Catalog finder
Find the right A. O. Smith configuration for your home
Filter by system type, fuel, capacity, venting, space and how your household actually uses hot water. Every configuration links to official A. O. Smith literature and to the Hot Water Express warehouse for current pricing.
Independent local installer; not affiliated with or endorsed by A. O. Smith. A. O. Smith product names and logos are the property of their owner and are used here only to identify the equipment we install and service. Manufacturer warranty terms are set and administered by the manufacturer.
Browse configurations
9 configurations match
- TankStandard efficiency
Gas tank — atmospheric vent
The standard gas storage water heater that already sits in most DMV basements, vented into an existing chimney or B-vent.
- Fuel
- Natural gas, Propane
- Capacity
- 30, 40, 50, 75 gal
- Venting
- Atmospheric vent
- Space
- Needs the existing flue path plus combustion air and service clearance around the unit.
Household fit: One to two bathrooms with normal, staggered hot-water use.
- · Existing vent condition and draft are checked before a new unit goes in.
- · Older installs often need the gas flex, shutoff and expansion tank brought current.
Price set by Hot Water ExpressView current warehouse priceOfficial reference: A. O. Smith residential water heaters · A. O. Smith residential product brochure (PDF)
- TankHigher efficiency
Gas tank — power vent
A blower pushes exhaust out through PVC, so the heater does not depend on a chimney. Common when a chimney is lined, shared or unusable.
- Fuel
- Natural gas, Propane
- Capacity
- 40, 50, 75 gal
- Venting
- Power vent
- Space
- Needs a nearby exterior wall for the vent run and a dedicated electrical outlet.
Household fit: Two to three bathrooms, including homes with back-to-back showers.
- · Requires a 120V outlet within reach of the unit.
- · Vent termination clearances to windows, doors and property lines are verified on site.
Price set by Hot Water ExpressView current warehouse priceOfficial reference: A. O. Smith residential water heaters · A. O. Smith residential product literature
- TankHigher efficiency
Gas tank — direct vent
Pulls combustion air from outdoors and vents outdoors, which suits tight mechanical closets and finished spaces.
- Fuel
- Natural gas, Propane
- Capacity
- 40, 50 gal
- Venting
- Direct vent, Sealed combustion
- Space
- Best where the unit sits close to an exterior wall; no indoor combustion air needed.
Household fit: One to two bathrooms in tighter, finished or conditioned spaces.
- · Vent kit routing and termination height are confirmed before scheduling.
- · Closet clearances and door louvers are reviewed as part of the scope.
Price set by Hot Water ExpressView current warehouse priceOfficial reference: A. O. Smith residential water heaters · A. O. Smith residential product literature
- TankStandard efficiency
Electric tank
No combustion air, no flue. The default in condos, closets and all-electric homes across the region.
- Fuel
- Electric
- Capacity
- 30, 40, 50, 66, 80 gal
- Venting
- No venting required
- Space
- Fits closets and utility rooms; only service clearance and a drain path are needed.
Household fit: One to three bathrooms, sized up when recovery time matters.
- · Existing circuit size and breaker are confirmed against the new unit.
- · Pan and discharge routing matter most in finished or upper-floor locations.
Price set by Hot Water ExpressView current warehouse priceOfficial reference: A. O. Smith residential water heaters · A. O. Smith residential product brochure (PDF)
- TankStandard efficiency
Electric tank — short / lowboy
A shorter, wider electric tank for crawlspaces, under-stair closets and low-ceiling utility areas.
- Fuel
- Electric
- Capacity
- 30, 40, 50 gal
- Venting
- No venting required
- Space
- Chosen specifically when height clearance is the limiting factor.
Household fit: One to two bathrooms in space-constrained homes.
- · Measured height, width and door path are confirmed before ordering.
- · Connections often need to be reworked when switching from a tall to a short tank.
Price set by Hot Water ExpressView current warehouse priceOfficial reference: A. O. Smith residential water heaters · A. O. Smith residential product literature
- TanklessHighest efficiency
Gas tankless
Wall-mounted, heats on demand, and frees the floor space a tank occupies. Sizing is about flow, not gallons.
- Fuel
- Natural gas, Propane
- Flow
- Typically sized around 6–11 GPM depending on incoming water temperature and fixture count
- Venting
- Direct vent, Sealed combustion
- Space
- Wall-mounted; needs a vent path plus service access for descaling.
Household fit: Homes that want continuous hot water and run fixtures simultaneously.
- · Gas line capacity and meter sizing are verified before committing to tankless.
- · Stainless vent, condensate handling and isolation valves are part of a correct install.
- · Hard water in parts of the region makes descaling maintenance a real factor.
Price set by Hot Water ExpressView current warehouse priceOfficial reference: A. O. Smith residential water heaters · A. O. Smith residential product literature · A. O. Smith water heater selector tool
- Hybrid heat pumpHighest efficiency
Hybrid heat pump (electric)
Moves heat from surrounding air into the tank instead of generating all of it, which is why it is the efficiency leader among electric options.
- Fuel
- Electric
- Capacity
- 50, 66, 80 gal
- Venting
- No venting required
- Space
- Needs adequate air volume around it, headroom for the compressor housing, and a condensate path.
Household fit: Two to four bathrooms in electric homes with a suitable basement or utility space.
- · Air volume, ambient temperature and clearances decide whether the space works.
- · Condensate needs a drain, pump or approved routing.
- · Unit is taller than a standard tank and produces some operating noise.
- · Rebate and tax-credit programs change — confirm current terms with the utility and ENERGY STAR before assuming eligibility.
Price set by Hot Water ExpressView current warehouse priceOfficial reference: A. O. Smith residential water heaters · A. O. Smith residential product literature · A. O. Smith water heater selector tool
- IndirectHigher efficiency
Indirect-fired tank
A storage tank heated by an existing boiler. Common in older DMV homes already running hydronic heat.
- Fuel
- Natural gas
- Capacity
- 40, 50, 80 gal
- Venting
- No venting required
- Space
- Sits beside the boiler; no separate flue of its own.
Household fit: Boiler homes with steady, whole-house hot-water demand.
- · Boiler condition and control wiring determine whether this is the right path.
- · Zone valve or circulator work is usually part of the scope.
Price set by Hot Water ExpressView current warehouse priceOfficial reference: A. O. Smith residential water heaters · A. O. Smith residential product literature
- CommercialHigher efficiency
Commercial water heating
Higher-recovery gas and electric equipment for buildings, multifamily, restaurants and light industrial spaces.
- Fuel
- Natural gas, Electric
- Capacity
- 75, 100, 120 gal
- Venting
- Atmospheric vent, Power vent, Direct vent
- Space
- Mechanical-room siting, rigging path and code clearances drive the plan.
Household fit: Buildings with peak-demand and recovery requirements, not household sizing.
- · Peak demand, recovery and redundancy are scoped with the property team.
- · Rigging, shutdown windows and tenant notification are planned before the swap.
Price set by Hot Water ExpressView current warehouse priceOfficial reference: A. O. Smith residential water heaters · A. O. Smith residential product literature
Pricing
How pricing works here
Equipment pricing is shown in our warehouse. Installed pricing is quoted after we confirm the details below — we do not publish estimated installed prices.
1. Equipment
The water heater itself — type, fuel, capacity and features. Current equipment pricing is shown in the Hot Water Express warehouse, not on this site.
2. Installation scope
Labor plus what the swap actually requires: connections, shutoff and expansion tank, venting termination, drain pan and discharge, and bringing the existing setup to current code.
3. Permit, haul-away and add-ons
Jurisdiction permit and inspection where required, disposal of the old unit, and any optional add-ons such as recirculation, water treatment, leak sensors or upgraded shutoffs.
4. Field verification
The final number is confirmed on site. Fuel, venting condition, electrical capacity, clearances and water quality can change the scope — we tell you before any work starts.
Official manufacturer sources
Specifications, dimensions and warranty terms are published by the manufacturer. Go straight to the source.
- A. O. Smith residential water heaters
- A. O. Smith residential product literature
- A. O. Smith residential product brochure (PDF)
- A. O. Smith water heater selector tool
- A. O. Smith product cross-reference
Prefer to be walked through it? Use the guided quiz or compare system types.
Know the configuration? We'll confirm it on site.
Final sizing, venting and code items are verified in your home before anything is ordered.
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