SuburbanRP-35FQ 35,000 BTU/h RV Replacement Core for Suburban Furnace Series F-42F, SF-35F, SF-35FQ, SF-42FQ, SF-FQ (2610A)

Our SF-30 furnace stopped working (would turn on, fan would spin and would hear clicking but no heat and within like a minute it would shut off. Replace the sail switch with the best oem look alike I could buy but it was still the $8 cheap black one. Worked for a couple times then stopped working again. Figured it could be the sail switch again or motherboard ($20 part or $150+) so to skip buying something and taking it all apart and it not work and having to wait all over again and repeat the process I just bought the replacement core. My initial concern was the gas hook up but it comes with the adapter piece to make it go up and fit smoothly. Next was the wiring because I have 0 experience but I just disconnected from shore power and the battery and tripped the breakers off (over kill I know but I’m a noob lol) took a video of how it was already connected and repeated the same. Only concern I had was the two blue wires since one had a stripe and on the old unit they were solid but the one with the strip goes to the small red wire. Super easy instal, fires up everytime now. Gonna take the old one to a shop and get diagnosed for $35 and replace whatever’s wrong exactly for a reliable back up. Great product

I have a 2013 Keystone Cougar fifth wheel trailer. I camped in the Colorado mountains a month ago. I set the furnace on the first night and went to bed. We later woke to the Carbon Monoxide alarm and I immediately shut off the furnace and ventilated the RV. Everyone was ok including our pets. I now have two Carbon Monoxide detectors in the trailer! After returning home, I purchased and received a hand held carbon monoxide detector from Amazon. I started the old furnace at home and the air from the original furnace immediately set off the alarm on the hand held CO detector. I removed the old Suburban furnace, located the manufacturers model number and ordered the Suburban Replacement Core. The new core fit well in my 11 year old furnace enclosure. The only modification was drilling one small hole in the enclosure to match up to the hole in the rear foot of the new core. Start by turn all electrical and propane off. You will need to cut wires going to the old furnace. Mark both ends and inspect where they connected to the old furnace. The new core wiring is of course different than the old one but take your time it isn't too hard to figure out. The new one came some install instructions and thankfully, a wiring diagram. The new furnace exceeded my expectations. It pushes more air, it is about the same for noise, and it puts out hotter air than the old one.

What an incredible deal! If you have tested your sail switch and that's not the problem then just buy this and be done with it. Slips right in old sleeve and works great! This is upgraded and it is surprisingly more powerful and much more quiet than the 10-year-old model that is in my RV. Worth every penny! Don't bother replacing your motor or control board if your heater is already 7 years old or older you'll just start having other problems with it especially if it's in a RV that is lived in like a park model and used frequently just upgrade just buy this and put it in it's an upgrade all the way around

Others have mentioned shipping damage. This item arrived to me double-boxed. The outer box was completely free of damage. The inner box, which is the original packaging, has considerable damage. The only damage I could see to the core was the igniter being pushed in.I was able to pull the igniter core back into place. It had no trouble lighting the burner. In the worst case, I still have the old core and its igniter will probably work.The unit is a very tight fit into the old shell. It needs to be tight, else the air flow through it does not work right. It took a bit of wiggling, but I made it work.The wire connections are clearly explained in the manual and also on a sticker on the core. It is very odd to use yellow as the ground wire.It is about as loud as the old core. The fan blades are plastic now instead of metal. The new unit vibrates a bit less than the old. It blows air about the same.

After 6 months of use in our 35’RV that we live in, the fan in this unit started making a louder noise, indicating that it was not working properly. Because the fan was only turning about half speed, the heating core would start to smell, indicating overheating. It had 1 1/2 years left of the 2 year warranty. Upon further review of the warranty, and a call to Suburban, they ask that the unit be serviced by one of their service centers. But, they will not pay for freight for new replacement parts. This replacement core was bought on Amazon, and my husband installed it perfectly, but they insist it be taken to an authorized service centers, (which is 130 miles away)! The first option that they gave was to return to Amazon (30 days only). After full review of the warranty, it seems that they use many reasons to decline the customer good warranty service.Suburban will not just send another unit, nor the parts to fix. NOT HAPPY.

EASY to install, works without any adjustments. I have over one hundred hours on furnace, no problems.

Why did you pick this product vs others?:This works well and the cost is so much less than an entire furnace. But, it was not an easy install. In particular, it seemed a bit oversized for the old housing and it had to be forced into place using a rubber mallet.

Even though this furnace is about 4k BTU less than my original NT34SP, but you would never know it. I'm getting better heating with this core replacement.I did not need the supplied wire harness as the former was wired exactly the same and fit like a glove.It's nice to save a couple buck with not having to buy the box the furnace sits in. There is certainly nothing wrong with my old one and the core slipped in it like it was made for it. Perhaps it was.