Many RV owners underestimate just how involved the process can be when replacing the appliances in their camper. While it’s true that manufacturers have come a long way in streamlining their product installations, swapping out a major appliance is not always as simple as unplugging the old and plugging in the new.
From figuring out if you’ll need a buddy with a socket set (or a chiropractor after lifting that rooftop A/C unit) to knowing when it’s time to throw in the towel and call in a pro, this guide will help set realistic expectations for a stress-free upgrade. We’ll break down what to expect with the three most common swaps—furnaces, stoves/cooktops, and A/C units—so you can budget, prepare, and decide if DIY is right for you.
RV Furnace Replacement
An RV furnace is one of those appliances you rarely think about until it quits, usually on the coldest night of your trip. While furnace repair is much more common than replacement, sometimes the unit just has to go. A DIY swap is definitely doable, but there are some logistical challenges you’ll want to know upfront.
Furnaces are typically crammed into tight compartments with minimal clearance. Getting the old unit out can be a pain, as can maneuvering the new one into place and properly aligning it with the ducts and the exterior vent. Additionally, most furnaces run on propane and 12V power, so you’re dealing with both a live gas connection and an electrical wiring setup—two different systems that require patience and care to hook up accurately and safely. Lastly, once the unit is installed, it needs to be sealed properly to prevent dangerous exhaust gases from leaking inside.
Average Cost Range: Expect to pay $800–$1,600 for the furnace itself, plus $400–$1,000 for labor if you hire a pro. Simple swaps land on the lower end, while ducting or vent adjustments push costs higher. If your RV has an older thermostat, you may also need to factor in upgrade costs for compatibility.
Labor Expectations: DIYers should budget a half- to full day. Removal isn’t too bad, but sealing and aligning the new furnace takes time. Pros can often finish in 2–4 hours.
Safety Considerations: This is an installation where you can’t cut corners—propane leaks and carbon monoxide risks make testing (and retesting) connections critical, along with proper vent alignment and checking your CO detector afterward. Disconnect batteries and shore power first to avoid electrical shock, and mind your ergonomics; furnaces aren’t terribly heavy, but the awkward angles can still cause strain if you rush.
Necessary Tools: Basic hand tools, propane-rated fittings and sealant or tape, a multimeter, and propane leak-test solution are must-haves. A flashlight or headlamp is a useful addition.
DIY or Pro? If you’re replacing the same make/model and have easy access, DIY is reasonable. However, if you’re switching brands, modifying ductwork, or just feeling unsure about propane, it’s better to hire a pro.
If you’re tackling this yourself, these tips will save you headaches and make sure your install is safe and solid:
- Take detailed measurements and compare vent and duct layouts before ordering—even units with the same BTU rating can differ in size and configuration.
- Always check connections with a leak-detection solution, not just your nose.
- Take a photo of your current wiring setup before disconnecting anything, and check compatibility between your furnace and thermostat.
- Use the manufacturer-recommended gasket or sealant around the exterior vent and inspect duct connections for gaps.
Stove & Cooktop Replacement
At first glance, replacing a stove or cooktop looks easy—certainly less of a challenge than the furnace, right? Eh…not always.
Many RV kitchens are compact, meaning stoves and cooktops must fit into snug cutouts. Removing the old unit and sliding in the new one can be tricky, especially if the countertop or surrounding cabinetry limits access (or if a “standard” size unit ends up slightly wider than the old appliance). Upgrading from a cooktop to a full range adds even more complexity, requiring extra clearance and proper ventilation. Additionally, like RV furnaces, most stoves and cooktops run on two systems: propane for fuel and electricity for igniters, lights, or vent fans. Connecting the gas line safely is critical, as any leak could be dangerous. Wiring is usually straightforward, but color codes can differ between models or manufacturers, and older wiring may require repair or adaptation.
Average Cost Range: Expect to pay $200–$600 for a cooktop, or $500–$1,200 for a full range. Professional installation typically adds $200–$500 if cabinet modifications or propane rerouting are needed.
Labor Expectations: DIYers can usually complete a straightforward cooktop swap in 2–3 hours, though cabinet adjustments, rerouting propane, or repairing old wiring will add time. Professionals often finish in just a couple of hours, depending on access and complexity.
Safety Considerations: Propane connections must be secure to avoid leaks, and good ventilation is key since these appliances consume oxygen while in use. Keep flammable materials away from the unit, and double-check that any vent hood is working properly.
Necessary Tools: Basic hand tools, propane-rated fittings and sealant or tape, a multimeter, and propane leak-test solution are must-haves. A jigsaw or oscillating tool is helpful if cabinetry needs adjustment.
DIY or Pro? Cooktops are generally DIY-friendly. Full ranges, or anything requiring cabinet cuts and propane rerouting, are better left to pros.
If you’re committed to going the DIY route, these tips will help you ensure a proper install:
- Carefully measure the cutout and clearance, and confirm ventilation requirements before purchasing.
- Always use propane-rated fittings and thread sealant, and test connections with soapy water before turning on the burner
- Take a photo of the original wiring before disconnecting anything.
- Inspect the countertop cutout and replace or adjust any gaskets, making sure the unit sits level to avoid cooking hazards
RV Air Conditioner Replacement
Few failures ruin a summer trip faster than a dead A/C. Luckily, replacement is fairly straightforward—if you can handle the heavy lifting.
The biggest challenge is weight. Rooftop units run 70–100 pounds and are awkward to maneuver, so getting one up a ladder isn’t easy. In other words, this is a “Phone a Friend” job. You also may want to consider rigging a rope-and-pulley system to further minimize risk. Another key consideration is fitment. Most units are designed for a standard 14" x 14" roof opening, but older rigs or previous modifications can throw those dimensions off by a fraction. Since sealing is important to prevent leaks, even slight misalignment can cause headaches. Brand loyalty can pay off here, as you’re unlikely to need an adapter kit for a clean install and wiring.
Remember that an RV A/C is a system, not just a box on the roof. In addition to the rooftop unit, you’ll need a ceiling assembly and possibly a wall thermostat or digital controller. Check out our RV A/C buying guide for tips on picking the right system.
Average Cost Range: New rooftop units can run anywhere between $600–$2,500, depending on BTU rating, energy efficiency, smart features, and whether the system is ducted or non-ducted. Professional installation typically adds $300–$700.
Labor Expectations: DIYers should plan on 3–6 hours, as removing the old unit, cleaning the opening, and lowering the new one into place takes patience. A pro can usually knock it out in 2–3 hours.
Safety Considerations: While you’ll want to be mindful of electrical risks by disconnecting shore power and batteries, the real danger here is lifting. These units are heavy, the roof is high, and the angles are awkward. Wear shoes with good grip, work on a dry day, and don’t rush. Dropping a unit can cause serious damage (and injury).
Necessary Tools: Basic hand tools, a torque wrench, putty knife, RV roof sealant or tape, and very sturdy extension ladder are all must-haves. You should also factor in at least one helper for lifting.
DIY or Pro? If you have a strong back, steady nerves, and a helper, DIY is doable. If heights make you nervous—or you’re upgrading to a heavier, higher-capacity unit—hiring a pro is the safer bet.
For the determined weekend warriors, keep these install tips in mind:
- Have a friend help with lifting and spotting. Your health is worth much more than what you’re saving in install costs.
- Always replace the gasket with the new unit (usually included) and tighten bolts in a crisscross pattern to ensure even pressure.
- Speaking of pressure, make sure your RV’s roof can handle the weight of your new A/C—many higher-capacity units weigh more.
- Take photos before disconnecting any wires, and check that your breaker and wiring gauge meet the amp draw of the new unit.
Get What You Need With Expert Help Nearby
Replacing RV appliances doesn’t have to be a scavenger hunt. With Parts Via’s fast, FREE ship-to-store service, you can order all the parts, tools, and accessories you need online and pick them up at a store near you.
Not only does this SAVE BIG on shipping costs, it also puts you in touch with professionals who can offer hands-on advice tailored to your RV and your replacement project. Whether you’re swapping a furnace, stove, or rooftop A/C, leveraging ship-to-store ensures you have the right products and guidance from the start—so you can focus on getting the job done safely and efficiently.