Start with the troubleshooting answers below. If you are still stuck, reach out to our team in Fort Collins and we'll work through it with you. Call (970) 578-0791 (Monday through Friday, 8 AM to 5 PM) or email support@mountaintimecampers.com.

Include your name, email, and phone number, your heater model, a short description of what is happening, and these photos of your installation:

• White sticker on the end of the unit
• Combustion intake pipe (complete routing)
• Combustion exhaust pipe (complete routing)
• Propane regulator (remove the plastic cover for the photo if installed)
• Heater unit itself
• Fuel line and fittings
• Large heated-air ducting from the heater to the vents

Photos help our tech team spot things that are hard to describe, so we can get you back to warm faster.

Every Propex heater we carry is right here on our site. Each product page walks you through who it fits, what's in the kit, and the install docs.

• HS2000 interior heater (6,500 BTU)
• HS2800 interior heater (9,500 BTU)
• HS2211 exterior / underfloor heater (6,500 BTU)
• PS2000 Slimline portable heater (our newest portable)
• PS2000 Portable Heater System (original suitcase)
• High Altitude Modification service (HS series)
• 5-year extended warranty

You can also browse everything in our Propex heater collection. Need a part you don't see? Give us a call and we'll help you track it down.

If your heater needs a repair that isn't covered by warranty, we can walk you through the Propex Non-Warranty Repair Agreement.

Non-warranty repairs may apply when a heater is outside its warranty period, or when the issue isn't covered under warranty.

Before sending a heater in, please contact us at (970) 578-0791 or support@mountaintimecampers.com so we can figure out the right next step together.

Include your Propex model and a description of the issue. Photos of the heater, installation, wiring, and any fault-code lights help us a lot.

If you regularly camp above about 7,500 ft, it's worth it. For the HS2000, HS2800, and HS2211, choose the High Altitude option when you order, or add our High Altitude Modification service to a heater you already own.

The PS2000 Slimline and PS2000 suitcase already ship high-altitude modified, so there's nothing extra to add.

Standard warranty coverage from purchase:

• HS2000: 1 year
• HS2800: 1 year
• HS2211: 3 years (it lives under the vehicle and is built to handle dirt and weather)
• PS2000 Slimline Portable Heater System: 1 year
• PS2000 Suitcase Portable Heater System: 1 year

Want more peace of mind? We offer an optional 5-year extended warranty for Propex heaters purchased from Mountain Time Campers. It's a one-time fee.

You can add the extended warranty with your heater, or later, as long as the heater was bought directly from Mountain Time Campers and the original order is within one year of when you buy the coverage. If you add it later, you'll need to be the original purchaser and provide your original Mountain Time Campers invoice.

The extended warranty covers manufacturing defects of the Propex heater and the original thermostat sold with it. It does not cover accessories, or damage from misuse, improper installation, accidents, exposure to dust or moisture, improper wiring, normal wear and tear, or damage during travel.

Any repair attempt or work on the heater by anyone other than Mountain Time Campers will void the warranty. That includes removing the top case from the heater.

A big perk of our extended warranty: bench time for repairs is covered at 100%, no matter the issue. That includes time to test-run the heater on the bench or do a clean-out if needed. Replacement parts not covered under the warranty terms are still the customer's responsibility.

Shipping to and from Mountain Time Campers is the customer's responsibility. Warranty coverage is non-transferable and non-refundable.

Before sending a heater in for warranty service, please email support@mountaintimecampers.com or call (970) 578-0791 so we can send you the right next steps.

Yes, as long as the combustion intake, exhaust, heated-air ducting, and propane connections can all be routed correctly.

Mount the heater securely, in a spot where every connection can be made without restrictions or unsafe routing.

Pay special attention to the combustion intake and exhaust. These pipes must stay separate from the cabin air system and follow the Propex installation requirements.

Not sure your spot will work? Send us photos and measurements of the location along with your heater model, and we'll help you sort it out.

Yes. Propex offers a way to extend the thermostat harness when the standard length won't reach your mounting spot.

Make sure every thermostat wiring connection is secure and protected from moisture and corrosion. If you need help picking the right harness or extension, send us your Propex model and a photo of your current thermostat connection.

The Propex digital thermostat can show temperature in either Fahrenheit or Celsius.

Use the thermostat's temperature-setting controls to open the display setting and switch between °F and °C.

If you're not sure which thermostat version you have, send us a photo and we'll help.

This applies to interior-mounted HS2000 and HS2800 heaters. Thick, insulated floors need a little extra planning when routing the combustion pipes through the floor.

The combustion intake and exhaust connections are on the bottom of the heater. With a thick or insulated floor, the pipes may need to travel down through the flooring before turning toward the side of the vehicle.

Protect the combustion exhaust pipe where it passes through insulated flooring. Propex offers an insulated heat sleeve for this. It keeps the exhaust heat away from your insulation and flooring.

You may need to make the floor opening slightly larger to fit the heat sleeve. Seal the gap between the sleeve and the floor with a high-temperature gasket maker.

Since the flooring can hide the hose clamps that connect the combustion pipes to the heater, attach the pipes to the heater outlet stubs before mounting the heater. Otherwise you may have to remove the heater and pipes together for future service.

As with any Propex install, use a high-temperature RTV gasket maker at the ends of the combustion exhaust silicone connector and where the pipe exits the vehicle floor.

• Never trim the pipes. Trimming upsets the combustion balance and causes malfunction or early failure.
• The exhaust pipe needs a constant downward slope so condensation drains out instead of restricting airflow.
• Keep the intake and exhaust ends at least 0.5 meters (1.5 ft) apart so exhaust isn't pulled back into the intake.
• The exhaust must end past the outside edge of the vehicle and face toward the rear. Carbon monoxide is heavier than air and can pool under the vehicle, so poor routing risks CO coming in through the floor. We strongly recommend a CO detector.

Minimum required pipe length: 1 meter (about 40 inches)

The combustion intake and exhaust pipes are key to safe, proper heater operation. Route them carefully and keep them protected from damage, restrictions, and debris.

Do not shorten the combustion pipes. If you truly need more length, the pipes can be extended within the limits Propex specifies. Avoid unnecessary bends and secure the pipes so they can't move or get damaged.

Give the exhaust a slight downward slope so condensation drains away instead of collecting and restricting airflow.

Keep the intake and exhaust ends separated as required, and keep both clear of dirt, debris, and insects.

Propex combustion pipe end caps help keep bugs and debris out while the heater is off. Every so often, pull the caps, check the pipes for blockages, and put the caps back on.

If you suspect a blocked or damaged pipe, fix it before running the heater again. Unsure about your routing? Send us photos of the full intake and exhaust routing and we'll take a look.

The ignitor gap can affect ignition on the HS2211. This procedure is for the HS2211 only.

Remove the screws holding the ignitor and carefully pull it out. Clean the ignitor tips if needed, then check the gap between them.

The gap should be 2 to 3 mm. Adjust carefully if needed, then reinstall the ignitor and screws.

After reassembly, check the propane connections for leaks with soapy water before running the heater.

If you're not comfortable with this, we recommend having a qualified technician handle it, or give us a call.

Install hot air outlets at floor level. Heat rises, so floor-level outlets give you the most even, efficient warmth.

• Maximum 3 hot air outlets per heater
• Maximum length to the first outlet: 1.5 meters (4.5 ft)
• Total combined cabin ducting must not exceed 5 meters (15 ft)

The Propex Stealth Kit makes the HS2000 even quieter by reducing sound from the combustion intake and exhaust.

The kit includes intake and exhaust mufflers, acoustic ducting, and silicone connectors.

The HS2000 is already a quiet heater, but the Stealth Kit is a nice upgrade when you want it extra hushed.

Adding it to an existing HS2000? Make sure the parts are installed to the Propex routing requirements for the combustion intake and exhaust.

Good wiring connections are key to reliable heat. Protect the connectors from moisture and corrosion, especially where condensation is likely.

Before connecting, apply a small amount of dielectric grease to the female side of the connector. It protects against corrosion while still letting the connector seat properly.

Make sure connectors are fully seated and the wiring is secured so it can't be pulled, pinched, or damaged.

Troubleshooting an electrical issue? Check the wiring connections and 12V power supply before assuming the heater itself has failed.

If your propane system uses a single-stage regulator, replace it with a two-stage regulator. A two-stage regulator holds more consistent pressure as elevation changes. Use an 11" water column regulator for efficient gas flow.

Note: A faulty regulator is one of the most common causes of Propex issues we see.

⚠️ Important: The compression fitting supplied with the heater is BSPT thread, which is NOT the same as standard US 1/4" NPT. Do not substitute US NPT fittings or you will have a gas leak.

Alternate BSPT fittings can be sourced from McMaster-Carr, or give us a call and we'll help you find the right one.

Use 1/4" copper tubing to run propane from the tank to the heater. The Propex compression fitting is designed to work directly with 1/4" OD copper tubing.

Need help planning your fuel line or sourcing parts? Call (970) 578-0791 or email support@mountaintimecampers.com.

If your Propex fan starts and stops in roughly one-second bursts no matter the thermostat setting, we've seen this happen when the heater was started with a low battery.

The fan begins its normal pre-combustion purge but doesn't have enough battery charge to finish the cycle.

First, disconnect 12V power to the heater by pulling the inline fuse. Charge the battery, reconnect 12V power, and do a fault-code reset before starting the heater again.

If it keeps happening, disconnect 12V power again and leave the heater disconnected for 24 hours. Then reconnect, do a fault-code reset, and try again.

There's also a more advanced capacitive-discharge procedure that involves removing the main circuit board and leaving it disconnected for 24 to 48 hours. Only try this if you're comfortable working with electronics.

If a full capacitive discharge doesn't fix it, the main circuit board may need replacing. We offer heater service for board replacement, so just reach out.

Propex heaters have an onboard 2A slow-blow fuse that protects the heater's electrical system.

Before working on the fuse or disconnecting the thermostat, disconnect the heater from 12V power.

On the HS2000 and HS2800, the fuse is behind the electrical access panel. On the HS2211, it's reached through the end cap.

If you suspect the fuse has failed, remove it and check it for continuity. Replace it only with the correct 2A slow-blow fuse.

Before reconnecting 12V power, make sure the thermostat is connected to the heater. Thermostat first, then power.

If the new fuse blows again, there may be an underlying electrical issue that needs diagnosing before you run the heater again. Give us a call and we'll help.