Free 2026 Florida moving checklist 8 weeks of deadlines, insurance, utilities and storm prep. Get it free →
Home / Compare / Rheem vs A.O. Smith

Rheem vs A.O. Smith: Tankless Water Heaters in Florida

Plumbing · Features, terms and questions for your Florida project

What to Compare

Compare Rheem and A.O. Smith using florida install cost, hard water tolerance, fl retail availability. Check the exact product or local service proposal, then request matching written terms before choosing for your Florida home. Use the differences below to identify the questions that matter for your project.

Head-to-Head Breakdown

Rheem

Limits and questions

  • Some 2021–2023 models had condensate-line corrosion issues in coastal FL
A.O. Smith

Features and considerations

  • More commercial-grade build quality
  • Preferred by Florida builders + plumbing contractors

Limits and questions

  • Harder to find at retail — typically through plumbing distributors

Side-by-Side Comparison

RheemA.O. Smith
Florida install cost (gas, 199k BTU)Request an itemized quote for Rheem; compare the same scope and payment period.Request an itemized quote for A.O. Smith; compare the same scope and payment period.
Florida install cost (electric, whole-home)Request an itemized quote for Rheem; compare the same scope and payment period.Request an itemized quote for A.O. Smith; compare the same scope and payment period.
Heat-exchanger WarrantyAsk the Rheem provider to document current quote and terms for the exact offer.Ask the A.O. Smith provider to document current quote and terms for the exact offer.
GPM at 60°F Rise (typical FL)Ask the Rheem provider to document current quote and terms for the exact offer.Ask the A.O. Smith provider to document current quote and terms for the exact offer.
Hard Water ToleranceAnnual descaling recommendedAnnual descaling recommended
FL Retail AvailabilityAsk the Rheem provider to document retail availability for the exact offer.Ask the A.O. Smith provider to document retail availability for the exact offer.
DIY-FriendlinessAsk the Rheem provider to document diy-friendliness for the exact offer.Pro install strongly recommended
Fit for your projectAsk the Rheem provider to document current quote and terms for the exact offer.Ask the A.O. Smith provider to document current quote and terms for the exact offer.

Frequently Asked Questions

Should I get gas or electric tankless in Florida?
If your home already has natural gas or propane plumbed, GO GAS — gas tankless can handle whole-home demand (2 simultaneous showers + dishwasher). Electric tankless requires 200-amp service + dedicated 60-80 amp circuits and tops out at 6 GPM, which is borderline for a 4-person FL home.
How big a tankless does my FL family need?
Don't let an installer push you to 9–10 GPM unless you have a soaking tub or 3+ simultaneous showers.
Will hard water destroy my tankless?
It can — but both brands handle FL hardness fine WITH annual descaling. Saves the unit and dramatically extends life.
Is Navien or Rinnai better than these?
We have separate compare pages for those. If you're choosing between Rheem and A.O. Smith specifically, the above stands. If brand-agnostic, Navien is the FL premium pick.

Consumer resources

Use these official resources when evaluating an offer. They provide general guidance and do not establish a winner between these options.

Browse Florida Plumbing Listings

These public listings share the broad plumbing category. Inclusion does not confirm that a business supplies the products or specialist services discussed above. Ask about the exact work, credentials and current availability before requesting a quote.

See all Florida Plumbing pros →