KoolSiln: 15 DOE certified models

KoolSiln has 15 portable AC basic models certified to DOE as of 2026-11-03, rated 6,000 to 12,000 BTU/h SACC. 6 are the same unit as models filed under other brands. How their efficiency compares with their DOE class is below.

Highest certified cooling capacity among its portable ACs: KoolSiln HAC-903, KoolSiln HAC-903WF, KoolSiln HAC903 and 1 more tie at 12,000 BTU/h SACC.

Source: DOE Compliance Certification Database (portable ACs), data as of 2026-11-03.

As an Amazon Associate I earn from qualifying purchases.

Portable air conditioners

10 of 15 KoolSiln portable ACs, listed models first. DOE data as of 2026-11-03.
#	Model	Labels	SACC, BTU/h	Covers	CEER	Hose	Heat	Brands	Amazon
1	KoolSilnHAC-902WF	CEER 7.9 Single hose	10,000SACC, up to 450 sq ft	450 sq ft	7.9	Single hose	No	1	Check price on Amazon
2	KoolSilnHAC904WFfiled as ECOSELF HAC904WF	CEER 7.9 Single hose Sold under 4 brands	10,000SACC, up to 450 sq ft	450 sq ft	7.9	Single hose	No	4	Check price on Amazon
3	KoolSilnHAC9018	CEER 7.3 Single hose	8,000SACC, up to 350 sq ft	350 sq ft	7.3	Single hose	No	1	Check price on Amazon
4	KoolSilnHAC905WFfiled as ECOSELF HAC905WF	CEER 7.3 Single hose Sold under 4 brands	8,000SACC, up to 350 sq ft	350 sq ft	7.3	Single hose	No	4	Check price on Amazon
5	KoolSilnHAC9016	CEER 6.6 Single hose	6,000SACC, up to 250 sq ft	250 sq ft	6.6	Single hose	No	1	Check price on Amazon
6	KoolSilnHAC-903	CEER 12.8 Dual hose	12,000SACC, up to 550 sq ft	550 sq ft	12.8	Dual hose	No	1
7	KoolSilnHAC-903WF	CEER 12.8 Dual hose	12,000SACC, up to 550 sq ft	550 sq ft	12.8	Dual hose	No	1
8	KoolSilnHAC903	CEER 12.8 Dual hose	12,000SACC, up to 550 sq ft	550 sq ft	12.8	Dual hose	No	1
9	KoolSilnHAC903WF	CEER 12.8 Dual hose	12,000SACC, up to 550 sq ft	550 sq ft	12.8	Dual hose	No	1
10	KoolSilnHAC-902filed as ECOSELF HAC-902	CEER 7.9 Single hose Sold under 3 brands	10,000SACC, up to 450 sq ft	450 sq ft	7.9	Single hose	No	3

5 more certified, no listing matched

The other 5 KoolSiln portable ACs, by certified cooling capacity.
#	Model	Labels	SACC, BTU/h	Covers	CEER	Hose	Heat	Brands
1	KoolSilnHAC902	CEER 7.9 Single hose	10,000SACC, up to 450 sq ft	450 sq ft	7.9	Single hose	No	1
2	KoolSilnHAC902WF	CEER 7.9 Single hose	10,000SACC, up to 450 sq ft	450 sq ft	7.9	Single hose	No	1
3	KoolSilnHAC904filed as ECOSELF HAC904	CEER 7.9 Single hose Sold under 4 brands	10,000SACC, up to 450 sq ft	450 sq ft	7.9	Single hose	No	4
4	KoolSilnHAC-901filed as ECOSELF HAC-901	CEER 7.3 Single hose Sold under 3 brands	8,000SACC, up to 350 sq ft	350 sq ft	7.3	Single hose	No	3
5	KoolSilnHAC905filed as ECOSELF HAC905	CEER 7.3 Single hose Sold under 4 brands	8,000SACC, up to 350 sq ft	350 sq ft	7.3	Single hose	No	4

How efficient are KoolSiln portable ACs?

Of the 15 KoolSiln portable ACs, 10 file a higher CEER than the class median, 4 match it and 1 falls below it.

KoolSiln portable ACs against the median CEER (Btu/Wh) of their class. DOE data as of 2026-11-03.
Class	KoolSiln models	Above median	Class median	Best KoolSiln
Single hose portable ACs (1,044)	11	6	CEER 7.3	HAC-902 CEER 7.9
Dual hose portable ACs (334)	4	4	CEER 12.5	HAC-903 CEER 12.8

A higher CEER means more cooling per watt.

Who makes KoolSiln portable ACs?

DOE's database has no manufacturer field, so the evidence is whose model number each unit is filed under and which other brands file the same unit.

KoolSiln shares 6 units with 3 other brands. Its other 9 basic models are filed by KoolSiln alone. Brands it shares with, and how many units each:

KoolSiln units filed under one DOE basic model with other brands. DOE data as of 2026-11-03.
Basic model	KoolSiln model	Number belongs to	Brands
HAC904	HAC904	No known prefix	4
HAC904WF	HAC904WF	No known prefix	4
HAC905	HAC905	No known prefix	4
HAC905WF	HAC905WF	No known prefix	4
HAC-901	HAC-901	No known prefix	3
HAC-902	HAC-902	No known prefix	3

How much does a KoolSiln portable AC cost to run?

While cooling, KoolSiln portable ACs draw about 909 to 1,266 W (certified SACC divided by CEER). That's 17¢ to 23¢ an hour, or $39.62 to $55.17 for 30 days at 8 hours a day. The lowest is KoolSiln HAC9016 (6,000 BTU/h SACC, CEER 6.6) and the highest KoolSiln HAC-902 (10,000 BTU/h SACC, CEER 7.9).

At 18.16¢ per kWh, the US average residential price for August 2026 (EIA Electric Power Monthly, table 5.6.A). Worked out from the certified figures.

Questions about KoolSiln

Is KoolSiln a good portable AC brand?: How its 15 portable ACs compare on efficiency with their DOE class is above. 6 of them are the same unit as another brand's model. We don't test reliability, noise or build quality, so we can't rank brands on those. How we compare models.
How big a room will a KoolSiln portable AC cool?: Its models certify 6,000 to 12,000 BTU/h SACC, which ENERGY STAR's sizing chart puts at 250 to 550 sq ft. 4 were tested dual hose and 11 single hose. SACC and the BTU figure on the box.
Which KoolSiln portable AC is the most efficient for its size?: KoolSiln HAC-902, KoolSiln HAC-902WF, KoolSiln HAC902 and 3 more tie at CEER 7.9: higher than 738 of the 1,044 single hose portable ACs certified to DOE. At the other end is KoolSiln HAC9016, at CEER 6.6, higher than 139 of the 1,044 in its class.
Is KoolSiln the same as ECOSELF?: For 6 units, yes: both file them under the same DOE basic model (HAC-901, HAC-902, HAC904, HAC904WF and 2 more). The other 9 KoolSiln basic models aren't filed by ECOSELF.