Air purifier electricity cost running 24/7: 187 ENERGY STAR models

What it costs to run an air purifier around the clock in every US state, for all 187 ENERGY STAR certified models from 62 brands, from certified watts and EIA electricity prices.

By BuyerDecisionUpdated 20 October 2026

Watts and annual energy from ENERGY STAR certified test data, prices from the US Energy Information Administration. We have not metered any purifier ourselves. How we research | How links work

The short answer

Running 24/7 at the highest fan speed, the typical ENERGY STAR air purifier costs about $3.33 a month at the US average electricity price of 18.31 cents per kWh. Across all 187 certified models the cost runs from $0.68 to $11.19 a month (5.1 to 83.7 W). In Hawaii, the dearest state, the typical model is $8.72. Lower speeds and auto mode cost less, so treat these as the most you would pay.

Title card: air purifier electricity cost, with rising bars — Illustration, not a photograph of a specific product.

Your cost to run it

Pick your state and a model, or type the watts from your own purifier's label. Add your room size to see the cheapest certified models that cover it.

State Model Or your watts Hours a day Room size (sq ft, optional)

$5.37 a month

Levoit Core 400S at 40.2 W, 24 hours a day, at 18.31 cents per kWh.

Every certified model, lowest watts first

Watts are at the highest fan speed, the setting the DOE test uses. Monthly cost is 24 hours a day at that speed and the US average price. Room size is ENERGY STAR's certified figure. A flag means the certified watts and annual kWh do not agree within a normal standby draw, so check that model's own label.

Brand	Model as certified	Watts at top speed	PM2.5 CADR (cfm)	CADR per watt	Room size (sq ft)	Certified kWh a year	24/7 a month	Flag	Source
Blueair	4612522000	5.1	72	14.1	127	30	$0.68		ENERGY STAR
AeroNova	DH-JH01A	5.2	32	6.2	48	33	$0.70		ENERGY STAR
AeroNova	MK01A	5.2	32	6.2	48	33	$0.70		ENERGY STAR
Greenlite	G-Pure-7W	5.2	32	6.2	48	33	$0.70		ENERGY STAR
Dreame	CVA10B	5.4	56	10.4	84	32	$0.72		ENERGY STAR
Alrocket	DH-JH020US-A00	6.1	44	7.2	62	36	$0.82		ENERGY STAR
MoreLite	MLRAP-2000W	6.2	51	8.2	99	40	$0.83		ENERGY STAR
Levoit	LAP-C171-QUSR	6.6	37	5.6	53	39.33	$0.88		ENERGY STAR
GoveeLife	H7126	6.9	42	6.1	60	42	$0.92		ENERGY STAR
Levoit	LAP-C161-WUS	7	36	5.1	53	42	$0.94		ENERGY STAR
Rainbow	Exhalaron Ultra Tri	7	115	16.4	172	42	$0.94		ENERGY STAR
Blueair	3131000100	7.4	79	10.7	124	43.67	$0.99		ENERGY STAR
Ikea	E2111	7.6	47	6.2	68	44	$1.02		ENERGY STAR
Blueair	Pure 411	8	103	12.9	152	64	$1.07	check label	ENERGY STAR
Ionic Pro	TA750	9.2	90	9.8	138	55	$1.23		ENERGY STAR
Wozoyo	Pure Air PA1	9.2	45	4.9	62	55	$1.23		ENERGY STAR
Aeocky	Pandora-Pro	9.5	43.8	4.6	65	56.9	$1.27		ENERGY STAR
Clorox	TYPE AP31 (11020)	9.6	56	5.8	82	57	$1.28		ENERGY STAR
Bionaire	BAP9260	9.9	50	5.1	71	59	$1.32		ENERGY STAR
BLACK+DECKER	BAPT02	10.2	57	5.6	84	61.2	$1.36		ENERGY STAR
Rainbow	Luggable Ultra	10.7	260	24.3	358	93	$1.43	check label	ENERGY STAR
Coway	Airmega 50	11.4	71	6.2	104	67	$1.52		ENERGY STAR
Honeywell	HPA120***	12.2	75	6.1	110	72	$1.63		ENERGY STAR
Honeywell	HPA125**	12.2	75	6.1	110	72	$1.63		ENERGY STAR
Blueair	1831022000	12.5	85	6.8	140	75	$1.67		ENERGY STAR
Rainbow	Luggable XXL	12.8	330	25.8	474	75	$1.71		ENERGY STAR
Bosch	Air 1000	13.6	69	5.1	101	79	$1.82		ENERGY STAR
Rainbow	Luggable XL Ultra	13.9	366	26.3	516	81	$1.86		ENERGY STAR
Levoit	LAP-B851S-WNA	14.5	87	6.0	132	90	$1.94		ENERGY STAR
Medify Air	MA-14	14.5	80	5.5	116	86	$1.94		ENERGY STAR
Afloia	Kilo	14.6	86	5.9	122	86.6	$1.95		ENERGY STAR
Ikea	E1916	14.9	70	4.7	98	88	$1.99		ENERGY STAR
Medify Air	MA-15	14.9	75	5.0	110	88	$1.99		ENERGY STAR
MegaLight	AP-HCE99-WT	14.9	137	9.2	211	89	$1.99		ENERGY STAR
Clorox	Type AP40 (11101)	15	83	5.5	122	88	$2.00		ENERGY STAR
Alen	BreatheSmart 25i	15.2	102	6.7	150	90	$2.03		ENERGY STAR
Byzeng	APH200-22J	15.2	84	5.5	109	90	$2.03		ENERGY STAR
MegaLight	AP88-DTS-WT	15.2	84	5.5	109	90	$2.03		ENERGY STAR
Blueair	3131000000	15.3	124	8.1	189	89	$2.05		ENERGY STAR
Wozoyo	Pure Air PA2	15.7	80	5.1	116	92	$2.10		ENERGY STAR
Greenlite	G-Pure-15W	15.8	105	6.6	161	92	$2.11		ENERGY STAR
Rainbow	Brisk Box Ultra	15.9	404	25.4	574	94	$2.13		ENERGY STAR
Aeocky	Cybertraon (Cybertron)	16	82	5.1	115	93	$2.14		ENERGY STAR
Dreo	DR-HAP006	16.1	106	6.6	158	102	$2.15		ENERGY STAR
Dreo	DR-HAP006S	16.1	106	6.6	158	102	$2.15		ENERGY STAR
Dreo	DR-HTF022S	16.1	94	5.8	140	102	$2.15		ENERGY STAR
Honeywell	HPA4100B	16.1	113	7.0	169	95	$2.15		ENERGY STAR
Dreo	DR-HAP005S	16.3	121	7.4	180	98	$2.18		ENERGY STAR
Aroeve	DH-JH021US-A00	17.2	145	8.4	214	101	$2.30		ENERGY STAR
Blueair	3132111100	17.3	156	9.0	237	103.3	$2.31		ENERGY STAR
Simply Conserve	AM-AP1130-WH	17.4	109	6.3	163	103	$2.33		ENERGY STAR
Bosch	Air 2000	17.6	93	5.3	133	104	$2.35		ENERGY STAR
Dreame	CVA11B	17.7	121	6.8	180	106	$2.37		ENERGY STAR
MoreLite	MLRAP2000W	18	112	6.2	164	106	$2.41		ENERGY STAR
Blueair	3232111101	18.2	157	8.6	228	108	$2.43		ENERGY STAR
Blueair	3232111100	18.4	154	8.4	225	110	$2.46		ENERGY STAR
Blueair	4512311000	18.4	162	8.8	250	110	$2.46		ENERGY STAR
Aeocky	LunaPure-EJH001	18.5	139	7.5	212	109	$2.47		ENERGY STAR
Frigidaire	FHAP1020A1	18.5	116	6.3	178	108	$2.47		ENERGY STAR
Frigidaire	FHAP1040A1	18.5	116	6.3	178	109	$2.47		ENERGY STAR
Aerus	F185B	18.8	129	6.9	197	109	$2.51		ENERGY STAR
Atmosphere MINI	124746**	20.3	136	6.7	211	122	$2.71		ENERGY STAR
Dreo	DR-HAP008	21	118	5.6	178	125	$2.81		ENERGY STAR
Dreo	DR-HAP008S	21	118	5.6	178	125	$2.81		ENERGY STAR
Cuckoo	CAC-AB0610FI	21.1	150	7.1	231	126	$2.82		ENERGY STAR
Greenlite	G-Pure-22W	21.1	150	7.1	231	126	$2.82		ENERGY STAR
Isinlive	vortex V2	21.1	150	7.1	231	126	$2.82		ENERGY STAR
Midea	793K18A	21.1	150	7.1	231	126	$2.82		ENERGY STAR
Midea	KJ200G-Z41	21.1	150	7.1	231	126	$2.82		ENERGY STAR
Senville	SENAP-250G-Z41	21.1	150	7.1	231	126	$2.82		ENERGY STAR
Activepure	E210A	21.2	119	5.6	183	127	$2.83		ENERGY STAR
Bosch	Air 4000	21.2	163	7.7	242	124	$2.83		ENERGY STAR
Midea	KJ250G-Z43	21.4	150	7.0	234	126	$2.86		ENERGY STAR
PureCode	APU-Z43WUS	21.4	150	7.0	234	126	$2.86		ENERGY STAR
Midea	CAF-A40US(H)	21.5	130	6.0	200	127	$2.87		ENERGY STAR
Dreame	CVM10B	21.7	147	6.8	212	128	$2.90		ENERGY STAR
Coway	AP-0823E	21.8	124	5.7	183	128	$2.91		ENERGY STAR
Greenlite	G-Pure1-22W	21.9	167	7.6	245	129	$2.93		ENERGY STAR
Midea	KJ250G-Z42	22.1	147	6.7	226	131	$2.95		ENERGY STAR
Pro Aire	1PAPUV15	22.1	147	6.7	226	131	$2.95		ENERGY STAR
Woozoo	APF-20	22.3	150	6.7	229	150.21	$2.98	check label	ENERGY STAR
Wozoyo	200004-2	22.3	147	6.6	220	132	$2.98		ENERGY STAR
Clorox	TYPE AP32 (11030)	22.4	151	6.7	229	132	$2.99		ENERGY STAR
Levoit	LAP-C311S-WUSR	22.4	175	7.8	271	132	$2.99		ENERGY STAR
Windmill	SAP2V1	22.4	143	6.4	202	132	$2.99		ENERGY STAR
Honeywell	HPA4200B	22.9	148	6.5	223	137	$3.06		ENERGY STAR
Alen	BreatheSmart 35i	23.2	157	6.8	233	136	$3.10		ENERGY STAR
Dreo	DR-HAP007S	23.7	151	6.4	222	140	$3.17		ENERGY STAR
Levoit	LAP-C341S-WUSZ	24.1	161	6.7	250	145	$3.22		ENERGY STAR
Dreo	DR-HAP005AS	24.6	153	6.2	236	146	$3.29		ENERGY STAR
Dreo	DR-HAP010S	24.6	140	5.7	202	148	$3.29		ENERGY STAR
Longstar	EP-KJTS01-140-25W	24.7	154	6.2	229	144	$3.30		ENERGY STAR
MaxLite	AP215SF4B	24.7	154	6.2	229	144	$3.30		ENERGY STAR
Dreame	CVF20B	24.9	223	9.0	347	149	$3.33		ENERGY STAR
LEEDARSON	AP2025	24.9	144	5.8	219	148	$3.33		ENERGY STAR
MaxLite	AP215SF3B	24.9	144	5.8	219	148	$3.33		ENERGY STAR
Dreo	DR-HAP007AS	25.1	149	5.9	222	152	$3.35		ENERGY STAR
GoveeLife	H7128	26	148	5.7	220	154	$3.48		ENERGY STAR
Dreo	DR-HAP009AS	26.9	153	5.7	225	159	$3.60		ENERGY STAR
Dreo	DR-HAP009	27.3	165	6.0	245	162	$3.65		ENERGY STAR
Dreo	DR-HAP009S	27.3	165	6.0	245	162	$3.65		ENERGY STAR
AirDoctor	AD1500	28.3	172	6.1	264	166	$3.78		ENERGY STAR
Clorox	TYPE AP30 (11010)	28.7	212	7.4	319	169	$3.84		ENERGY STAR
Govee	H7122	28.8	211	7.3	326	175	$3.85		ENERGY STAR
Blueair	3332111100	29.5	298	10.1	439	193	$3.94	check label	ENERGY STAR
Blueair	4412311000	30.4	315	10.4	498	181	$4.06		ENERGY STAR
Atmosphere BLUE	316500K*	30.5	196	6.4	298	184	$4.08		ENERGY STAR
Woozoo	APF-25	30.5	199	6.5	305	179	$4.08		ENERGY STAR
Honeywell	HPA4300B	31	233	7.5	355	185	$4.14		ENERGY STAR
Blueair	3431101000	31.3	246	7.9	378	182	$4.18		ENERGY STAR
Levoit	LAP-C511S-WUS	32.5	299	9.2	467	194	$4.34		ENERGY STAR
Coway	AP-1125G	33.2	193	5.8	287	195	$4.44		ENERGY STAR
Coway	AP-1526D	33.9	257	7.6	395	197	$4.53		ENERGY STAR
Lago	LAPKJ350GS1BLK	34.1	209	6.1	322	202	$4.56		ENERGY STAR
Midea	793K19A	34.1	209	6.1	322	202	$4.56		ENERGY STAR
Midea	KJ350G-S1	34.1	209	6.1	322	202	$4.56		ENERGY STAR
PureCode	APU-S1WUS	34.1	209	6.1	322	202	$4.56		ENERGY STAR
TaoTronics	TT-AP003	34.1	209	6.1	322	202	$4.56		ENERGY STAR
Sharp	KJ400G-L1A-SH Lite	35.1	224	6.4	332	205	$4.69		ENERGY STAR
Honeywell	HPA6000B	35.2	259	7.4	398	207	$4.70		ENERGY STAR
Blueair	3432111100	35.7	351	9.8	525	227	$4.77	check label	ENERGY STAR
Blueair	3631101000	35.8	351	9.8	552	210	$4.79		ENERGY STAR
Frigidaire	FHAP2040A1	36.1	241	6.7	372	213	$4.83		ENERGY STAR
Danby	DAP290BAW	36.9	291	7.9	470	218	$4.93		ENERGY STAR
Lago	LAPKJ500GTB32	36.9	291	7.9	470	218	$4.93		ENERGY STAR
Midea	793K20A	36.9	291	7.9	470	218	$4.93		ENERGY STAR
Midea	US-KJ500G-TB32	36.9	291	7.9	470	218	$4.93		ENERGY STAR
Blueair	5431111000	37.3	227	6.1	335	220	$4.99		ENERGY STAR
Coway	AP-1523D	37.5	256	6.8	395	219	$5.01		ENERGY STAR
Sharp	KCP70UW	38.1	257	6.7	395	225	$5.09		ENERGY STAR
Clorox	Type AP39 (11091)	38.2	216	5.7	330	216	$5.11	check label	ENERGY STAR
Blueair	4312111000	39.6	444	11.2	705	235	$5.29		ENERGY STAR
Levoit	LAP-C401S-WUSR	39.6	234	5.9	363	235	$5.29		ENERGY STAR
Winix	C610	39.6	250	6.3	384	235	$5.29		ENERGY STAR
Winix	C710	39.6	250	6.3	384	235	$5.29		ENERGY STAR
Coway	AP-3018B	40	423	10.6	640	235	$5.35		ENERGY STAR
Levoit	Core 400S	40.2	236	5.9	358	237	$5.37		ENERGY STAR
Amazon Basics	AP5110-UL	41.2	323	7.8	502	239.5	$5.51		ENERGY STAR
Siesean	AP-400	41.3	235	5.7	357	243	$5.52		ENERGY STAR
Siesean	AP-480	41.8	270	6.5	419	245	$5.59		ENERGY STAR
Medify Air	MA-50-V3.0	43.3	272	6.3	409	252	$5.79		ENERGY STAR
Midea	CAF-Z85US	43.6	303	6.9	484	259	$5.83		ENERGY STAR
Blueair	3613111100	43.7	450	10.3	687	259	$5.84		ENERGY STAR
Nuwave	47901	43.7	281	6.4	439	258	$5.84		ENERGY STAR
Winix	T810	44	271	6.2	419	259	$5.88		ENERGY STAR
Medify Air	MA-40-V4.0	44.3	250	5.6	380	261	$5.92		ENERGY STAR
Winix	AT40	46.3	261	5.6	411	272.02	$6.19		ENERGY STAR
Coway	AP-2023K	47.5	306	6.4	468	277	$6.35		ENERGY STAR
Cuckoo	CAC-R1510FW	48.1	272	5.7	420	281	$6.43		ENERGY STAR
Dreo	DR-HAP003S	48.2	300	6.2	456	282	$6.44		ENERGY STAR
Bosch	Air 6000	49.2	343	7.0	525	289	$6.58		ENERGY STAR
Midea	KJ500G-JA32	49.5	303	6.1	459	292	$6.62		ENERGY STAR
IQAir	ATEM E	50	376	7.5	572	295	$6.68		ENERGY STAR
Blueair	7411371000	50.1	279	5.6	422	294	$6.70		ENERGY STAR
Atmosphere Sky	120539**	50.3	310	6.2	490	298	$6.72		ENERGY STAR
CleanForce	CP-Rainbow	50.5	286	5.7	437	309	$6.75		ENERGY STAR
Midea	KJ500G-L1	50.6	310	6.1	474	297	$6.76		ENERGY STAR
Noma	143-0033-2	50.6	310	6.1	474	297	$6.76		ENERGY STAR
okaysou	AirMac X7	50.6	310	6.1	474	297	$6.76		ENERGY STAR
Midea	KJ500G-L1	51	309	6.1	473	299	$6.82		ENERGY STAR
Sharp	AirMac X7	51	309	6.1	473	299	$6.82		ENERGY STAR
Alen	BreatheSmart 75i_V2	52	360	6.9	574	304	$6.95		ENERGY STAR
Cuckoo	CAC-D2020FW	53.5	384	7.2	592	316	$7.15		ENERGY STAR
Coway	Airmega 300 (AP-1515H)	53.8	324	6.0	488	314	$7.19		ENERGY STAR
Cuckoo	CAC-K1910FW	55.1	310	5.6	474	325	$7.36		ENERGY STAR
Coway	Airmega ProX	56	581	10.4	894	335	$7.49		ENERGY STAR
Blueair	6712211000	57.2	390	6.8	609	336	$7.65		ENERGY STAR
Midea	KJ600G-RX600A	57.7	373	6.5	567	341	$7.71		ENERGY STAR
PureCode	PAR001	57.7	373	6.5	567	341	$7.71		ENERGY STAR
Sharp	KJ600F-LM1-SH	57.8	373	6.5	567	341	$7.73		ENERGY STAR
Coway	Airmega 350(W)	58.8	369	6.3	558	344	$7.86		ENERGY STAR
Blueair	Pure 211+	59.9	347	5.8	539	350	$8.01		ENERGY STAR
Coway	AP-2425H	62.2	387	6.2	586	366	$8.31		ENERGY STAR
Smart Air	CMKQ104	62.3	354	5.7	547	359	$8.33	check label	ENERGY STAR
Coway	Airmega 400 (AP-2015F)	62.5	380	6.1	583	366	$8.35		ENERGY STAR
Wozoyo	Pure Air PA6	63.6	367	5.8	563	373	$8.50		ENERGY STAR
Cuckoo	CAC-AH2810FNW	65.8	461	7.0	705	388	$8.80		ENERGY STAR
Levoit	LAP-C601S-WUS	65.9	394	6.0	606	387	$8.81		ENERGY STAR
Coway	Airmega 450(W)	66.2	444	6.7	687	389	$8.85		ENERGY STAR
Levoit	LAP-C601S-WUSR	66.6	396	5.9	611	389	$8.90		ENERGY STAR
AirDoctor	AD4000	67.4	381	5.7	574	396.2	$9.01		ENERGY STAR
Coway	Airmega 450S(W)	67.6	449	6.6	687	399	$9.04		ENERGY STAR
Cuckoo	CAC-F3010FW	68.9	543	7.9	856	406	$9.21		ENERGY STAR
HealthWay	MAX500	73.1	425	5.8	640	430	$9.77		ENERGY STAR
Soleusair	GA1-W	79.2	529	6.7	811	463	$10.59		ENERGY STAR
Winix	Tower XQ	82.5	471	5.7	715	486	$11.03		ENERGY STAR
Fellowes	Aeramax SV	83.7	514	6.1	803	490	$11.19		ENERGY STAR

For rooms of 300 sq ft or more, the lowest draw here is the Rainbow Luggable Ultra at 10.7 W ($1.43 a month around the clock). The biggest draws come from large-room units such as the Winix Tower XQ at 82.5 W and the Coway Airmega 400 (AP-2015F) at 62.5 W. Models that are not ENERGY STAR certified are not in this data.

Cost by state for three typical draws

24 hours a day at EIA's July 2026 residential price. Louisiana is cheapest at 12.72 cents per kWh and Hawaii dearest at 48 cents.

State	Cents per kWh	5.1 W (lowest)	24.9 W (middle)	83.7 W (highest)	Source
US average	18.31	$0.68	$3.33	$11.19	EIA, ENERGY STAR
Alabama	16.40	$0.61	$2.98	$10.02	EIA, ENERGY STAR
Alaska	28.83	$1.07	$5.24	$17.62	EIA, ENERGY STAR
Arizona	15.38	$0.57	$2.80	$9.40	EIA, ENERGY STAR
Arkansas	14.33	$0.53	$2.60	$8.76	EIA, ENERGY STAR
California	33.61	$1.25	$6.11	$20.54	EIA, ENERGY STAR
Colorado	17.00	$0.63	$3.09	$10.39	EIA, ENERGY STAR
Connecticut	24.16	$0.90	$4.39	$14.76	EIA, ENERGY STAR
Delaware	18.48	$0.69	$3.36	$11.29	EIA, ENERGY STAR
District of Columbia	25.21	$0.94	$4.58	$15.40	EIA, ENERGY STAR
Florida	15.03	$0.56	$2.73	$9.18	EIA, ENERGY STAR
Georgia	16.27	$0.61	$2.96	$9.94	EIA, ENERGY STAR
Hawaii	48.00	$1.79	$8.72	$29.33	EIA, ENERGY STAR
Idaho	13.73	$0.51	$2.50	$8.39	EIA, ENERGY STAR
Illinois	19.22	$0.72	$3.49	$11.74	EIA, ENERGY STAR
Indiana	16.73	$0.62	$3.04	$10.22	EIA, ENERGY STAR
Iowa	15.99	$0.60	$2.91	$9.77	EIA, ENERGY STAR
Kansas	15.27	$0.57	$2.78	$9.33	EIA, ENERGY STAR
Kentucky	13.81	$0.51	$2.51	$8.44	EIA, ENERGY STAR
Louisiana	12.72	$0.47	$2.31	$7.77	EIA, ENERGY STAR
Maine	32.41	$1.21	$5.89	$19.80	EIA, ENERGY STAR
Maryland	21.41	$0.80	$3.89	$13.08	EIA, ENERGY STAR
Massachusetts	30.49	$1.14	$5.54	$18.63	EIA, ENERGY STAR
Michigan	23.05	$0.86	$4.19	$14.08	EIA, ENERGY STAR
Minnesota	17.45	$0.65	$3.17	$10.66	EIA, ENERGY STAR
Mississippi	14.54	$0.54	$2.64	$8.88	EIA, ENERGY STAR
Missouri	16.09	$0.60	$2.92	$9.83	EIA, ENERGY STAR
Montana	14.99	$0.56	$2.72	$9.16	EIA, ENERGY STAR
Nebraska	13.78	$0.51	$2.50	$8.42	EIA, ENERGY STAR
Nevada	12.77	$0.48	$2.32	$7.80	EIA, ENERGY STAR
New Hampshire	26.60	$0.99	$4.84	$16.25	EIA, ENERGY STAR
New Jersey	25.19	$0.94	$4.58	$15.39	EIA, ENERGY STAR
New Mexico	16.09	$0.60	$2.92	$9.83	EIA, ENERGY STAR
New York	29.90	$1.11	$5.43	$18.27	EIA, ENERGY STAR
North Carolina	15.16	$0.56	$2.76	$9.26	EIA, ENERGY STAR
North Dakota	13.41	$0.50	$2.44	$8.19	EIA, ENERGY STAR
Ohio	19.45	$0.72	$3.54	$11.88	EIA, ENERGY STAR
Oklahoma	14.35	$0.53	$2.61	$8.77	EIA, ENERGY STAR
Oregon	15.97	$0.59	$2.90	$9.76	EIA, ENERGY STAR
Pennsylvania	21.72	$0.81	$3.95	$13.27	EIA, ENERGY STAR
Rhode Island	28.29	$1.05	$5.14	$17.29	EIA, ENERGY STAR
South Carolina	15.47	$0.58	$2.81	$9.45	EIA, ENERGY STAR
South Dakota	15.37	$0.57	$2.79	$9.39	EIA, ENERGY STAR
Tennessee	13.71	$0.51	$2.49	$8.38	EIA, ENERGY STAR
Texas	15.88	$0.59	$2.89	$9.70	EIA, ENERGY STAR
Utah	13.12	$0.49	$2.38	$8.02	EIA, ENERGY STAR
Vermont	23.75	$0.88	$4.32	$14.51	EIA, ENERGY STAR
Virginia	17.55	$0.65	$3.19	$10.72	EIA, ENERGY STAR
Washington	14.71	$0.55	$2.67	$8.99	EIA, ENERGY STAR
West Virginia	15.78	$0.59	$2.87	$9.64	EIA, ENERGY STAR
Wisconsin	19.06	$0.71	$3.46	$11.65	EIA, ENERGY STAR
Wyoming	14.36	$0.53	$2.61	$8.77	EIA, ENERGY STAR

Next step

Before you buy, check the CADR against your room and look up the replacement filter price and interval on the maker's page. For most purifiers the filters, not the electricity, are the bigger yearly cost.

Common questions

How much does it cost to run an air purifier 24/7?

For the middle of the 187 ENERGY STAR models, about $3.33 a month at the highest fan speed: 24.9 W for 730 hours is 18.2 kWh, at the US average of 18.31 cents per kWh (EIA, July 2026). The range runs from $0.68 for the Blueair 4612522000 (5.1 W) to $11.19 for the Fellowes Aeramax SV (83.7 W). Lower speeds and auto mode cost less.

Does a bigger air purifier cost more to run?

Not always. The Blueair 4312111000 delivers 444 cfm of clean air at 39.6 W, while the Levoit Core 400S delivers 236 cfm at 40.2 W. Same electricity, 1.9 times the clean air. Compare the CADR per watt column, not the room size alone.

Is the ENERGY STAR kWh per year the same as running it 24/7?

No. The certified figure assumes 16 hours a day at the highest fan speed and 8 hours in standby, as set by the DOE test procedure. Running at top speed around the clock uses about 1.5 times the active part of that figure; running on low or auto uses less.

What about Wi-Fi models in standby?

Standby is counted inside the certified kWh. For most models the standby share is small: the figures imply 0 to 5 W. For 7 models the two certified figures do not agree that closely, and we flag them in the table rather than adjust them.

Method

Models. Every room air cleaner in ENERGY STAR's V3.0 certified list sold in the US, read on 19 October 2026 (187 after merging the same model listed under more than one brand name, from 62 brands).
Watts. ENERGY STAR lists each model's smoke CADR and its smoke CADR per watt, both measured at the highest fan speed. Dividing one by the other gives the watts at that speed. Example: 82 cfm / 16.08 cfm per W = 5.1 W.
Check. The DOE test counts 5,840 hours a year at top speed and 2,920 in standby. For 180 of 187 models the watts times 5,840 hours fall short of the certified kWh by a standby draw of 0 to 5 W. The other 7 are flagged, not changed.
Cost. watts / 1,000 x hours x price per kWh. A month is 730 hours (8,760 / 12). Example: 24.9 W x 730 h = 18.18 kWh; at 18.31 cents that is $3.33.
Not covered. Watts at lower speeds and in auto mode, which ENERGY STAR does not publish. Filter costs, which often cost more than the electricity. Purifiers that are not ENERGY STAR certified. We did not meter any unit.

Sources

Changes

2026-10-20: Published. 187 US-market ENERGY STAR room air cleaners (V3.0 data, rows updated 18 October 2026, read 19 October 2026), priced at EIA residential prices for July 2026.