Is Your Atwood 8535 Furnace Giving Up the Ghost? Here's What to Do About a Replacement!
Okay, let's be real for a minute. If you're an RV owner and you've got an Atwood 8535 furnace tucked away in your rig, chances are you've either had a long, happy relationship with it, or you're currently in a bit of a love-hate situation. These units have been the stalwart workhorses for countless RVers over the years, reliably (mostly!) keeping us warm on chilly nights. But like anything mechanical, especially in an RV where things take a beating, there comes a time when even the best furnace starts to show its age. And when that time comes, an Atwood 8535 furnace replacement isn't just an option; it's often the smartest move you can make.
I mean, nobody wants to wake up to frosty toes, right? Or worse, spend a fortune on repair after repair only to have the furnace conk out again a week later. So, if your old friend is getting a bit long in the tooth, making strange noises, or just refusing to cooperate, let's talk about why replacing it might be your best bet and what that process looks like.
Why Consider an Atwood 8535 Furnace Replacement?
Let's cut to the chase: your Atwood 8535 is likely old. We're talking vintage in RV years. While some folks swear by their decades-old units, the typical lifespan of an RV furnace is generally around 15-20 years. If yours is pushing past that, you're living on borrowed time, my friend.
Here are a few compelling reasons to think about an upgrade:
- Age and Wear: Like any machine, internal components wear out. Circuit boards get finicky, blower motors seize, and gas valves start sticking. Parts for these older units are also becoming harder to find and more expensive, turning simple repairs into costly scavenger hunts.
- Efficiency (or Lack Thereof): Modern furnaces are just plain better at turning propane into heat. Your old 8535 might be burning through fuel at a rate that would make a gas station proud. A new unit can significantly cut down on your propane consumption, saving you money in the long run – especially if you boon-dock a lot.
- Reliability: Picture this: it's a freezing night in the middle of nowhere, and your furnace decides to throw in the towel. Not fun. A new furnace offers peace of mind, knowing you've got a reliable heating source. It's like replacing that old clunker car that constantly needed jump starts with something you can actually trust to get you where you're going.
- Safety Concerns: While proper maintenance can keep older units safe, a worn-out heat exchanger or a failing exhaust system in an old furnace could pose a carbon monoxide risk. New units come with all the latest safety features and, when properly installed, give you one less thing to worry about.
- Comfort and Noise: Let's be honest, older furnaces can be pretty loud. The roar of the blower fan kicking on can interrupt a peaceful morning coffee. Newer models are often much quieter, and they tend to provide more consistent, even heat throughout your RV.
At some point, the cost and hassle of repeated repairs will outweigh the investment in a new unit. That's when you know it's time.
Deciding on Your New Furnace: What Are Your Options?
Alright, you're convinced. Time for a new furnace! But wait, what exactly should you replace it with? Since Dometic acquired Atwood, you won't find brand-new "Atwood 8535" furnaces directly. However, Dometic and Suburban are the two big players, and they offer excellent alternatives.
Here's what to consider when choosing your replacement:
- BTU Rating Matters: This is super important. BTU (British Thermal Unit) measures the heating power. Your old 8535 probably had a specific BTU rating (like 35,000 BTUs). You generally want to stick close to that. Going too small means your furnace will run constantly trying to heat your space, and going too big can lead to short-cycling (heating up too fast, shutting off, then kicking back on quickly), which isn't efficient. Check your RV's original specifications or the data plate on your old furnace.
- Size and Fit: Measure, Measure, Measure! This is perhaps the most critical step. RV furnaces are designed to fit into specific enclosures. Take detailed measurements of your existing furnace's height, width, and depth, especially the cutout dimensions. Some units are direct "drop-in" replacements, while others might require minor modifications to the cabinet or ductwork. Dometic's current line (like the Dometic DF series) often has models designed to replace older Atwood units with minimal fuss.
- Features You Might Want:
- Electronic Ignition: If your old unit was still using a pilot light, you'll love the convenience of electronic ignition.
- Quieter Operation: Many new models boast quieter fans and redesigned airflows.
- Multi-speed Fans: Some higher-end units offer variable fan speeds, allowing for better air circulation and quieter operation at lower settings.
- Smart Thermostat Compatibility: Many newer furnaces can integrate seamlessly with modern digital or even "smart" RV thermostats.
- Budget: Naturally, prices vary. Set a realistic budget, but remember that a higher-quality, more efficient unit might cost more upfront but save you money on propane and headaches down the road.
Do your research, read reviews, and don't hesitate to call an RV parts supplier or an experienced technician for advice on compatible models.
The Replacement Process: DIY or Call a Pro?
This is where the rubber meets the road, and it's a decision that requires honest self-assessment.
Going the DIY Route (for the Brave and Experienced)
If you're handy, comfortable with tools, and have a solid understanding of RV systems, especially electrical and propane, you can tackle an Atwood 8535 furnace replacement yourself.
Pros: You'll save a significant amount on labor costs, and there's a definite sense of accomplishment in fixing things yourself.
Cons: This isn't a simple task. It involves: * Disconnecting and reconnecting propane lines (which must be done correctly and leak-tested thoroughly). * Dealing with 12V DC wiring. * Potentially modifying ductwork and exhaust venting. * Working in tight spaces.
A Crucial Warning: Propane systems are not something to mess around with if you're unsure. A gas leak is incredibly dangerous, and improper venting can lead to carbon monoxide poisoning. If you're going DIY, please, for the love of all that is warm and cozy, get a proper gas leak detector and test all connections thoroughly after reinstallation. Watch multiple detailed videos, read the new furnace's manual cover to cover, and double-check every step.
Calling in the Professionals (Peace of Mind is Priceless)
For most RVers, having a certified RV technician handle the replacement is probably the smartest choice.
Pros: * Expertise and Safety: They know exactly what they're doing, ensuring the job is done correctly and safely. They'll have the right tools and knowledge for proper leak testing and system checks. * Warranty: Your new furnace often comes with a warranty, and professional installation helps ensure that warranty is valid. Plus, many shops offer a warranty on their labor. * Time-Saving: They'll get it done efficiently, leaving you free to enjoy your RV. * Troubleshooting: If any unexpected issues arise (like old wiring quirks or ductwork challenges), a pro is equipped to handle them.
Cons: The primary downside is the cost of labor. But honestly, consider it an investment in your safety and comfort.
If you have any doubts about your ability to safely and correctly perform the replacement, don't hesitate. Find a reputable RV repair shop or a mobile RV technician. It's truly not worth risking your rig or your health.
What to Expect After Installation
Once your shiny new furnace is in place, whether by your hands or a pro's, you're in for a treat!
- Warmth Like Never Before: You'll likely notice a much more consistent and powerful heat output.
- Sweet Silence (Mostly): The difference in noise level between an old 8535 and a modern unit can be surprising and incredibly pleasant.
- Fewer Propane Runs: Enjoy fewer trips to fill up those tanks!
- Peace of Mind: No more crossing your fingers every time the thermostat calls for heat. You can relax and enjoy your adventures.
You might notice a slight "new appliance smell" for the first few hours of operation – this is normal and will dissipate quickly.
Maintenance Tips for Your New Furnace
Even a new furnace needs a little love to keep it humming along efficiently for years to come.
- Keep Vents Clear: Ensure all supply and return air vents inside your RV are unobstructed. Blocked vents make your furnace work harder.
- Clean Return Air Filter: Many furnaces have a return air grille that might collect dust. Keep it clean!
- Inspect Exterior Vents: Periodically check the exterior exhaust and intake vents for any blockages from insects, bird nests, or debris.
- Annual Check-up: Even though it's new, a yearly professional inspection by an RV tech is a great idea. They can check gas pressure, electrical connections, and clean out any dust or debris that might have accumulated.
- Carbon Monoxide Detector: This is non-negotiable. Always have a working carbon monoxide detector (and smoke detector) in your RV. Test it regularly!
Conclusion
Replacing your trusty old Atwood 8535 furnace might feel like a big undertaking, but it's an investment that pays dividends in comfort, safety, efficiency, and peace of mind. While the DIY route is an option for the experienced, don't underestimate the complexities and potential dangers involved, especially with propane. Weigh your options carefully, do your homework, and soon enough, you'll be enjoying cozy, worry-free nights in your RV, no matter how cold it gets outside. Happy trails, and stay warm out there!