Short answer (updated November 1, 2026)
Rated sound levels for heat pump water heaters range from 37 to 55 dBA in ENERGY STAR data. The quietest rated model is the SANCO2 GS5-45HPC HP + ECO-43SSAQB at 37 dBA; the quietest all-in-one (integrated) unit is the GE Profile PF40S10FPY01 at 41 dBA. For scale, 40 dBA is a quiet library and 50 dBA is a quiet conversation. Only 159 of 726 certified listings report a sound level, so many popular models are not in this table.
Every model with a rated sound level, quietest first
Split systems place the compressor outdoors, so indoor noise is lower than the rating suggests. Variants with identical certified performance are grouped.
| Model | Type | Gallons | Noise | UEF | kWh/yr | Min. air temp |
|---|---|---|---|---|---|---|
| SANCO2 GS5-45HPC HP + ECO-43SSAQB + 1 variant | Split | 43 | 37 dBA | 3.70 | 868 | — |
| SANCO2 GS5-45HPC HP + ECO-83SSAQB + 1 variant | Split | 83 | 37 dBA | 3.80 | 1,313 | -26°F |
| SANCO2 GS5-45HPC HP + ECO-119GLBK + 1 variant | Split | 119 | 37 dBA | 3.72 | 1,333 | -26°F |
| GE Profile PF40S10FPY01 + 1 variant | 120V plug-in | 40 | 41 dBA | 3.10 | 724 | 35°F |
| GE Profile PH40S10BPY01 | 240V | 40 | 41 dBA | 4.20 | 773 | 35°F |
| GE Profile PK50S10FNY01 | 240V | 50 | 41 dBA | 4.20 | 773 | 35°F |
| GE Profile PK65S10FNY01 | 240V | 65 | 41 dBA | 4.10 | 792 | 35°F |
| GE Profile PF50S10FPY01 (no longer made) + 1 variant | 120V plug-in | 50 | 41 dBA | 3.20 | 1,015 | 35°F |
| GE Profile PH50S10BNY01 | 240V | 50 | 41 dBA | 4.50 | 1,102 | 35°F |
| GE Profile PH80S10BNY01 | 240V | 80 | 41 dBA | 4.50 | 1,102 | 35°F |
| GE Profile PK80S10FNY01 | 240V | 80 | 41 dBA | 4.50 | 1,102 | 35°F |
| GE Profile PH80S10BPY01 (no longer made) | 240V | 80 | 41 dBA | 4.40 | 1,127 | 35°F |
| GE Profile PH50S10BPY01 (no longer made) | 240V | 50 | 41 dBA | 4.30 | 1,154 | 35°F |
| GE Profile PH65S10BNY01 | 240V | 65 | 41 dBA | 4.30 | 1,154 | 35°F |
| GE Profile PH65S10BPY01 (no longer made) | 240V | 65 | 41 dBA | 4.30 | 1,154 | 35°F |
| GE Profile PF80S10FPY01 (no longer made) + 1 variant | 120V plug-in | 80 | 41 dBA | 3.50 | 1,417 | 35°F |
| GE Profile PF65S10FPY01 (no longer made) + 1 variant | 120V plug-in | 65 | 41 dBA | 3.40 | 1,459 | 35°F |
| LG APHWC501M | 240V | 53 | 42 dBA | 3.93 | 1,262 | 23°F |
| LG APHWC801M | 240V | 72 | 42 dBA | 3.90 | 1,272 | 23°F |
| A. O. Smith HPTS-50-2 | 240V | 46 | 45 dBA | 3.80 | 831 | 37°F |
| Navien NWP500S050AUMB | 240V | 44 | 45 dBA | 3.85 | 840 | 41°F |
| American HPA10250H045DV-2 | 240V | 46 | 45 dBA | 3.68 | 883 | 37°F |
| A. O. Smith HPTS-66-2 | 240V | 67 | 45 dBA | 3.70 | 1,233 | 37°F |
| Navien NWP500S065AUMB | 240V | 61 | 45 dBA | 4.03 | 1,245 | 41°F |
| Navien NWP500S080AUMB | 240V | 74 | 45 dBA | 4.05 | 1,265 | 41°F |
| A. O. Smith HPTS-80-2 | 240V | 82 | 45 dBA | 3.88 | 1,279 | 37°F |
| American HPA10280H045DV-2 | 240V | 81 | 45 dBA | 3.88 | 1,279 | 37°F |
| American HPA10266H045DV-2 | 240V | 68 | 45 dBA | 3.84 | 1,292 | 37°F |
| A. O. Smith HPTV-50-2 + 5 variants incl. American, Lochinvar, RELIANCE WATER HEATERS | 120V plug-in | 46 | 45 dBA | 3.00 | 1,550 | 37°F |
| A. O. Smith HPTV-66-2 + 5 variants incl. American, Lochinvar, RELIANCE WATER HEATERS | 120V plug-in | 68 | 45 dBA | 3.20 | 1,550 | 37°F |
| A. O. Smith HPTV-80-2 + 5 variants incl. American, Lochinvar, RELIANCE WATER HEATERS | 120V plug-in | 82 | 45 dBA | 3.00 | 1,654 | 37°F |
| Eco-Logical OMNI-50HP1-1A | Split | 46 | 49 dBA | 3.30 | 681 | 5°F |
| Eco-Logical OMNI-50HP2-1A | Split | 46 | 49 dBA | 4.23 | 769 | 5°F |
| Rinnai REHP50C + 1 variant | 240V | 46 | 49 dBA | 3.75 | 844 | 37.4°F |
| Rheem PROPH50 T2 RH400-30 | 240V | 45 | 49 dBA | 3.88 | 846 | 37°F |
| 1HVAC ACIQ-50G-HP-WH + 4 variants incl. ACIQ, DIYCOOL, PolarWave | 240V | 47 | 49 dBA | 3.75 | 855 | 37.4°F |
| Alsetria HPWH-50G + 1 variant incl. ECO-AIR | 240V | 47 | 49 dBA | 3.75 | 855 | 37.4°F |
| Bosch TR7000T - 50CA + 1 variant | 240V | 47 | 49 dBA | 3.75 | 855 | 37.4°F |
| Custom Comfort CCOHPWH50A | 240V | 47 | 49 dBA | 3.75 | 855 | 37.4°F |
| Eco-Logical ECO-50HPM1A | 240V | 47 | 49 dBA | 3.75 | 855 | 37.4°F |
| Perfect aire 1PAWH50G + 1 variant incl. Gridless | 240V | 47 | 49 dBA | 3.75 | 855 | 37.4°F |
| Kepler AZMCHW-50VN3A | 240V | 47 | 49 dBA | 3.75 | 855 | 37.4°F |
| Midea MAWH50D2AKH + 3 variants | 240V | 47 | 49 dBA | 3.75 | 855 | 37.4°F |
| NOVAIR TCL-50GL-R134A | 240V | 47 | 49 dBA | 3.75 | 855 | 37.4°F |
| Senville SENWH-HP50 + 1 variant | 240V | 47 | 49 dBA | 3.75 | 855 | 37.4°F |
| stream33 S33-HPWH50 | 240V | 47 | 49 dBA | 3.75 | 855 | 37.4°F |
| Rheem PROPH40 T2 RH400-30 | 240V | 36 | 49 dBA | 3.83 | 859 | 37°F |
| A. O. Smith HPTA-50-2 | 240V | 46 | 49 dBA | 3.68 | 883 | 37°F |
| A. O. Smith HPTA-40-2 | 240V | 36 | 49 dBA | 3.60 | 902 | 37°F |
| Rheem PROPH65 T2 RH400-30 | 240V | 59 | 49 dBA | 4.05 | 1,184 | 37°F |
| Eco-Logical OMNI-80HP2-1A | Split | 74 | 49 dBA | 4.11 | 1,206 | 5°F |
| Rheem PROPH80 T2 RH400-30 | 240V | 72 | 49 dBA | 4.07 | 1,213 | 37°F |
| Rinnai REHP80 + 2 variants | 240V | 75 | 49 dBA | 4.00 | 1,225 | 37.4°F |
| 1HVAC ACIQ-80G-HP-WH + 4 variants incl. ACIQ, DIYCOOL, PolarWave | 240V | 74 | 49 dBA | 4.00 | 1,240 | 37.4°F |
| Alsetria HPWH - 65G + 1 variant incl. ECO-AIR | 240V | 60 | 49 dBA | 3.90 | 1,240 | 37.4°F |
| Alsetria HPWH-80G + 1 variant incl. ECO-AIR | 240V | 74 | 49 dBA | 4.00 | 1,240 | 37.4°F |
| Bosch TR7000T-65CA + 1 variant | 240V | 60 | 49 dBA | 3.90 | 1,240 | 37.4°F |
| Bosch TR7000T - 80CA + 1 variant | 240V | 74 | 49 dBA | 4.00 | 1,240 | 37.4°F |
| Custom Comfort CCOHPWH65A | 240V | 60 | 49 dBA | 3.90 | 1,240 | 37.4°F |
| Custom Comfort CCOHPWH80A | 240V | 74 | 49 dBA | 4.00 | 1,240 | 37.4°F |
| Eco-Logical ECO-65HPM1A | 240V | 60 | 49 dBA | 3.90 | 1,240 | 37.4°F |
| Eco-Logical ECO-80HPM1A | 240V | 74 | 49 dBA | 4.00 | 1,240 | 37.4°F |
| Gridless AYHW80G | 240V | 74 | 49 dBA | 4.00 | 1,240 | 37.4°F |
| Kepler AZMCHW-65VN3A | 240V | 60 | 49 dBA | 3.90 | 1,240 | 37.4°F |
| Kepler AZMCHW-80VN3A | 240V | 74 | 49 dBA | 4.00 | 1,240 | 37.4°F |
| Midea MAWH65D2AKH + 3 variants | 240V | 60 | 49 dBA | 3.90 | 1,240 | 37.4°F |
| Midea MAWH80D2AKH + 3 variants | 240V | 74 | 49 dBA | 4.00 | 1,240 | 37.4°F |
| NOVAIR TCL-65GL-R134A | 240V | 60 | 49 dBA | 3.90 | 1,240 | 37.4°F |
| NOVAIR TCL-80GL-R134A | 240V | 74 | 49 dBA | 4.00 | 1,240 | 37.4°F |
| Rinnai REHP65 + 5 variants | 240V | 60 | 49 dBA | 3.90 | 1,240 | 37.4°F |
| Senville SENWH-HP65 + 1 variant | 240V | 60 | 49 dBA | 3.90 | 1,240 | 37.4°F |
| stream33 S33-HPWH80 | 240V | 74 | 49 dBA | 4.00 | 1,240 | 37.4°F |
| A. O. Smith HPTA-80-2 | 240V | 81 | 49 dBA | 3.88 | 1,279 | 37°F |
| A. O. Smith HPTA-66-2 | 240V | 68 | 49 dBA | 3.84 | 1,292 | 37°F |
| Midea MAHW-50VN3A | 240V | 47 | 49.5 dBA | 3.75 | 855 | 37.4°F |
| Midea MAHW-65VN3A | 240V | 60 | 49.5 dBA | 3.90 | 1,240 | 37.4°F |
| Midea MAHW-80VN3A | 240V | 74 | 49.5 dBA | 4.00 | 1,240 | 37.4°F |
| Bradford White RE2HP50-1NCTT | 240V | 45 | 51 dBA | 3.89 | 835 | 37°F |
| Bradford White RE2H50S | 240V | 45 | 51 dBA | 3.44 | 944 | 35°F |
| Bradford White RE2HP65-1NCTT | 240V | 65 | 51 dBA | 4.20 | 1,181 | 37°F |
| Bradford White RE2HP80-1NCTT | 240V | 75 | 51 dBA | 4.00 | 1,240 | 37°F |
| Bradford White RE2H65T | 240V | 64 | 51 dBA | 3.64 | 1,363 | 35°F |
| Bradford White RE2H80T | 240V | 75 | 51 dBA | 3.59 | 1,382 | 35°F |
| Noritz NHP50 + 3 variants incl. Hubbell, VAUGHN THERMAL | 240V | 47 | 54 dBA | 3.46 | 938 | 35°F |
| Noritz NHP65 + 3 variants incl. Hubbell, VAUGHN THERMAL | 240V | 57 | 54 dBA | 3.34 | 974 | 35°F |
| VAUGHN THERMAL MP55FHPT | 240V | 55 | 54 dBA | 3.30 | 982 | 35°F |
| VAUGHN THERMAL MP80FHPT | 240V | 80 | 54 dBA | 3.50 | 1,375 | 35°F |
| VAUGHN THERMAL MP120FHPT | 240V | 119 | 54 dBA | 3.50 | 1,418 | 35°F |
| Noritz NHP80 + 3 variants incl. Hubbell, VAUGHN THERMAL | 240V | 74 | 54 dBA | 3.48 | 1,424 | 35°F |
| Noritz NHP120 + 3 variants incl. Hubbell, VAUGHN THERMAL | 240V | 109 | 54 dBA | 3.38 | 1,467 | 35°F |
| Rheem PROPH50 T0 RH120 | 120V plug-in | 46 | 55 dBA | 3.00 | 1,082 | — |
How loud is a heat pump water heater in practice?
The compressor and fan run for several hours a day, mostly after hot water use. A rating in the low 40s is hard to hear through a closed door; a rating near 50 to 55 dBA is noticeable in an adjacent room. Placement matters as much as the rating: a garage, basement, or utility room with a closed door makes most units unobtrusive, while a closet next to a bedroom is where noise complaints come from. Rubber isolation pads and keeping the unit off a shared wall help.
dBA ratings are measured at a set distance under test conditions. They are useful for comparing models, not for predicting exactly what you will hear.
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Common questions
What is the quietest heat pump water heater?
By rated sound level in ENERGY STAR data, the SANCO2 GS5-45HPC HP + ECO-43SSAQB at 37 dBA. The quietest integrated (all-in-one) model is the GE Profile PF40S10FPY01 at 41 dBA.
Are heat pump water heaters loud?
Rated levels run 37 to 55 dBA, comparable to a refrigerator up to a quiet conversation. Most people do not notice one in a garage or basement.
Can I put a heat pump water heater in a closet?
Only if the closet meets the manufacturer's air volume requirement (often about 700 cubic feet) or uses a louvered door or ducting kit. Noise is more noticeable in a closet near living space.
Sources. ENERGY STAR certified heat pump water heater data (159 certified configurations, retrieved March 2026; each row links to a RatingPlate spec page when one is published). Methodology