A pellet stove insert is designed to fit an existing fireplace, while a freestanding pellet stove is a standalone heating appliance. The ComfortBilt HP22i is best for shoppers who want an insert with a supplied finishing shroud and remote; the freestanding Cleveland Iron Works model is better for buyers prioritizing a large hopper. The two Freedom Stoves PS21 options suit shoppers who value battery backup and connected controls. Compare your fireplace, floor plan, desired coverage, and power-outage needs before choosing.
| Product | Type | Best suited for |
|---|---|---|
| ComfortBilt HP22i | Insert | Existing fireplace installations |
| Cleveland Iron Works Large | Freestanding | Large hopper capacity and Wi-Fi |
| ComfortBilt HP22 | Freestanding | Programmable heat settings and thermostat |
| Freedom Stoves PS21, Sandstone Grey | Freestanding | Battery backup and app-based controls |
| Freedom Stoves Independence PS21 | Freestanding | Battery backup with included batteries and vent kit |
ComfortBilt HP22i Pellet Stove Fireplace Insert

Best for: Homeowners who have a suitable fireplace opening and want a pellet stove designed to install as an insert.
The HP22i is a zero-clearance fireplace insert with a listed heating capacity of up to 2,800 square feet under mild temperature conditions. It delivers up to 41,000 BTUs per hour and has a 47-pound hopper, with a stated burn time of up to 18 hours. The package includes a finishing shroud, ash vacuum, and remote control.
Choose this model over a freestanding stove if using the existing fireplace location is central to your plan. Its insert format can be a better fit when a standalone appliance would take up wanted floor space. The listed accessories also provide useful installation finishing and cleaning items.
Limitation: Its coverage figure is qualified for mild temperature conditions, and the 47-pound hopper is smaller than the 130-pound hopper listed for the Cleveland Iron Works model. Confirm fireplace suitability and installation requirements before purchase.
Cleveland Iron Works Large Pellet Stove

Best for: Buyers seeking a freestanding stove with a large pellet hopper and built-in Wi-Fi.
This model is listed for spaces from 2,000 to 3,000 square feet and has a 130-pound hopper. Its listed features include built-in Wi-Fi and smart-home technology. Compared with the ComfortBilt HP22i insert, this is a standalone option with a substantially larger stated hopper capacity.
Choose this stove if you prefer a freestanding appliance and want to prioritize hopper capacity. A larger hopper may reduce how often it needs refilling compared with a smaller hopper, although actual refill frequency depends on operating conditions and pellet use. Wi-Fi is a useful listed feature for shoppers who want connected control.
Limitation: The provided product details do not state a burn time, BTU output, or included accessories. Compare those details in the manufacturer’s current specifications before deciding, especially if you need a direct match with another stove’s stated output.
ComfortBilt HP22 Pellet Stove

Best for: Buyers who want a freestanding stove with multiple power settings and a programmable thermostat.
The HP22 is rated to heat up to 2,800 square feet under mild temperature conditions. It produces up to 41,000 BTUs per hour and has a 55-pound hopper with a stated burn time of up to 20 hours. Five power settings and a programmable thermostat are listed to help manage comfort and pellet use.
Compared with the HP22i insert, this model is a standalone stove rather than a fireplace insert. Its listed hopper is larger, and its stated maximum burn time is longer. Choose it if you want a freestanding layout and value adjustable operation through the five power settings and thermostat.
Limitation: The stated coverage is conditional on mild temperature conditions, so it should not be treated as a guarantee for every home or climate. If your priority is fitting a fireplace opening, the HP22i is the more relevant format to investigate.
Freedom Stoves Independence PS21 With Removable Legs

Best for: Buyers who want a freestanding stove with Wi-Fi controls and battery backup, and can supply the specified batteries.
The PS21 is listed for areas from 800 to 1,800 square feet and produces up to 34,700 BTUs. Its features include a stacked-tube heat exchanger, touchscreen, mobile app, and remote control. A 24-volt DC battery backup system uses two 12-volt batteries, which are sold separately; the product listing states more than 40 hours of runtime.
Choose this option if your priority is control flexibility or continued operation during a power outage, and you are comfortable sourcing the batteries separately. Its stated coverage range is lower than the ranges listed for the HP22 models and Cleveland Iron Works stove, making it a better comparison for smaller spaces.
Limitation: The batteries are sold separately, so they are an additional requirement for using the stated backup feature. Confirm the system’s installation and operating requirements before relying on it for outage protection.
Freedom Stoves Independence PS21 With Batteries And Vent Kit

Best for: Buyers considering the PS21 who prefer a listing that specifies included batteries and a vent kit.
This freestanding model is listed at up to 34,700 BTUs for spaces from 800 to 1,800 square feet. Its features include steel construction and a 24-volt DC battery backup that is stated to provide more than 40 hours of heat during power outages. The product name also specifies that batteries and a vent kit are included.
Compared with the other PS21 listing, this option may suit buyers who want the battery and vent kit identified as part of the package. Its stated heating output and coverage make it more appropriate to compare with other models intended for smaller areas than the HP22 or Cleveland Iron Works options.
Limitation: The provided feature details do not mention Wi-Fi, touchscreen controls, a mobile app, or a remote. If those controls matter, verify the exact package specifications rather than assuming they are included because another PS21 listing mentions them.
Pellet Stove Insert Vs Freestanding: Key Differences
An insert is built around a fireplace installation; a freestanding stove is a separate appliance that occupies floor space. Neither type is automatically best for every home. The right choice depends on the available installation location, the home’s heating needs, the product’s specifications, and the installation requirements.
| Comparison point | Insert | Freestanding stove |
|---|---|---|
| Placement | Designed for a fireplace opening or insert location | Placed as a standalone appliance |
| Example in this guide | ComfortBilt HP22i | Cleveland Iron Works, ComfortBilt HP22, and Freedom PS21 models |
| Product-specific features | HP22i includes a finishing shroud, ash vacuum, and remote | Features vary by model, including hopper capacity, Wi-Fi, thermostat, or backup power |
| Key check before buying | Confirm the fireplace and installation fit | Confirm placement, venting, and required clearances |
Buying Guide: How To Choose Between An Insert And Freestanding Stove
Do you have a suitable fireplace?
Start by checking whether you have an existing fireplace that can accommodate an insert. An insert such as the ComfortBilt HP22i is designed for this type of installation. Do not assume that every fireplace opening is suitable: verify dimensions, installation conditions, and venting requirements using the product documentation and qualified installation advice.
If there is no appropriate fireplace, or you prefer a standalone appliance, compare freestanding models. Account for where the stove can be placed and the space it will occupy. Review the manufacturer’s requirements for clearances and venting before making a selection.
How much area do you need to heat?
Use each product’s stated coverage as a starting point, not a guaranteed result. The HP22i and HP22 are listed for up to 2,800 square feet under mild temperature conditions. The Cleveland Iron Works model is listed for 2,000 to 3,000 square feet. The PS21 listings specify 800 to 1,800 square feet.
Actual heating needs depend on conditions that vary from home to home. Compare the product’s coverage range with the area you want to heat, and ask an installer or manufacturer representative whether the model suits your home. Avoid choosing by the largest coverage number alone.
How important are hopper size and burn time?
A hopper holds the pellets that fuel the stove. Among the products here, the Cleveland Iron Works model lists a 130-pound hopper, the HP22 a 55-pound hopper, and the HP22i a 47-pound hopper. The HP22 lists up to 20 hours of burn time, while the HP22i lists up to 18 hours.
These figures are product specifications, not promises of identical day-to-day operation. The provided details for the Cleveland Iron Works and PS21 models do not state burn times. If refill frequency matters, compare hopper capacity and manufacturer-provided operating information for the exact model.
Do you need backup power or connected controls?
The two Freedom Stoves PS21 listings identify a 24-volt DC battery backup with more than 40 hours of stated runtime. One listing says two 12-volt batteries are sold separately; the other product name specifies included batteries. Check the exact package, since included components differ between listings.
For connected controls, the Cleveland Iron Works model lists built-in Wi-Fi. One PS21 listing specifies Wi-Fi, touchscreen, mobile app, and remote control. The ComfortBilt HP22 lists a programmable thermostat and five power settings, while the HP22i includes a remote. Match the feature list to the way you want to control the stove.
What should you verify before ordering?
- Confirm the appliance type and whether the installation location is suitable.
- Check the manufacturer’s current specifications for venting, dimensions, clearances, and installation requirements.
- Verify which accessories, batteries, and controls are included with the specific product listing.
- Compare stated heating coverage and output with your home’s needs rather than relying on a single maximum figure.
- Ask a qualified professional about installation and local requirements before operating the appliance.
Frequently Asked Questions
Is a pellet stove insert better than a freestanding pellet stove?
Neither type is better for every buyer. An insert is designed for a suitable fireplace location, while a freestanding stove is a standalone appliance. Choose based on your home’s layout, installation options, and preferred features.
Can a pellet stove insert go in any fireplace?
No. The fireplace and installation must meet the stove’s requirements. Check the product documentation and consult a qualified installer before selecting an insert.
Which product listed here has the largest hopper?
The Cleveland Iron Works Large Pellet Stove lists a 130-pound hopper. The ComfortBilt HP22 lists 55 pounds, and the HP22i insert lists 47 pounds.
Which models list battery backup?
Both Freedom Stoves Independence PS21 listings specify 24-volt DC battery backup. One says the two required 12-volt batteries are sold separately; the other product name says batteries are included.
Are the listed heating-area figures guaranteed?
No. They are product specifications, and the ComfortBilt HP22 and HP22i figures are specifically stated for mild temperature conditions. Home conditions and installation affect whether a stove suits a particular space.
Should I choose based on BTU output or square-foot coverage?
Compare both figures alongside your home’s heating needs and the manufacturer’s installation guidance. Neither BTU output nor coverage alone establishes that a stove is the right fit for your space.