Research-based pick — not personally tested
Sold in the USA

A.O. Smith Voltex MAX Hybrid Electric Heat Pump Water Heater (HPTA-50 210)

A US-market heat pump hot water system from A.O. Smith, ENERGY STAR certified and rated at roughly four times the efficiency of a standard electric-resistance water heater. A useful US-specific complement to our existing Rheem ProTerra listing, which is Australia-only.

Outdoor heat pump unit mounted on a brick wall
Specs
uef
3.68
features
Premium Smart Valve Technology,dual heating elements,leak detection with auto shutoff,iCOMM smart connectivity
energy star
true
tank size gal
50
warranty years
10
min operating temp f
-25

Pros

  • ENERGY STAR certified with a strong published UEF of 3.68
  • Rated to keep operating down to -25°F ambient, genuinely cold-climate capable
  • Leak detection with automatic shutoff and smart connectivity included as standard

Cons

  • A.O. Smith has limited presence in the Australian market, this is a US-focused listing
  • Exact current MAX-tier price could not be confirmed, budget above the base-tier anchor price
  • 50-gallon tank sizing may be undersized for a larger household, check A.O. Smith's 66 and 80-gallon MAX variants

Common questions

Does this work in a cold garage or basement?
A.O. Smith rates this unit to keep operating down to -25°F ambient temperature, so a cold, unheated garage or basement is generally within its operating range, but check clearance and ambient temperature requirements in the installation manual for your specific situation.
Is there an Australian equivalent?
A.O. Smith is not a major brand in Australia. See our Rheem ProTerra hot water heat pump listing for a comparable Australian-market product.