Questions & Answers
If you've got questions about your Suburban RV furnace, check out this list of questions frequently asked by our customers. If you have other questions, please don't hesitate to contact us.
Can I repair my furnace myself?
No. Never attempt repairs yourself. The unit must be serviced by a qualified installer, service agency or gas supplier. Improper installation, adjustment, alteration, service or maintenance can cause property damage, personal injury or loss of life.
If I have a product problem, how do I get service?
First, if your RV has its original furnace and is still under the RV manufacturer's warranty, follow the steps described in your RV owners manual. Second, contact a conveniently located Suburban Recommended Service Center. A list of such service centers is located in this section of the web site. Describe to them the nature of your problem and make an appointment to have the problem corrected. Third, you and the service center can contact Suburban's Customer Service Department at P.O. Box 399, Dayton, Tenn., 37321, or call us at 423-775-2131 if more assistance is needed.
Where can I get parts for my furnace?
Genuine Suburban replacement parts are available from Suburban service centers. If the service agency does not have the merchandise you need in stock, they can order for you. If there is no Recommended Service Center in your area, you may contact any local RV dealer or service agency for assistance. Suburban sells through most RV wholesalers, so the local agency should be able to order parts for you through their normal source.
My service company/dealer has generic parts for my furnace that cost less. Are these parts OK?
Use of generic replacement parts is not recommended or approved by Suburban. Our first concern is your safety. Second is our concern over product performance and customer satisfaction. When you install a non-Suburban part, we can guarantee neither. Be aware that use of non-Suburban parts will void the warranty and you will assume liability consequences. It also violates the intent of the UL, CUL, AGA or CGA certifications.
Can I use my furnace while driving?
No. Suburban does not feel this is a safe practice. Some states have laws forbidding the use of propane while driving. You should be sure all gas appliances are off and their ignition systems are off while the vehicle is in motion or being towed.
Is it safe to install a bug screen over my furnace vent?
No. Suburban does not approve - nor do we recommend - using the aftermarket screens being sold to cover the outside vent cap. This restricts the exhaust and intake air, resulting in improper burner operation and a potentially unsafe condition.
My current furnace needs to be replaced. What BTUH size should I buy to replace it?
Check your furnace data plate for BTUH input. The replacement should be the same BTUH size or a close equivalent. Do not oversize your furnace. Too much heating capacity leads to rapid cycling and reduced comfort levels. If you do choose a larger BTUH furnace, your installer must make sure the installation requirements meet or exceed Suburban's installation requirements for ducting, return air, clearances and gas pipe size.
Is there any preventative maintenance required on furnaces?
Yes. We recommend an annual inspection by a qualified service technician. Also, you as the owner/user should inspect the furnace monthly during the heating season for the presence of soot on the vent. Operating the furnace in this condition could lead to serious property damage, personal injury or loss of life. If soot is observed on the vent, immediately shut down the furnace and contact a qualified service agency.
Can I close off a register so more heat goes to another part of the vehicle?
No, this is not recommended. Doing so will cause improper furnace operation and possible overheating of the furnace.
What causes the majority of furnace problems?
Conditions that can affect the performance of your furnace can include:
- Low gas pressure caused by a number of factors, including a malfunctioning regulator or low gas levels in the tank. This can only be tested by a qualified service technician.
- Low voltage, which again can only be checked by a certified service technician.
- Inadequate ducting. Have your dealer make sure the furnace has at least the minimum number of ducts and required duct area (min. sq. inches), excluding closeable outlets. Check for proper duct connections at the furnace or collapsed ducts. Make sure ducts are clean and clear of obstructions, and are as straight and tight as possible.
- Restricted or insufficient air return: the return air passage should meet the minimum open square inches as specified for the particular model of furnace installed. It must not be blocked or restricted. Keep the furnace compartment clea of any materials that can block the air flow around the furnace.
- Unauthorized alterations and improper reinstallations.
- Failure to adhere to the preventative maintenance measures outlined in the users manual.
My furnace runs, but it's just blowing cold air. What's wrong?
Your furnace is in lock-out or the limit switch has opened and not reset. Lock-out occurs when a problem exists during the trial for ignition. Your dealer or a Suburban service center should be consulted to diagnose this condition.