Buying Guide
5 Best Space Heater For 30 Amp RV in 2026: A Practical RV Guide
Compare five plug-in and wall-mounted heaters for 30-amp RV hookups by amp draw, wattage steps, thermostat and anti-freeze features.
By Hardcastle's RV Editors
10 min read5 products evaluated
A 30-amp RV service gives you about 3,600 watts at 120V to share between the air conditioner, microwave, water heater and everything else, so a heater has to be judged by what it leaves you. An 11-amp heater takes over a third of the service by itself.
This guide ranks five heaters on that budget, all of which plug into a normal 120V outlet. A thermostat and low settings are what actually let a heater coexist with other loads.
Hardcastle’s RV field notes
The Rig Fit Check
A quick way to connect the shortlist to the space, workload and ownership details that matter after the box arrives.
- Start with the job
- Caframo True North Heater. Low Profile leads this shortlist for Parked winter rigs. Use that fit as a reference point, then compare the alternatives against your own space and workload.
- Specs that separate the picks
- The first details to compare are Thermostat, 3 heat and 2 fan settings, 11 amps, 1325 watts, 750 and 1500W settings. Confirm the exact model and included components before ordering.
- Trade-off to plan for
- Wattage is not stated on the listing
The Practical Shortlist
A road-tested-thinking look at 5 options, organized around the job each one suits best.
Best Overall for 30-Amp RVs
Caframo True North Heater. Low Profile
Parked winter rigs
Our take Check price for Caframo True North Heater. Low Profile (opens in a new tab)
Best Fixed RV Install
Suburban Wall Mount RV Electric Heater
Permanent installs
Our take Check price for Suburban Wall Mount RV Electric Heater (opens in a new tab)
Best Dual-Wattage Portable
Xtreme Heaters Portable Boat Cabin RV Space Heater with Tip-Over Shutoff
Movable heater
Our take Check price for Xtreme Heaters Portable Boat Cabin RV Space Heater with Tip-Over Shutoff (opens in a new tab)
Best Quiet Tower
DREO Space Heater Large Room
Quiet living areas
Our take Check price for DREO Space Heater Large Room (opens in a new tab)
Best Low-Load Supplement
450W Space Heater
Supplemental bedroom heat
Our take Check price for 450W Space Heater (opens in a new tab)
| Pick | Best for | Key spec | Price |
|---|---|---|---|
| Parked winter rigs | Thermostat, 3 heat and 2 fan settings | Check price for Caframo True North Heater. Low Profile (opens in a new tab) |
| Permanent installs | 11 amps, 1325 watts | Check price for Suburban Wall Mount RV Electric Heater (opens in a new tab) |
| Movable heater | 750 and 1500W settings | Check price for Xtreme Heaters Portable Boat Cabin RV Space Heater with Tip-Over Shutoff (opens in a new tab) |
| Quiet living areas | 30 inch tower, 120 degree oscillation | Check price for DREO Space Heater Large Room (opens in a new tab) |
| Supplemental bedroom heat | 350W, 2.9 amps per spec | Check price for 450W Space Heater (opens in a new tab) |
Why Each Pick Made the Cut
Best Overall for 30-Amp RVs1 of 5
Caframo True North Heater. Low Profile on Amazon (opens in a new tab)
Choose Caframo True North Heater. Low Profile for anti-freeze setting turns on at 38°F.
Best for
- Parked winter rigs
Why it made the shortlist
The Caframo True North is a low-profile electric heater with an adjustable thermostat, three heat and two fan settings and ultra-quiet operation. Its anti-freeze setting turns on automatically when the air drops to 38°F, which suits a parked rig, and its low profile is described as preventing tip-overs.
Against Suburban Wall Mount, it is a portable heater rather than a fixed install.
Best for a parked or stored RV that needs freeze-avoidance and a thermostat.
Key dimensions & specs
- Thermostat, 3 heat and 2 fan settings
- Anti-freeze at 38°F
- Low profile, ultra quiet
Pros
- Anti-freeze setting turns on at 38°F
- Adjustable thermostat
- Three heat settings help load planning
- Low-profile body resists tipping
Cons
- Wattage is not stated on the listing
Best Fixed RV Install2 of 5
Suburban Wall Mount RV Electric Heater on Amazon (opens in a new tab)
Suburban Wall Mount RV Electric Heater makes the shortlist because states 11 amps and 1325 watts plainly.
Best for
- Permanent installs
Why it made the shortlist
The Suburban Wall Mount RV Electric Heater is 13 by 5 by 17 inches and under 5 inches thick, with an adjustable thermostat, variable heat and a 6-foot grounded cord for a 120V outlet. The listing gives its draw as 11 amps and 1325 watts.
Against Xtreme 750/1500W, it is a fixed install made for RVs.
Best for owners who want a permanent, slim heater and have the amp budget. Plan around 11 amps on a 30-amp service.
Key dimensions & specs
- 11 amps, 1325 watts
- 13 x 5 x 17 inch wall mount
- Adjustable thermostat
Pros
- States 11 amps and 1325 watts plainly
- Slim under 5 inches thick
- Adjustable thermostat and variable heat
- 6-foot grounded cord to a 120V outlet
Cons
- 11 amps is over a third of 30 amps
- Wall mounting takes more work
Best Dual-Wattage Portable3 of 5
Xtreme Heaters Portable Boat Cabin RV Space Heater with Tip-Over Shutoff on Amazon (opens in a new tab)
The strongest case for Xtreme Heaters Portable Boat Cabin RV Space Heater with Tip-Over Shutoff is 750W step eases a 30-amp load.
Best for
- Movable heater
Why it made the shortlist
The Xtreme Heaters portable heater is described for boats, cabins and RVs with 750 and 1500W settings and a top air intake that lets it sit against walls. It has a low profile, stable base and tip-over shutoff.
Best for a movable heater with a 750W low step.
Key dimensions & specs
- 750 and 1500W settings
- Top intake allows wall placement
- Tip-over shutoff
Pros
- 750W step eases a 30-amp load
- Can sit against walls
- Low stable base
- Tip-over shutoff
Cons
- No thermostat detail on the listing
Best Quiet Tower4 of 5
DREO Space Heater Large Room on Amazon (opens in a new tab)
DREO Space Heater Large Room is the better fit when quiet living areas.
Best for
- Quiet living areas
Why it made the shortlist
The DREO 30 inch tower uses a 308mm PTC element with 120 degree oscillation, five heat levels plus ECO and 3 fan levels, and a stated 25 dB noise level. The listing gives eight protections including V0 flame-retardant material and cool-touch housing.
Against Suburban Wall Mount, it is portable and quieter.
Best for a living area where noise matters.
Key dimensions & specs
- 30 inch tower, 120 degree oscillation
- 5 heat levels plus ECO
- 25 dB, eight protections
Pros
- Five heat levels plus ECO for load control
- 120 degree oscillation spreads heat
- Eight protections including V0 materials
- Stated 25 dB noise level
Cons
- Wattage not stated on the listing
Best Low-Load Supplement5 of 5
450W Space Heater on Amazon (opens in a new tab)
Choose 450W Space Heater for only 2.9 amps per the spec.
Best for
- Supplemental bedroom heat
Why it made the shortlist
The Minetom wall-outlet heater is listed at 350 watts and 2.9 amps at 120 volts, with a digital thermostat and a timer. The title says 450W, so the listing contradicts itself.
Against Xtreme 750/1500W, it draws about a fifth as much at 2.9 amps. It is a supplement for a bedroom, not a main heater.
Best as a low-load add-on alongside the air conditioner or other heaters.
Key dimensions & specs
- 350W, 2.9 amps per spec
- Digital thermostat, timer
- Wall-outlet plug-in
Pros
- Only 2.9 amps per the spec
- Digital thermostat and timer
- Plugs straight into an outlet
Cons
- Title and spec disagree on wattage
- Heats only a small area
How We Built This Shortlist
Each pick was assessed across 5 criteria weighted for real-world use.
- Amp and watt draw
- We compared stated amps and watts against a 30-amp, 120V service of about 3,600 watts.
- Wattage steps
- We noted low settings that coexist with other loads.
- Install type
- We separated portable plug-in units from a wall-mounted heater.
- Thermostat and anti-freeze
- We compared thermostat and freeze-avoidance features.
- Fit for RV service
- We kept only heaters that run from a standard 120V RV outlet.
What Matters Before You Choose a Space Heater For 30 Amp RV
Key buying criteria so you get the right fit the first time.
Amp budget
A 30-amp service at 120V is about 3,600 watts shared by every appliance. An 11-amp heater leaves 19 amps for the rest. Do the subtraction before you plug in.
Low wattage steps
A 750W step lets a heater run alongside a microwave or water heater element. Only 1500W forces you to turn something off. Look for the steps listed.
Plug and outlet
An RV outlet takes a normal 120V plug, so a heater should plug straight in without special wiring. A heater that needs a fixed circuit is not an RV appliance. Check the plug type on the listing.
Thermostat control
A thermostat cycles the heater and keeps the load intermittent, which helps a limited service. A plain dial can run continuously. Look for a thermostat range.
Freeze protection
A setting that keeps the cabin above 38°F can protect plumbing in a parked rig. It is only useful with shore power. Look for an anti-freeze mode.
Floor space and mounting
Wall-mounted units free the floor in a tight rig, while portables can be moved. Mounting needs a stud or a solid wall. Check dimensions and mounting needs.
Match a Space Heater For 30 Amp RV to Your RV
By Amp Budget
| Your situation | Recommended pick | Why |
|---|---|---|
| Under 3 amps spare | Minetom Wall Plug | 2.9 amps per spec. |
| Mid load with a 750W step | Xtreme 750/1500W | 750W and 1500W settings. |
| Known 11-amp load | Suburban Wall Mount | 11 amps and 1325 watts stated. |
| Thermostat and anti-freeze | Caframo True North | Anti-freeze at 38°F. |
| Quiet, many levels | DREO 30 Inch | Five heat levels plus ECO. |
Scroll sideways to see every column.
By Budget
| Budget | Recommended pick |
|---|---|
| $20 to $130 | Minetom Wall Plug or Caframo True North |
| $120 to $130 | Xtreme 750/1500W or DREO 30 Inch |
| $140 to $150 | Suburban Wall Mount |
Fixed Heater vs Portable
- Fixed
- Suburban Wall Mount is a slim wall unit with a stated 11 amps. It frees floor space and stays put.
- Portable
- Caframo True North, Xtreme 750/1500W and DREO 30 Inch move around and store away. They suit renters of space.
Most 30-amp owners should choose Caframo True North unless a permanent Suburban Wall Mount fits the wall.
By Use Pattern
| Pattern | Recommended pick |
|---|---|
| Stored winter RV | Caframo True North |
| Daily living use | Suburban Wall Mount |
| Quiet bedroom | DREO 30 Inch |
| Add-on warmth | Minetom Wall Plug |
For Full-Timers on a 30-Amp Pedestal Specifically
- Look for
- A known amp draw, a low step and a thermostat so the heater cycles, as the Caframo True North listing shows.
- In this comparison
- Suburban Wall Mount states 11 amps and Xtreme 750/1500W states a 750W step. Add each to your other loads.
When to Spend More
- Spend more if
- Spend more on Caframo True North or Suburban Wall Mount if you want freeze protection or a known-draw fixed install.
- Save if
- Save with Minetom Wall Plug or Xtreme 750/1500W if you only need supplemental warmth with a low load.
Before You Bring One Home
How many watts is a 30-amp RV service?
About 3,600 watts at 120V, shared by all appliances. A 1500W heater uses about 12.5 amps of that.
Can I use a hardwired or 240V garage heater in my RV?
No. A 30-amp RV service is 120V and about 3,600 watts, and those heaters need a different supply. Stick to plug-in units such as Xtreme 750/1500W or Caframo True North.
Is Suburban Wall Mount worth more than Xtreme 750/1500W?
If you want a permanent slim install with a stated 11-amp draw, yes. For a movable heater, Xtreme 750/1500W costs less.
How do I avoid tripping the breaker?
Add up your running loads, use a low heater step and avoid running the air conditioner and heater together. Watch the pedestal breaker.
Can I use a heater to protect plumbing in a parked RV?
Caframo True North lists an anti-freeze setting at 38°F. It only works with power, so check the connection often.
Bottom Line
Best overall: Caframo True North Heater. Low Profile — best overall for 30-amp rvs pick in this roundup. See the full verdicts above for every pick, with pros, cons and who each one suits.
Browse all space heater for 30 amp rv on Amazon — Prime-eligible options with current pricing.