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Jayco Comet vs Thor Rize 18M
Jayco Comet vs. Thor Rize 18M: Which Compact Class B Camper Van Should You Buy?
An 18-foot camper van parks in a grocery store lot, slips into tiny forest campsites and still gives you a bed, a galley and a bathroom. The Jayco Comet 18C and the Thor Motor Coach Rize 18M are built on the same size gas van, with the same 17-foot-10-inch length and 8,550-pound GVWR, so the difference is inside. For most couples, the Comet is the better van: it sleeps two, doubles the inverter output, adds a larger air conditioner and uses hydronic heat. The Rize 18M answers with standard solar, a two-burner propane cooktop and a little more headroom.
Choose the Jayco Comet if you:
- Travel as a couple and need sleeping for two
- Run a coffee maker or hair dryer off the battery and want a 2,000W inverter
- Want hydronic heat and a 13,500 BTU A/C for cold mornings and warm afternoons
- Want a long list of driver-assist features on the van chassis
Choose the Thor Rize 18M if you:
- Travel solo and want solar charging included from the factory
- Prefer cooking on a two-burner propane cooktop
- Want 6 feet 3 inches of interior headroom
Jayco Comet vs. Thor Rize 18M at a glance: the specs that decide it
Because both vans share the same length, weight rating and 3.6-liter, 276-horsepower V6 platform, the deciding specs are all in the camper build. These are Jayco's 2026 Comet 18C figures and Thor Motor Coach's current published Rize 18M figures.
| Spec | 2026 Jayco Comet 18C | Thor Rize 18M | What it means for you |
|---|---|---|---|
| Sleeps | Up to 2 | 1 | The Comet is the van for two |
| Inverter | 2,000W | 1,000W | The Comet runs bigger appliances off-grid |
| Air conditioner | 13,500 BTU | 11,000 BTU | The Comet cools a hot van faster |
| Heat and hot water | Hydronic system | Combination propane furnace and water heater | Both heat well; hydronic heat is quiet and even |
| Solar | Prep standard; 200W panel optional | 200W panel standard | The Rize charges from the sun out of the box |
| Height / headroom | 9 ft 3 in / 6 ft 2 in | 9 ft 6 in / 6 ft 3 in | The Comet is lower outside; the Rize is taller inside |
| Cooking | Portable induction cooktop | 2-burner propane cooktop | Pick by how you like to cook |
Which camper van has better power and climate: the Jayco Comet or the Thor Rize 18M?
The Comet, on the numbers both brands publish. Jayco pairs two 12V AGM house batteries with a 2,000W inverter and a 2,800W gas generator, while Thor Motor Coach lists two 100Ah AGM batteries, a 1,000W inverter and a 2.8 kW gas generator for the Rize 18M. The extra inverter output is the difference between running a small coffee maker on battery or starting the generator.
- Cooling: A 13,500 BTU A/C in the Comet's mandatory Customer Value Package against an 11,000 BTU unit in the Rize 18M.
- Heat: Jayco includes a hydronic water and heating system; the Rize uses a combination propane furnace and water heater.
- Solar: This is where the Rize wins. Thor includes a 200W solar system with an exterior port, while Jayco offers a 200W panel with a dual controller as an option on the 2026 Comet.
Source: Jayco 2026 and Thor Motor Coach current published specifications, checked October 2026.
Jayco Comet vs. Rize 18M sleeping and space: which fits two people better?
For two travelers, the Comet is the clear choice. Jayco lists the 2026 Comet 18C as sleeping up to two with seatbelts for four, using its convertible sofa layout. Thor Motor Coach lists the Rize 18M as sleeping one, with a pull-out sleeping area and seatbelts for four.
Both vans carry a rear wet bath with a cassette toilet and shower, and both have heated holding tanks. The Comet's tanks run slightly larger at 21 gallons of fresh and 24 of gray, against 20 and 20 for the Rize.
Source: Jayco 2026 and Thor Motor Coach current published specifications, checked October 2026.
What is it like to drive and live with the Comet 18C or the Rize 18M?
Behind the wheel they're the same size van with the same engine, a 3.6-liter V6 with 276 horsepower and a 9-speed automatic, so day-to-day driving feels alike. At 17 feet 10 inches long, both fit in a standard parking space length and most campground loops.
Living with the Comet 18C:
- A 3 cubic foot refrigerator/freezer, microwave and stainless sink
- A wet bath with a flip-down sink, wardrobe, magnetic shower curtain and a water-saving shower system
- Driver aids Jayco lists on the chassis, including blind spot monitoring with rear cross-path detection, lane keep assist, forward collision warning with active braking, crosswind assist and drowsy driver detection
Living with the Rize 18M:
- A 7-inch touchscreen control system, a 10-foot power awning with LED lighting and a 12V refrigerator
- A 2-burner propane cooktop with glass cover and a microwave
- Lane keeping, blind spot assist and attention assist, per Thor Motor Coach's listing
Walkthrough tip: Make up the bed in each van at the dealership. Converting a sofa or pull-out every night is the routine you'll repeat most.
Which costs less to own: the Comet or the Rize 18M?
Running costs should be nearly identical, because both use the same gas V6 platform and the same 24-gallon tank. The Comet sits 3 inches lower, which helps a little with wind, but the bigger difference is how you camp.
- Fuel use: Expect similar fuel economy from the same engine and weight rating.
- Generator use: The Rize's standard solar can cut generator time; the Comet's bigger inverter reduces the need to start the generator for small appliances.
- Maintenance: Both follow the chassis maker's service schedule; check each owner's manual for coach systems.
For pricing on either van and the coverage terms each manufacturer offers, compare current details with the dealership.
Jayco Comet and Thor Rize recalls: how to check a camper van
Camper van recalls can come from either the coach builder or the chassis maker, so check both. Run the exact van's VIN through NHTSA's recall lookup before you sign, and ask the dealership to confirm that any open campaign has been completed. Recall repairs are done at no charge.
Traveling from Kent, WA in a Comet or Rize: national park sites and winter passes
From Kent, a compact Class B opens up places bigger RVs can't go, and both of these vans qualify. Their size and weight fit inside limits that shut out larger motorhomes.
Mount Rainier campgrounds. Cougar Rock Campground lists a 35-foot limit for motorhomes. Both vans fit with room to spare at under 18 feet, which also makes tighter forest-road pullouts far easier than in a larger coach.
Winter passes. Washington's rule requiring vehicles over 10,000 pounds to carry chains from November 1 to April 1 on routes like I-90 between North Bend and Ellensburg doesn't reach either van at an 8,550-pound GVWR. Posted chain requirements for all vehicles still apply when conditions call for them, so check pass conditions before a winter trip.
Buying a Comet in Kent: what comes with it at Valley RV Supercenter
The camper van is only part of the decision; where you buy it decides who preps it, who shows you how it works and who looks after it when something needs attention mid-season. Valley RV Supercenter sells and services Jayco RVs, including Class B camper vans from one location in Kent, so the Comet you buy and the shop that maintains it are in the same building.
Every new or pre-owned RV sold here comes with the Valley Promise Package, which includes:
- A full pre-delivery inspection: all systems prepped to factory specifications, a thorough appliance check, a new battery, filled propane tanks and a complete detail
- A new RV orientation: a walkthrough of the camper van's systems before it leaves the lot
- VIP priority service: preferred scheduling and access to the dealership's Express Technicians
- Protection extras: tire road hazard and wheel protection, LoJack, Fresh Start interior and exterior protection, and a complimentary campground membership
Valley RV Supercenter trains its technicians through the RV Technical Institute path, from Level 1 up to Level 4 Master Technician, and handles winterization and de-winterization, roof seals, slide-out maintenance and diagnostics on site, with parts and RV collision repair under the same roof. For a camper van that doubles as a daily driver, having coach systems serviced close to home is a real advantage. Details and conditions of each package item are on the Valley Promise Package page.
Comet or Rize 18M: which one should you buy?
For most couples in the Kent area, the Jayco Comet 18C is the stronger choice. It sleeps two, doubles the inverter output, cools with a larger A/C and heats with a hydronic system, all on the same van as the Rize. The Thor Motor Coach Rize 18M is the better pick for a solo traveler who wants standard solar, a propane cooktop and a touch more headroom.
Drive both on the same afternoon and make up the bed in each. Valley RV Supercenter is at 619 Washington Ave N, Kent, WA 98032, and you can reach the team at (253) 737-2090. Shoppers from Auburn, Renton, Federal Way and across the Puget Sound area can browse the full Jayco lineup before making the drive.
Ready to drive a Comet in Kent?
See Comet Camper Vans in StockFrequently asked questions about the Jayco Comet and Thor Rize 18M
Does the Thor Rize 18M come with solar?
Yes. Thor Motor Coach lists a 200W solar system with a charge controller and an exterior solar port on the Rize 18M. On the 2026 Jayco Comet 18C, solar prep is standard and a 200W panel is an option, so the Rize has the edge if solar matters most.
How many people can sleep in the Jayco Comet 18C?
Jayco lists the 2026 Comet 18C as sleeping up to two, with seatbelts for four while traveling. Thor Motor Coach lists the Rize 18M as sleeping one.
Will a Comet or Rize fit at Mount Rainier campgrounds near Kent?
Yes. Both vans are under 18 feet, well inside the 35-foot motorhome limit at Cougar Rock Campground. Summer weekends book up, so reserve ahead.
Do I need chains for a Class B camper van on Snoqualmie Pass?
The winter carry rule for vehicles over 10,000 pounds doesn't apply at the Comet's 8,550-pound GVWR. If chains are posted for all vehicles, though, every vehicle must follow it, so check conditions before you go.
Can Valley RV Supercenter service a Comet camper van?
Yes. The service department in Kent handles coach systems, winterization and diagnostics, and buyers get priority scheduling through the Valley Promise Package.
Figures from the manufacturers' published specifications, checked October 2026.