected: Wool is a natural fiber that holds shape well and reduces heat loss. The blocker is designed for rectangular openings and benefits from simple trimming for a snug fit. Caution: Confirm your flue is rectangular and within size limits; wool requires careful sizing for a proper seal.
Magnetic Fireplace Cover 42″x32″
The Whumsdog Magnetic Fireplace Cover features built-in magnets around a thick, flame-retardant oxford cloth. It claims strong magnetic adhesion and a tight seal around iron frames. Best for: iron-frame fireplaces where a low-profile, magnet-secured barrier is preferred. Limitation: Magnets work best on metal frames; non-magnetic surrounds may reduce adhesion.
Flehomo Magnetic Draft Stopper (2 Pack)
This two-pack is designed to block drafts through magnetic fireplace vents. It emphasizes insulation by preventing heat loss and stabilizing indoor temperatures. Best for: magnetic vent covers where you want multiple doors or openings covered with a single purchase. Limitation: Only compatible with magnetic fireplace vents; verify vent compatibility before buying.
Magnetic Fireplace Cover 39″x32″
This CADARA Magnetic Fireplace Cover uses twelve built-in magnets to attach to iron frames. It aims to reduce heat loss and draft intrusion while maintaining a neat look. Best for: iron-frame fireplaces needing a magnetized shield with a low-profile look. Limitation: Magnets require iron-containing metal frames to function optimally.
Buying Guide: How To Choose The Right Fireplace Draft Stopper
- Fireplace type and opening shape: Rectangular dampers, brick openings, and iron-frame surrounds each need different attachment methods (inflatable plug, pressure-fit wool, or magnets). Confirm damper size and opening shape before purchasing.
- Attachment method: Choose between inflatable plugs, pressure-fit wool blockers, and magnets depending on the fireplace’s frame material and your preference for installation and removal.
- Durability and reuse: Wool blockers offer long lifespans with careful sizing, while inflatable plugs provide quick setup but may require replacement seals over time.
- Heat and chemical exposure: Magnets work best on iron frames. Avoid long-term exposure to high heat areas that can degrade magnets or fabric.
- Energy savings potential: A well-sealed fireplace reduces heat loss in winter and prevents cool air from entering in summer, which can lower heating and cooling costs over time.
FAQ
- Will a draft stopper block all drafts from my fireplace? It can significantly reduce drafts but sealing results depend on proper fit and the opening’s shape and material.
- Are these easy to install without tools? Many options are tool-free, such as inflatable plugs and magnetic covers, though some require simple trimming for a snug fit.
- Can I reuse a wool blocker year after year? Yes, wool blockers are designed for multiple seasons with proper sizing and care.
- Do magnets affect fireplace operation or heat? Magnets are designed for attachment and generally do not impede operation; avoid prolonged exposure to high heat as it can reduce magnetic strength over time.
- How do I measure my fireplace opening? Measure the width and depth of your flue or damper opening just above the firebox; choose a blocker that is at least 1 inch larger than each dimension for a secure seal.