Tank heaters from Suburban, Dometic and newer brands, in 6, 10 and 12 gallon sizes. Steel tanks have an anode rod to replace; aluminum tanks don’t. Gas-electric models add an electric element for campgrounds with shore power.
Prices were last checked November 4, 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.
Full ranking 21
- Suburban SW12DEL (5248A)#1 of 21Full 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 $669.90$669.9012,000 BTU12 galPropane + electric - Suburban SW12DE (5247A)#2 of 21Full 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 $690.92$690.9212,000 BTU12 galPropane + electric - Suburban SW10D (5242A)#3 of 21Full review
A 10-gallon steel tank heater on propane for a straight swap in an RV with the matching cutout.
Amazon $591.09$591.0912,000 BTU10 galPropane - Suburban SW10DE (5243A)#4 of 21Full 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 $594.99$594.9912,000 BTU10 galPropane + electric - Suburban SW10DEL (5244A)#5 of 21Full 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 $639.99$639.9912,000 BTU10 galPropane + electric - Dometic WH-10GEA#6 of 21Full review
A 10-gallon aluminum tank heater that runs on propane and electric for a straight swap in an RV with the matching cutout.
Amazon $660$66010,000 BTU10 galPropane + electric - Suburban SW6D (5238A)#7 of 21Full review
A 6-gallon steel tank heater on propane for a straight swap in an RV with the matching cutout.
Amazon $439.99$439.9912,000 BTU6 galPropane - KingRVer 10 Gallon Propane/Electric#8 of 21Full 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 $529.99$529.9912,000 BTU10 galPropane + electric - Suburban SW6DEL (5240A)#9 of 21Full review
A 6-gallon steel tank heater that runs on propane and electric for a straight swap in an RV with the matching cutout.
Amazon $479.99$479.9912,000 BTU6 galPropane + electric - KingRVer 10 Gallon Replacement#10 of 21Full 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 $589.99$589.99-10 galPropane + electric - KingRVer 10 Gallon Gas/Electric#11 of 21Full 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 $599.99$599.99-10 galPropane + electric - Suburban SW6DE (5239A)#12 of 21Full review
A 6-gallon steel tank heater that runs on propane and electric for a straight swap in an RV with the matching cutout.
Amazon $499.99$499.9912,000 BTU6 galPropane + electric - Dometic WH-6GA#13 of 21Full review
A 6-gallon aluminum tank heater on propane for a straight swap in an RV with the matching cutout.
Amazon $522.85$522.8510,000 BTU6 galPropane - Suburban SAW6D (5320A)#14 of 21Full review
A 6-gallon steel tank heater on propane for a straight swap in an RV with the matching cutout.
Amazon $554.17$554.1710,000 BTU6 galPropane - KingRVer 6 Gallon Propane DSI#15 of 21Full review
A 6-gallon steel tank heater on propane for a straight swap in an RV with the matching cutout.
Amazon $399.99$399.99-6 galPropane - KingRVer 6 Gallon Propane/Electric#16 of 21Full review
A 6-gallon steel tank heater that runs on propane and electric for a straight swap in an RV with the matching cutout.
Amazon $399.99$399.99-6 galPropane + electric - Dometic WH-16GEA#17 of 21Full review
A 10-gallon aluminum tank heater that runs on propane and electric for a straight swap in an RV with the matching cutout.
Amazon $920.19$920.19-10 galPropane + electric - Dometic WH-6GEA#18 of 21Full review
A 6-gallon aluminum tank heater that runs on propane and electric for a straight swap in an RV with the matching cutout.
Amazon $576.63$576.63-6 galPropane + electric - Suburban SAW6DE (5321A)#19 of 21Full review
A 6-gallon steel tank heater that runs on propane and electric for a straight swap in an RV with the matching cutout.
Amazon $613.51$613.5110,000 BTU6 galPropane + electric - Suburban SAW6DEL (5322A)#20 of 21Full review
A 6-gallon steel tank heater that runs on propane and electric for a straight swap in an RV with the matching cutout.
Amazon $624.18$624.1810,000 BTU6 galPropane + electric - Camplux RG600W 6 Gallon#21 of 21Full review
A 6-gallon steel tank heater that runs on propane and electric for a straight swap in an RV with the matching cutout.
Amazon $436.99$436.9912,000 BTU6 galPropane + electric
