Best Mr. Heater Patio Heaters: 2 Models Compared
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You can find the best mr heater patio heaters in this guide. We compared 2 models from the brand. Mr. Heater offers portable propane units in red and black. The top pick is the Mr. Heater 18,000 BTU Big Buddy PRO. It leads because its 18,000 BTU output suits large patios needing high heat. All selections rely on published specifications like size, weight, and dimensions. This approach ensures you choose based on practical data rather than marketing claims.
Quick picks
| # | Product | Best for | Price |
|---|---|---|---|
| 1 | Mr. Heater 18,000 BTU Big Buddy PRO Best overall | large patios needing high output | Check price of Mr. Heater 18,000 BTU Big Buddy PRO on Amazon |
| 2 | Mr. Heater 18,000 BTU Big Buddy Best budget | small indoor or outdoor spaces | Check price of Mr. Heater 18,000 BTU Big Buddy on Amazon |
Our 2 picks
Mr. Heater 18,000 BTU Big Buddy PRO
Best for: large patios needing high output
- Fuel Type
- Propane
- Heat Output
- 18,000 BTU
- Dimensions
- 18.5 × 18 × 11.4 inches
- Weight
- 14.1 pounds
View on Amazon: Mr. Heater 18,000 BTU Big Buddy PRO Affiliate link
The Mr. Heater 18,000 BTU Big Buddy PRO Series delivers dual radiant and convection heat for spaces up to 450 square feet. It offers three output levels: 4,000, 9,000, or 18,000 BTU. A built-in fan enhances air flow. On low heat, it runs for up to 216 hours using two 20lb propane tanks. This model weighs 14.1 pounds and measures 18 by 18.5 by 11.4 inches.
Pros
- 18,000 BTU max output heats up to 450 square feet
- Dual heating system combines radiant warmth with convection air flow
- Built-in high-powered fan improves heat distribution
- Long runtime of up to 216 hours on low setting
Cons
- Requires two 20lb propane tanks for operation
- Hose for extended runtime is sold separately
- Red color limits aesthetic options
Good fit if
- You need a high-output heater for larger patios
- You want adjustable heat settings from 4,000 to 18,000 BTU
- You prefer dual radiant and convection heating
Skip if
- You only need heat for a small area under 200 square feet
- You prefer a portable unit under 10 pounds
- You want a heater with a built-in battery or electric ignition
Verdict: Mr. Heater 18k BTU Big Buddy PRO suits you if you need serious heat for a large outdoor space. Its dual heating system and fan make it effective for colder evenings. The high BTU output ensures quick warmth for gatherings.
Mr. Heater 18,000 BTU Big Buddy
Best for: small indoor or outdoor spaces
- Heat Output
- 18,000 BTU
- Color
- Black
- Shape
- Square
- Dimensions
- 16.7 × 11.2 × 12 inches
- Weight
- 13 pounds
View on Amazon: Mr. Heater 18,000 BTU Big Buddy Affiliate link
The Mr. Heater 18,000 BTU Big Buddy delivers radiant heat with three adjustable settings: 4,000, 9,000, or 18,000 BTU per hour. It weighs 13 pounds and measures 11.2 by 12 by 16.7 inches. This unit heats spaces up to 450 square feet. It is approved for both indoor and outdoor use. You get flexible output control for varying weather conditions.
Pros
- Three heat settings for precise control
- Heats up to 450 square feet
- Approved for indoor and outdoor use
- Compact 13-pound portable design
Cons
- 18,000 BTU output is lower than the 18,000 BTU Big Buddy PRO Series
- No remote control or digital display listed
- Standard propane operation requires manual adjustment
Good fit if
- You need a heater for small to medium patios
- You want indoor and outdoor versatility
- You prefer manual temperature control
Skip if
- You require high-output heating for large areas
- You need remote or smart control features
- You prefer digital displays for settings
Verdict: Mr. Heater 18k BTU Big Buddy suits those who need a reliable, portable heater for small spaces. It offers solid versatility for indoor or outdoor use without the bulk of higher-output models.
Specifications side by side
| Spec | Mr. Heater 18,000 BTU Big Buddy PRO | Mr. Heater 18,000 BTU Big Buddy |
|---|---|---|
| Fuel Type | Propane | not stated |
| Heat Output | 18,000 BTU | 18,000 BTU |
| Color | Red | Black |
| Shape | not stated | Square |
| Dimensions | 18.5 × 18 × 11.4 inches | 16.7 × 11.2 × 12 inches |
| Weight | 14.1 pounds | 13 pounds |
| Size | 18000 | 18000 |
| Model | MH18B | MH18B |
Mr. Heater Models Compared
These two propane heaters share an 18,000 BTU output. They differ in design and specific features. The Mr. Heater 18,000 BTU Big Buddy PRO includes a fan and dual heating system. It measures 18.5 inches long. This model suits large patios needing serious heat for colder evenings. Its red finish matches its robust build.
The standard Mr. Heater 18,000 BTU Big Buddy lacks the fan. It is slightly more compact at 16.7 inches long. This version is ideal for small indoor or outdoor spaces. You get reliable portability without the bulk of higher-output units. Both units weigh around 13 to 14 pounds. Choose the PRO for speed and the standard model for compact versatility.
Who Should Buy Mr. Heater
Mr. Heater’s current lineup focuses on high-output portable propane units. Both models deliver 18,000 BTUs, making them suitable for large patios or small indoor spaces. The range spans from 13 pounds to 14.1 pounds, with widths varying between 11.2 and 18 inches. You will find options in red and black finishes. However, the list lacks lower-output models for smaller areas. There are no electric or infrared options available here. If you need a lightweight, low-BTU heater for a balcony, this brand’s current selection does not cover that need. You must look elsewhere for compact, low-power solutions.
How to choose the right Mr. Heater
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Check the heat output
You should look at the BTU rating to determine how much warmth a unit provides. Both models in this guide offer 18,000 BTUs. This high output ensures quick warmth for gatherings on colder evenings. If you need serious heat for a large outdoor space, this output level is effective. Higher BTU numbers generally mean faster heating times. You can use this spec to compare the intensity of heat across different portable propane heaters in the market.
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Consider the weight
Portability depends heavily on the unit's weight. The Mr. Heater 18,000 BTU Big Buddy weighs 13 pounds. The Big Buddy PRO is slightly heavier at 14.1 pounds. You should choose a lighter model if you plan to move the heater frequently. A difference of one pound may not seem significant, but it adds up over time. Check the weight spec to ensure the unit fits your carrying needs and storage constraints effectively.
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Look at the dimensions
The physical size affects where you can place the heater. The Big Buddy PRO measures 18.5 inches long and 18 inches wide. The standard Big Buddy is more compact at 16.7 inches long and 11.2 inches wide. You should measure your patio area to ensure the heater fits comfortably. Larger units may provide better heat distribution but take up more floor space. Compare the length and width specs to find the best fit for your layout.
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Evaluate the color options
While color does not affect performance, it matters for aesthetics. The Big Buddy PRO is available in red. The standard Big Buddy is listed as black in some attributes. You should choose a color that matches your outdoor furniture or decor. Red may stand out more, while black blends in with many patio settings. Check the color spec to ensure the heater complements your existing outdoor style and personal preference.
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Review the design features
Specific features impact how the heater operates. The Big Buddy PRO includes a fan and a dual heating system. These features make it effective for colder evenings by distributing heat more evenly. You should check for these features if you need consistent warmth. The standard model may lack these specific additions. Compare the feature lists to determine which design better suits your heating needs and usage patterns.
Frequently asked questions
Does the Big Buddy PRO have a fan?
Yes, the Mr. Heater 18,000 BTU Big Buddy PRO includes a fan. This feature helps distribute heat more evenly across your patio. It works alongside a dual heating system to warm larger outdoor spaces quickly. You will find this combination effective for colder evenings when you need serious warmth for gatherings.
What is the weight of the Big Buddy PRO?
The Mr. Heater 18,000 BTU Big Buddy PRO weighs 14.1 pounds. This weight makes it portable enough to move around your patio. You can carry it easily to different spots as needed. It is slightly heavier than the standard Big Buddy model, which tips the scales at 13 pounds.
Is the Big Buddy suitable for indoor use?
Yes, the Mr. Heater 18,000 BTU Big Buddy is suitable for small indoor or outdoor spaces. Its design allows for versatile use in confined areas. You should ensure proper ventilation when using it indoors. This model offers reliable heat without the bulk of higher-output units, making it a practical choice for various settings.
How wide is the standard Big Buddy heater?
The standard Mr. Heater 18,000 BTU Big Buddy is 11.2 inches wide. This compact width helps it fit into smaller patios or corners. It is narrower than the Big Buddy PRO, which measures 18 inches wide. The smaller footprint allows for flexible placement in tighter outdoor areas.
What color is the Big Buddy PRO?
The Mr. Heater 18,000 BTU Big Buddy PRO is red. This color matches the standard Big Buddy model as well. Both units share the same red finish despite their different sizes and features. The consistent color scheme helps them blend with typical outdoor decor while remaining visible.
Which model is better for large patios?
The Mr. Heater 18,000 BTU Big Buddy PRO is better for large patios. Its dual heating system and fan provide more effective heat distribution. The larger dimensions, including an 18-inch width, help cover more ground. You will find it ideal for gathering spaces where quick warmth is essential.

