Suburban SW12DE (5247A)
#3 in TankFull review
A 12-gallon steel tank heater that runs on propane and electric for a straight swap in an RV with the matching cutout.
Amazon $719.71$719.71
The Suburban SW12DE (5247A) is the better RV water heater overall, rated 3.4 to 3.2. The Suburban SW12DE (5247A) leads on value. The Suburban SW10DE (5243A) costs $4.71 less ($715 vs $719.71).
Prices were last checked November 11, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Suburban SW10DE (5243A)
#9 in TankFull review
A 10-gallon steel tank heater that runs on propane and electric for a straight swap in an RV with the matching cutout.
Amazon $715$715
Which should you buy?
- Choose the Suburban SW12DE (5247A) for value ($59.98 per gallon of tank ($719.71, 12 gal) vs $71.50 per gallon of tank ($715, 10 gal)).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every tank RV water heater; a clear win is highlighted. How we rank explains each one.
| Factor weight | Suburban SW12DE (5247A) | Suburban SW10DE (5243A) |
|---|---|---|
| Overall rating | 3.4/5 | 3.2/5 |
| Value 40% | 60 $59.98 per gallon of tank ($719.71, 12 gal) | 43 $71.50 per gallon of tank ($715, 10 gal) |
| Hot water output 35% | 51 10.1 gal/h recovery on gas | 51 10.1 gal/h recovery on gas |
| Warranty 25% | 50 2-year warranty | 50 2-year warranty |
Specifications
| Suburban SW12DE (5247A) | Suburban SW10DE (5243A) | |
|---|---|---|
| Heat and water | ||
| Input capacity | 12,000 BTU | 12,000 BTU |
| Tank size | 12 gal | 10 gal |
| Gas recovery | 10.1 gal/h | 10.1 gal/h |
| Fuel | Propane + electric | Propane + electric |
| Fit | ||
| Weight | 47.5 lb | 46 lb |
| Warranty | ||
| Warranty | 2 years | 2 years |