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Fogatti Quiet LP Gas RV Furnace - InstaHeat Ultra Series - 12V DC - 35,000 BTU
Fogatti

Fogatti Quiet LP Gas RV Furnace - InstaHeat Ultra Series - 12V DC - 35,000 BTU

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$1,119.99
Retail:$1,259.99
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RV Furnace
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Waking up in a freezing RV is rough. From chilly mornings in the high desert to windstorms in the pines, this LP gas furnace brings real heat to your rig. Its low-noise operation and smart controls turn your RV into a refuge, not just a shelter. Great Prices for the best rv furnace from Fogatti. Fogatti Quiet LP Gas RV Furnace - InstaHeat Ultra Series - 12V DC - 35,000 BTU part number FG55FR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Fogatti RV Furnace

  • 35000 Btu
  • Fogatti
  • Doorless
  • 5th Wheel
  • Motorhome
  • Travel Trailer
  • 22W x 8T x 18D Inch

Waking up in a freezing RV is rough. From chilly mornings in the high desert to windstorms in the pines, this LP gas furnace brings real heat to your rig. Its low-noise operation and smart controls turn your RV into a refuge, not just a shelter.


Highlights

  • Choose From Different Heat Modes: Turbo, standard, or sleep mode with precision-stage burners.
  • Heats Evenly: The direct drive fan circulates 260 CFM of warm air in your camper, heating up any cold pockets.
  • Quiet Enough to Sleep Through: Runs as low as 40 dB, so it won't sound like it's training for takeoff.
  • Safety Comes Standard: LP gas system includes smart ignition and anti-explosion tech to help protect your rig.
  • Simple Wired Controller: Mounts on the wall, giving you easy access to a clear, direct interface.
  • Full Install Kit: Includes controller, vent cap, intake and exhaust tubes, and mounting gear.

Features to know about

Cold Weather Isn't the End of the Road

The last time you woke up and saw your breath in your camper, you swore that was the last straw. Maybe it was the frost on the windows. Maybe it was trying to make coffee in gloves. Whatever your moment was, you knew you were done freezing in your rig. That's exactly what this furnace was built to fix. With 35,000 BTUs and three heating modes, it responds fast and adapts to the kind of cold you're actually in. Turbo mode heats quickly, standard keeps things steady, and sleep mode runs whisper quiet at just 40 dB. That's low enough to stay warm without sounding like a jet engine in the middle of the night.

All-In-One Installation Kit

This isn't a project that takes over your weekend. The InstaHeat Ultra is designed to fit right in, with a wired controller you can mount wherever works best for you. It's made for tight quarters, with a secure ignition procedure and built-in protections that keep a low profile and do their job without getting in your way. Once you get it all installed, this furnace lets you keep rollin' long after everyone else has packed it in for the season.

Specs

Performance:

  • Heating output: 35,000 Btus max; adjustable levels: 17K, 25K, 30K, 35K
  • Airflow: 260 CFM
  • Heating modes: Turbo, Standard, Sleep

Power and Electrical:

  • Power supply: 12V DC
  • Current draw: 10 amps
  • Power consumption: 120 watts
  • Fuel: LP gas; gas inlet: 5/8" UNF

Controls & Modes

  • Modes: quick, standard, sleep
  • Thermostat accuracy: ±3F
  • Diagnostics: fault alerts and 8 diagnostic functions
  • Wind sensor ensures consistent heating: 15-year lifespan
  • Ignition: secure procedure with triple anti-explosion safety

Noise Level

  • Sleep mode: 40 dB

Installation:

  • Return air requirement:
    • 80 square inches
  • Included components:
    • Vent cap
    • Air intake and exhaust tubes
    • Mounting brackets and base
    • Wired controller
    • Full hardware kit

Warranty:

  • 1-Year limited


RF035A0N Fogatti RV Furnace InstaHeat Ultra with Smart Wired Controller - Fogatti 35,000 BTU Quiet LP Gas RV Furnace, Smart Triple Explosion-Proof, InstaHeat Ultra Series - 35000 BTU

Item # FG55FR

Installation Details FG55FR Installation instructions


California residents: click here


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See what our Experts say about this Fogatti RV Furnace

  • Replacement for a SF-30F Suburban Furnace
    Hey Carl, thanks for the information! The Fogatti Quiet LP Gas RV Furnace item # FG55FR would be a great replacement option for your SF-30F Suburban furnace. It measures 18" deep x 8" tall x 22" wide so it's pretty close size wise. I took a look at the installation instructions for your furnace and the ventilation set up is almost identical. The Fogatti item # FG55FR is a 35,000 BTU furnace. It has four adjustable power levels and three heating modes. I do not have a 90° 5/8" UNF male...
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  • Would Suburban RV Furnace Door Work On Fogatti Unit?
    Hello Arthur, thanks for reaching out. Typically the furnace covers and brand and model specific. For example, the Fogatti RV Furnace doors like part # FG95FR is made specifically for the Fogatti water heater model # FG55FR. There is a chance the Suburban door would work on a Fogatti unit, but this is not something we have specifically tested. What I can tell you is the Fogatti door is 20-5/8" wide x 10-1/2" tall overall. So as long as the suburban door is the same size and has the same...
    view full answer...
  • Do Fogatti Quiet RV Furnaces Use Much 12V Power When Off Grid Camping?
    Hey Kevin, the Fogatti furnaces only pull noticeable 12V power when the blower motor and igniter are running. On average, you’re looking at about 7–8 amps while it’s firing and pushing heat. When it’s idle, the wired controller/thermostat draws a very small trickle - so little it won’t put a dent in your battery bank much at all. Where folks get surprised is if they’re boondocking in freezing temps: the furnace will cycle on and off through the night, and that steady blower draw can add...
    view full answer...
  • Which Fogatti Rv Furnace Is Easy To Install In Place Of Old Atwood DFMD35121 In Keystone Cougar?
    Harvey, your old DFMD35121 was part of Atwood’s 35k BTU line, so the Fogatti furnaces are right in that same output range. Dimensionally, they’re close enough that the install should be straightforward, with only minor trim adjustments depending on your cutout. If your current furnace has no door, go with # FG55FR. This will use the same vent layout so no worries there. If it has a black door, choose # FG45FR if it has a white one, go with # FG65FR. Do you still have the original door...
    view full answer...
  • Can I Use Fogatti RV Furnace To Run To Multiple Vents In Toy Hauler Garage And Bedroom?
    Yes, Mark, the Fogatti Quiet furnaces (no service door on RV # FG55FR, white service door # FG65FR, black service door # FG45FR) have multiple duct knockouts so you can run lines to different zones. Just be sure to size your ducting properly so you’re not starving one room while blasting another. Do you plan to run three or more ducts, or just a simple front-and-rear setup? You can find adapters online or at local RV and sometimes hardware stores (we don't carry them but check out the...
    view full answer...
  • Does Fogatti RV Furnace FG55FR Have Vent Knockouts On The Bottom To Go Through Floor?
    Michael, the Fogatti # FG55FR is designed with top and side venting, but not a direct floor knockout like your 8535 had. That said, many customers adapt it with duct rerouting, especially since Fogatti offers multiple duct connections. If preserving the floor feed is critical, you may need to either patch and reroute or consider a Dometic model with a bottom knockout like # DMC74MR Are you hoping to keep the exact duct pattern, or is some modification okay? That’ll determine whether the...
    view full answer...
  • RV Fogatti Furnace For 28' Cougar Camper In Freezing Temperatures In Montana
    Cheryl, the 35,000 BTU output of the # FG55FR is designed for exactly that. In a 28-footer, it should keep things toasty even in single-digit nights, provided your insulation is decent. The variable fan speeds help it maintain comfort without short-cycling. One tip: make sure your ductwork is sealed up and your return air isn’t blocked in any way shape or form - those two things make a big difference in cold-weather performance. Do you usually camp with shore power available, or do you...
    view full answer...
  • Does Fogatti RV Furnace Come With Thermostat And Controller? Can It Be Used With RV Thermostat?
    Alan, the Fogatti furnaces actually ship with their own wired digital controller that doubles as the thermostat. It lets you set temperature, switch between heating modes (turbo, sleep, normal), and even monitor BTU output right from the wall panel. If you’d prefer to keep or install a different thermostat, Fogatti built in a blue-wire connection point for that, but you should only use one thermostat at a time. Their instructions recommend contacting Fogatti first if you go that route,...
    view full answer...
  • What Is The Difference Between Fogatti FG55FR Quiet RV Furnace And Older Atwood Or Dometic Furnaces?
    Susan, that’s one of the big perks of the Fogatti line, which includes # FG55FR. Compared to older single-speed Atwood and Dometic units, the Fogatti runs quieter thanks to its variable fan speeds and insulated housing. It’s not “silent,” but the drone you’re used to when the furnace kicks on is much more muted. Many folks say they sleep better because it cycles smoother. Also, Fogatti is one of the only furnaces that include a thermostat and controller wired for the wall so you can control...
    view full answer...
  • Can Fogatti RV Furnace Run Safely While Traveling On The Road?
    Teresa, just like Dometic and Suburban furnaces, the Fogatti units # FG55FR, # FG45FR, # FG65FR are designed to run when the RV is parked, not while driving. The propane supply and ignition systems aren’t meant to stay lit on the highway. So you really don't have any option to heat the RV/travel trailer when on the road, unless it's a motorhome with built-in heater that runs off the engine. Do you do much winter traveling on the move, or is this mainly for overnight heating? The Fogatti...
    view full answer...
  • Can Fogatti FG45FR GF65FR Quiet RV Furnaces Be Installed Horizontally Under Dinette Bench?
    Tony, good question, these furnaces are designed for horizontal installs, which is how most RVs use them under benches, beds, or cabinets. The key is to maintain the required clearances for ventilation and make sure the ducting and propane line are routed cleanly. Mounting vertically is generally not recommended since it can interfere with airflow. Do you already have ducts in that bench area, or are you planning to cut new runs? That’ll guide how straightforward the install will be....
    view full answer...
  • Replacing Furnace In 1992 Cobar 5th Wheel With Suburban SF-30F Rv Furnace
    Carl, you’re on the right track. The Fogatti Quiet Furnace # FG55FR is a solid replacement for your SF-30F. The dimensions are pretty close - 18 inch deep x 8 inch tall x 22 inch wide versus your Suburban’s 20.25” x 7.6” x 17.75”. You’ll likely need to adjust the cutout slightly, but the ventilation layout is nearly identical as this is pretty standard, so it won’t be a major headache. The Fogatti runs at 35,000 BTUs, with multiple heating modes to give you flexibility on milder days. Did...
    view full answer...
  • Different Color Door Options For Fogatti Quiet Furnace For Keystone Travel Trailer
    Dave, the # FG65FR comes with the white exterior access door. If you’d rather have a black door, you’d go with the # FG45FR. And if you don’t want a door at all - say your RV has a vent cover but you actually service the rv through a cabinet door inside the rv - you’d go with the doorless # FG55FR. Functionally, they’re the same furnace, so the decision comes down to which matches your trailer’s exterior. Let me know what your setup is currently like!
    view full answer...

Do you have a question about this RV Furnace?


Info for this part was:

Employee Dustin K
Video Edited:
Dustin K
Employee Steven C
Installed by:
Steven C
Employee Daron K
Updated by:
Daron K
Employee Kara L
Edited by:
Kara L
Employee Lincoln B
Written by:
Lincoln B

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