The 30-Second Verdict
AO Smith and Rheem are the two largest water heater manufacturers in North America — both are solid, but they target slightly different buyers in the Florida market.
Head-to-Head Breakdown
AO Smith
Pros
- Industry's longest-running water heater manufacturer (founded 1874)
- iCOMM smart diagnostics and remote monitoring on premium models
- Excellent ProLine and Signature commercial-grade lines
- Strong contractor network in Florida for service and warranty claims
- First-hour rating among the best in class for tank models
Cons
- Premium models cost 10–15% more than comparable Rheem units
- Fewer retail availability options (mostly contractor-supplied)
- Some models use proprietary parts that can be harder to source locally
- App interface reported as less intuitive than Rheem's EcoNet
Rheem
Pros
- EcoNet smart platform with intuitive app control and scheduling
- Wider retail availability (Home Depot, Lowe's, plumbing supply houses)
- ProTerra hybrid heat pump water heater is a top performer for Florida efficiency
- Strong mid-tier value — similar reliability at lower price points
- Rebates often available from Florida utilities for qualifying heat pump models
Cons
- Some lower-end models have above-average complaint rates
- Heat pump models require adequate space (700+ cu ft of air) — not every Florida utility room qualifies
- Warranty service can vary by local distributor
- Tank sediment buildup more commonly reported in Florida's hard-water areas
Side-by-Side Comparison
| AO Smith | Rheem | |
|---|---|---|
| Tank water heater lifespan | 12–15 years | 10–12 years |
| Smart connectivity | iCOMM app (advanced diagnostics) | EcoNet app (user-friendly) |
| Heat pump option | Voltex hybrid series | ProTerra hybrid (top-rated) |
| Florida utility rebates | Eligible on qualifying models | Frequently listed by FPL and Duke |
| Warranty (tank) | 6–12 years depending on model | 6–12 years depending on model |
| Retail availability | Contractor/supply house focus | Home Depot, Lowe's, supply houses |
| Price range (50-gal tank) | $600–$1,200 | $500–$1,100 |
| Best for Florida homes | Larger homes with high hot water demand | Mid-size homes seeking value + smart features |
Frequently Asked Questions
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